How long is the overseas assisted reproductive cycle? How long does it take from pre-examination, ovulation and egg retrieval to pregnancy test after transplantation?

How long is the overseas assisted reproductive cycle? Complete timetable from preparation to result confirmation

When planning to receive assisted reproductive medical services overseas, many people will first ask, "How long will the whole cycle take? Are you going to live abroad for a month? "

These two problems look similar, but they are not the same thing.

Overseas assisted reproduction involves two sets of time: one is the "medical time" determined by physical reaction, medication plan and embryo culture; The other set is the "travel time" determined by examination preparation, remote consultation, visa itinerary and hospital appointment.

Generally speaking, a single IVF treatment cycle takes about 3-6 weeks from the official start of medication to the test results; When a longer scheme is adopted, the time may be extended to 6-8 weeks. Both the National Health Service and the Human Fertilization and Embryology Authority of the United Kingdom summarize a conventional treatment cycle as about 3-6 weeks, but different schemes and individual reactions will cause obvious differences.

If all the preliminary data sorting, supplementary examination, waiting for menstruation, doctor appointment and cross-border travel are counted, the actual planning can not usually be arranged only in three or four weeks. According to the standard of project management, 6-12 Zhou Huigeng is reserved, but this is only a reference for itinerary planning, not a fixed medical cycle.

Let's be clear: what kind of "cycle" are you asking?

The same is "how long is the overseas assisted reproductive cycle", and different people may ask completely different times.

The time caliber mainly includes common planning methods.

The cycle of medical treatment is usually about 3-6 weeks, or the cycle preparation, ovulation promotion, egg retrieval, embryo culture, transplantation and test results may be longer.

The overseas stay time is divided into one or more trips according to the monitoring location and scheme, including arrival at the hospital, examination, monitoring, egg retrieval or transplantation, and postoperative observation.

It may take several weeks from consultation to entering the cycle to sort out medical records, remote consultation, supplementary examination, determination of plans and waiting for menstruation.

It may span two or more menstrual cycles from the first ovulation promotion to the completion of the egg retrieval cycle, embryo treatment, physical recovery, endometrial preparation and transplantation.

From the beginning of treatment to the result confirmation, ovulation, transplantation, corpus luteum support and test results depend on the arrangement of fresh embryo transplantation or subsequent transplantation.

Therefore, "one cycle" cannot be simply equated with "how long to stay abroad".

Some people have a complete pre-examination, the menstrual time is smoothly connected with the hospital arrangement, and the entry cycle is faster; Some people need to deal with uterine cavity, endometrium, hormones or other basic problems, and the time to really start treatment will be adjusted backwards.

A timeline to understand the whole process

The time of overseas assisted reproduction can be divided into six consecutive stages.

Data collation and remote evaluation: about 1-3 weeks.

This stage mainly sorts out recent hormone examination, ovarian reserve evaluation, ultrasound results, infection screening, previous surgical records and previous treatment data. Men usually need to complete the corresponding fertility check.

According to the data, the hospital judges whether it is necessary to make up the examination, whether it can enter the cycle directly, and what kind of drainage promotion and transplantation path is suitable. Incomplete examination, overdue report or complicated past medical history will increase communication time.

Waiting period starts: days to weeks.

Assisted reproductive therapy usually needs to be combined with menstrual cycle arrangement. Even if the assessment has been completed, it may be necessary to wait for the next menstrual period, or adjust the cycle first.

In some schemes, falling tone, drug pretreatment or other preparations will be added before the formal promotion of excretion. ASRM pointed out that some hormone drugs can be used to assist in arranging the treatment cycle, but the specific use should be decided by the doctor according to the individual situation.

Discharge promotion and monitoring: usually about 8-14 days.

After entering the stage of promoting ovulation, it is necessary to use drugs according to the plan, and observe the follicular development through ultrasound and hormone detection. According to the patient data published by some medical institutions, the common time of ovulation induction injection is about 8-14 days, but everyone's ovarian reaction is different, so the date of egg retrieval cannot be fixed in advance.

If the growth rate of follicles is inconsistent and the hormone changes are not in line with expectations, the doctor may adjust the dosage, increase monitoring or extend the medication time.

This is also why the return time of the ticket should not be too tight.

Egg retrieval and embryo culture: about 3-7 days.

