Any impulse traveling leftward generates a positive deflection (R wave) in lead I; if the impulse moves rightward, the impulse is negative in lead I (ie, initial Q wave or QS complex).

The P wave is positive in leads I, II, aVF, and V4-V6. This is a sinus tachycardia. The P waves are negative in leads V1-V2, consistent with a left atrial abnormality or left atrial hypertrophy.

The axis of the ECG is the major direction of the overall electrical activity of the heart. ... (R for right arm) is at +30 degrees; the positive of lead aVR is actually at -150 degrees.

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The Normal ECG. A normal ECG contains waves, intervals, segments and one complex, as defined below. Wave: A positive or negative deflection from baseline that indicates a specific electrical event ...

TROY — City officials are once again asking residents to have their water tested after a test on 69 residential properties last year found that all homes tested positive for lead, with 24 ...

The KardiaMobile 6L can record six EKG leads, including I, II, III, aVL, aVR, and aVF. Each lead measures the electrical activity of the heart from different perspectives.

Partho Sengupta, MD (Robert Wood Johnson University Hospital, Rutgers Robert Wood Johnson Medical School, New Brunswick, NJ), said demonstration of the accuracy of the AI-ECG approach for detecting ...

The 12-lead electrocardiogram device, called the Kardia 12L ECG System, is a hand-held version of the standard ECG device usually found in hospitals and used to diagnose heart conditions.