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Swan sitting on its packaging. A pulmonary artery catheter (PAC), also known as a Swan-Ganz catheter or right heart catheter, is a balloon-tipped catheter that is inserted into a pulmonary artery in a procedure known as pulmonary artery catheterization or right heart catheterization.
William Ganz (January 7, 1919 – November 10, 2009) was a Slovakia-born American cardiologist who co-invented the pulmonary artery catheter, often referred to as the Swan-Ganz catheter, with Jeremy Swan in 1970. [1] The catheter is used to monitor heart conditions, especially in intensive care units.
The other thermodilution method is to sense the temperature change from a liquid injected in the proximal port of a Swan-Ganz to the distal port. Cardiac output is mathematically expressed by the following equation: = where CO = cardiac output (L/sec) SV = stroke volume (ml) HR = heart rate (bpm)
Swan was born on 1 June 1922 in Sligo Ireland. His parents were both physicians, Harold John Swan and Marcella Bertile Swan née Kelly. His mother called him "Jeremy" to limit confusion and the name stuck throughout his life. Swan's early education was at Castle Rock School.
The Flow waveform for the human respiratory system in lung ventilators, is the shape of air flow that is blown into the patient's airways.Computer technology allows the practitioner to select particular flow patterns, along with volume and pressure settings, in order to achieve the best patient outcomes and reduce complications experienced while on a mechanical ventilator.
A photoplethysmogram (PPG) is an optically obtained plethysmogram that can be used to detect blood volume changes in the microvascular bed of tissue. [1] [2] A PPG is often obtained by using a pulse oximeter which illuminates the skin and measures changes in light absorption. [3]
Traces can be stored indefinitely or written out to some external data storage device and reloaded. This allows, for example, comparison of an acquired trace from a system under test with a standard trace acquired from a known-good system. Many models can display the waveform prior to the trigger signal.
Then their wave function is always well-localized in space, so well-localized that it behaves, for all practical purposes, like a point moving in space according to Newton's laws. In this sense, collapse models provide a unified description of microscopic and macroscopic systems, avoiding the conceptual problems associated to measurements in ...