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P duration -
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Apart from the standard 12 leads, additional leads are sometimes useful in the diagnosis of various conditions. These include right sided chest leads, posterior leads and elevated leads. Although ideally these should be recorded by placing electrodes in these locations, they can be derived from the standard leads. Here, right sided (V3R, V4R, V5R and V6R), posterior (V7, V8 and V9) and elevated leads (V1+1, V2+1, V1+2, V2+2) are derived and displayed. See here for more details.

Frontal loop
Sagittal loop
Vector leads
P wave
QRS complex
ST-T segment

Reperfusion VT

A middle aged male admitted with acute anterior wall myocardial infarction ; coronary angiography was suggestive of complete occlusion of distal left main coronary artery for which primary PCI to distal LMCA and proximal LAD was done. Patient developed incessant VT after revascularization. ECG shows a wide complex regular tachycardia of RBBB morphology with V-A dissociation, fusion and capture beats, best seen in lead II. ST elevation is seen in I,aVL,V4-V6 with reciprocal changes in inferior leads

Name: Anon
Sex: UN
Date: 17-01-2022 16:11
Recorded on: Biocare ECGS12A

  • Low pass filter - 100 Hz
  • High pass filter - 0.5 Hz
  • Notch filter - 50 Hz