AORTIC VALVE INCOMPETENCE 



67 



UWW^ 



VoZve TTltCLCt 



vcdve. hrokeih 



Text-fig. 27. Arterial pressure recorded by simple form of rubber membrane manometer 

 (a) before and (b, c, d) after rupture of a cusp of the aortic valve ; decapitate preparation 

 (N. B. Dreyer and C. S. S.). In b note the drop in the diastolic pressure ; also, in b, c, d, 

 the collapsing form of the pulse-wave descent, and the transmission of an auricular pulse- 

 pressure wave into the artery (subclavian), c is taken later than b and d, and the ventricular 

 beat's sequence upon auricular has become intermittent and irregular, z^p-, level of zero- 

 pressure in the manometer ; 1", time in seconds. 



