2024年10月8日 · ST elevation in aVR with co-existent multi-lead ST depression indicates subendocardial ischaemia due to O2 supply/demand mismatch. ST elevation in aVR can also be seen in the context of anterior STEMI due to LAD occlusion proximal to the first septal branch, causing infarction of the basal septum.

2019年9月1日 · The aVR sign requires a clinical presentation suggestive of ACS and the ECG finding of diffuse ST-segment depression with ST elevation in aVR. Using an aVR ST elevation of ≥1.0 mm rather than ≥0.5 mm increases the specificity of the aVR sign as a marker of left main or severe 3-vessel coronary artery disease.

心电图上avr导联st段抬高被认为是一个极为凶险的表现，往往提示左主干或前降支近端严重病变，是心源性猝死的高危心电图表现。 然而，单纯aVR导联ST段抬高容易被忽略，或因其没有相邻导联而存在争议。

Explore ECG insights on Ventricular Tachycardia using the aVR Algorithm, its clinical applications, limitations, and depolarization patterns in VT and aberrant SVT.

2024年7月11日 · Common abnormalities seen in AVR include changes in the QRS complex, which can indicate various cardiac conditions. For instance, a tall R wave in AVR can be a sign of left ventricular hypertrophy or right bundle branch block. Understanding these patterns is essential for accurate ECG interpretation.

2021年5月1日 · The aVR sign is characterized by diffuse ST depression with ST elevation in aVR. This can be accompanied by ST elevation in V1 but no ST elevation or actually ST depression in V2 (OS 6–9) [ 16 ]. Under appropriate clinical settings, the aVR sign strongly suggests severe and diffuse ischemia due to left main or multivessel coronary artery ...

2015年9月15日 · aVR sign: possible Left Main Coronary Artery (LMCA) occlusion or other severe coronary disease (proximal LMA, 3-vessel disease) • When associated with angina and diffuse ST-segment depression o ST elevation in aVR ≥ 1mm is 80% specific for severe LMCA disease or 3-vessel disease.

2015年11月16日 · A prominent R wave in lead aVR (aVR sign in Brugada syndrome) was suggested as marker for development of life threatening arrhythmic events in Brugada syndrome by Babai Bigi MA and associates [1]. They proposed that a prominent final R wave in lead aVR may indicate more right ventricular conduction delay and hence more electrical heterogeneity ...

The ECG is frequently abnormal in cases of pericarditis, with diffuse ST segment elevations and PR segment depressions in most leads. Reciprocal ST segment depression and PR segment elevation (‘knuckle’ sign) in lead aVR are characteristic and help in supporting a diagnosis of acute pericarditis (29,30). Figure 4).

2019年9月1日 · In patients presenting with signs and symptoms of an acute coronary syndrome (ACS) the combination of multilead ST depression and ST elevation in lead aVR, the electrocardiographic “aVR sign,” has been associated with severe left main coronary artery stenosis or diffuse coronary artery disease and a high risk of death.