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Volume 12 Issue 4 ( October-December ) 2023

Original Articles

Comparative evaluation of ultrasound guided nerve stimulator technique versus landmark guided nerve stimulator technique for obturator nerve block in transurethral resection of bladder tumor done under subarachnoid block: A prospective study
Dr. Ajita Mishra, Dr. Vikrant Prakash Keshariya, Dr. Sanjeev Kumar Agrawal, Dr. S. Kumar

Background: Bladder cancer is the ninth most common cancer diagnosed globally. Recent literature data reported ultrasound-guided obturator nerve block techniques to be safe for transurethral resection surgery with success rates of up to 100%. Aim: The present study aimed to comparatively assess the ultrasound-guided nerve stimulator technique versus landmark-guided nerve stimulator technique for obturator nerve block in transurethral resection of bladder tumor done under subarachnoid block. Methods: The study assessed 50 subjects from both genders and age range of 30-80 years undergoing transurethral resection of bladder wall tumors randomly divided into two groups of 25 subjects each where Group I subjects were given ultrasound guided nerve stimulator group and Group II subjects landmark guided nerve stimulator group. All subjects were assessed for success rate of obturator nerve block, time taken for block, conversion to general anesthesia, and complications related to surgery bladder injury and block vascular injury. Results: It was seen that the success of group I which was ultrasound guided nerve stimulator technique was 96 % and group II which was the landmark guided nerve stimulator technique was 92% with no statistically significant difference among the groups with p-value= 0.600. The mean time taken to perform the block in group I was 6.4±.69 min and in group II was 4.0±.50 min and the difference was statistically significant (p-value <0.000). In groups I and II, 1 and 2 cases respectively were converted to general anesthesia to avoid complications and for patient safety. No complications were seen with block or surgery. Conclusion: The present study concludes that the rate of successful obturator nerve block is comparable between ultrasound guided nerve stimulator technique and landmark-guided nerve stimulator technique with the slightly longer time to perform the block in the ultrasound nerve stimulator technique.

 
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