Hemodynamic changes in puerperas undergoing elective cesarean section with combined spinal and epidural anesthesia via the BioZ.com system

Objective To observe the hemodynamic changes by the BioZ.com noninvasive hemodynamic monitoring system in puerperas undergoing cesarean section with combined spinal and epidural anesthesia. Methods The hemodynamic changes were consecutively monitored by the BioZ.com system in 19 ASA ⅠorⅡ puerperas undergoing elective cesarean section with combined spinal and epidural anesthesia. Hemodynamic parameters including mean arterial pressure (MAP),heart rate (HR),stroke volume (SV),cardiac output (CO),cardiac index (CI),systemic vascular resistance (SVR),thoracic fluid content (TFC),and left ventricular ejection time (LVET) were recorded before and 5 and 15 minutes after anesthesia,1 minute before and 3 minutes after cesarean delivery,and completion of the procedure. Results No significant changes in HR,TFC,and LEVT occurred at different time points (P 0.05). SVR began to decrease 15 minutes after anesthesia and maintained at a low level when the procedure was completed(P 0.01). SV,CO and CI began to increased 15 minutes after anesthesia (P 0.05). MAP was markedly lower at completion of the surgery (P 0.01). HR and MAP remained stable while SV,CO and CI were obviously elevated but SVR was evidently declined (P 0.05). SVR was negatively related with SV,CO and CI (P 0.01) but positively with MAP (P 0.01). Conclusion Application of the BioZ.com system to monitor the hemodynamic changes in puerperas undergoing cesarean section provides more reliable evidence for the perioperative management.