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Objective: To observe the peripheral artery cardiac output monitor -pump coronary artery bypass surgery . Methods: Optional period 15 cases of the line of off-pump coronary artery bypass surgery patients , preoperative puncture the radial artery connecting peripheral artery cardiac output monitor ( the FloTrac TM sensor and Vigileo TM monitor , EdwardsLifesciences) and place a pulmonary artery catheter (744HF75, Edwards Lifesciences) for continuous cardiac output monitoring . Record the stability of the induction of anesthesia , take the internal mammary artery ( foundation level ) , exposure to different target vessel ( left anterior descending branch , obtuse marginal branches , after descending ) and off his chest after the hemodynamic parameters . RESULTS : The average age of the patients (67.8 ± 5.6) years of age, preoperative left ventricular ejection fraction ( 61 ± 10 ) % . Anastomosis target vessel , in addition to the heart rate , the rest of the hemodynamic parameters were changed significantly . The a largest changes to match the obtuse marginal branches , mean arterial pressure, the peripheral artery cardiac index , stroke index ( 90 ± 16 ) mmHg , respectively ( 2.7 ± 0.4 ) L / min / m 2 , (37.8 ± 6.5) ml / bpm / m 2 dropped ( 66 ± 14 ) mm Hg ( 1.9 ± 0.7 ) L / min / m 2 ( 26.4 ± 8.1) ml / bpm / m 2 (P <0.05); stroke volume variation increased from (6.4 ± 2.8)% to ( 15.7 ± 13.0 ) % ( P <0.05 ) ; peripheral arterial minimize cardiac index consistent obtuse marginal branches nowadays thermodilution continuous cardiac index fell to the lowest in descending coronary artery anastomosis ; Bland-Altman analysis showed peripheral artery cardiac output and continuous thermodilution cardiac output good consistency , bias 0.02L/min/m 2 < / sup> accuracy 1.13L/min/m 2 < / sup> ; turning the heart of the process in cardiac index , peripheral arterial changes in mean arterial pressure changes correlated well (r = 0.687, P <0.001), the correlation of changes in stroke volume variation with peripheral arterial changes in the cardiac index (r = 0.468, P <0.005). Conclusion : peripheral arterial cardiac output monitoring to provide hemodynamic changes in the parameters of the reference value , in good agreement with the traditional thermodilution measurement of CCO -pump coronary artery bypass surgery , and respond more quickly , can be widely used for intraoperative continuous monitoring of cardiac output and contribute to capacity evaluation .
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