eating while pregnant

  • Subscribe to our RSS feed.
  • Twitter
  • StumbleUpon
  • Reddit
  • Facebook
  • Digg

mercredi 6 juillet 2011

Question 53: What is ICSI, and how does it differ from IVF?

Posted on 13:34 by Unknown
In medical school at Duke I took a class in reproductive physiology taught by Dr. Patricia Saling. She was very engaging lecturer and the class was very interesting. During the class we had to memorize the sequence of events that included the fusing of the egg and sperm membranes, the release of the enzymes in the sperm acrosome and a bunch of other steps that I no longer remember. The possibility that you could get a baby from ramming a sperm into the middle of the egg with a micro-injector was just laughable....I would have flunked the class if I suggested it! So when the Belgium group reported on their experience with ICSI at the 1993 ASRM meeting in Boston no one could really believe it....seemed nutty. Yet here we are nearly 20 years later and ICSI seems totally banal! Hard to believe....

More on ICSI in the coming posts but here is today's Question of the Day from 100 Questions and Answers about Infertility, 2nd Edition.

53. What is ICSI, and how does it differ from IVF?

In routine IVF, eggs are placed in a laboratory dish in culture media together with prepared sperm. The eggs and sperm are allowed to spontaneously fertilize overnight. The fertilized eggs then develop and in the incubator until the embryo transfer procedure, which is usually performed 3 to 5 days after the egg retrieval.

Intracytoplasmic sperm injection (ICSI) differs from IVF in that each egg is individually injected with a single sperm using a tiny needle under microscopic guidance (Figure 4). The resulting embryo is then cultured similarly to an embryo produced in a non-ICSI IVF treatment.

ICSI was initially introduced by the IVF team working at the Brussels Free University in Belgium. At that time, assisted fertilization was being attempted through the insertion of the sperm under the eggshell (zona pellucida). The Belgian group took the extra step of injecting the sperm not only under the eggshell but actually into the middle of the egg itself. The first ICSI pregnancies were reported in 1992. Since then, tens of thousands of children have been born as a result of this unique procedure.

Both ICSI and non-ICSI IVF have similar pregnancy rates and outcomes. The embryos produced by either method should not be considered to be superior to those created with the other. ICSI is simply a method to ensure that the egg is fertilized. ICSI is a safe and proven IVF method that does not increase the likelihood that the child conceived in this way will have a birth defect.
Envoyer par e-mailBlogThis!Partager sur XPartager sur Facebook
Posted in | No comments
Article plus récent Article plus ancien Accueil

0 commentaires:

Enregistrer un commentaire

Inscription à : Publier les commentaires (Atom)

Popular Posts

  • Managing DOR at Dominion Fertility
    Here in Washington DC we love acronyms. The entire government is one big acronym....DHS, HHS, DOJ, IRS, etc, etc. In medicine we are similar...
  • HSG vs HSC vs H2O sono...What is the difference?
    Medical terminology can really give patients fits and no where is this more apparent than in the distinctions between hysterosalpingogram (H...
  • Facebook
    Well I guess I have now officially joined Web 2.0 with my own Dominion Fertility Facebook page. Although I am slightly worried that Faceboo...
  • And the winner is....Aauuuuugggghhh.....
    Well, since the NHL season just ended 5 minutes ago with a crushing defeat for my hometown Boston Bruins I guess that winter is now official...
  • IVF Stimulation Protocols...cooking eggs with DrG
    Many of the questions that I answer on the INCIID bulletin board revolve around issues of stimulation. High responders, low responders, unus...
  • Thanks to Those Who Serve - Happy Veteran's Day
    I want to offer a heartfelt thanks to the brave men and women who serve or have served in our armed forces. My late father actually managed ...
  • Ectopic Pregnancy After IVF
    My brother Mike is a real doctor. I mean it. He is a general surgeon in a small town in North Carolina and has not had a full night’s sleep ...
  • Question 18. How will my reproductive endocrinologist determine a plan of therapy?
    Here in Washington we are surrounded by planners. People are available to plan your party. People are available to plan your finances. Peopl...
  • Question 37. What is the difference (if any) between intrauterine insemination and artificial insemination?
    What's in a name? Sometimes not much I guess and certainly we throw around medical jargon quite freely in our practice sometimes forgett...
  • Tough Transfers
    Sometimes you just want to pack it in and head for the islands... There is nothing quite as stressful as a tricky embryo transfer. Here you ...

Blog Archive

  • ►  2014 (10)
    • ►  juillet (1)
    • ►  juin (1)
    • ►  mai (1)
    • ►  avril (1)
    • ►  mars (1)
    • ►  février (2)
    • ►  janvier (3)
  • ►  2013 (14)
    • ►  décembre (1)
    • ►  novembre (1)
    • ►  octobre (1)
    • ►  septembre (1)
    • ►  août (1)
    • ►  juillet (1)
    • ►  juin (1)
    • ►  mai (1)
    • ►  avril (1)
    • ►  mars (2)
    • ►  février (1)
    • ►  janvier (2)
  • ►  2012 (30)
    • ►  décembre (2)
    • ►  novembre (1)
    • ►  octobre (3)
    • ►  septembre (1)
    • ►  août (2)
    • ►  juillet (2)
    • ►  juin (3)
    • ►  mai (2)
    • ►  avril (2)
    • ►  mars (3)
    • ►  février (6)
    • ►  janvier (3)
  • ▼  2011 (28)
    • ►  décembre (2)
    • ►  novembre (3)
    • ►  octobre (1)
    • ►  septembre (2)
    • ▼  juillet (3)
      • Question 54. Who needs ICSI, and how can my reprod...
      • To Tweet or not to Tweet..that is the question...
      • Question 53: What is ICSI, and how does it differ ...
    • ►  juin (2)
    • ►  mai (2)
    • ►  avril (3)
    • ►  mars (5)
    • ►  février (3)
    • ►  janvier (2)
  • ►  2010 (52)
    • ►  décembre (2)
    • ►  novembre (6)
    • ►  octobre (5)
    • ►  septembre (4)
    • ►  août (1)
    • ►  juillet (4)
    • ►  juin (3)
    • ►  mai (4)
    • ►  avril (9)
    • ►  mars (13)
    • ►  janvier (1)
  • ►  2009 (22)
    • ►  novembre (1)
    • ►  octobre (2)
    • ►  septembre (2)
    • ►  août (2)
    • ►  juillet (4)
    • ►  mai (2)
    • ►  avril (1)
    • ►  mars (3)
    • ►  février (2)
    • ►  janvier (3)
  • ►  2008 (27)
    • ►  décembre (2)
    • ►  novembre (1)
    • ►  octobre (3)
    • ►  septembre (6)
    • ►  juillet (1)
    • ►  juin (2)
    • ►  mai (3)
    • ►  avril (2)
    • ►  mars (1)
    • ►  février (2)
    • ►  janvier (4)
  • ►  2007 (66)
    • ►  décembre (1)
    • ►  novembre (5)
    • ►  octobre (6)
    • ►  septembre (7)
    • ►  août (11)
    • ►  juillet (13)
    • ►  juin (22)
    • ►  mai (1)
Fourni par Blogger.

Qui êtes-vous ?

Unknown
Afficher mon profil complet