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:8/23/2017)... Fort Lauderdale, FL (PRWEB) , ... August 23, ... ... staffing firms for traveling medical professionals, recently launched a new website, http://www.cirrusmedicalstaffing.com ... interface, built to respond to the needs of healthcare professionals who are traveling ...
(Date:8/23/2017)... Tennessee (PRWEB) , ... August 23, 2017 , ... ... its team to support long-term strategic growth plans, announcing the hiring of Kevin ... A certified technology consultant and seasoned sales manager, Keelan will be working with ...
(Date:8/22/2017)... ... August 22, 2017 , ... The Women’s Choice Award, a growing ... Relief with the 2017 Women’s Choice Award. The identification by women of an ... of 4 migraine sufferers are women. In a survey taken by the Women’s Choice ...
(Date:8/22/2017)... ... August 22, 2017 , ... ... solutions, announced recently the availability of a new professional fee E/M leveling calculator ... their service to the healthcare industry. E/M coding is complex which supports the ...
(Date:8/22/2017)... ... August 22, 2017 , ... ... of child abuse and neglect, and the struggles faced while hoping for a ... creation of published author, Judy Von Bernewitz, who spent 13 years working with ...
Breaking Medicine News(10 mins):
(Date:8/4/2017)... Aug. 3, 2017  Agragen, LLC, a ... in the biopharmaceutical, nutraceutical, and aquacultural feed sectors, ... its lead drug candidates, AGR131.  This drug is ... from the blood of patients suffering from inflammatory ... bowel disease. ...
(Date:8/2/2017)... 2, 2017  Life Flight Network and PeaceHealth Oregon Network ... patient care and operational efficiency for patients at hospitals in ... Cottage Grove , and Florence, ... and Life Flight Network work collaboratively to move patients who ... when a time sensitive emergency exists. ...
(Date:7/31/2017)... , July 31, 2017 Three Tru-D SmartUVC ... South Korea . Tru-D, short for "Total Room Ultraviolet ... operating rooms after an environmental services (ES) professional cleans the area with ... ... "Although the BAACH ...
Breaking Medicine Technology:
Cached News: