ABSTRACT
Background: Many prior studies have utilized thoracic or lumbar spinal anesthesia with isobaric/hyperbaric bupivacaine or Ropivacaine and opioids for laparoscopic cholecystectomy and have reported variable results. our study is centered around addressing the occurrence of intraoperative right shoulder pain and its potential impact on the need for conversion to general anesthesia.Methods: This is a prospective comparative case series study in which 70 patients scheduled for elective laparoscopic cholecystectomy were. Patients in Group R received 1 ml (1 mg) of Hypobaric Ropivacaine 0.1% at T10-11 followed by 25 mcg fentanyl, and 5 mg Isobaric Ropivacaine 0.5% whereas patients in Group B received 1.5 ml (7.5 mg) Isobaric levo Bupivacaine 0.5% and 25 mcg fentanyl at T8-T10. Patients in both the groups were compared for incidence of shoulder tip pain and Hemodynamic stability.Results: Both techniques achieved satisfactory anaesthesia quality, with similar results in surgical anaesthesia onset. Average surgical duration was 45-75 minutes with average of 60 mins with longer durations in two cases common to both the groups. In group R there was there was no bradycardia or hypotension recorded more than 10% of preinduction vitals. Whereas in group B 2 patients had bradycardia and hypotension more than 10% of preinduction vitals. Conclusions: The T10-11 technique using low-dose (6 mg) hypobaric ropivacaine and isobaric Ropivacaine appears to be superior in terms of shoulder tip pain, and hemodynamic stability compared to the T8-T10 technique using isobaric levo-Bupivacaine alone in higher dose.
ABSTRACT
Interscalene block is commonly used for anesthesia and analgesia in patients undergoing surgeries of shoulder and upper arm. Combination of lignocaine and bupivacaine is commonly used for this purpose. Addition of dexamethasone to local anesthetic drugs is reported to cause rapid onset and enhance the duration of anesthesia and analgesia. We conducted this study to compare the analgesic effect in interscalene block with local anesthetic versus local anesthetic and steroid. Methods: This was a prospective comparative study conducted in the department of anesthesiology of a tertiary care medical college situated in an urban area. In this study total 120 patients undergoing upper limb surgery under interscalene block were included on the basis of a predefined inclusion and exclusion criteria. Out of these 120 patients 60 patients received lignocaine, adrenaline, bupivacaine and dexamethasone (Group A) whereas remaining 60 patients were given lignocaine, adrenalin, bupivacaine and distilled water (Group B). The comparison of onset of analgesia, onset and duration of motor blockade as well as onset and duration of sensory blockade was compared in both the groups. For statistical analysis SSPE 21.0 software was used and P value less than 0.05 was taken as statistically significant. Results: Majority of the studied cases belonged to the age group of 21-30 years (24.17%) followed by 31-40 years (23.33%). The mean age of patients in both the group was found to be comparable with no statistically significant difference between mean age of both the groups (P>0.05). The mean time for onset of analgesia in Group A and Group B was found to be 7.43 +/- 1.65 and 6.01+/- 1.55. The difference was found to be statistically significant (P<0.0001). The duration of sensory and motor blockade was found to be 14.6+/-12.5 and 11.93+/- 1.48 in group A. where as in group B it was found to be 11.8+/-0.8614 and 8.85 +/- 1.15 respectively. Onset of sensory blockade was found to be 7.01 +/-2.12 and 9.09 +/- 3.08 in group A and group B respectively. The difference was found to be statistically significant for duration of sensory and motor blockade. Onset of motor blockade was found to be comparable in both the groups with no statistically significant difference (P>0.05). Conclusion: Addition of dexamethasone to local anesthetic agent for interscalene block is associated with rapid onset of analgesia and a prolonged duration of motor and sensory blockade.