Effectiveness of Pudendal Nerve Block in reducing Post-Op Pain after Proctological Interventions in patients aged 18 to 70 years old

Patients were draped using aseptic technique in the lithotomy position and scrubbed. After the completion of surgery whether for hemorrhoids or anal fistula, the anatomical landmarks were identified for Pudendal Nerve block for Group A patients. The agents used for the block were 5 ml of 2% Lignocaine mixed with 10 ml of 0.5% Bupivacaine. Trans perineal approach was used for the block. A 25 Gauge, 10 cm, short bevel Spinal Needle was inserted perpendicular to the skin medial to the ischial tuberosity and advanced in the sagittal plane. The confirmation of needle position in proximity of the Pudendal nerve was made upon the slight contraction of the anal sphincter. The anesthetic agents were then injected. Patients were later on shifted to the post operative ward and monitored for pain for 8 hours post surgery. Group B "control" group did not receive any anesthetic. Direct observation and Numeric rating scale was used for pain levels measurement.