Sub Xyphoid Pericardial Window :  It could be done under local or general anaesthesia. A small vertical midline incision is made over the xyphoid process on to the linea alba of abdomen. Xyphoid process is excised or retracted. The diaphragm is dissected away from the under surface or sternum and pericardium is incised under vision. Fluid is removed and adhesions are released gently with a blunt sucker, Fluid and tissue from pericardium are sent for microbiological and histopathological examination. A drain is inserted and connected to 10-15 mm or suction. The wound is closed lightly. Drain could be left for a few days till drainage comes down.