Prediction of Maternal Arterial Hypotension After Spinal Anesthesia by Passive Leg Raise Test.

"Clinical hemodynamic and echocardiographic evaluation in two stages T1 and T2, before performing the spinal anesthesia, carried out by a doctor different from the doctor in charge of the parturient in the operating room to ensure the blind hemodynamic results before the spinal anesthesia, in particular those of the passive leg raise test (PLR) :~1. T1: clinico-echographic evaluation in dorsal decubitus position (45 °) with cushion under the right buttock.~2. T2: clinico-ultrasound evaluation after performing the PLR.~ Then, clinical hemodynamic evaluation during two periods T3 and T4:~3. T3: conditioning time of the parturient in the operating room during which clinical hemodynamic monitoring is set up and the basic values of arterial pressures (systolic, diastolic and mean) and heart rate are defined.~4. T4: period after performing spinal anesthesia until clamping of the umbilical cord."