You can call us at 314-576-1400 or email us for a free, immediate, and personal telemedicine consultation with Dr. Silber. read more

Infertile patients cannot afford to wait for treatment while their eggs get older.

Dr. Sherman Silber, Infertility Center of St. Louis, is offering free video consultations for patients who need to plan now for their treatment while stay-at-home orders are in place. He is talking to and evaluating patients in their home to comply with social distancing measures.

Dr. Silber is discovering that patients actually prefer this method of telemedicine consultation over the conventional office visit. Patients have conveyed that “it is so much more convenient and less stressful” to have a free telemedicine personal consultation than to take a day off from work to travel to the doctor’s office and sit with other nervous patients in the waiting room.

The COVID-19 pandemic is thus changing much of the way we will do things in the future, and for the better. “Our patients are surprisingly much happier with this approach. Of course, at some point we need to perform hands on treatment. But with this new manner of seeing patients, we can come to the right diagnosis and treatment plan for most patients more efficiently, quickly, and painlessly, with no loss of personal one-on-one communication.” This is a very welcome new era of telemedicine that has been forced on us by the current difficult times.

Treating Infertility – Improvements in IVF Laboratory

Treating Infertility by Sherman J. Silber

Click Here to download Treating Infertility in PDF format


Improvements in the IVF Laboratory

IVF is no longer a tenuous, last ditch effort to be resorted to after all else has failed. We can now create a completely safe environment in the IVF laboratory for the eggs and embryos, removing any possible downside to IVF over attempts at conventional treatment with its low success rates.


Petri dish set-up for IVF culture in microdroplets under perfect conditions that would ideally be found in your own fallopian tube and uterus.
Petri dish set-up for IVF culture in microdroplets under perfect conditions that would ideally be found in your own fallopian tube and uterus.

For example, a major improvement in embryo culture in our lab was realizing that the oxygen content in the air we breathe is much too high for eggs and embryos. In fact, most cells in the body are exposed to a much lower concentration than the air we breathe. Too much oxygen delivered to these cells can, in a sense, overheat the cell. So it is much better to culture the embryos in only 5% oxygen (not the 20% that is in air). This is difficult to do. Large amounts of pure nitrogen gas have to be blown constantly through the incubator at a carefully controlled rate to lower the oxygen concentration in the incubator. But it is worth that extra effort to get higher pregnancy rates.

Embryos (blastocysts) cultured in vitro before transferring back to patient.
Embryos (blastocysts) cultured in vitro before transferring back to patient.

Classically, most IVF labs have cultured embryos at a pH (that means acidity) of 7.4 (the normal acid-base of your blood), and at an oxygen concentration of 20% (the same as in the air we breathe). However, these are not the acid or oxygen concentrations that are most favorable for embryo growth and development. In fact, the acid concentration inside the embryo is normally much greater than that, and the oxygen concentration is much lower. Conventional IVF culturing conditions, therefore, are too alkaline and too oxygen-rich. In fact, oxygen concentration in the fallopian tube is only about 8% (not 20% as in air), and in the uterus, it is as low as 2%. So we now know exactly what are the correct conditions in the IVF lab to perfectly mimic what would be present in the fallopian tubes and uterus of a fertile woman. We can safely culture your embryos to day 5 or 6 without fear of harm.

This type of optimal culturing of embryos requires a lot of extra attention. To reduce the oxygen concentration in the incubator from 20% to 5% requires blowing through a huge amount of nitrogen (95%), and to keep the pH acid at 7.2 (but not too acid below 7.2), requires careful monitoring of the acidity of the media. This represent a lot of extra work, but it is well worth the effort.