[Effects of low dose colforsin daropate hydrochloride in patients undergoing off-pump coronary artery bypass grafting].
BACKGROUND
We evaluated retrospectively the effectiveness of low dose colforsin daropate hydrochloride (CDH) in 12 patients undergoing off-pump coronary artery bypass grafting (CABG).


METHODS
Low dose CDH was administered intravenously at a rate of 0.05-0.1 microg x kg(-1) x min(-1) from sternotomy to the end of coronary artery anastomosis. Hemodynamic measurements were made before infusion of CDH, and before, during, and after coronary artery anastomosis.


RESULTS
Heart rate was significantly higher before, during and after the anastomosis compared with the value before the infusion of CDH. Heart rate was also significantly higher after the anastomosis compared with the value before the anastomosis. Systolic blood pressure, mean pulmonary pressure, right atrial pressure and pulmonary artery wedge pressure showed no significant changes after the start of infusion of CDH. Cardiac output was significantly higher before, during and after the anastomosis compared with the value before the infusion of CDH. Systemic vascular resistance was significantly lower before and during anastomosis compared with the value before the infusion of CDH.


CONCLUSIONS
Infusion of low dose CDH prevents the elevations of mean pulmonary artery pressure, right atrial pressure and pulmonary artery wedge pressure without reducing systolic bood pressure during coronary artery anastomosis. Cardiac output was significantly increased, and SVR as well as PVR were significantly decreased after the infusion of CDH. In patients undergoing off-pump CABG, we recommend infusion of low dose colforsin daropate hydrochloride from sternotomy to the end of coronary artery anastomosis.
Sha
Keiichi
K
Department of Anesthesiology, Nara Medical University, Kashihara 634-0063.
Okita
Toshikazu
T
Fujiwara
Aki
A
Nomura
Yasumitsu
Y
Uji
Makiko
M
Shinjou
Takeaki
T
Nagai
Asami
A
Matsuda
Tomohiro
T
Hirai
Katsuji
K
Furuya
Hitoshi
H
D002316:Cardiotonic Agents / Q000008:administration & dosage*; D005576:Colforsin / Q000008:administration & dosage* / Q000031:analogs & derivatives*; D047549:Coronary Artery Bypass, Off-Pump; D003327:Coronary Disease / Q000503:physiopathology / Q000601:surgery; D005260:Female; D006439:Hemodynamics; D006801:Humans; D007262:Infusions, Intravenous; D007430:Intraoperative Care; D008297:Male; D012189:Retrospective Studies; D016896:Treatment Outcome; D014665:Vasodilator Agents / Q000008:administration & dosage*
D002316:Cardiotonic Agents; D014665:Vasodilator Agents; C122001:colforsin daropate; D005576:Colforsin