Q-1 or C-1 interval in the diagnosis of mitral stenosis.
Open Access
- 1 September 1967
- Vol. 29 (5) , 778-782
- https://doi.org/10.1136/hrt.29.5.778
Abstract
The intial phase of the ventricular contraction (C-l interval), measured from the onset of the systolic wave in the apex cardiogram to the onset of the main vibrations of the 1st mitral sound in the phonocardiogram, is a more reliable index in the diagnosis of mitral stenosis than the transformation time (Q-l interval). The C-l interval shows the actual delay of the 1st mitral sound. The diagnostic value of the Q-l interval is diminished by the electromechanical delay, which may change the results.This publication has 21 references indexed in Scilit:
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