Quote from AJACKSON1048
Big debate at my icu unit. currently using ice water.. New doctor came and states we are to use room temp for the cardiac injectate and also not to disconnect the injection port from the system. I have took a stand with him because any place I have ever worked we used room temp. and when you disconnect you have caused a huge infection concern. Anyone agree or disagree?
Unless you are using an old system for swan measurements it should be room temperature. I would also look up the manufacture's recommendations for your equipment.
Here is an abstract I found on Medscape.com.
Thermodilution measurement of cardiac output in patients with low output: room-temperature versus iced injectate.
AMD Special Report CME Newsletter: Volume 3
Drs. Paul Sternberg and Franco Recchia evaluate possible changes in ophthalmic practice with anti-VEGF agents; Dr. Paul Latkany presents an unusual case; Dr. Robert Bernardino reviews the literature.
Am J Crit Care. 1998; 7(6):436-8 (ISSN: 1062-3264)
Kiely M; Byers LA; Greenwood R; Carroll E; Carroll D
Department of Nursing, Massachusetts General Hospital, Boston, USA.
BACKGROUND: Measurements of cardiac output with the thermodilution technique add to data for clinical decision making and therefore must be valid and reliable. However, the results of studies on the accuracy of values obtained with room-temperature and iced injectates, especially in patients with high or low cardiac output, have been conflicting. OBJECTIVE: To determine the effect of the temperature of the injectate (iced or room temperature) on cardiac output values obtained with the thermodilution technique in critically ill adults with known low cardiac output. METHODS: A convenience sample of 50 subjects (41 men and 9 women) who had a cardiac index of less than 2.5 (calculated as cardiac output in liters per minute divided by body surface area in square meters) before the study had cardiac output measured by using a closed system and manual injections of room-temperature and iced injectates. RESULTS: A paired t test indicated no significant difference between iced and room-temperature injectates for cardiac output (iced, 3.62 L/min; room temperature, 3.71 L/min; t = 0.99; P = .327) and cardiac index (iced, 1.95; room temperature, 1.99; t = 0.71; P = .482). CONCLUSION: The findings support the practice of using room-temperature injectate to measure cardiac output in patients with low cardiac output.