How is dx and tx of tamponade?

Dx (TTE, CT and MRI, pericardial fluid analysis (from an effusion often is exudative, bloody if due to neoplasm, renal failure, dialysis, TB, RF, cardiac injury, MI, transudate in HF/ we should look for RBC and WBC, cytology, cultures, PCR TB) TX (pericardiocentesis, surgical drainage through limited subxiphoid thoracotomy)