{ "id": "AIBD-0303", "title": "Galaxy Watch4 Classic ECG returns “atrial fibrillation” for Joseph Holycross, 39; ER confirms AFib, a week in hospital and open-heart surgery follow", "summary": "Mr. Joseph Holycross reported that doctors confirmed the atrial fibrillation that Samsung Health Monitor detected on his Galaxy Watch4 Classic.", "date_observed": "2026-10-01", "date_basis": "source publication", "date_precision": "day", "benefit_status": null, "source_collection": null, "source_entry": null, "account": "CyberGuy published Kurt Knutsson's interview with Joseph and Jamie Holycross on 1 October 2026. Joseph, 39, is a father of four. The event date and place are not given. He had attributed a racing heart to caffeine for one and a half to two years. His wife Jamie, a respiratory therapist, noticed that he was short of breath. She urged him to run the electrocardiogram (ECG) feature on his Samsung Galaxy Watch4 Classic. He says that the result read “atrial fibrillation” in bold. He repeated the recording several times, then went to the emergency room (ER), where a doctor reviewed the watch tracing and confirmed AFib. He stayed about a week in hospital. About ten days later he returned for open-heart surgery to repair “several things on my heart”. Asked whether he would have gone to the ER without the watch, he said “Nope”. The family says that doctors warned that he “probably would have had a stroke, heart attack, or both” and recommended screening for his siblings and children.", "category": "benefit created", "unexpected": false, "purpose": "The Samsung Health Monitor ECG feature is built to record a 30-second single-lead ECG and classify it. It flags a possible AFib result so the user contacts a doctor. This result was that purpose.", "system": "Samsung Health Monitor ECG Monitor app", "model_version": null, "developer": "Samsung Electronics", "deployer": null, "location": "Not stated in the read reports", "domain": "Healthcare (cardiology)", "segment": "Consumer wearables", "benefit_type": "Improved Physical Health", "taxonomy_note": null, "registry_ids": {}, "ratings": [ { "group": "personal", "depth": 3, "reason": "ER confirmation of AFib, a week of inpatient work-up and open-heart surgery followed the result. The stroke-or-heart-attack counterfactual is the family's report of doctors' warnings in a single news feature." } ], "ai_role": { "status": "assessed", "statement": "The watch classified a user-initiated 30-second ECG as atrial fibrillation. Holycross says that he would not have gone to the ER without that result and that an ER doctor confirmed the rhythm. The recording was prompted by his wife's observation, not by a passive irregular-rhythm notification. CyberGuy's original interview records the couple's account. No clinical document or independent clinical verification is cited. Samsung's instructions distinguish the ECG app from its compatible watch hardware. The interview does not disclose the installed app, operating-system, or classifier version." }, "evidence": [ { "kind": "news report", "citation": "Knutsson K (2026). Smartwatch AFib alert sends dad to ER before heart surgery. CyberGuy, 1 October 2026.", "title": "Smartwatch AFib alert sends dad to ER before heart surgery", "url": "https://cyberguy.com/future-tech/galaxy-watch-afib-alert-dad-heart-surgery/", "date": "2026-10-01", "written_by": "independent", "quote": "It came up and told me immediately at the top in bold letters, atrial fibrillation" }, { "kind": "other", "citation": "Samsung Electronics. Samsung ECG Monitor App with Irregular Heart Rhythm Notification: US Instructions for Use. June 2023, document revision 4.0, pp. 2, 4–5. Page 4 distinguishes ECG app versions 1.1 and 1.2 from compatible Galaxy Watch4 hardware.", "title": "Samsung ECG Monitor App with Irregular Heart Rhythm Notification: US Instructions for Use", "url": "https://image-us.samsung.com/SamsungUS/home/apps/samsung-health-monitor/IFU_IHRN_US_202306.pdf", "date": null, "written_by": "makers", "quote": null } ], "replication": { "produced_by": [ "A Galaxy Watch with the ECG feature enabled through Samsung Health Monitor on a paired Galaxy phone", "A symptomatic user prompted to record an ECG", "An ER able to confirm the rhythm on a 12-lead ECG" ], "must_hold": [ "The single-lead classifier returns AFib rather than inconclusive or poor recording", "The user acts on the result instead of dismissing it" ], "echoes": [] }, "paired_incident": null, "headline": "A father went to the ER after checking his heart with a smartwatch", "metric": "open-heart surgery followed ten days later", "comparator": { "against": "no watch ECG reading (Joseph's and his doctors' counterfactual)", "before": "He probably would have had a stroke, heart attack, or both", "after": "He says an ER doctor reviewed the tracing and confirmed that he was in AFib.", "basis": "assumed", "quote": "When I asked Joseph whether he would have gone to the emergency room that day without the watch, he did not hesitate. \"Nope,\" he said.", "url": "https://cyberguy.com/future-tech/galaxy-watch-afib-alert-dad-heart-surgery/" }, "later": { "status": "unknown", "date": null, "note": "The original interview says that Holycross uses the watch to track walking during recovery. No separately reported later outcome is cited.", "quote": null, "url": null }, "value": null, "developer_country": "South Korea", "deployer_country": null, "unrated_because": null, "brief_notes": null, "brief": null, "revisions": [ { "date": "2026-10-20", "change": "Record drafted from the cited sources.", "source": null, "editor": "AIBD" }, { "date": "2026-10-21", "change": "Benefit type set to Improved Physical Health under Trustible's full taxonomy of 23 types; it was Improved Accessibility among the six first used.", "source": "https://trustible.ai/post/a-framework-for-measuring-the-benefits-of-ai/", "editor": "AIBD" }, { "date": "2026-10-21", "change": "Added