When the follicular development reaches the conditions set by the doctor, the trigger medication will be arranged and the eggs will be taken at the specified time. According to some hospital data, egg retrieval is usually arranged about 34-38 hours after the last trigger medication.

After taking eggs, enter the laboratory culture stage. According to the embryo development and medical plan, it may be observed until the third day, or it may continue to be cultured until the fifth or sixth day. Whether embryos are suitable for further culture, preservation or transplantation needs to be judged in combination with laboratory results.

Transplant path: eggs may be taken immediately, or other arrangements may be made.

If the physical condition, hormone level, endometrial condition and embryo condition are all suitable, the doctor may arrange for periodic transplantation. Public medical information shows that transplantation can usually be arranged on the second, third or fifth day after egg retrieval.

But not everyone is suitable for transplantation when the cycle is completed.

If the doctor suggests that the embryo should be preserved first, or it is necessary to wait for the body to recover, adjust the endometrium and complete the genetic test of embryo, then the transplant will be arranged in the subsequent menstrual cycle. The description of the whole embryo preservation scheme by HFEA in Britain also points out that embryos can be preserved first and then transplanted in the subsequent cycle.

Waiting for results after transplantation: about 10-14 days.

After transplantation, it is usually necessary to continue luteal support and test according to the designated date of the hospital. In the treatment schedule given by some medical institutions, the test results are usually arranged about 10-12 days after transplantation.

Whether it is necessary to recheck blood value, adjust drugs or continue observation should be subject to the arrangement of the attending doctor. It is not recommended to stop taking drugs by yourself because of using home testing tools in advance.

The overseas stay time of the three travel routes is not the same.

The itinerary of overseas assisted reproduction can usually be divided into three categories. There is no unified advantages and disadvantages of different paths, and the key lies in whether the medical connection is clear.

Path A: Ovulation promotion monitoring and egg retrieval are completed overseas.

Suitable for people who want the same medical team to complete the main links, or the monitoring standards at home and abroad are difficult to connect.

It is usually necessary to arrive in advance to complete basic inspection, ovulation promotion monitoring and egg retrieval in the local area. If the current cycle of transplantation is arranged later, the overseas stay will also cover embryo culture and short-term observation after transplantation.

Advantages: Doctors can continuously master the monitoring data, and it is relatively convenient to temporarily adjust the plan.

Restrictions: The overseas stay is long, so it is necessary to coordinate work, accommodation and accompanying arrangements in advance.

Path B: Part of the monitoring is completed in China, and it will leave the country when the eggs are taken.

Some hospitals allow patients to complete the previous monitoring in China, pass the ultrasound and hormone results to overseas doctors, and then determine the date of departure according to the follicular situation.

Advantages: it can reduce the time of overseas accommodation and have relatively little impact on work arrangements.

Limitation: There are high requirements for hospital communication efficiency, inspection standards and report transmission speed. Once the follicular response is different from the forecast, the flight time may need to be temporarily adjusted.

This method is not suitable for everyone, especially those who have unstable reaction to promoting excretion in the past, need to adjust their medication frequently or have complex basic conditions.

Path C: Egg retrieval and transplantation are divided into two trips.

The first trip completes ovulation promotion, egg retrieval and embryo culture, and the second trip completes transplantation when the physical condition and endometrial conditions are suitable.

Advantages: Each overseas stay can be relatively shortened, leaving room for physical recovery, embryo evaluation and transplant preparation.

Restrictions: the overall time span is long, and it is necessary to arrange for two exits; If the menstrual cycle or endometrial preparation does not meet the requirements, the second trip may be adjusted.

It is common to arrange by stages for people who need to carry out assisted reproductive evaluation, embryo genetic testing, endometrial preparation or other individualized fertility programs first.

What circumstances are likely to lengthen the cycle from one month to several months?

The core that affects the overseas assisted reproduction time is not the distance between countries, but whether there is a "waiting node" during the treatment.

Inspection data is incomplete.

Lack of basic examination, too long report time and unclear image data may all lead to the hospital's inability to make a plan directly. The temporary make-up examination seems to be delayed for only a few days, but if you miss the start time of this menstruation, it may be postponed to the next cycle.

Menstrual time changes

Stress, changes in work and rest, travel across time zones and fluctuations in physical condition may all affect the original plan. The date of treatment can usually only be confirmed step by step according to menstrual time and monitoring results.

Ovarian reaction is different from prediction.

