The Effect of Left Uterine Displacement on Parturient Cardiovascular System

"The following measured variables were recorded using electric cardiometry heart rate, stroke volume, cardiac output, systemic vascular resistance.~these parameters are measured on arrival to operating room before subarachnoid block in three different angles of lateral uterine tilt ( 0, 15 and 30 degrees )"

two Iv lines are inserted and 500cc crystalloid is administered to parturient .

Subarachnoid block (SAB) was performed in sitting position under complete asepsis using 25 g spinal needle. SAB was achieved by intrathecal injection of 10 mg hyperbaric bupivacaine plus 25ug fentanyl. Success of SAB was tested within five minutes after drug injection. SAB was considered successful if adequate block reached T4 dermatome.

after SAB the following measured variables were recorded using electric cardiometry heart rate, stroke volume, cardiac output, systemic vascular resistance at three different angles of left uterine lilt (0,15,30 degrees)