what the benefit is measured against from the cited sources.", "source": "https://www.foxnews.com/tech/smartwatch-afib-alert-sends-dad-er-before-heart-surgery", "editor": "AIBD" }, { "date": "2026-10-21", "change": "Country of the developer added from the organization's own site or a registry.", "source": "https://en.wikipedia.org/wiki/Samsung_Electronics", "editor": "AIBD" }, { "date": "2026-10-21", "change": "Prose pass: a rating reason, account, purpose, the system's part rewritten in shorter sentences with abbreviations expanded; facts, figures and quotations unchanged.", "source": null, "editor": "AIBD" }, { "date": "2026-10-21", "change": "Notes about which sources could be read were reworded for readers; facts, figures and quotations unchanged.", "source": null, "editor": "AIBD" }, { "date": "2026-10-22", "change": "Organization name standardized to Samsung Electronics.", "source": null, "editor": "AIBD" }, { "date": "2026-10-24", "change": "Traced the account to Kurt Knutsson's original CyberGuy interview, published on 1 October 2026. Replaced the two Fox excerpts with one original source and removed the BGR retelling from active evidence. Fox's 4 October republication and BGR's 6 October retelling add no independent case evidence. Preserved the couple's testimony and the absence of clinical verification. Excluded source URLs: https://www.foxnews.com/tech/smartwatch-afib-alert-sends-dad-er-before-heart-surgery; https://www.bgr.com/2279265/samsung-galaxy-watch-detects-afib-before-heart-surgery/.", "source": "https://cyberguy.com/future-tech/galaxy-watch-afib-alert-dad-heart-surgery/", "editor": "AIBD" }, { "date": "2026-10-24", "change": "Rewrote the short title and summary in plain language, preserving the reported benefit and material limits. Added the named publication or institution to the reviewed lead source for homepage display.", "source": "https://cyberguy.com/future-tech/galaxy-watch-afib-alert-dad-heart-surgery/", "editor": "AIBD" }, { "date": "2026-10-24", "change": "Identified the AI system or feature in the supporting summary, or stated that the source does not name the software. Preserved the reported benefit and material qualifications.", "source": "https://cyberguy.com/future-tech/galaxy-watch-afib-alert-dad-heart-surgery/", "editor": "AIBD" }, { "date": "2026-10-24", "change": "Shortened the homepage supporting statement to one sentence naming the system and its contribution; retained detailed outcomes and qualifications in the case account and source notes.", "source": "https://cyberguy.com/future-tech/galaxy-watch-afib-alert-dad-heart-surgery/", "editor": "AIBD" }, { "date": "2026-10-24", "change": "Revised the title and subtitle for natural phrasing, with named researchers, shorter dependencies, and less compressed terminology; preserved the system identities and evidence qualifications.", "source": "https://cyberguy.com/future-tech/galaxy-watch-afib-alert-dad-heart-surgery/", "editor": "AIBD" }, { "date": "2026-10-24", "change": "Placed the beneficiary’s personal name in the subtitle and kept the display headline focused on the reported benefit.", "source": "https://cyberguy.com/future-tech/galaxy-watch-afib-alert-dad-heart-surgery/", "editor": "AIBD" }, { "date": "2026-10-24", "change": "Separated the Galaxy Watch4 Classic hardware from the Samsung Health Monitor ECG Monitor app. Cleared the unsupported AI model version and added Samsung's original instructions, whose compatibility table shows that the hardware alone cannot establish the installed app version.", "source": "https://image-us.samsung.com/SamsungUS/home/apps/samsung-health-monitor/IFU_IHRN_US_202306.pdf", "editor": "AIBD" }, { "date": "2026-10-24", "change": "Revised the homepage subtitle for concise database prose, with courtesy titles for named beneficiaries and numbered clauses for the Coates drug-selection account. Preserved the reported evidence and material uncertainty.", "source": null, "editor": "AIBD" } ], "confidence": "reported", "shade": "medium", "claim_status": "Independently reported", "claim_basis": "Sources: one independent news report and the makers' other. The cited evidence includes no independent study or report and no finding by a regulator or court.", "profile": { "case_id": "AIBD-0303", "catalog_version": "1.0.0", "source_fingerprint": "ca726c54b3937fe2ad593b6030126fd50dd11c30308c8349e4cfd806f0752c2a", "collection_refs": [ { "collection_id": "aibd", "version": "snapshot-8bf7cfec9cb185aa" }, { "collection_id": "aibd", "version": "2026-10-25" } ], "source_ids": [ "AIBD-0303-source-0001", "AIBD-0303-source-0002" ], "families": { "strategic assessments": { "state": "not_assessed", "review_state": "not_assessed", "coverage": "partial", "record_ids": [] }, "evaluations": { "state": "not_assessed", "review_state": "not_assessed", "coverage": "partial", "record_ids": [] }, "monetary observations": { "state": "not_assessed", "review_state": "not_assessed", "coverage": "partial", "record_ids": [] }, "institutional decisions": { "state": "not_assessed", "review_state": "not_assessed", "coverage": "partial", "record_ids": [] } }, "fields": { "actors[]": { "state": "value_present", "value": { "kind": "record_fields", "fields": { "developer": "Samsung Electronics" } }, "provenance": { "kind": "legacy_record", "basis": "Preserved from the existing AIBD record; external sources were not rechecked.", "record_fields": [ "developer" ], "source_refs": [] }, "review_state": "record_mapped", "coverage": "partial" }, "actors[].ownership_control": { "state": "not_assessed", "review_state": "not_assessed", "coverage": "partial" }, "ai_contribution": { "state": "value_present", "value": { "kind": "record_fields", "fields": { "ai_role": { "status": "assessed", "statement": "The watch classified a user-initiated 30-second ECG as atrial