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Transit time heterogeneity of bolus flow through the heart and lungs in patients with left-to-right intracardiac shunt.
Physiol Meas
May 1999
Department of Clinical Physiology, Kuopio University Hospital, Finland.
Knowledge of the contributions of transit time heterogeneity to the cardiopulmonary system is important for understanding cardiopulmonary function in patients with intracardiac shunt. We determined the heterogeneity of blood transit times occurring between the right atrium and the left ventricle. Eighty two patients with suspected left-to right shunt were investigated with first-pass 99mTc-labelled red blood cell radiocardiography at supine rest.
View Article and Find Full Text PDFA simultaneous assessment of relationship of central and renal hemodynamic parameters has been performed in patients with a renal transplant of different functional performance. Radionuclide routine techniques of one-passage radiocardiography and indirect renal angiography in single bolus intravenous introduction of radiopharmaceutical were used. Three groups of patients were identified according to functional capacity of the renal transplant: 15 patients with satisfactory function of the transplant for 85 days on the average (group 1); 8 patients with unstable function of the transplant for 155 days (group 2); 7 patients with poor function of the transplant for 375 days on the average.
View Article and Find Full Text PDFScatter correction for first-pass radiocardiography.
Nucl Med Commun
November 1996
Department of Clinical Physiology, Tampere University Hospital, Finland.
The effect of the dual window scatter subtraction method was tested for first-pass radiocardiography using 99Tcm. The photopeak window of 126-154 keV (20%) and Compton window of 93-125 keV (30%) were used. The set of scattered images was multiplied by a factor of 0.
View Article and Find Full Text PDF[Experiences with running therapy in essential hypertension].
Praxis (Bern 1994)
March 1995
Universitätsklinikum Charité, Medizinische Fakultät der Humboldt-Universität zu Berlin.
The authors report about a long-term study (three months) on blood pressure and heart rate at rest and during exercise (50 W) in hypertensive patients (WHO stadium I and I, n = 24) running twice a week. The control group were 15 healthy people who were running as well. In addition, the peripheral microcirculation (musculus tibialis anterior) was recorded by the Xenon-133 muscle clearance method and the cardiac output by means of radiocardiography (Indium 113m) as parameter of central hemodynamics.
View Article and Find Full Text PDFMarkedly enlarged right atrium associated with physical signs of tricuspid regurgitation--a cause of congestive heart failure in the elderly.
Jpn Circ J
September 1994
Department of Cardiology, Tenri Hospital, Japan.
We retrospectively examined 8 patients who had classical physical signs of tricuspid regurgitation associated with congestive heart failure, the cause of which was not identified by echocardiography. Exclusion criteria were as follows; 1) peak velocity of tricuspid regurgitation greater than 3 m/sec, 2) disturbance of left ventricular wall motion, 3) severe mitral regurgitation and/or aortic regurgitation by color Doppler echocardiography, and 4) structural abnormalities of tricuspid and mitral valve complexes. The subjects had a mean age of 81 years and all showed atrial fibrillation without tachycardia.
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