title: [Preoperative ventilatory function tests as an aid in assessment of operative risk of prosthetic heart valve replacement (author's transl)].
abstract: The operative risk of prosthetic replacement of the mitral valve in 97 patients and of the aortic valve in 126 patients showed a good correlation with the decrease in preoperative pulmonary function (p less than 0,01). The overall mortality rate reached 12,4% respectively 13,4% during the first 28 days after surgery. Depending upon the stage of ventilatory impairment the mortality rate varied between 0 to 50% in the mitral group and between 6,5 to 50% in the aorti group. The impairment of respiratory function is caused by the disturbed hemodynamic function demonstrated by a negative correlation between pulmonary artery pressure and vital capacity.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001021:Aortic Valve / Q000601:surgery; D005260:Female; D006350:Heart Valve Prosthesis / Q000401:mortality; D006801:Humans; D008297:Male; D008875:Middle Aged; D008943:Mitral Valve / Q000601:surgery; D011300:Preoperative Care; D012115:Residual Volume; D012129:Respiratory Function Tests; D014797:Vital Capacity
vernacular_title: Präoperative Ventilationsuntersuchungen zur Einschätzung des Operationsrisikos bei Herzklappenersatz.