Nausea and vomiting after spinal anesthesia with two drugs combinations of bupivacaine- fentanyl and bupivacaine-sufentanil during cesarean section

Introduction: Spinal anesthesia is the most common method of analgesia for elective cesarean section. Nausea and vomiting in the patients can cause problem during the surgery. This study was performed with aim to compare the frequency of nausea and vomiting following spinal anesthesia using the drug combination of Bupivacain-Fentanyl and Bupivacain-Sufentanil in cesarean surgery. Methods: This double-blind clinical trial study was performed in 2013 on 60 patients with term pregnancies who were candidate for cesarean under spinal anesthesia. Group F received 25 µg fentanyl while group S received 2.5 μg Sufentanil with 12.5mg intratechal Bupivacaine. The main complications were nausea and vomiting during and in the hours 1, 2 ,6, 12 and 24 after the surgery. Other investigated complications included hypotension, urinary retention and time of sensory block regression to the level of T8. Data were analyzed by SPSS software (version.16), and Chi-square test and Student t-test, Logistic regression and repeated data logistic. p < 0.05 was considered statistically significant. Results: The two groups were not significantly different in terms of rate of nausea (P=0.395) and vomiting during (P=0.5) and in hours 1, 2, 6, 12 and 24 after the surgery, hypotension (P=0.589), heart rate changes (P=0.105), urinary retention, the time of sensory block to T8 (P=0.556) and the time of returning motor block (P=0.787). Conclusion: Using two medications of Fentanyl and Sufentanil in combination with hyperbaric Bupivacain had no impact on the frequency and prevalence of nausea and vomiting.