During ovulation induction, follicles may grow faster, slower or out of sync. Doctors need to adjust drugs according to actual monitoring, and the date of taking eggs will also change.

Not suitable for periodic transplantation for the time being.

If the hormone level, endometrial state or physical recovery are not suitable for immediate transplantation after egg retrieval, the doctor may suggest that the embryo be preserved and wait for the subsequent cycle. The focus of this decision is medical adaptation, not simply the pursuit of shortening the time.

Need embryonic genetic testing

Additional time is needed for embryo sampling, testing, result analysis and subsequent transplantation preparation. There are differences in different laboratories, samples and hospital processes, which cannot be summarized by fixed days.

The uterine cavity or endometrium needs further treatment.

If the examination finds uterine cavity structure, intima thickness, inflammation or other problems, it is usually necessary to evaluate and deal with them before deciding the transplant time.

Transplantable embryos were not obtained in one cycle.

The number of eggs taken is not equal to the number of mature eggs, and the number of mature eggs is not equal to the number of embryos that can be used finally. Assisted reproduction involves several continuous screening links, and it is not certain that the eggs can be transplanted as planned after they are retrieved. ASRM also reminds that not all eggs are fertilized, and not all embryos are implanted.

How to reduce "invalid waiting" instead of blindly rushing to the cycle?

The key point of shortening the cycle is not to shorten the medical observation time, but to put the preparations that can be completed in advance before leaving the country.

Before departure, you can complete the following items:

Complete the inspection according to the hospital list and confirm the validity of the report;

Arrange the previous treatment records in chronological order;

Explain the history of surgery, medication and allergies in advance;

Confirm whether the monitoring of emission promotion is completed at home or overseas;

Ask if you plan to transplant in the current period;

Clear the general path of embryo culture, preservation and detection;

Reserve an adjustable return date;

Do not change the dosage or stop taking drugs according to the network experience.

It is also necessary to confirm when the "cycle time" mentioned by the hospital begins to be calculated.

Some institutions calculate from the first day of menstruation, some from the date of formal medication, and some only calculate the stage from ovulation to egg retrieval. If the two sides use different time scales, it is easy to misunderstand that "the hospital says two weeks, and the patient thinks the whole process only takes two weeks".

Users are also concerned about: four practical problems in cycle arrangement.

Can overseas assisted reproduction be completed in one month?

Some people who adopt a shorter regimen, have a complete examination and are suitable for transplantation in the current period may complete the main treatment link in about one month. But it can't be understood that everyone can finish it in one month. From consultation, examination to result confirmation, it is usually necessary to leave allowance for menstrual waiting and stroke change.

Do I have to live abroad all the time during the period of promoting discharge?

Not necessarily. Whether some monitoring can be completed in China needs to be confirmed by overseas doctors. The inspection equipment, report format, time arrangement and communication efficiency of the two places will all affect the feasibility, so we can't decide to go directly to collect eggs after domestic monitoring.

How long can I return to China after taking eggs?

It is necessary to combine anesthesia recovery, physical reaction, whether to plan the transplant in the current period and the doctor's review results. If you have obvious abdominal distension, pain, bleeding or other discomfort, you should contact the medical team in time, and you should not just return according to the date of the ticket.

Why do some people end in two or three weeks, and some people need months?

Two or three weeks usually only calculate the core links such as promoting ovulation, taking eggs and short-term culture; A few months may include pre-conditioning, multiple egg retrieval cycles, embryo detection, physical recovery and subsequent transplantation. The statistical starting point and ending point of the two are different, so they cannot be compared directly.

How long is the overseas assisted reproductive cycle? Finally, it depends on three time points.

To judge your own cycle arrangement, you don't need to ask "how many days did others do it" first, but you should first confirm three time points:

First, when can we officially enter the emission promotion cycle;

The second is whether the transplantation can be arranged as planned after egg retrieval;

The third is whether it is necessary to split the egg retrieval and transplantation into two trips.

From the medical process, a routine treatment cycle is usually about 3-6 weeks, and a longer regimen may take 6-8 weeks; From the perspective of cross-border planning, data preparation, waiting for menstruation, booking trips and possible adjustments should also be taken into account.

Therefore, it is safer not to pursue a fixed answer, but to make a "medical timetable" and a "departure itinerary" after the doctor completes the evaluation. Only by arranging the two sets of time synchronously can we reduce the temporary change of visa, repeated inspection and missed cycle.