Ask Our Doctors – Archive
Our Medical Directors are outstanding physicians that you will find to be very personable and compassionate, who take care to ensure that you have the most cutting-edge fertility treatments at your disposal. This is your outlet to ask your questions to the doctors.
Hello Dr. Sher: At what point after a positive pregnancy after IVF do you recommend safely discontinuing progesterone?
At about 10 weeks!
Geoff Sher
Hello! I am 7 weeks 4 days pregnant after IVF and was told to stop my progesterone injections immediately…from what I’ve read this seems early…what is your opinion on this? Thank you!
Opinions differ, but I have my patients continue to the 10th week!
Geoff Sher
Hello my wife and I were trying to inquire information on the hcg trigger shot and the proper dosage for 5000iu we are on a waiting list for in-vitro fertilization but that is at least 9 mths away so any information would be greatly appreciated thank you
Ideal egg development sets the scene for optimal egg maturation that occurs 36-42h prior to ovulation or egg retrieval. Without prior optimal egg development (ovogenesis), egg maturation will be dysfunctional and most eggs will be rendered “incompetent” and unable upon fertilization to propagate viable embryos. In IVF, optimal ovogenesis requires the selection and implementation of an individualized approach to controlled ovaria stimulation (COS). Thereupon, at the ideal time, maturational division of the egg’s chromosomes (i.e. meiosis) is “triggered” through the administration of hCG or an agonist such as Lupron, which induces an LH surge. The, dosage and timing of the “trigger shot” profoundly affects the efficiency of meiosis, the potential to yield “competent (euploid) mature (M2) eggs, and as such represents a rate limiting step in the IVF process .
“Triggering meiosis with Urine-derived hCG (Pregnyl/Profasi/Novarel) versus recombinant hCG (Ovidrel): Until quite recently, the standard method used to “trigger” egg maturation was through the administration of 10,000 units of hCGu. Subsequently,, a DNA recombinant form of hCGr (Ovidrel)was introduced and marketed in 250 mcg doses. But clinical experience strongly suggests that 250 mcg of Ovidrel is most likely not equivalent in biological potency to 10,000 units of hCG. It probably only has 50%-70%of the potency of a 10,000U dose of hCGu and as such might not be sufficient to fully promote meiosis, especially in cases where the woman has numerous follicles. For this reason, I firmly believe that when hCGr is selected as the “trigger shot” the dosage should best be doubled to 500 mcg at which dosage it will probably have an equivalent effect on promoting meiosis as would 10,000 units of hCGu. Failure to “trigger” with 10,000U hCGu or 500mcg hCGr, will in my opinion increase the likelihood of disorderly meiosis, “incompetent (aneuploid) eggs” and the risk of follicles not yielding eggs at egg retrieval (“empty follicles”). Having said this, it is my personal opinion that it is unnecessary to supplant hCGu with hCGr since the latter is considerably more expensive and is probably no more biopotent than the latter.
Some clinicians, when faced with a risk of OHSS developing will deliberately elect to reduce the dosage of hCG administered as a trigger in the hope that by doing so the risk of critical OHSS developing will be lowered. It is my opinion, that such an approach is not optimal because a low dose of hCG (e.g., 5000 units, hCGu or 25omcg hCGr) is likely inadequate to optimize the efficiency of meiosis particularly when it comes to cases such as this where there are numerous follicles. It has been suggested that the preferential use of an “agonist (Lupron) trigger” in women at risk of developing severe ovarian hyperstimulation syndrome could potentially reduce the risk of the condition becoming critical and thereby placing the woman at risk of developing life-endangering complications. It is with this in mind that many RE’s prefer to trigger meiosis by way of an “agonist (Lupron) trigger rather than through the use of hCG. The agonist promptly causes the woman’s pituitary gland to expunge a large amount of LH over a short period of time and it is this LH “surge” that triggers meiosis. The problem with using this approach, in my opinion, is that it is hard to predict how much LH will be released in by the pituitary gland. For this reason, I personally prefer to use hCGu for the trigger, even in cases of ovarian hyperstimulation hyperstimulated, with one important proviso…that being that is she underwent “prolonged coasting” in order to reduce the risk of critical OHSS, prior to the 10,000 unit hCGu “ trigger”.
The timing of the “trigger shot “to initiate meiosis: This should coincide with the majority of ovarian follicles being >15 mm in mean diameter with several follicles having reached 18-22 mm. Follicles of larger than 22 mm will usually harbor overdeveloped eggs which in turn will usually fail to produce good quality eggs. Conversely, follicles less than 15 mm will usually harbor underdeveloped eggs that are more likely to be aneuploid and incompetent following the “trigger”.
Hope this helps!
Geoff Sher
PH: 800-780-7437
Hi. I am 46 years old and trying to concieve again. My youngest child is 3. My fsh is 7 and amh is 6. I had 9 follicles last month. My dr is recommending iui next month but she wont prescribe clomid or fermera as she says i ovulate on my own. However i have read online that taking these drugs can improve egg quality and give you more chances of conception
I dont have time or money to waste. What do you think?
Given your age and the effect on the biological clock, I tend to agree with your doctor.
Geoff Sher
Please Dr Sher could you tell me how many eggs is what you would like to end up with from an egg collection? I’m told the best ones are the ‘mature’ ones as they are the only ones which can be used. So how many eggs do you as IVF doctors hope to retrieve to call it a good result/response! This is my first time so I am unsure. Thank you!
That is a loaded question because the number would be influenced by individual capacity and the optimal number is the best that you have the potential to produce based on age and ovarian reserve. This having been said, ideally 10 or more mature (M2) eggs is a good number to get to…if possible.
Geoff Sher