Cardiac Output Measurement Using the Non-Invasive Cardiac Output (NICO) Monitor: A Comparative Study with the Standard Thermodilution Technique / 日本心臓血管外科学会雑誌
Japanese Journal of Cardiovascular Surgery
;
: 6-8, 2004.
Article
in Japanese
| WPRIM
| ID: wpr-366931
ABSTRACT
The non-invasive cardiac output (NICO) monitor is a new device in order to measure cardiac output (CO). A rebreathing circuit is built in the NICO monitor and CO is calculated using the Fick CO<sub>2</sub> equation. We compared this technique with the standard thermodilution (TDCO) technique in patients with thoracic and abdominal surgery. Thirty-two paired data were obtained in 17 patients. Correlation between the two methods in patients with controlled mechanical ventilation (CMV) was fair, with a correlation coefficient of 0.85. However, the correlation coefficient of the two methods was 0.60 in spontaneous breathing patients. Bland-Altman analysis showed a bias of 0.24±0.68 (mean±2SD) in CMV patients and 1.44±1.28 in spontaneous breathing patients. The NICO value was inversely proportional to an end-tidal CO<sub>2</sub> difference (ΔETCO<sub>2</sub>) between pre-rebreathing and post-rebreathing. The large bias in spontaneously breathing patients might be due to a small ΔETCO<sub>2</sub> in spontaneously breathing patients. The NICO monitor has a tendency to measure higher CO values in spontaneously breathing patients.
Full text:
Available
Index:
WPRIM (Western Pacific)
Language:
Japanese
Journal:
Japanese Journal of Cardiovascular Surgery
Year:
2004
Type:
Article
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