fibrillation. Holycross says that he would not have gone to the ER without that result and that an ER doctor confirmed the rhythm. The recording was prompted by his wife's observation, not by a passive irregular-rhythm notification. CyberGuy's original interview records the couple's account. No clinical document or independent clinical verification is cited. Samsung's instructions distinguish the ECG app from its compatible watch hardware. The interview does not disclose the installed app, operating-system, or classifier version." } } }, "provenance": { "kind": "source_review", "basis": "Updated the affected source references, dates, or account after reading the original sources. Other mapped content and its review status remain unchanged.", "record_fields": [ "ai_role" ], "source_refs": [ "AIBD-0303-source-0001" ], "reviewed_on": "2026-10-24" }, "review_state": "reviewed", "coverage": "partial", "display": { "answer": "The watch classified a 30-second ECG as atrial fibrillation after the patient’s wife prompted him to take a reading. He said that an emergency physician confirmed the rhythm. The original interview provides their testimony without clinical records.", "editor_note": "" } }, "ai_relationship": { "state": "value_present", "value": { "kind": "record_fields", "fields": { "category": "benefit created", "ai_role": { "status": "assessed", "statement": "The watch classified a user-initiated 30-second ECG as atrial fibrillation. Holycross says that he would not have gone to the ER without that result and that an ER doctor confirmed the rhythm. The recording was prompted by his wife's observation, not by a passive irregular-rhythm notification. CyberGuy's original interview records the couple's account. No clinical document or independent clinical verification is cited. Samsung's instructions distinguish the ECG app from its compatible watch hardware. The interview does not disclose the installed app, operating-system, or classifier version." } } }, "provenance": { "kind": "source_review", "basis": "Updated the affected source references, dates, or account after reading the original sources. 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later", "editor_note": "" } }, "evaluations[].reproduction_materials": { "state": "not_assessed", "review_state": "not_assessed", "coverage": "partial", "family": "evaluations" }, "evaluations[].setting_sample": { "state": "not_assessed", "review_state": "not_assessed", "coverage": "partial", "family": "evaluations" }, "evaluations[].uncertainty_limitations": { "state": "not_assessed", "review_state": "not_assessed", "coverage": "partial", "family": "evaluations" }, "external_references[]": { "state": "not_assessed", "review_state": "not_assessed", "coverage": "partial" }, "follow_up[]": { "state": "value_present", "value": { "kind": "record_fields", "fields": { "later": { "status": "unknown", "note": "The original interview says that Holycross uses the watch to track walking during recovery. 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Joseph, 39, is a father of four. The event date and place are not given. He had attributed a racing heart to caffeine for one and a half to two years. His wife Jamie, a respiratory therapist, noticed that he was short of breath. She urged him to run the electrocardiogram (ECG) feature on his Samsung Galaxy Watch4 Classic. He says that the result read “atrial fibrillation” in bold. He repeated the recording several times, then went to the emergency room (ER), where a doctor reviewed the watch tracing and confirmed AFib. He stayed about a week in hospital. About ten days later he returned for open-heart surgery to repair “several things on my heart”. Asked whether he would have gone to the ER without the watch, he said “Nope”. The family says that doctors warned that he “probably would have had a stroke, heart attack, or both” and recommended screening for his siblings and children.", "benefit_type": "Improved Physical Health" } }, "provenance": { "kind": "source_review", "basis": "Updated the affected source references, dates, or account after reading the original sources. Other mapped content and its review status remain unchanged.", "record_fields": [ "account", "benefit_type" ], "source_refs": [ "AIBD-0303-source-0001" ], "reviewed_on": "2026-10-24" }, "review_state": "record_mapped", "coverage": "partial" }, "outcomes[].distribution": { "state": "not_assessed", "review_state": "not_assessed", "coverage": "partial" }, "outcomes[].duration": { "state": "not_assessed", "review_state": "not_assessed", "coverage": "partial" }, "outcomes[].id": { "state": "not_assessed", "review_state": "not_assessed", "coverage": "partial" }, "outcomes[].stakeholder_group": { "state": "value_present", "value": { "kind": "record_fields", "fields": { "ratings": [ { "group": "personal", "depth": 3, "reason": "ER confirmation of AFib, a week of inpatient work-up and open-heart surgery followed the result. The stroke-or-heart-attack counterfactual is the family's report of doctors' warnings in a single news feature." } ] } }, "provenance": { "kind": "legacy_record", "basis": "Preserved from the existing AIBD record; external sources were not rechecked.", "record_fields": [ "ratings" ], "source_refs": [] }, "review_state": "record_mapped", "coverage": "partial" }, "outcomes[].status": { "state": "not_assessed", "review_state": "not_assessed", "coverage": "partial" }, "outcomes[].tradeoffs": { "state": "not_assessed", "review_state": "not_assessed", "coverage": "partial" }, "outcomes[].unexpected": { "state": "value_present", "value": { "kind": "record_fields", "fields": { "unexpected": false, "purpose": "The Samsung Health Monitor ECG feature is built to record a 30-second single-lead ECG and classify it. It flags a possible AFib result so the user contacts a doctor. This result was that purpose." } }, "provenance": { "kind": "legacy_record", "basis": "Preserved