title: The relationship between aortic valve closure and aortic root motion.
abstract: The minimum interval between aortic valve closure and the onset of posterior motion of the posterior aortic wall (C--PW) was obtained from M-mode echographic studies in normal subjects and patients with mitral regurgitation (MR), rheumatic mitral stenosis (MS), mixed rheumatic MS and MR, pure aortic stenosis (AS), and pure aortic insufficiency. Three-fourths of the patients with MR and 2/3 of those with AS had short C--PW intervals. Short C--PW intervals are probably the result of early mitral valve opening with rapid LA emptying, whereas slow emptying due to dilated, relatively inert left atria may account for normal C--PW intervals in patients with MR. C--PW intervals are affected by both ventricular ejection and LA dynamics and may prove useful in evaluating suspected mitral or aortic valve disease.
mesh_terms: D000293:Adolescent; D000328:Adult; D001011:Aorta / Q000502:physiology* / Q000503:physiopathology; D001021:Aortic Valve / Q000502:physiology* / Q000503:physiopathology; D001024:Aortic Valve Stenosis / Q000150:complications / Q000503:physiopathology; D002648:Child; D002675:Child, Preschool; D004452:Echocardiography; D006801:Humans; D008875:Middle Aged; D008944:Mitral Valve Insufficiency / Q000150:complications / Q000503:physiopathology*; D008946:Mitral Valve Stenosis / Q000150:complications / Q000209:etiology / Q000503:physiopathology; D012214:Rheumatic Heart Disease / Q000150:complications