Right ventricular outflow obstruction secondary to right-sided tamponade following myocardial trauma.

A case of isolated tamponade of the right side of the heart, seen as an abrupt change in the cardiac silhouette and as right ventricular outflow obstruction following myocardial trauma, is presented, along with a review of the English-language literature on delayed postoperative tamponade and loculated pericardial effusion. The importance of a low, fixed cardiac output and nonspecific physical findings in suggesting the clinical diagnosis is emphasized. The absence of many of the classic signs and symptoms of pericardial tamponade is noted, as is the possibility of unusual changes in the appearance or function of the heart in the presence of a loculated effusion. Finally, the differential diagnosis and the results of a variety of diagnostic techniques are discussed.