from the existing AIBD record; external sources were not rechecked.", "record_fields": [ "unexpected", "purpose" ], "source_refs": [] }, "review_state": "record_mapped", "coverage": "partial" }, "places[]": { "state": "value_present", "value": { "kind": "record_fields", "fields": { "location": "Not stated in the read reports", "developer_country": "South Korea" } }, "provenance": { "kind": "legacy_record", "basis": "Preserved from the existing AIBD record; external sources were not rechecked.", "record_fields": [ "location", "developer_country" ], "source_refs": [] }, "review_state": "record_mapped", "coverage": "partial" }, "purpose": { "state": "value_present", "value": { "kind": "record_fields", "fields": { "purpose": "The Samsung Health Monitor ECG feature is built to record a 30-second single-lead ECG and classify it. It flags a possible AFib result so the user contacts a doctor. This result was that purpose." } }, "provenance": { "kind": "legacy_record", "basis": "Preserved from the existing AIBD record; external sources were not rechecked.", "record_fields": [ "purpose" ], "source_refs": [] }, "review_state": "record_mapped", "coverage": "partial" }, "record_dates": { "state": "value_present", "value": { "kind": "record_fields", "fields": { "date_observed": "2026-10-01", "date_basis": "source publication", "date_precision": "day", "revisions": [ { "date": "2026-10-20", "change": "Record drafted from the cited sources.", "editor": "AIBD" }, { "date": "2026-10-21", "change": "Benefit type set to Improved Physical Health under Trustible's full taxonomy of 23 types; it was Improved Accessibility among the six first used.", "source": "https://trustible.ai/post/a-framework-for-measuring-the-benefits-of-ai/", "editor": "AIBD" }, { "date": "2026-10-21", "change": "Added what the benefit is measured against from the cited sources.", "source": "https://www.foxnews.com/tech/smartwatch-afib-alert-sends-dad-er-before-heart-surgery", "editor": "AIBD" }, { "date": "2026-10-21", "change": "Country of the developer added from the organization's own site or a registry.", "source": "https://en.wikipedia.org/wiki/Samsung_Electronics", "editor": "AIBD" }, { "date": "2026-10-21", "change": "Prose pass: a rating reason, account, purpose, the system's part rewritten in shorter sentences with abbreviations expanded; facts, figures and quotations unchanged.", "editor": "AIBD" }, { "date": "2026-10-21", "change": "Notes about which sources could be read were reworded for readers; facts, figures and quotations unchanged.", "editor": "AIBD" }, { "date": "2026-10-22", "change": "Organization name standardized to Samsung Electronics.", "editor": "AIBD" }, { "date": "2026-10-24", "change": "Traced the account to Kurt Knutsson's original CyberGuy interview, published on 1 October 2026. 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Added the named publication or institution to the reviewed lead source for homepage display.", "source": "https://cyberguy.com/future-tech/galaxy-watch-afib-alert-dad-heart-surgery/", "editor": "AIBD" }, { "date": "2026-10-24", "change": "Identified the AI system or feature in the supporting summary, or stated that the source does not name the software. Preserved the reported benefit and material qualifications.", "source": "https://cyberguy.com/future-tech/galaxy-watch-afib-alert-dad-heart-surgery/", "editor": "AIBD" }, { "date": "2026-10-24", "change": "Shortened the homepage supporting statement to one sentence naming the system and its contribution; retained detailed outcomes and qualifications in the case account and source notes.", "source": "https://cyberguy.com/future-tech/galaxy-watch-afib-alert-dad-heart-surgery/", "editor": "AIBD" }, { "date": "2026-10-24", "change": "Revised the title and subtitle for natural phrasing, with named researchers, shorter dependencies, and less compressed terminology; preserved the system identities and evidence qualifications.", "source": "https://cyberguy.com/future-tech/galaxy-watch-afib-alert-dad-heart-surgery/", "editor": "AIBD" }, { "date": "2026-10-24", "change": "Placed the beneficiary’s personal name in the subtitle and kept the display headline focused on the reported benefit.", "source": "https://cyberguy.com/future-tech/galaxy-watch-afib-alert-dad-heart-surgery/", "editor": "AIBD" }, { "date": "2026-10-24", "change": "Separated the Galaxy Watch4 Classic hardware from the Samsung Health Monitor ECG Monitor app. Cleared the unsupported AI model version and added Samsung's original instructions, whose compatibility table shows that the hardware alone cannot establish the installed app version.", "source": "https://image-us.samsung.com/SamsungUS/home/apps/samsung-health-monitor/IFU_IHRN_US_202306.pdf", "editor": "AIBD" }, { "date": "2026-10-24", "change": "Revised the homepage subtitle for concise database prose, with courtesy titles for named beneficiaries and numbered clauses for the Coates drug-selection account. Preserved the reported evidence and material uncertainty.", "editor": "AIBD" } ] } }, "provenance": { "kind": "curatorial", "basis": "Updated the displayed wording and revision history without changing the reviewed facts, sources, or assessments.", "record_fields": [ "date_observed", "revisions", "date_basis", "date_precision" ], "source_refs": [ "AIBD-0303-source-0001" ], "reviewed_on": "2026-10-24" }, "review_state": "reviewed", "coverage": "partial" }, "replication.attempts[]": { "state": "not_assessed", "review_state": "not_assessed", "coverage": "partial" }, "replication.conditions": { "state": "value_present", "value": { "kind": "record_fields", "fields": { "replication": { "produced_by": [ "A Galaxy Watch with the ECG feature enabled through Samsung Health Monitor on a paired Galaxy phone", "A symptomatic user prompted to record an ECG", "An ER able to confirm the rhythm on a 12-lead