| Accuracy of Measurement
of Cardiac Output and Circulating Blood Volume Levels by Pulse
Dye Densitometry, and Postoperative Management of the Open Heart
Surgery |
(Department of Surgery II, Ehime University School
of Medicine, Ehime, Japan)
| Yoshihiro Hamada |
Tetsuya Yamamoto |
Tatsuhiro Nakata |
| Yasuaki Kashu |
Yuji Watanabe |
Hiroyuki Kikkawa |
| Kanji Kawachi |
|
|
|
Using the DDG-2001 pulse dye densitometer,
cardiac output (CO) and circulating blood volume (BV) were determined
before and after the operation, and its accuracy and the significance
of postoperative management were studied. Referring to 14 cases
undergoing open heart surgery, CO and BV were determined using
the DDG-2001 before application of the cardiopulmonary bypass
and immediately, 4h and 12h after the operation. The level of
CO was compared with that determined by the thermodilution method,
and the level of BV with that calculated from hemoglobin levels
determined before and after the cardiopulmonary bypass application
and the priming volume in the circuit. Further, body fluid balance
after the operation was calculated, and its relation to BV was
studied. As to the correlation coefficient and inclination of
the regression line, they were 0.77 and 0.849 with CO, and 0.821
and 0.844 with BV, respectively. Upon completion of the operation
BV decreased, but increased again 4h and 12h later, although
the body fluid balance was negative. CO and BV determined by
the pulse dye densitometry favorably correlated with those determined
by other methods. Immediately after the operation BV decreased,
but then increased in the course of time, although the body fluid
balance was negative.
Jpn. J. Cardiovasc. Surg. 29: 156-160 (2000) |
|
