Comparison of Analgesic Efficacy Between Ultrasound-Guided Paravertebral Block and Erector Spinae Plane Block Using Ropivacaine After Percutaneous Nephrolithotomy in Medical College Kolkata

TITLE - COMPARISON OF ANALGESIC EFFICACY BETWEEN ULTRASOUND-GUIDEDPARAVERTEBRAL BLOCK AND ERECTOR SPINAEPLANE BLOCK USING ROPIVACAINE  AFTER PERCUTANEOUSNEPHROLITHOTOMY IN MEDICAL COLLEGE, KOLKATA

Acute postoperative pain after percutaneousnephrolithotomy surgery often hinders early recovery and may also lead tochronic post surgical pain, which lowers quality of life. Paravertebral blockis an excellent choice for postoperative analgesia. The erector spinae planeblock is also emerging as an effectivealternative.

Ropivacaine is a long-acting amide localanaesthetic. It exhibits a similar mechanism of action to other localanaesthetics in that it reversibly inhibits sodium ion influx in nerve fibers. Ropivacaine has some unique properties.Ropivacaine is less lipophilic than other local anaesthetics and is less likelyto penetrate large myelinated motor fibers. It, therefore, selectively acts onthe nociceptive

A, B, and Cfibers over the AB (motor) fibers resulting in a relatively reduced motorblockade. Thus, ropivacaine has a greater degree of motor sensorydifferentiation, which can be useful in this scenario where motor blockade isundesirable. Ropivacaine  hassignificantly less cardiotoxicity and neurotoxicity.  The aim of this study is tocompare the analgesic efficacy of paravertebral block anderector spinae plane block using Ropivacainein preventing acute post surgical pain following Percutaneous nephrolithotomy.