ECG" ], "must_hold": [ "The single-lead classifier returns AFib rather than inconclusive or poor recording", "The user acts on the result instead of dismissing it" ], "echoes": [] } } }, "provenance": { "kind": "legacy_record", "basis": "Preserved from the existing AIBD record; external sources were not rechecked.", "record_fields": [ "replication" ], "source_refs": [] }, "review_state": "record_mapped", "coverage": "partial" }, "revision_history[]": { "state": "value_present", "value": { "kind": "record_fields", "fields": { "revisions": [ { "date": "2026-10-20", "change": "Record drafted from the cited sources.", "editor": "AIBD" }, { "date": "2026-10-21", "change": "Benefit type set to Improved Physical Health under Trustible's full taxonomy of 23 types; it was Improved Accessibility among the six first used.", "source": "https://trustible.ai/post/a-framework-for-measuring-the-benefits-of-ai/", "editor": "AIBD" }, { "date": "2026-10-21", "change": "Added what the benefit is measured against from the cited sources.", "source": "https://www.foxnews.com/tech/smartwatch-afib-alert-sends-dad-er-before-heart-surgery", "editor": "AIBD" }, { "date": "2026-10-21", "change": "Country of the developer added from the organization's own site or a registry.", "source": "https://en.wikipedia.org/wiki/Samsung_Electronics", "editor": "AIBD" }, { "date": "2026-10-21", "change": "Prose pass: a rating reason, account, purpose, the system's part rewritten in shorter sentences with abbreviations expanded; facts, figures and quotations unchanged.", "editor": "AIBD" }, { "date": "2026-10-21", "change": "Notes about which sources could be read were reworded for readers; facts, figures and quotations unchanged.", "editor": "AIBD" }, { "date": "2026-10-22", "change": "Organization name standardized to Samsung Electronics.", "editor": "AIBD" }, { "date": "2026-10-24", "change": "Traced the account to Kurt Knutsson's original CyberGuy interview, published on 1 October 2026. Replaced the two Fox excerpts with one original source and removed the BGR retelling from active evidence. Fox's 4 October republication and BGR's 6 October retelling add no independent case evidence. Preserved the couple's testimony and the absence of clinical verification. Excluded source URLs: https://www.foxnews.com/tech/smartwatch-afib-alert-sends-dad-er-before-heart-surgery; https://www.bgr.com/2279265/samsung-galaxy-watch-detects-afib-before-heart-surgery/.", "source": "https://cyberguy.com/future-tech/galaxy-watch-afib-alert-dad-heart-surgery/", "editor": "AIBD" }, { "date": "2026-10-24", "change": "Rewrote the short title and summary in plain language, preserving the reported benefit and material limits. Added the named publication or institution to the reviewed lead source for homepage display.", "source": "https://cyberguy.com/future-tech/galaxy-watch-afib-alert-dad-heart-surgery/", "editor": "AIBD" }, { "date": "2026-10-24", "change": "Identified the AI system or feature in the supporting summary, or stated that the source does not name the software. Preserved the reported benefit and material qualifications.", "source": "https://cyberguy.com/future-tech/galaxy-watch-afib-alert-dad-heart-surgery/", "editor": "AIBD" }, { "date": "2026-10-24", "change": "Shortened the homepage supporting statement to one sentence naming the system and its contribution; retained detailed outcomes and qualifications in the case account and source notes.", "source": "https://cyberguy.com/future-tech/galaxy-watch-afib-alert-dad-heart-surgery/", "editor": "AIBD" }, { "date": "2026-10-24", "change": "Revised the title and subtitle for natural phrasing, with named researchers, shorter dependencies, and less compressed terminology; preserved the system identities and evidence qualifications.", "source": "https://cyberguy.com/future-tech/galaxy-watch-afib-alert-dad-heart-surgery/", "editor": "AIBD" }, { "date": "2026-10-24", "change": "Placed the beneficiary’s personal name in the subtitle and kept the display headline focused on the reported benefit.", "source": "https://cyberguy.com/future-tech/galaxy-watch-afib-alert-dad-heart-surgery/", "editor": "AIBD" }, { "date": "2026-10-24", "change": "Separated the Galaxy Watch4 Classic hardware from the Samsung Health Monitor ECG Monitor app. Cleared the unsupported AI model version and added Samsung's original instructions, whose compatibility table shows that the hardware alone cannot establish the installed app version.", "source": "https://image-us.samsung.com/SamsungUS/home/apps/samsung-health-monitor/IFU_IHRN_US_202306.pdf", "editor": "AIBD" }, { "date": "2026-10-24", "change": "Revised the homepage subtitle for concise database prose, with courtesy titles for named beneficiaries and numbered clauses for the Coates drug-selection account. Preserved the reported evidence and material uncertainty.", "editor": "AIBD" } ] } }, "provenance": { "kind": "curatorial", "basis": "Updated the displayed wording and revision history without changing the reviewed facts, sources, or assessments.", "record_fields": [ "revisions" ], "source_refs": [ "AIBD-0303-source-0001" ], "reviewed_on": "2026-10-24" }, "review_state": "reviewed", "coverage": "partial" }, "sector": { "state": "value_present", "value": { "kind": "record_fields", "fields": { "domain": "Healthcare (cardiology)", "segment": "Consumer wearables" } }, "provenance": { "kind": "legacy_record", "basis": "Preserved from the existing AIBD record; external sources were not rechecked.", "record_fields": [ "domain", "segment" ], "source_refs": [] }, "review_state": "record_mapped", "coverage": "partial" }, "sources[].access_version": { "state": "value_present", "value": { "kind": "structured", "data": { "sources": [ { "source_ref": "AIBD-0303-source-0002", "url": "https://image-us.samsung.com/SamsungUS/home/apps/samsung-health-monitor/IFU_IHRN_US_202306.pdf", "title": "Samsung