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Background hip replacement surgery is common among elderly patients. These patients have increased risk for perioperative mortality and morbidity due to additional comorbidities, such as cardiac, endocrine, renal, cerebral and respiratory diseases. Aim of the Work to compare between continuous spinal anesthesia and combined spinal epidural anesthesia in patients scheduled for elective major hip surgeries as regards their effectiveness and possible complications during operation. Patients and Methods after obtaining the approval of the ethical committee of faculty of medicine, Ain-Shams University, and patients’ written informed consents, this prospective randomized clinical trial study was conducted at Ain Shams University Hospitals at the orthopedics operating theatre. Seventy two patients aged older than 30 years, of both sexes and American Society of Anesthesiologists (ASA) class I, II, scheduled for elective major hip surgeries like total hip replacement or hemi arthroplasty were included in the study. All Patients were assigned randomly by using a computer generated program with closed envelops to one of the two equal groups:CSAgroup(36)patient and CSEgroup(36)patient. Results there was no statistically significant differences between the CSA and CSE groups as regards demographic data; Age, Sex or BMI. Baseline HR was similar in both groups. The heart rate was significantly higher in the CSE group at 5 min and 15 min when compared to CSA group. The mean blood pressure was significantly lower in group CSE at 5min anf 15 min when compared to CSA group.The total dose of bupivacaine 0.5% mg collectively given was much lower in the CSA group than the CSE group. The onset of sensory block (time between the end of injection and the time to reach T10sesnsory level) and degree of motor block between two groups showed no statistically significant difference but the level of sensory block was significantly higher in CSE group than CSA group.there was no significant difference as regard PDPH, Post operative nausea and vomiting, Bradycardia but there was significant difference as regard incidence of hypotension being higher in CSE group than CSA group. The time of first analgesic request showed no significant difference between the two groups Conclusion both continuous spinal anesthesia and compined spinal epidural anesthesia are safe anesthetic techniques for lower limb surgeries. CSA offers possibilities of more hemodynamic stability with smaller doses of local anesthetics than CSE with rapid onset of sensory block and good extendede post operative analgesia.

Continuous Spinal Anesthesia versus Combined Spinal Epidural Anesthesia for Major Orthopedic Hip Surgeries