A Study of Injection 0.75% Ropivacaine for its Duration of Anaesthesia/Analgesia in Transversus Abdominis Plane Block for Unilateral Inguinal Hernia Repair Under Ultrasound Guidance

Objectives: The point of the examination is to assess transversus abdominis plane square for postoperative absence of pain in patients experiencing inguinal hernia fix medical procedure with the dose of 0.75 % Ropivacaine& to quantify the hour of first solicitation for salvage absence of pain.

Place of Study: Aneasthesia Department, SreeBalajiMedical College and hospital, Chromepet, Chennai. Period of Study: August 2016 to February 2018(18 months).

Study Design: Cross sectional analytical study.

Materials and Method: All patients who underwent unilateral inguinal hernioplasty surgery who were given 0.75% ropivacaine injection are included in the study, after explaining the nature of the study and obtaining informed consent for participating in the study. They are classified into different age group categories. P value < 0.05 was considered as statistically significant.

Results: The attempt to explore the efficacy of 0.75% ropivacaine in ultrasound guided - transversus abdominis plane block in patients undergoing unilateral inguinal hernioplasty under spinal anaesthesia found that the duration of analgesia was reasonable with the dosage of 0.75% ropivacaine. The vital parameters were well maintained among the patients throughout the study period. There were no complications like local anaesthetic toxicity noted among the patients and the drug was proved to be effective.

Conclusion: About 15 ml of 0.75 % ropivacaine for transverse abdominis plane block produces satisfactory and comparable sensory block, related to duration, analgesia and VAS score. The haemodynamics were stable in both the groups. The lower CNS and cardio toxicity of ropivacaine may help in reducing the risk to the patients. The clinical correlation in duration, dose of analgesia and VAS score among the patients, when injected in required volume for TAP block under ultrasound guidance. Ropivacaine has a potentially improved safety profile when compared to any other similar drug. Hence it may offer an advantage.