Effect of Intra-abdominal Pressure to the Level of the Sensory Block at Caesarean Section Under Spinal Anesthesia

The level of intra-abdominal pressure was measured via a Foley catheter through the urinary bladder. After the introduction of a 30 mL of warm saline. Measurement of the water column in the system was made from the zero level to the mid-axillary line, for 10 minutes, after quiet breathing pregnant at the time of expiration.