HOME >> MEDICINE >> NEWS
Frozen, fresh sperm both effective for in vitro fertilization

ROCHESTER, Minn. -- A new Mayo Clinic study shows that couples using in vitro fertilization have the same likelihood of successful pregnancy whether the sperm used is frozen or fresh. Researchers presented the results today at the annual scientific meeting of the American Urological Association in San Francisco.

"Without these data, we were concerned that frozen sperm might reduce the birth rate," says Alan Thornhill, Ph.D., senior author of the study and director of the Mayo Clinic in vitro fertilization laboratory. "Now, we believe that concern is unwarranted."

In vitro fertilization starts with a woman taking fertility drugs to stimulate her ovaries to produce more eggs than usual. When the eggs are mature, they are retrieved from the ovary and introduced to washed sperm to allow fertilization. The availability of sperm on the day eggs are retrieved is critical to success.

Two to five days after retrieval, the embryos (the fertilized eggs) are transferred to the uterus.

How the study was done

Researchers reviewed data collected at Mayo Clinic from 1993 to 2003. Fresh sperm were used in 1,580 cycles and frozen sperm in 309 cycles. At Mayo Clinic, sperm samples are frozen as part of the in vitro process in the event that a fresh sample is not available on the required day.

Researchers compared the effectiveness of fresh vs. frozen sperm by calculating the cumulative live birth rate -- that is at least one baby born from a single egg retrieval from the mother. Embryos from a single egg retrieval may be transferred over one or more transfer cycles.

For cycles using fresh sperm, the cumulative live birth rate was 51.6 percent. For frozen, it was 53.1 percent.

Dr. Thornhill says Mayo Clinic doctors still prefer to use fresh sperm when possible because the number of sperm and their movement are reduced by freezing and thawing.

If fresh sperm is not available -- because of the man's illness,
'"/>


12-May-2004


Page: 1 2

Related medicine news :

1. Reconstituted blood is better for infants heart surgery than fresh blood
2. College freshmen more politically liberal than in the past, UCLA survey reveals
3. Study identifies genetic fingerprint of healthy sperm
4. USC researchers find ozone lowers sperm counts
5. Strategy effective against drug resistant tuberculosis
6. Study shows patch therapy may be as effective as oral medications
7. Chronic pain treatments more effective when taken together, new study shows
8. Geodon effective in psychiatric emergencies; Sharply reduces time in restraints
9. Costs of antidepressants could have funded effective alternatives
10. New ways to design safer & more effective topical (transdermal) drug delivery announced in the PNAS
11. Government wasting your taxpayer money on ineffective drug cure

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:6/26/2016)... ... June 26, 2016 , ... Many women are confused ... endometriosis. These women need a treatment plan to not only alleviate symptoms and ... help for preservation of fertility and ultimately achieving a pregnancy. The specialists at ...
(Date:6/25/2016)... ... 2016 , ... "With 30 hand-drawn hand gesture animations, FCPX users can easily ... of Pixel Film Studios. , ProHand Cartoon’s package transforms over 1,300 hand-drawn pictures ... . Simply select a ProHand generator and drag it above media or text in ...
(Date:6/25/2016)... ... June 25, 2016 , ... On Friday, June 10, Van Mitchell, Secretary of ... award to iHire in recognition of their exemplary accomplishments in worksite health promotion. , ... Workplace Health & Wellness Symposium at the BWI Marriott in Linthicum Heights. iHire was ...
(Date:6/24/2016)... ... , ... June 19, 2016 is World Sickle Cell Observance Day. In an ... of holistic treatments, Serenity Recovery Center of Marne, Michigan, has issued a ... Cell Disease (SCD) is a disorder of the red blood cells, which can cause ...
(Date:6/24/2016)... CA (PRWEB) , ... June 24, 2016 , ... ... is now offering micro-osteoperforation for accelerated orthodontic treatment. Dr. Cheng has extensive experience ... Damon brackets , AcceleDent, and accelerated osteogenic orthodontics. , Micro-osteoperforation is ...
Breaking Medicine News(10 mins):
(Date:6/23/2016)... , June 23, 2016 Research ... Pharma News Issue 52" report to their offering. ... in influenza treatment creates a favourable commercial environment for MedImmune ... growing patient base that will serve to drive considerable growth ... vaccine would serve to cap sales considerably, but development is ...
(Date:6/23/2016)... INDIANAPOLIS , June 23, 2016 If ... Leaders Scholarship is any indication, the future is in ... at www.diabetesscholars.org by the Diabetes Scholars Foundation ... the way of academic and community service excellence. ... since 2012, and continues to advocate for people with ...
(Date:6/23/2016)... June 23, 2016  Guerbet announced today that it ... Supplier Horizon Award . One of 12 ... recognized for its support of Premier members through exceptional ... excellence, and commitment to lower costs. ... recognition of our outstanding customer service from Premier," says ...
Breaking Medicine Technology:
Cached News: