Impact of obstetric physiotherapy and transcutaneous electrical nerve stimulation (TENS) on pain management and gastrointestinal function following cesarean birth: A randomized controlled trial.

Introduction: The study aimed to compare the impact of the physiotherapeutic method combined with TENS and physiotherapy alone on post-cesarean pain levels and the time required for intestinal peristalsis recovery. The study was conducted at the Specialist Hospital in Kraków, from January to March 2020.

Methods: The study was designed as a parallel randomized controlled trial (RCT). Participants were randomly assigned to one of three groups: TENS (n=52), nTENS (n=50) and control group (n=34), based on block randomization of 6. The allocation sequence was provided using a computer-generated random list. The participants were 136 postpartum primiparous women after cesarean birth, aged ≥18 years, having a healthy newborn, with no contradictions to TENS. The TENS group received a physiotherapeutic procedure involving a 20-minute exercise program plus a 40-minute session of TENS. The nTENS group received physiotherapeutic procedure alone, and the control group was under the routine care of midwives. The pain was assessed using the Numerical Rating Scale (NRS) at 6, 7, 12 and 24 hours after cesarean birth and twice during verticalization.

Results: TENS and nTENS groups had decreased pain intensity immediately after the intervention compared to the control group (p=0.002, p=0.027, respectively). During the first stage of the verticalization, the smallest increase in pain was observed in the TENS (p=0.044 compared to nTENS, p=0.000 compared to the control group). Within the increase in the pain score, the intestinal peristalsis recovery time was longer. In both groups undergoing physical therapy, a shortened recovery time of intestinal peristalsis was demonstrated (p=0.000).

Conclusions: The proposed physiotherapy program, combined with TENS and instruction, proved effective in relieving post-cesarean pain and accelerating the time to first defecation and should be considered part of the standard patient management program in maternity units.