ECG Monitor App with Irregular Heart Rhythm Notification: US Instructions for Use", "published_month": "2023-06", "document_revision": "4.0", "accessed_on": "2026-10-24", "locator": "p. 4, Getting started table", "qualification": "Document revision 4.0 is not the ECG app version; the table separately identifies ECG v1.1 and v1.2." } ] } }, "provenance": { "kind": "source_review", "basis": "Read Samsung's original U.S. instructions and distinguished the document revision from the app releases.", "record_fields": [ "evidence" ], "source_refs": [ "AIBD-0303-source-0002" ], "reviewed_on": "2026-10-24" }, "review_state": "reviewed", "coverage": "complete", "display": { "answer": "Samsung’s June 2023 instructions are available. Revision 4.0 identifies the document. The compatibility table on page 4 lists ECG app versions 1.1 and 1.2, without establishing which version Holycross used.", "editor_note": "" } }, "sources[].citation_locator": { "state": "value_present", "value": { "kind": "record_fields", "fields": { "evidence": [ { "kind": "news report", "citation": "Knutsson K (2026). Smartwatch AFib alert sends dad to ER before heart surgery. CyberGuy, 1 October 2026.", "title": "Smartwatch AFib alert sends dad to ER before heart surgery", "url": "https://cyberguy.com/future-tech/galaxy-watch-afib-alert-dad-heart-surgery/", "date": "2026-10-01", "written_by": "independent", "quote": "It came up and told me immediately at the top in bold letters, atrial fibrillation" }, { "kind": "other", "citation": "Samsung Electronics. Samsung ECG Monitor App with Irregular Heart Rhythm Notification: US Instructions for Use. June 2023, document revision 4.0, pp. 2, 4–5. Page 4 distinguishes ECG app versions 1.1 and 1.2 from compatible Galaxy Watch4 hardware.", "title": "Samsung ECG Monitor App with Irregular Heart Rhythm Notification: US Instructions for Use", "url": "https://image-us.samsung.com/SamsungUS/home/apps/samsung-health-monitor/IFU_IHRN_US_202306.pdf", "written_by": "makers" } ] } }, "provenance": { "kind": "source_review", "basis": "Updated the affected source references, dates, or account after reading the original sources. Other mapped content and its review status remain unchanged.", "record_fields": [ "evidence" ], "source_refs": [ "AIBD-0303-source-0001" ], "reviewed_on": "2026-10-24" }, "review_state": "reviewed", "coverage": "partial" }, "sources[].id": { "state": "value_present", "value": { "kind": "identifiers", "identifiers": [ "AIBD-0303-source-0001", "AIBD-0303-source-0002" ], "role": "Active evidence sources in record order" }, "provenance": { "kind": "curatorial", "basis": "Preserved existing source identifiers and appended the material technical source where applicable.", "record_fields": [ "evidence" ], "source_refs": [ "AIBD-0303-source-0001", "AIBD-0303-source-0002" ], "reviewed_on": "2026-10-24" }, "review_state": "reviewed", "coverage": "complete" }, "sources[].language": { "state": "not_assessed", "review_state": "not_assessed", "coverage": "partial" }, "sources[].relationship": { "state": "value_present", "value": { "kind": "record_fields", "fields": { "evidence": [ { "kind": "news report", "citation": "Knutsson K (2026). Smartwatch AFib alert sends dad to ER before heart surgery. CyberGuy, 1 October 2026.", "title": "Smartwatch AFib alert sends dad to ER before heart surgery", "url": "https://cyberguy.com/future-tech/galaxy-watch-afib-alert-dad-heart-surgery/", "date": "2026-10-01", "written_by": "independent", "quote": "It came up and told me immediately at the top in bold letters, atrial fibrillation" }, { "kind": "other", "citation": "Samsung Electronics. Samsung ECG Monitor App with Irregular Heart Rhythm Notification: US Instructions for Use. June 2023, document revision 4.0, pp. 2, 4–5. Page 4 distinguishes ECG app versions 1.1 and 1.2 from compatible Galaxy Watch4 hardware.", "title": "Samsung ECG Monitor App with Irregular Heart Rhythm Notification: US Instructions for Use", "url": "https://image-us.samsung.com/SamsungUS/home/apps/samsung-health-monitor/IFU_IHRN_US_202306.pdf", "written_by": "makers" } ] } }, "provenance": { "kind": "source_review", "basis": "Updated the affected source references, dates, or account after reading the original sources. Other mapped content and its review status remain unchanged.", "record_fields": [ "evidence" ], "source_refs": [ "AIBD-0303-source-0001" ], "reviewed_on": "2026-10-24" }, "review_state": "reviewed", "coverage": "partial" }, "sources[].upstream_sources": { "state": "value_present", "value": { "kind": "structured", "data": { "origins": [ { "source_refs": [ "AIBD-0303-source-0001" ], "url": "https://cyberguy.com/future-tech/galaxy-watch-afib-alert-dad-heart-surgery/", "publisher": "CyberGuy", "author": "Kurt Knutsson", "published_on": "2026-10-01", "relationship": "Original interview with Joseph and Jamie Holycross. Their account is not clinical verification.", "display_name": "CyberGuy" }, { "source_refs": [ "AIBD-0303-source-0002" ], "url": "https://image-us.samsung.com/SamsungUS/home/apps/samsung-health-monitor/IFU_IHRN_US_202306.pdf", "publisher": "Samsung Electronics", "published_month": "2023-06", "relationship": "Original manufacturer instructions establish the app identity, recording mode, and multiple compatible software versions. They do not verify Holycross's health outcome or installed release.", "display_name": "Samsung Electronics", "locator": "pp. 2, 4–5; especially the Getting started table on p. 4" } ], "excluded_republications": [ { "url": "https://www.foxnews.com/tech/smartwatch-afib-alert-sends-dad-er-before-heart-surgery", "published_on": "2026-10-04", "relationship": "Same reporting republished by Fox; no additional case evidence." }, { "url": "https://www.bgr.com/2279265/samsung-galaxy-watch-detects-afib-before-heart-surgery/", "published_on": "2026-10-06", "relationship": "Retelling with