Respiratory effects on systolic time intervals during pericardial effusion.

摘要: Pericardial effusion without cardiac tamponade is defined by the detection of excessive pericardial fluid clinical manifestations, particularly pulsus paradoxus (inspiratory decrease in systolic blood pressure > 10 mm Hg) and jugular venous distention. Nineteen consecutive patients heart or lung disease who had findings no evidence were investigated echocardiography: 14 with 5 noneffusive (“dry”) pericarditis. Patients an inspiratory left ventricular ejection time (ΔLVET) 17.9 ± 5.78 ms increase preejection period (ΔPEP) 12.1 3.78 ms, each well beyond respective respiratory changes measured normal subjects. The control dry pericarditis a mean ΔLVET ΔPEP only 8.0 7.0 respectively. Of effusion, 6 whose showed change 13.7 11.2 comparable to other 8 2 Hg. We conclude that although was not present, physiologically inert. If satisfactory echocardiogram available, exaggerated fluctuation intervals may be fluid.