Low-dose spinal anaesthesia provides effective labour analgesia and does not limit ambulation

Background: While epidural analgesia for labour pain is standard in high-resource countries, minimal to no analgesia is usually provided in low-resource countries. Intrathecal local anaesthetics provide good pain relief, but the potential impact on ambulation is of concern. Our objective was to determine if a low-dose local anaesthetic combined with an opioid would provide reasonable pain relief, while allowing ambulation in a low-resource setting. Method: This prospective, observational study was conducted at the Tamale Teaching Hospital in Tamale, Ghana. Spinal analgesia was administered to healthy women in labour using a pencil-point 25-G spinal needle at the L3-L4 or L4-L5 interspace, with patients in the sitting position. The intrathecal mixture contained 25 mu g of fentanyl, 2.5 mg of bupivacaine and 0.2 mg of morphine. The patient's ability to ambulate following the administration of a low-dose spinal injection was the primary outcome measured. Pain ratings, blood pressure, nausea, vomiting, pruritus, headaches and foetal bradycardia were also recorded. Results: Three hundred and thirty-two parturients consented to participate. Following spinal injection, 328 women (98.8%) experienced mild to no pain, and 4 (1.2%) moderate pain. The administration of spinal analgesia had no effect on ambulation in 291 (87.7%) patients, and a mild effect in 41 (12.3%) patients. Intrathecal analgesia did not severely limit ambulation in any of the patients. Conclusion: Low-dose intrathecal analgesia can provide effective analgesia for labouring patients in low-resource settings without limiting ambulation.