2015年8月1日 · Look carefully at the ST-segment depression in lead aVL. Do you see the difference? With a “strain pattern” (secondary ST/T-wave abnormality) the ST-depression is downwardly concave with asymmetrical T-wave inversion.

2024年10月8日 · aVL is the only lead truly reciprocal to the inferior wall, as it is the only lead facing the superior part of the ventricle. It is thus a sensitive marker for inferior infarction; In patient cohorts with inferior occlusion myocardial infarction (OMI), ST depression in aVL has been shown to be more prevalent than STE in inferior leads

Leads I, II, III, aVF, aVL and aVR are all derived using three electrodes, which are placed on the right arm, the left arm and the left leg. Given the electrode placements, in relation to the heart, these leads primarily detect electrical activity in the frontal plane.

2024年10月8日 · Lateral STEMI is a stand-alone indication for emergent reperfusion. Lateral extension of an anterior, inferior or posterior MI indicates a larger territory of myocardium at risk with consequent worse prognosis. ST elevation in the lateral leads (I, aVL, V5-6). Reciprocal ST depression in the inferior leads (III and aVF).

Measurement of highly sensitive serum troponin based on a 1- or 3-h protocol is important in diagnosing acute MI but not ST-elevation MI. An early sign of inferior wall MI may be a new T wave inversion in lead aVL. Keywords: Myocardial …

2024年11月17日 · Cardiac axis represents the sum of depolarisation vectors generated by individual cardiac myocytes. Clinically is is reflected by the ventricular axis, and interpretation relies on determining the relationship between the QRS axis …

2019年8月12日 · aVL is the reciprocal lead to the inferior leads in inferior STEMI. Similarly, lead III may move reciprocally, showing ST segment depression in the high lateral STEMI with elevation in aVL.

Leads I, aVL (High Lateral) Polarisation dictates the direction of the trace on the ECG. A wave of polarisation travelling toward a positive electrode results in a positive deflection on the ECG.

4 天之前 · A standard 12-lead ECG utilises 10 electrodes strategically placed on the patient’s body to provide different views of the heart’s electrical activity. These leads are divided into: Limb leads (I, II, III, aVR, aVL, aVF): These view the heart in the vertical plane.

Early recognition of reciprocal changes and serial ECG help initiate early appropriate intervention. Heightened awareness of ST segment and T-wave changes in lead aVL is of paramount importance to quickly identifying life-threatening condition.