no additional independently obtained case evidence." } ], "independent_reporting_origins": 1, "lead_source_ref": "AIBD-0303-source-0001", "retained_source_order": [ "AIBD-0303-source-0001", "AIBD-0303-source-0002" ], "ordering_basis": "The first retained source is the original publication that supports the main reported benefit. Any additional retained source follows it and supplies the separate evidence described in its relationship.", "system_identity_review": { "reviewed_on": "2026-10-24", "finding": "The original interview establishes Galaxy Watch4 Classic. The original manufacturer instructions establish the Samsung Health Monitor ECG Monitor app, but neither identifies the installed software or classifier release.", "source_refs": [ "AIBD-0303-source-0001", "AIBD-0303-source-0002" ], "technical_locator": "Samsung instructions, p. 4, Getting started table" }, "excluded_technical_attributions": [ { "url": "https://www.youtube.com/watch?v=rU6KyIZ2RpY", "title": "Galaxy Watch6 | Watch6 Classic: How to monitor your heart rate & heart rhythm | Samsung", "published_on": "2023-09-12", "relationship": "Samsung's general tutorial embedded in the CyberGuy article; it is not a recording of Holycross's device and cannot identify his installed software." } ] } }, "provenance": { "kind": "source_review", "basis": "Read the original publications and distinguished original reporting from republication and retelling. Multiple excerpts or copies do not provide independent corroboration.", "record_fields": [ "evidence" ], "source_refs": [ "AIBD-0303-source-0001", "AIBD-0303-source-0002" ], "reviewed_on": "2026-10-24" }, "review_state": "reviewed", "coverage": "complete", "display": { "answer": "CyberGuy interviewed Holycross and his wife. Samsung’s instructions explain the ECG app and compatible watches. Neither supplies a clinical record for Holycross or identifies his installed software release.", "editor_note": "" } }, "strategic_assessments[]": { "state": "not_assessed", "review_state": "not_assessed", "coverage": "partial", "family": "strategic assessments" }, "summary": { "state": "value_present", "value": { "kind": "record_fields", "fields": { "summary": "Mr. Joseph Holycross reported that doctors confirmed the atrial fibrillation that Samsung Health Monitor detected on his Galaxy Watch4 Classic.", "account": "CyberGuy published Kurt Knutsson's interview with Joseph and Jamie Holycross on 1 October 2026. Joseph, 39, is a father of four. The event date and place are not given. He had attributed a racing heart to caffeine for one and a half to two years. His wife Jamie, a respiratory therapist, noticed that he was short of breath. She urged him to run the electrocardiogram (ECG) feature on his Samsung Galaxy Watch4 Classic. He says that the result read “atrial fibrillation” in bold. He repeated the recording several times, then went to the emergency room (ER), where a doctor reviewed the watch tracing and confirmed AFib. He stayed about a week in hospital. About ten days later he returned for open-heart surgery to repair “several things on my heart”. Asked whether he would have gone to the ER without the watch, he said “Nope”. The family says that doctors warned that he “probably would have had a stroke, heart attack, or both” and recommended screening for his siblings and children." } }, "provenance": { "kind": "curatorial", "basis": "Updated the displayed wording and revision history without changing the reviewed facts, sources, or assessments.", "record_fields": [ "summary", "account" ], "source_refs": [ "AIBD-0303-source-0001" ], "reviewed_on": "2026-10-24" }, "review_state": "reviewed", "coverage": "partial" }, "systems[].autonomy_permissions": { "state": "not_assessed", "review_state": "not_assessed", "coverage": "partial" }, "systems[].component_role": { "state": "not_assessed", "review_state": "not_assessed", "coverage": "partial" }, "systems[].deployment_configuration": { "state": "value_present", "value": { "kind": "structured", "data": { "hardware": { "manufacturer": "Samsung Electronics", "model": "Galaxy Watch4 Classic", "source_ref": "AIBD-0303-source-0001", "locator": "His Galaxy Watch showed AFib" }, "software": { "product": "Samsung Health Monitor ECG Monitor app", "version_status": "not reported for this case" }, "operating_system": { "name": "Wear OS", "version_status": "not reported for this case" }, "classifier_version": { "status": "not reported for this case" }, "mode": "User-initiated 30-second ECG recording, prompted by his wife; the case does not establish an irregular-heart-rhythm notification.", "compatible_versions_in_documentation": [ { "ecg_app_version": "1.1", "hardware": "Galaxy Watch4 or later", "minimum_watch_os": "WearOS 3.5", "source_ref": "AIBD-0303-source-0002", "locator": "p. 4, Getting started table" }, { "ecg_app_version": "1.2", "hardware": "Galaxy Watch4 or later", "minimum_watch_os": "WearOS 4.0", "feature": "Irregular Heart Rhythm Notification", "source_ref": "AIBD-0303-source-0002", "locator": "p. 4, Getting started table" } ], "qualification": "Compatibility does not establish which app or operating-system release Holycross had installed. The instructions' v4.0 is a document revision." } }, "provenance": { "kind": "source_review", "basis": "Read the original interview and Samsung's instructions. Kept device, software, and document versions distinct.", "record_fields": [ "system", "model_version" ], "source_refs": [ "AIBD-0303-source-0001", "AIBD-0303-source-0002" ], "reviewed_on": "2026-10-24" }, "review_state": "reviewed", "coverage": "complete", "display": { "answer": "Samsung Health Monitor ran on a Galaxy Watch4 Classic. Holycross took an ECG after his wife noticed a possible problem.", "editor_note": "" } }, "systems[].inputs_outputs": { "state": "not_assessed", "review_state": "not_assessed", "coverage": "partial" }, "systems[].model_name": { "state": "not_reported", "provenance": { "kind": "source_review", "basis": "Read