<prompt> Swan Ganz catheter is used for what ?LV filling pressurePulmonary capillary pressurePulmonary aery occlussion pressuresaturation in mixed venous blood  <response>: Positioning of a balloon flotation Swan-Ganz catheter in the pulmonary aery permits monitoring of LV filling pressure; this technique is useful in patients who exhibit hypotension andor clinical evidence of CHF. Cardiac output can also be determined with a pulmonary aery catheter. There is controversy regarding the use of pulmonary aery Swan-Ganz catheters in patients with established or suspected CS . Their use is generally recommended for measurement of filling pressures and cardiac output to confirm the diagnosis and optimize the use of IV fluids, inotropic agents, and vasopressors in persistent shock . REF : Harrison;s principle of internal medicine,20th edition,pg no.2234 