Key result
The Apple Watch 4, adjusted to obtain a 3-lead ECG, successfully matched traditional ECG tracings in detecting STEMI in two patients with 100% right coronary artery occlusion.
Why the study?
Early recognition and treatment of STEMI improves outcomes, motivating the evaluation of an Apple Watch 4 technique to obtain a 3-lead ECG and detect cardiac ischemia.
Does a 3-lead ECG obtained via Apple Watch 4 accurately detect ST-elevation myocardial infarction compared to a traditional ECG in ED patients?
Case Report (n=2)
Does a 3-lead ECG obtained via Apple Watch 4 accurately detect ST-elevation myocardial infarction compared to a traditional ECG in ED patients?
The Apple Watch 4 can be adapted to obtain a 3-lead ECG that successfully identifies STEMI in select patients, though its diagnostic accuracy requires further validation.
Answers are grounded in this paper and cite their sources.
Apple Watch 3-lead ECG may aid early STEMI recognition in select cases; extends wearable feasibility data but requires larger validation before practice change.
BACKGROUND: Early recognition and treatment of ST-elevation myocardial infarction (STEMI) results in better outcomes. OBJECTIVES: To describe a novel technique using the Apple Watch 4 (Apple Inc, Cupertino, CA) to obtain a 3-lead electrocardiogram (ECG) and confirm the watch's feasibility to detect cardiac ischemia in selective cases with a particular injury pattern. METHODS: Two male patients in the Emergency Department had STEMI apparent on their ECGs. These findings were compared with those from the Apple Watch 4, whose positioning was adjusted for 3-lead ECG. RESULTS: The patients' real-time, watch-based, 3-lead ECG tracings matched the traditional ECGs demonstrating STEMI, confirming the potential ability of this device to uncover myocardial ischemia. In each patient, cardiac catheterization revealed severe, 100% occlusion of the right coronary artery. CONCLUSION: The Apple Watch 4 could lead to earlier detection of acute coronary artery disease, but sensitivity and specificity remain unknown.
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Cesar O Avila (2019) conducted a case report in ST-elevation myocardial infarction (STEMI) (n=2). Apple Watch 4 vs. Traditional ECG was evaluated on Detection of STEMI. The Apple Watch 4, adjusted to obtain a 3-lead ECG, successfully matched traditional ECG tracings in detecting STEMI in two patients with 100% right coronary artery occlusion.
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