O.T. Kushimo

Antiemetic prophylaxis with promethazine or ondansetron in major gynaecological surgery

ABSTRACT Background: Postoperative nausea and vomiting remain a significant cause of morbidity among patients undergoing general anaesthesia. The optimal strategy for prevention, however, remains controversial. This study evaluated the efficacy of ondansetron 8 mg compared with promethazine 25 mg or placebo for the prevention of nausea and vomiting in patients undergoing elective major gynaecological surgery. Methods: Seventy-five patients received intravenous injection of the study medication (ondansetron-25, promethazine-25 or placebo-25) immediately before the induction of anaesthesia. Nausea and vomiting were assessed over a 24-hour postoperative period. Results: Nausea occurred in 20%, 40% and 72% of the promethazine, ondansetron and placebo groups respectively (p = 0.001). The overall incidence of vomiting was 12%, 16%, and 60% (p = 0.000) for promethazine, ondansetron and the placebo respectively. Postoperative drowsiness was prominent in the promethazine group. There was no significant difference in effectiveness between promethazine and ondansetron. Conclusions: Promethazine 25 mg was significantly more effective than ondansetron 8 mg in the prevention of postoperative nausea and vomiting. Promethazine is inexpensive and the cost of drugs is of importance in developing African countries. Drowsiness was a significant side-effect with promethazine, and this will be a disadvantage in ambulatory surgery.

Human Immunodeficiency Virus Needlestick Injury: Knowledge and Management in a Population of Nigerian Anaesthetists

ABSTRACT Objective: To determine the knowledge of HIV transmission and of post exposure management, following an HIV- infected needlestick injury, in a population of Nigerian anaesthetists. Subjects and Method: A cross-sectional, prospective assessment was conducted voluntarily in anaesthetists at an annual healthcare providers forum, and at a major general hospital, using a structured questionnaire. Results: 63 Anaesthetists participated in the study. One anaesthetist knew the percentage of infected HIV needlestick injury that would result in HIV infection. ALL the high risk body fluids were correctly identified by 7 (11.1%) respondents. Twelve (19.0%) knew the correct immediate management when injured by a HIV-infected needlestick. Fifty eight (92.1%) were aware of post exposure prophylaxis (PEP), 25 (39.7%) had a PEP policy in their institutions and 57 (90%) knew when to commence PEP. Conclusion: Nigerian anaesthetists, though acutely aware of post exposure prophylaxis, are not aware of the fluids at risk and have not demonstrated adequate knowledge in the management, when injured by a HIV-infected needlestick.

The outcome of anaesthesia related cardiac arrest in a Sub-Saharan tertiary hospital

Abstract Background Anaesthesia related cardiac arrest is undesirable, and different attempts have been made to reduce the mortality associated with it through continuous specialist training, and provision of state of art equipment, combined with rigorous research. Patients and methods We determined the outcome of all cardiac arrests that occurred within 24 h of a surgical procedure and anaesthesia from January 2013 to May 2014. Results There were nine anaesthesia related cardiac arrest in 4229 cases, (incidence of 21.28 per 10,000), with a mortality of 7/4229; (16.55 per 10,000). There were 60 perioperative cardiac arrests (incidence of 141.88 per 10,000), with a mortality of 55/4229 (130.05 per 10,000). There was return of spontaneous circulation in 34 (56.67%) cases, among them only 7 (20.59%) survived to hospital discharge. The independent determinant of perioperative mortality was the duration of cardiac arrest ⩾ 5 min (RR 10.50, 95% CI 2.721–40.519, p < 0.001), cardiac arrest in the absence of a witness (RR 9.56, 95% CI 2.486–36.752, p < 0.001), nonstandard time of cardiac arrest (RR 3.2, 95% CI 1.792–5.714, p < 0.001), ASA physical status ⩾ III (RR 2.017, 95% CI 1.190–3.417, p = 0.017), and emergency surger (RR 2.17, 95% CI 1.151–4.049, p = 0.011). Conclusion Anaesthesia related cardiac arrest and mortality were linked to cardiovascular depression from halothane overdose in our institution. The burden can be reduced by improving on establishing standard monitoring in the perioperative period, and a team approach to patients care.

