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Old 08-11-2012, 07:08 AM   #8
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Join Date: Jun 2012
Location: Alabama
Posts: 302
Re: Vasectomy (permanent?)

according to the patient information leaflet on paragard's website:
How does ParaGard® work?
Ideas about how ParaGard® works include preventing sperm from reaching the egg, preventing sperm from fertilizing the egg, and preventing the egg from attaching (implanting) in the uterus. ParaGard® does not stop your ovaries from making an egg (ovulating) each month.
The fact that the ectopic pregnancy rate is so much higher in women who use IUDs strongly suggests to me that a big part of the way they work is by preventing implanting in the uterus. If they primarily worked by stopping fertilization, then you would expect to see a similar ectopic rate as women on no birth control.
Creighton Model FertilityCare Teacher
Helping others to appreciate their fertility whether trying to avoid or conceive
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