A Comparative Study between Transcutaneous Electrical Nerve Stimulation and Fentanyl to Relieve Shoulder Pain during Laparoscopic Gynecologic Surgery under Spinal Anesthesia: A Randomized Clinical Trail

Table 1

Patients’ characteristics.

	TENS (n = 40)	Fentanyl (n = 40)
Age, mean (SD) (years)	31.35 (4.89)	31.15 (6.28)
Body mass index, mean (SD) (kg/m^2)	26.23 (4.18)	26.11 (4.37)
Surgery duration, mean (SD) (minutes)	51.62 (11.89)	45.82 (19.78)
Type of operation, no. (%)
Ectopic pregnancy	21 (52.5)	22 (55)
Infertility	7 (17.5)	10 (25)
Ovarian cysts	6 (15)	1 (2.5)
Ovarian torsion	6 (15)	7 (17.5)