the case evidence and the relevant original technical documentation; no case-specific model identity or release was disclosed.", "record_fields": [], "source_refs": [ "AIBD-0303-source-0001", "AIBD-0303-source-0002" ], "reviewed_on": "2026-10-24" }, "reason": "Samsung names its ECG Monitor app within Samsung Health Monitor. Neither the interview nor the instructions identify a separately named underlying classification model used in this case.", "review_state": "reviewed", "coverage": "complete", "display": { "answer": "Samsung’s ECG classifier for atrial fibrillation. Samsung does not give a separate model name.", "editor_note": "" } }, "systems[].model_version": { "state": "not_reported", "provenance": { "kind": "source_review", "basis": "Read the case evidence and the relevant original technical documentation; no case-specific model identity or release was disclosed.", "record_fields": [ "model_version" ], "source_refs": [ "AIBD-0303-source-0001", "AIBD-0303-source-0002" ], "reviewed_on": "2026-10-24" }, "reason": "The original interview does not state the installed ECG app or classifier version. Samsung lists both ECG v1.1 and v1.2 as compatible with Galaxy Watch4 hardware, so Galaxy Watch4 Classic does not identify the software release.", "review_state": "reviewed", "coverage": "complete", "display": { "answer": "The interview does not identify the installed app or classifier release.", "editor_note": "" } }, "systems[].product_name": { "state": "value_present", "value": { "kind": "record_fields", "fields": { "system": "Samsung Health Monitor ECG Monitor app" } }, "provenance": { "kind": "source_review", "basis": "Identified the reported product or pipeline from its original case and technical sources; kept hardware, underlying model, and software release distinct.", "record_fields": [ "system" ], "source_refs": [ "AIBD-0303-source-0001", "AIBD-0303-source-0002" ], "reviewed_on": "2026-10-24" }, "review_state": "reviewed", "coverage": "complete" }, "systems[].provider": { "state": "value_present", "value": { "kind": "text", "text": "Samsung Electronics" }, "provenance": { "kind": "source_review", "basis": "Samsung Electronics identifies itself as the manufacturer of the ECG Monitor app in the original instructions.", "record_fields": [ "developer" ], "source_refs": [ "AIBD-0303-source-0001", "AIBD-0303-source-0002" ], "reviewed_on": "2026-10-24" }, "review_state": "reviewed", "coverage": "complete" }, "taxonomy_crosswalks[]": { "state": "not_assessed", "review_state": "not_assessed", "coverage": "partial" }, "title": { "state": "value_present", "value": { "kind": "record_fields", "fields": { "title": "Galaxy Watch4 Classic ECG returns “atrial fibrillation” for Joseph Holycross, 39; ER confirms AFib, a week in hospital and open-heart surgery follow", "headline": "A father went to the ER after checking his heart with a smartwatch" } }, "provenance": { "kind": "legacy_record", "basis": "Preserved from the existing AIBD record; external sources were not rechecked.", "record_fields": [ "title", "headline" ], "source_refs": [] }, "review_state": "record_mapped", "coverage": "partial" }, "version": { "state": "value_present", "value": { "kind": "identifiers", "identifiers": [ "ca726c54b3937fe2ad593b6030126fd50dd11c30308c8349e4cfd806f0752c2a" ], "role": "SHA-256 of normalized original case data" }, "provenance": { "kind": "curatorial", "basis": "Recomputed the fingerprint after the homepage copy revision.", "record_fields": [ "summary", "revisions" ], "source_refs": [], "reviewed_on": "2026-10-24" }, "review_state": "record_mapped", "coverage": "complete" }, "workflow": { "state": "value_present", "value": { "kind": "record_fields", "fields": { "account": "CyberGuy published Kurt Knutsson's interview with Joseph and Jamie Holycross on 1 October 2026. Joseph, 39, is a father of four. The event date and place are not given. He had attributed a racing heart to caffeine for one and a half to two years. His wife Jamie, a respiratory therapist, noticed that he was short of breath. She urged him to run the electrocardiogram (ECG) feature on his Samsung Galaxy Watch4 Classic. He says that the result read “atrial fibrillation” in bold. He repeated the recording several times, then went to the emergency room (ER), where a doctor reviewed the watch tracing and confirmed AFib. He stayed about a week in hospital. About ten days later he returned for open-heart surgery to repair “several things on my heart”. Asked whether he would have gone to the ER without the watch, he said “Nope”. The family says that doctors warned that he “probably would have had a stroke, heart attack, or both” and recommended screening for his siblings and children.", "replication": { "produced_by": [ "A Galaxy Watch with the ECG feature enabled through Samsung Health Monitor on a paired Galaxy phone", "A symptomatic user prompted to record an ECG", "An ER able to confirm the rhythm on a 12-lead ECG" ], "must_hold": [ "The single-lead classifier returns AFib rather than inconclusive or poor recording", "The user acts on the result instead of dismissing it" ], "echoes": [] } } }, "provenance": { "kind": "source_review", "basis": "Updated the affected source references, dates, or account after reading the original sources. Other mapped content and its review status remain unchanged.", "record_fields": [ "account", "replication" ], "source_refs": [ "AIBD-0303-source-0001" ], "reviewed_on": "2026-10-24" }, "review_state": "record_mapped", "coverage": "partial" } }, "summary": { "total": 91, "addressed": 91, "known": 31, "reviewed": 17, "record_mapped": 16, "not_assessed": 58, "complete": false, "by_state": { "value_present": 31, "not_reported": 2, "unresolved": 0, "not_assessed": 58, "not_applicable": 0, "withheld": 0, "source_unavailable": 0 } } } }