Interactive ECG simulator

Change the intervals with sliders: the monitor draws the new value from the next beat, and below, a single complex is shown magnified with its measurements.

72bpm

RR
QTc B
QTc F: 833; 416; 404

A single complex magnified: 50 mm/s, 10 mm/mV

All parameters within normal limits

Preset scenarios

Heart rate72 /minPR interval160 msQRS duration90 msQT interval380 msT wave amplitude0.30 mVST shift0.00 mV

The monitor shows one lead (similar to II) schematically. The hyperkalemia and ST shift scenarios are only for explaining the waveform: a real diagnosis is based on a 12-lead ECG and the clinical picture.