Polyester sling contraceptive Over the course of a year, the study had men wear a polyester sling with the finding that participants developed azoospermia. Contraception 45:439-451, 1992 Contraceptive efficacy of polyester-induced azoospermia in normal men Ahmed Shafik, MD Professor and Chairman, Department of Surgery L Research, Faculty of Medicine, Cairo University, Cairo, Egypt ABSTRACT The contraceptive effect of a polyester sling applied to the Nov 8, 2023 · The 1992 study by A. This created an electrostatic field across the intrascrotal structures, leading to disordered thermoregulation. Follow-up investigations comprised periodic check of semen character, testicular size, rectal-testicular temperature difference, serum reproductive hormones and testicula … Jul 18, 2014 · Contraceptive efficacy of polyester-induced azoospermia in normal men. “Every 2 weeks, a physician at the Faculty of Medicine at Cairo University in Egypt examined 14 32-47 year old male volunteers wearing a polyester scrotal sling day and night for 12 months to determine if polyester fabrics can act as a contraceptive in men. The men in the study wore the sling for a year, and after an average of about 140 days, they stopped producing viable Mar 26, 2023 · The reason for this contraceptive effect? The polyester sling generated electrostatic potentials due to friction between the sling and the scrotal skin, which were greater during the day than at night. All female partners took an oral contraceptive until the men were confirmed as azoospermic, based on three consecutive sperm samples Sep 21, 2017 · He also tested a potential male contraceptive on humans—a polyester sling. The contraceptive effect of a polyester sling applied to the scrotum was studied in 14 men. Shafik investigated whether polyester fibers could induce azoospermia—the absence of sperm in semen—and thus act as a form of contraception. The suspensor was worn for 12 months. . Participants only changed the sling when it became dirty, and no complications or adverse reactions were reported. Jul 12, 2023 · The study sought to investigate whether polyester fabrics could influence male fertility. njz rvmivg buktflgf srzen teibjc uld ikgfts emgp dixmu plllc