The Effect of Rectus Muscle Re-approximation at Cesarean Delivery on Postoperative Pain

Suturing of Rectus Muscle at Cesarean Section

Cesarean section, Rectus Muscle, Rectus Muscle Re-approximation, Postoperative Pain

The Effect of Rectus Muscle Re-approximation on Postoperative Pain Among Primigravida Singleton Pregnancies Who Underwent Elective Cesarean Section: A Randomized Prospective Trial. Cesarean section is the most common surgical procedure performed in women in all around the world. Cesarean delivery rate has increased dramatically worldwide but there is still debate about the optimum operative technique of cesarean section. Rectus muscle reapproximation, or suturing of the rectus muscles, is performed by many obstetricians in several countries, presumably to reduce the risk of persistent rectus muscle diastasis. However, there was a few studies about the short and long term effects of rectus muscle reapproximation in the literature. On this account, the investigators aimed to design a randomized prospective trial about the effect of rectus muscle re-approximation on postoperative pain among primigravida singleton pregnancies who underwent elective cesarean section.

This study is a prospective, randomized controlled trial conducted at Balikesir University Medical Faculty Department of Obstetrics and Gynecology at Balikesir, Turkey between January 2021 and March 2022. The singleton pregnant women undergoing scheduled primary cesarean section who are not in labor and consented to the trial are randomly assigned to receive rectus muscle reapproximation versus no reapproximation. Gestational age is detected by the first day of last menstrual period and confirmed by first trimester ultrasonography measurements. The pregnant women who recruited this study would have no maternal accompanying conditions, such as hypertensive disorders of pregnancy, preterm rupture of membranes, Type 1 diabetes mellitus, gestational diabetes mellitus, reno-vascular disorders, sickle-cell anemia, collagen-vascular diseases, hereditary or acquired thrombophilia, congenital abnormalities and multiple gestations. Randomization would be conducted through sequentially numbered opaque envelopes generate by a study nurse in blocks through a random numbers table, in a 1:1 ratio. Surgical techniques at cesarean section are standardized within the study and included closure of the parietal peritoneum and one-layer uterine closure. For women randomized to rectus muscle reapproximation, surgeons will use 2.0 Vicryl (Ethicon) for continuous suturing to reapproximate the rectus muscles. All surgeries were performed by an attending physician and a resident physician.Intraoperative analgesia was standardized to spinal anesthesia. Postoperative pain management is standardized by using our clinic's postoperative cesarean section protocol.Patients with pain unresponsive to the aforementioned treatment could receive opioids as necessary. Visual analog scale (VAS)scores are assessed through inperson interview in the hospital by a member of the study team at 24 and 48 hours after cesarean section.Total opioid use, total milligrams of nonsteroid antiinflammatory drugs (NSAIDs) and acetaminophen use are also tracked and summed. The primary outcome will be the changes in total NSAID, opioid and acetaminophen use of the patients between the groups (rectus reapproximation and no rectus reapproximation groups). The investigators will also analyze the VAS scores of the patients 24 and 48 hours after surgery between the groups.

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Turkey (Türkiye)