The Effect of Pre-Incision Field Block versus Post-Incision Inguinal Wound Infiltration on Postoperative Pain after Paediatric Herniotomy

BACKGROUND: The Ilioinguinal/iliohypogastric nerve block has been shown to significantly decrease opioid analgesic requirements and side effects after inguinal herniotomy. We compared the effect of pre-incisional field block with 0.25% bupivacaine and post-incisional wound infiltration with 0.25% bupivacaine for postoperative pain control after inguinal herniotomy. PATIENTS & METHODS: This was a randomized controlled double blind study in 62 ASA I and II children aged 1-7 years scheduled for inguinal herniotomy. They were assigned to receive either pre-incision field block (group I) or post-incision wound infiltration at the time of wound closure (group II). The pain score was assessed in the recovery room using mCHEOPS score and VAS or FLACC score at home by the parents for 24 hours. RESULTS: The mean pain scores during the 2 hour stay in the recovery room, at 12 and 18 hours at home were similar in both groups, p > 0.05. However, the mean pain scores were significantly lower at 6 hours at home in group I (1.22 ± 0.57) than in group II (1.58 ±0.90), p <0.001, but significantly higher at 24 hours at home in group I (3.29 ± 0.46) than in group II (2.32 ± 0.24), p = 0.040. There was no difference in mean paracetamol requirement, and in the number of patients who required paracetamol for pain relief at home in both groups, p > 0.05. CONCLUSION: We have demonstrated that both pre-incisional ilioinguinal/iliohypogastric field block and post incisional wound infiltration provided adequate postoperative analgesia for 24 hours after inguinal herniotomy.

Emergency Caesarean section in a patient with known sickle-cell disease and myasthenia gravis

Abstract A 33-year-old patient with known sickle-cell disease (SS) booked for antenatal care at the Lagos University Teaching Hospital at six weeks gestational age. She had been diagnosed with myasthenia gravis three years prior to presentation and placed on oral anticholinesterase and steroid therapy, but her compliance was poor. She had had an operative delivery six years previously, under a general anaesthesia relaxant technique. It had been complicated by delayed emergence and residual muscle weakness, necessitating postoperative ICU admission for mechanical ventilation. In the index pregnancy, she had an emergency Caesarean section with bilateral tubal ligation under a combined spinal-epidural technique. A level of sensory block of T6 was achieved with 2.8 mL of 0.5% hyperbaric bupivacaine administered intrathecally. Towards the end of surgery, analgesia was supplemented through the epidural catheter with injection of 25 μg fentanyl in 6 mL of 0.25% plain bupivacaine. Supplemental oxygen was administered via a Hudson mask at 4 L/min. A live male baby with Apgar scores of 9 and 10 at one and five minutes, respectively, was delivered. The intraoperative period was uneventful. Postoperatively, she was managed in the high care unit. Postoperative analgesia was achieved via the epidural catheter with 6 mL of 0.125% bupivacaine and 2 μg/mL fentanyl four hourly for 48 hours. Subsequent recovery was uneventful. She was discharged to the postnatal ward on the fourth day post- surgery, and home with her baby 10 days later.

Gunshot facial injury: a multi-disciplinary management

ABSTRACT Gunshot facial injury may be frightening and overwhelming. We present a case report of a male employee who was shot in the face during an armed robbery attack on a bank. He sustained severe injuries to the eyes, as well as fractures involving the orbital, maxillary and mandibular bones, with impending airway compromise. He bled profusely and was resuscitated and stabilized. Anaesthesia management included initial local anaesthesia for emergency tracheostomy and then a general anaesthetic for emergency ophthalmology and maxillofacial surgeries in a one-staged operation all on the same day lasting six hours.