Ended: 21-Sep-18 08:17:30
Ended: 24-Sep-18 18:48:06
Ended: 23-Sep-18 16:37:09
12h 38m left
If you and your partner are having trouble getting pregnant, you’re not alone. Some 15 to 20 percent of couples in the United States are infertile. Infertility is defined as not being able to get pregnant after one year of regular, unprotected sex without the use of birth control. Infertility may be due to a single cause in either you or your partner, or a combination of factors that may prevent a pregnancy from occurring or continuing. They typically include problems with ovulation, reproductive organs, hormones or sperm. Fortunately, there are safe and effective therapies for overcoming many infertility issues. These treatments significantly improve your chances of becoming pregnant. Since I see only female patients, I will focus on topics that impact female infertility. One of the first things physicians do when seeing a new patient with fertility questions is to look at the patient’s history, including general history, past pregnancies and menstrual history. They will perform a physical exam. Initially, a physician will want to determine if the problem is a sperm issue or a female issue. Once a physician looks at a patient’s history and physical, the doctor also will look at other external factors, such as smoking, drug use or sexually transmitted diseases, all which can affect fertility. Age also can impact fertility. If a woman is over 35 years old, pregnancy naturally becomes more difficult. Fertility in a woman over 40 declines significantly. Male fertility declines much slower and men are capable of fathering children into their 60s and beyond. Research shows that female issues account for about a third of fertility problems, male issues another third. both male and female issues account for 15 percent of problems and in 20 percent of cases, no cause is found. For women, there are some initial blood tests that can be ordered, and a doctor may order a sonogram or a hysterosalpingogram (HSG), which is an X-ray test that looks at the inside of the uterus and fallopian tubes and the area around them. Treatment depends on the cause, and also, in some cases, how much money a patient is willing to spend to pursue expensive treatment options. Infertility can be treated with medicine, surgery, artificial insemination, or assisted reproductive technology. Many times these treatments are combined. In most cases, infertility is treated with drugs or surgery. If you suspect. Source: www.kansas.com
The changes in Mei Xiang’s progesterone levels follow a fairly predictable pattern as she progresses through a pregnancy, either true or false. This allows the Zoo to roughly estimate when Mei Xiang will give birth if she is actually pregnant. This obligatory pregnancy or pseudopregnancy happens after every annual ovulation. That Mei Xiang’s hormones aren’t noticeably different between regular and pseudopregnancies presents the Zoo’s biologists with a significant challenge. If they can’t use hormones to determine if she’s pregnant, then they must find an alternative way to run a pregnancy test. Unfortunately there aren’t many options. That raises the question of ultrasound. Unlike cheetahs and many other animals at the Zoo, Mei Xiang will usually participate in ultrasounds. Yet they haven’t proven especially helpful. Even in 2005, when she gave birth to Tai Shan, Mei Xiang’s ultrasounds never revealed any hint of a cub. There could be many explanations for this. Panda cubs, at birth, are very small—about the size of a stick of butter. Spotting something that size on an ultrasound would be a challenge to begin with, but doing so in a giant panda is nearly impossible. So while it’s worth conducting the ultrasounds for the off chance of seeing something, they’re hardly the final word. Unfortunately, the only sure pregnancy test for a panda is to wait and see if she gives birth. Source: dcist.com
It's time you switched to a better browser We've made the tough descision to no longer support early versions of Internet Explorer (6 and below) and Firefox (3 and below), for secure browsing on MNT. Unfortunately these old web browsers do not support many crucial developments in online security, and therefore represent a threat to your online security, as well as the security of MNT. For the safety and security of your online experience, we strongly recommend that you switch to a more modern browser (we've provided links to a few at the top right of the page). While you will continue to be able to read MNT as normal, your actual experience may not be exactly as we intended and you will not be permitted to log-in to, or register for an MNT account. Thank you,. The MNT Team. Yanguang Wu, embryologist and associate scientist at the Centre for Human Reproduction in New York, NY, and colleagues publish their findings in the Journal of Endocrinology. In vitro fertilization (IVF) is a form of assisted reproductive technology (ART). First, fertility medication is administered to stimulate a woman's egg, or oocyte, production. The eggs are then retrieved from the ovaries and combined with sperm in a laboratory dish for fertilization. The embryos are then transferred into the woman's uterus. It is well established that IVF is more likely to be successful for women under the age of 40. According to Dr. Wu and colleagues, recent studies have shown women aged 38-39 have an IVF success rate of 23. 6%, while those aged 44 and older have a... However, the mechanisms behind this are unclear, which Dr. Wu puts down to lack of resources in clinical laboratories. However, with the resources available at the Centre for Human Reproduction, the team was able to take a closer look at what drives reduced oocyte quality in older women. Aging of the eggs' environment is the problem, not aging of the eggs themselves The researchers compared the reproductive tissue of egg donors aged 21-29, 30-37 and 43-47 years. Compared with egg donors aged 21-29 and 30-37, those aged 43-47 had reduced growth and multiplication of granulosa cells - the cells that support the oocytes inside a woman's. Source: www.medicalnewstoday.com
The guidelines require fertility clinics in Australia to collect the following information from sperm and egg donors: name, any previous name, date of birth and most recent address details of medical history, family history, and any genetic test results ...