"The first balloon flotation flow-directed catheter that did not require image-guidance for insertion and therefore could be inserted at the bedside was introduced in 1970 2 by William Ganz (1919-2009) 3 and Harold James Charles "Jeremy" Swan (1922-2005) 4, both cardiologists at Cedars-Sinai Hospital, Los Angeles."
"Pulmonary artery catheters (PAC or Swan-Ganz catheters) are balloon flotation catheters that are inserted into the pulmonary arteries. They can be inserted simply, quickly, with little training and without fluoroscopic guidance at the bedside, even in the seriously ill patient."