The vector of lead V1 to V6 has the same starting point, so surface P waves in precordial leads could feature polarity migration that may help predict the particular site of tachycardia origin. [2 ...

The P wave in lead V1 was always positive for left atria origin and always negative for RAA origin. P waves of high CT-originated AT always showed positive-negative (biphasic) variation in lead V1.

Electrocardiogram (ECG) is one of the fundamental markers to detect different cardiovascular diseases (CVDs). Owing to the widespread availability of ECG sensors (single lead) as well as smartwatches ...

OBJECTIVE To assess whether the use of inverted lead aVR ( −aVR ) would improve the classification of acute inferior or lateral myocardial infarction presenting with ST elevation. DESIGN Observational ...

One of the most used techniques to track the heart activity is the electrocardiogram (ECG). Wearables represent an opportunity in this field because they can be easily integrated in telemedicine ...

Objective To describe patterns of prehospital ECG (PHECG) use and determine its association with processes and outcomes of care in patients with ST-elevation myocardial infarction (STEMI) and ...

Of note, ST-segment depression in the anteroseptal leads (V1-V3) could indicate an evolving posterior STEMI and therefore should be managed with a high index of suspicion with a posterior lead ECG if ...