title: Venous obstruction in permanent pacemaker patients: an isotopic study.
abstract: Isotope venography was used to study the venous circulation proximal to the superior vena cava in two groups of pacemaker patients, one with a single endocavitary electrode and the other with multiple pacing catheters. A control group of patients without pacemakers was also studied. Numerous abnormalities were found, especially in the group with multiple electrodes. These findings suggest that venous obstruction is a common complication of endocardial pacing.
mesh_terms: D002304:Cardiac Pacing, Artificial / Q000009:adverse effects*; D006801:Humans; D010690:Phlebography; D011877:Radionuclide Imaging; D013667:Technetium; D013924:Thrombophlebitis / Q000000981:diagnostic imaging* / Q000209:etiology
chemical_list: D013667:Technetium