[Spectral analysis and color-coded Doppler study of the changes in aortic regurgitation induced by vasodilators in asymptomatic patients with severe aortic insufficiency].

The acute effects of 20 mg of sublingual nifedipine in 12 patients with chronic severe aortic regurgitation were evaluated with M-mode echocardiography, continuous wave and colour Doppler. After nifedipine, heart rate increased from 68 +/- 8 to 82 +/- 11 beats/m' (p less than 0.001); arterial systolic and diastolic pressures decreased from 143 +/- 16 to 129 +/- 9 mmHg (p less than 0.

[Holter evaluation in elderly subjects without cardiovascular disease].

In 2001, 22% of the Italian population will be over 60 and the morbidity/mortality rate due to cardiovascular disease is extremely high in this age group. However reports in the literature disagree on the incidence of arrhythmias. The present study assesses the incidence of hyper and hypokinetic arrhythmias in a group of "over-sixties" with no clinical signs of cardiovascular and/or systemic disease.