مقایسه تاثیر تحریک الکتریکی پوست با ترکیب دارویی هیوسین-پرومتازین بر شدت درد مرحله اول زایمان

Background & Aims: Several physical and psychological factors affect the severity and duration of labor pain. Factors such as maternal age, parity, cervical position at the onset of labor, and the relationship between the size and position of the embryo with the size of the canal of delivery are important factors in the severity of labor pain. Effective psychosocial factors that may affect physical factors include fear, anxiety, cultural beliefs and companionship in the delivery room. The severity of pain varies from one person to another, and according to published reports, 15% have mild pain, 35% have moderate pain, 30% have severe pain, and 20% have reported uncommitted pain. Considering the painful nature of labor, the present study was conducted to compare the effect of TENS with hyoscine-promethazine on reducing the frequency of labor pain in the active phase of labor. Materials & Methods: By a clinical ergometric method, this research was done on 84 eligible pregnant women (42 in TENS group; 42 in hyoscine- promethazine group) referring to Shahid Chamran Hospital of Kangavar city. When active phase of labor began, 20 mg of hyoscine and 25 mg of promethazine were simultaneously administered to the medication group intramuscularly. For TENS group, TENS device was used, with a pair of upper electrodes being between L1-T10 and a pair of lower ones between S2-S4 on both sides of spinal column. Pain scores were studied under per- and post- intervention conditions for 2 groups. Collected data was analyzed by using SPSS software, chi- square test and independent t-test at p<0.05. Results: Two groups were tested for variables of age, body mass index (BMI), pregnancy age, dilatation at the time of admission, exhibiting no significant differences (p>0.05). The means of contraction duration (p>0.05) and of contraction number (p>0.05) did not differ significantly for 2 groups. But results from comparison of the mean pain scares of 2 groups of studied pregnant women showed that it was significantly lower for TENS group throughout active labor phase at different dilatations than for the other group (hyoscine- promethazine) (p<0.05). Conclusion: TENS relieves labor pain; therefore, it is recommended to use it for this purpose.