Ovarian Dating/Ovulation Induction
Ovarian dating is that we know the date of the ovulation in advance then can plan for sexual intercourse schedule for conceiving in each month. In natural cycle of the ovulation will produce one egg (follicle) from each side of ovaries alternately. After the egg ovulate, it travels into the fallopian tube for fertilize with sperm and become to the embryo. The embryo will travel back to the uterus and completely develop pregnancy process.
Ovarian dating can be easily calculated if the menstrual cycle is consistent between 21-35 days, such as the monthly period comes every 26 days deducted by 14 to be (26-14 = 12) then we will know the ovulation date will be on the 12th day of the month. If the monthly cycle comes every 28 days, take 14 to deduct (28-14 = 14) then the ovulation date will be on the 14th day of the month. Also, if the women have a 32 days cycle then ovarian dating are 18 days (32 deduct14) of the menstrual cycle. Nowadays ovarian dating can be more convenient for calculation by computer program, mobile phone application or a urine test kit.
For the women who have irregular menstrual cycle, the ovarian dating cannot predict for ovulation phase. This women group are suggested to meet doctor at Smile IVF for the process of ovarian stimulation and ovulation induction.
OI : Ovulation Induction
Ovulation induction is the process that doctor will give the ovulation medicines to grow the right size of eggs until the ovulation. Sometimes hormonal medicines are used to induce the ovulation in order to make more matured egg number and this can increase a chance of pregnancy. In each cycle, the expected eggs are about 1-3 eggs per one time.
Precise and exact date of the ovulation will help determine the appropriate time of having sexual intercourse and maximizing the chances of pregnancy for each month.
Who is suitable for ovulation induction?
- In women with normal fallopian tube for both sides or at least one side. Having irregular menstruation, Pituitary gland disorder, Thyroid hormone problem, these all cause irregular ovulation.
- In women with normal ovulation still get the benefit from ovulation induction by increasing the chance of pregnancy from a greater number of ovulation egg in that cycle.
- Male partner should have sperm and normal in quantity, motility and morphology (shape).
Doctor starts using oral stimulants or injections to stimulate antral follicle (egg) at the beginning of the menstrual cycle or around Day 3 – Day 5 of period cycle. During 5 days of ovarian stimulation, doctor will ask the appointment for monitoring the growth of eggs by using vaginal ultrasound examination. When the eggs size reach to 18-20 mm, the eggs will be induced by hormonal medicine and also confirm by the urine test sheet to determine the date for having sex.
Chance of success
The pregnancy rate depends on the basic factors such as age of the female, number of eggs, quality of eggs and sperm quality. In women aged less than 35 years, the success rate is in between 10-15% per month or 40 – 50% of success if the patient is treated for 6 months. After that, the success rate will be reduced by more than half to 5-7% per treatment cycle. Also, if the treatment has done for more than 1 year ago, the chance of pregnancy is very few, only 2-3% per month and if the age is higher, the success will be reduced again. Therefore, if you have tried this method for more than 6 months, you should hurry to meet doctor for medical advice.
Advantage of ovulation induction
Convenient method, uncomplicated to operate and save cost. It is a chosen method chosen to support natural pregnancy.
Disadvantage of ovulation induction
Ovulation induction can apply for some groups. The success rate depends on many factors from male and female partner such as egg number, sperm quality and infertility condition of each other that cause low pregnancy opportunities.