Erector Spinae Plane Block: Effective Alternative to Intrathecal Morphine in Gyn-Onc Recovery, Study
A recent randomized controlled trial published in the Indian Journal of Gynecologic Oncology in April 2026 demonstrates that the erector spinae plane block offers a high-satisfaction, low-complication alternative to intrathecal morphine for gynecologic oncology surgeries, providing comparable recovery quality despite a slightly shorter analgesic duration.
Gynaecological malignancies constitute a major global health burden, frequently requiring extensive hysterectomy via midline laparotomy; however, standard treatments like intrathecal morphine (ITM) carry significant risks of adverse effects. To address this clinical gap, Aarushi Aggarwal and colleagues from the Department of Anaesthesiology at a prominent institution aimed to determine if the erector spinae plane block (ESPB) could serve as a safer alternative within multimodal analgesia strategies.
Therefore, the prospective, randomized controlled trial enrolled 38 adult patients scheduled for elective laparotomy for gynecological malignancies at a tertiary care setting, comparing the efficacy of 200 µg of ITM against bilateral ESPB using 20 ml of 0.25% bupivacaine. Researchers focused on the duration of analgesia as the primary endpoint while also tracking secondary measures such as Numerical Rating Scale (NRS) pain scores over 24 hours, Quality of Recovery-15 (QoR-15) scores, rescue analgesic requirements, and patient satisfaction levels.
Key Clinical Findings of the Study Includes:
• Analgesic Duration: The study found ITM provided a mean of 18.8 hours of relief compared to 13.2 hours for ESPB, a difference that did not reach statistical significance.
• Early Pain Control: NRS scores were significantly lower in the morphine group during the initial 2 to 6 hours post-surgery, though scores became comparable between both groups after this window.
• Rescue Requirements: Patients in the ESPB cohort required significantly higher amounts of rescue tramadol to manage breakthrough pain compared to those receiving spinal morphine.
• Adverse Event Profile: Morphine was associated with a much higher frequency of complications, including postoperative nausea and vomiting, pruritus, constipation, and oxygen desaturation.
• Patient Experience: Despite the need for more rescue medication, overall patient satisfaction was significantly higher in the ESPB group, likely due to the reduction in opioid-related side effects.
The results suggest that ESPB provides a comparable duration of analgesia and quality of recovery to ITM, with recovery scores at 24 hours remaining similar (p = 0.836). While ITM offers more robust pain relief in the immediate postoperative hours, its heavy adverse event profile ultimately limits its overall recovery benefits for the patient.
These findings imply that clinicians should consider the erector spinae plane block as a safe and well-tolerated component of multimodal analgesia to improve the surgical experience for women undergoing oncology procedures.
The primary limitation of this research was the relatively small sample size, indicating that larger multicenter studies may be required to further refine these analgesic techniques. Future research could focus on optimizing the concentration of local anesthetics used in the block to further extend the duration of relief without increasing risks.
Reference
Aggarwal, A., Singh, R., Bhalotra, A. R., Kerai, S., & Singh, S. (2026). Comparison of erector spinae plane block with intra-thecal morphine for post-operative analgesia in patients undergoing surgery for gynaecological malignancies: a randomised controlled trial. Indian Journal of Gynecologic Oncology, 24(60).
