Open AccessAssessment of the intracardiac left to right shunts with a single scintillation probe
Author(s) -
Tendera M.,
Bartoszewski A.,
Foremny J.,
Salamon A.,
Wodniecki J.,
MaleckaTendera E.
Publication year - 1989
Publication title -
clinical cardiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.263
H-Index - 72
eISSN - 1932-8737
pISSN - 0160-9289
DOI - 10.1002/clc.4960120810
Subject(s) - intracardiac injection , medicine , hemodynamics , scintillation , radionuclide ventriculography , nuclear medicine , technetium , shunt (medical) , cardiac catheterization , technetium 99 , radionuclide , cardiology , radiology , ejection fraction , heart failure , physics , electrical engineering , quantum mechanics , detector , engineering
Abstract In order to assess the accuracy of pulmonary time‐activity curves obtained at bedside with a single scintillation probe and Technetium‐99m‐labelled erythrocytes, pulmonary to systemic flow ratio (Qp:Qs) was calculated for radionuclide and hemodynamic investigations in 104 patients with suspected intracardiac left to right shunts. Cardiac catheterization confirmed the presence of shunts in 76 patients. Pulmonary time‐activity curve was 100% sensitive, 88% specific, and 96% accurate in detecting the shunt. Correlation between the radionuclide and hemodynamic Qp:Qs was excellent (r=0.93). Results were classified in four quantitative categories according to the Qp:Qs values. In 76 patients (73%) radionuclide and hemodynamic data fell in the same category. We conclude that radionuclide pulmonary time‐activity curves generated with a scintillation probe is a reliable method in quantitative assessment of intracardiac left to right shunts.