Pulmonary artery catheterization is the insertion of a catheter into a pulmonary artery. Its purpose is diagnostic; it is used to detect<unk>  failure or sepsis, monitor therapy, and evaluate the effects of drugs.  The pulmonary artery catheter allows direct, simultaneous measurement of pressures in the<unk>  atrium,<unk>  ventricle, pulmonary artery, and the filling pressure ("wedge" pressure) of the left atrium.
The pulmonary artery catheter is frequently referred to as a Swan-Ganz catheter, in honor of its inventors Jeremy Swan and William Ganz, from Cedars-Sinai Medical Center. The idea for this catheter (as later revealed by Dr. Swan) came about from the observation of sailboats on the water.
Right heart catheterization
Coronary computed tomography
Cardiac electrophysiology
Transthoracic needle aspiration
Palpitation electrocardiogram
CT pulmonary angiogram
Cardiovascular magnetic resonance imaging 
Cardiac catheterization