A simple test of cardiac function based upon the heart rate changes induced by the valsalva maneuver

摘要: Abstract The Valsalva ratio (the of the maximal tachycardia to bradycardia induced by a standard maneuver) was determined in 200 normal subjects and 220 patients with heart disease related disorders. Ninety-six percent had ratios 1.50 or higher, this value defined as lower limit normal. tended decrease increasing severity dyspnea aortic mitral valve disease, ischemic cardiomyopathies. inversely left ventricular end-diastolic pressure ( p There statistically significant tendency Abnormal were recorded right failure secondary thromboembolic pulmonary hypertension chronic disease. Among shunts, hyperbolic function Measurement changes rate maneuver provides rapid, safe inexpensive method evaluating cardiac function, permits prediction certain hemodynamic variables without subjecting catheterization.