[New echocardiographic (M-mode) index for evaluation of left ventricular end-diastolic pressure in chronic aortic regurgitation (author's transl)].
The clinical evaluation of the best time for the surgical treatment of chronic aortic insufficiency is difficult to be assessed. Several invasive and non invasive procedures had been used, but there is no definitive solution yet. At the National Institute of Cardiology Ignacio Chávez, 13 patients wih pure, chronic and isolated cortic regurgitation (AR) were studied by echocardiography M mode (Echo M) to determine the state of left ventricular performance and the correlation with the valves of the end diastolic pressure of left ventricle (LVEDP). Besides catheterism of the left side, aortography and ventriculography were performed to all the patients. Catheterism, X-nay and electrocardiogram were done within a period no longer than 24 hours after the Echo M record. The function of the left ventricle (LV) was evaluated by measures and calculations published by other authors. With the purpose of integrating the functional characteristics of the LV in one expression, the indices left ventricle and systolic diameter divided by left ventricular normalized velocity of posterior wall (LVESD/LVPWNV) was created. It showed good correlation with LVEDP (r = 0.92). The index also had good correlation with the cardiothoracic ratio (r = 0.86) and the mean velocity of circumferential shortening of the LV by Echo M (r = 0.91). We consider important the LVESD/LVPWNV index proposed here, to determine the LVEDP of these patients; together with the whole clinical information, it makes easier the identification of the most appropriate time for surgical treatment making possible to evade the phase of myocardial damage which is risky to patients with chronic aortic insufficiency.
D000293:Adolescent; D000328:Adult; D001022:Aortic Valve Insufficiency / Q000503:physiopathology* / Q000601:surgery; D001027:Aortography; D001794:Blood Pressure; D006328:Cardiac Catheterization; D002648:Child; D003971:Diastole; D004452:Echocardiography; D005260:Female; D006321:Heart / Q000000981:diagnostic imaging; D006352:Heart Ventricles / Q000503:physiopathology; D006801:Humans; D008297:Male; D011183:Postoperative Complications / Q000517:prevention & control
Nuevo índice for ecocardiografía modo-m para la evaluación de la presión diastólica final del ventrículo izquierdo en la insuficiencia aórtica crónica.