<prompt> Answer this question truthfullyWhat does surgery for HIV-induced pericarditis entail?  <response>: <reason> Symptomatic large effusions without cardiac tamponade:Requires pericardiocentesis for both therapeutic and diagnostic purposes, to identify possible etiology.Pericarditis with cardiac tamponade:Occurs in 33-40 of patients. Warrants immediate pericardiocentesis and a catheter is placed in the pericardial sac for the next 48 hours to continuously drain fluid by underwater-seal suction.Recurrent pericardial effusion:Either subxiphoid pericardiotomy with creation of a pericardial window or balloon pericardiotomy can be considered. Large pericardial effusions with unknown etiology:Empiric antituberculous therapy for M.tuberculosis have shown some benefit in patients with AIDS. 