With the development of a balloon thermistor tipped, double lumen catheter combined with a simple compact analog computer, the problems which previously prevented the utilization of thermal dilution at the bedside have been effectively solved. Room temperature saline is injected via the subclavian vein, and the temperature change is recorded by the thermistor in the pulmonary artery; cardiac output is read off immediately. Cardiac outputs can be determined as frequently as every 20 sec using saline injections of 7 to 10 cc for each determination. Consistency is in the range of less than 100 cc differences between sequential determinations.
|Original language||English (US)|
|Number of pages||6|
|Journal||J Assoc Adv Med Instrum|
|State||Published - Jan 1 1972|
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