title: [Effect of varied pacemaker stimulation on left ventricular volume data--studies with radionuclide ventriculography].
abstract: Left ventricular performance (parameters: EDV, ESV, EF, cardiac output) was studied by gated radionuclide ventriculography in 55 patients with ventricular or AV-sequential pacemakers. 23/55 patients were followed over 4-6 months. EDV and SV decreased significantly (p less than 0.01) and cardiac output increased (p less than 0.01) with changing pacing rate from 70-72 to 100/min. After 4-6 months a reduction of cardiac output was found in 15/23 patients. As compared to ventricular pacing, a significantly higher cardiac output was found during AV-sequential pacing. These nuclear data indicate the dependence of left ventricular performance on pacing mode. From non-invasive methods an individual adapted pacing mode can be derived.
mesh_terms: D000328:Adult; D000368:Aged; D001919:Bradycardia / Q000000981:diagnostic imaging / Q000628:therapy*; D002302:Cardiac Output; D003327:Coronary Disease / Q000000981:diagnostic imaging; D005260:Female; D005500:Follow-Up Studies; D006333:Heart Failure / Q000000981:diagnostic imaging; D006339:Heart Rate; D006352:Heart Ventricles / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010138:Pacemaker, Artificial; D011877:Radionuclide Imaging; D013318:Stroke Volume
vernacular_title: Auswirkung unterschiedlicher Schrittmacherstimulation auf linksventrikuläre Volumendaten - Untersuchungen mit der Radionuklid-Ventrikulographie.