Interpretation of cardiac pathophysiology from pressure waveform analysis: coronary hemodynamics: I. Coronary catheter pressures.

The coronary pressure waveforms described in this rounds are an integral part of the angiographers approach to all patients, especially those with suspected left main coronary stenosis. Patient management will differ according to the laboratory experience and training of the operators. Recognition and appreciation of abnormal coronary pressure waveforms may directly affect the life and death of these patients.