Unterschiede in der nichtinvasiven Beurteilung der linksventrikulären Füllung bei Patienten mit dilatativer Kardiomyopathie durch Dopplerechokardiographie und Radionuklidangiographie

: Doppler echocardiography and radionuclide angiography were shown to provide valuable tools with comparable functional parameters for the noninvasive assessment of left ventricular (LV) diastolic function in patients with coronary artery disease or LV hypertrophy. In order to examine the influence of an impaired systolic function on both methods, we studied LV filling simultaneously by Doppler echocardiography and radionuclide angiography in 47 patients with idiopathic dilated cardiomyopathy and stable sinus rhythm. The Doppler echocardiographic peak velocities (VE, VA) and radionuclide angiographic peak filling rates (PFRFF, PFRA) normalized to either left ventricular enddiastolic volume or stroke volume were measured and systolic function was assessed by obtaining the ejection fraction (EF) with the radionuclide angiography. Patients were divided into two groups with moderately (group 1: EF > or = 35%) or severely impaired (group 2: EF < 35%) systolic function. In group 2 the PFRFF (1.8 +/- 0.5 vs. 3.3 +/- 0.8 SV/s; p < 0.01) and PFRA (1.2 +/- 0.6 vs. 2.5 +/- 1.0 SV/s; p < 0.01) were both lower than in group 1, as was the Doppler echocardiographic VA (0.44 +/- 0.20 vs. 0.63 +/- 0.17 m/s; p < 0.01). However, VE was increased with reduced systolic function (0.75 +/- 0.20 vs. 0.53 +/- 0.16 m/s; p < 0.01). No relation was found between PFRFF and VE and only a weak relation between the atrial filling parameters of Doppler echocardiography and radionuclide angiography. The peak filling rates were closely correlated with the systolic function (PFRFF:r = 0.86; p < 0.001) and were reduced with an impaired systolic function.(ABSTRACT TRUNCATED AT 250 WORDS)