Lying Still Raises Artificial Insemination Success

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One expert said it wasn't yet clear whether this was the best way to maximize pregnancy odds.

First of all, it's not known what common practice is currently in clinics: lying down for 5, 10, 15 minutes or longer, said Dr. Peter McGovern, director of the division of reproductive endocrinology and infertility at Hackensack University Medical Center in New Jersey.

"These authors didn't test other times," he said. "And studies in the past found that sperm deposited in the vagina could be found at the end of the fallopian tubes within 5 minutes. I think probably any time period over 5 minutes would probably give you the same difference. It's probably a good idea to have people lay flat for some period of time as opposed to just leaping up."

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Another expert agreed.

The Dutch study's conclusions are "plausible," said Dr. Roger Lobo, president-elect of the American Society of Reproductive Medicine and professor of obstetrics and gynecology at Columbia University, although the 15-minute time span used in the study does appear "artificial."

"Five minutes is probably sufficient," he said. "Sperm travels very, very rapidly. If you get up within the minute there may be some leakage."

"In our practice I've never heard of anyone who gets up immediately," Lobo said. "The standard is 10 minutes. Women who are asked to get up immediately may have a stress response." Volume of sperm also plays a role with more sperm upping the odds of pregnancy, he added.

More information

There's more on infertility at the American Society of Reproductive Medicine.

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