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:
TAG: Frozen fresh sperm both effective for vitro fertilization

(Date:4/17/2014)... April 17, 2014 By discovering a new mechanism ... a stroke, researchers at UC Irvine and the Salk ... may limit or prevent stroke-induced brain damage. , A ... cause of death and primary reason for disability in ... a stroke and lets blood-borne material into the brain, ...
(Date:4/17/2014)... EcoHealth Alliance, a nonprofit organization that focuses on conservation ... today examining the current state of knowledge of the ... improved global surveillance strategies to combat the emergence of ... in West Africa that has claimed the lives of ... According to the World Health Organization (WHO), the ...
(Date:4/17/2014)... has the potential to ward off depression among retirees, ... published online in The Journals of Gerontology, ... In the article " Internet Use and Depression Among ... Analysis ," the authors report that Internet use reduced ... among their study sample. , Late-life depression affects ...
(Date:4/17/2014)... and their partners have found that their proprietary microbicide ... of multiple sexually transmitted infections (STIs) in both the ... 2 (HSV-2), and human papillomavirus (HPV). The USAID-funded study ... effective against multiple strains of HIV, and has a ... viruses of at least eight hours prior to exposure. ...
(Date:4/17/2014)... N.C. April 17, 2014 Meaningful long-term ... advanced cancer of the abdomen when treated with ... according to a first-of-its-size analysis by physicians at ... Baptist has the largest reported, single-center experience with ... A. Levine, M.D., and analysis of 20 years, ...
Breaking Medicine News(10 mins):Health News:Study IDs new cause of brain bleeding immediately after stroke 2Health News:Re-emergence of Ebola focuses need for global surveillance strategies 2Health News:Re-emergence of Ebola focuses need for global surveillance strategies 3Health News:Internet use may cut retirees' depression 2Health News:Animal study provides first evidence that gel can prevent multiple virus transmission in vagina/rectum 2Health News:20 years of data shows treatment technique improvement for advanced abdominal cancer 2
(Date:1/15/2014)... , Jan. 15, 2014 The Cadence Fitness ... Fitness Center by the Medical Fitness Association, a non-profit ... achieve their full potential. The Cadence Fitness & Health ... western suburbs and second in the Chicagoland area. ...
(Date:1/15/2014)... NEW YORK , Jan. 15, 2014 ... research report is available in its catalogue: ... & Forecast – Worldwide Analysis ... Pump Market Analysis ...
(Date:1/15/2014)... 15, 2014  Valeant Pharmaceuticals International, Inc. (NYSE: ... waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of ... offer by its indirect wholly-owned subsidiary, Sapphire Subsidiary Corp. ... stock of Solta Medical, Inc. (NASDAQ: SLTM ...
Breaking Medicine Technology:Cadence Fitness & Health Center Certified as Medical Fitness Facility 2Cadence Fitness & Health Center Certified as Medical Fitness Facility 3Insulin Pump Market & Forecast - Worldwide Analysis 2Insulin Pump Market & Forecast - Worldwide Analysis 3Insulin Pump Market & Forecast - Worldwide Analysis 4Insulin Pump Market & Forecast - Worldwide Analysis 5Insulin Pump Market & Forecast - Worldwide Analysis 6Insulin Pump Market & Forecast - Worldwide Analysis 7Insulin Pump Market & Forecast - Worldwide Analysis 8Insulin Pump Market & Forecast - Worldwide Analysis 9Insulin Pump Market & Forecast - Worldwide Analysis 10Insulin Pump Market & Forecast - Worldwide Analysis 11Insulin Pump Market & Forecast - Worldwide Analysis 12Insulin Pump Market & Forecast - Worldwide Analysis 13Insulin Pump Market & Forecast - Worldwide Analysis 14Insulin Pump Market & Forecast - Worldwide Analysis 15Insulin Pump Market & Forecast - Worldwide Analysis 16Insulin Pump Market & Forecast - Worldwide Analysis 17Valeant Pharmaceuticals Announces Receipt Of Antitrust Clearance For Its Previously Announced Acquisition Of Solta Medical, Inc. 2Valeant Pharmaceuticals Announces Receipt Of Antitrust Clearance For Its Previously Announced Acquisition Of Solta Medical, Inc. 3
Cached News: