Abstract:

Introduction: Hyperbaric forms of ropivacaine and bupivacaine were frequently prefered to perform in spinal anesthesia for orthopedic surgery. It was reported that hyperbaric form of ropivacaine which obtained by adding glucose to the isobaric form, was adequate to provide an effective spinal anesthesia. In the present study; we aimed to compare the effects of hyperbaric ropivacaine and bupivacaine in spinal anesthesia. Material and Methods: After the Ethics Committee approval, 60 patients whose planned hip and lower extremity operation, ages between 20 and 78, ASA I and II, were included into study. Patients were seperated into two randomized groups; Group A and Group B, after informed consents were obtained. Hyperbaric bupivacaine 12.5 mgs to Group A and hyperbaric ropivacaine 12.5 mgs to Group B were administered by entering intrathecal space with 25 Gauge Quincke-Babcock type spinal needle. Heart rates, systolic, diastolic and mean arterial blood pressures, perpiherical oxygen saturation values of the patients were measured at every five minutes. The time of sensory block to reach T10 level, top dermatome level and lasting time; starting time of motor block, time to reach top dermatome level and lasting times were recorded. Complications in peroperative and postoperative period were recorded. Results: The time of sensory block to reach T10 dermatome in Group B was found shorter. Times of sensory and motor block to reach top dermatomal level in Group A were higher than Group B. The sensory and motor block lasting times were found higher in Group B. Since, hypotension in 6, bradycardia in 2 and vomiting in 2 patients were occured in Group A, hypotension in 4, bradycardia in 3 and vomiting in 2 patients were seen in Group B. Conclusion: Ropivacaine and bupivacaine usage in hip and lower extremity surgery may provide hemodynamic stability, therefore we suggest that ropivacaine and bupivacaine are safe to use in spinal anesthesia for this kind of processes.

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