Patients who undergo IVF treatment must come across this term, “TRIGGER SHOT”. This step is crucial to define whether the procedure is successful or not. If the ovary matures, it releases an egg which is helpful for the egg retrieval procedure. Let us explore the comprehensive overview trigger shot in the IVF procedure.
What is a Trigger Shot in IVF?
The trigger shot plays a crucial role in the IVF process. Its main purpose is to help the eggs complete their final stage of development and detach from the follicular wall. Because only the matured eggs are taken during the embryo retrieval procedure.
As the name suggests, this injection triggers the ovaries to release the mature eggs.
Role of Trigger Shot in IVF Procedure
An essential part of IVF is a trigger shot. The purpose of this injection is to aid the eggs in reaching the last stage of development and shedding off the follicular wall, to which they are firmly connected. You may also wonder why this shot is required. This shot is crucial for embryos to develop nutritiously, mature eggs are necessary.
You may find the most precious human chorionic gonadotropin (hCG) hormone in this trigger shot, which is essential to stimulate the body’s natural hormones that aid in the full maturation of the eggs. In the absence of this injection, the eggs may not be prepared for fertilisation, which is necessary for IVF to be successful.
The matured eggs are ready for the egg retrieval process, which enables proper embryo development and successful fertilization.
The success of the IVF procedure lies in this trigger shot by tricking the ovaries into ovulating a mature egg.
How does Trigger Shot work?
This shot works amazingly by supporting egg maturation and ovulation. The Human chorionic gonadotropin (hCG) hormone in this injection mimics the functions of the body’s natural luteinizing hormone (LH). The effective function of the trigger shot as follows:
- Maturing Eggs: After the shot, the eggs finish maturing and are prepared for retrieval.
- Releasing Eggs: The injection causes the eggs to detach from the follicular wall and move into the follicle fluid.
- Initiation of Meiosis: The eggs lose half of their chromosomes from 46 to 23 during meiosis, which is brought on by the injection.
Timing of Giving Trigger Shot
If we talk about the situation of IVF, the moment is really crucial and the trigger injection is an instance of the same. Generally, this injection is given around 36 hours before the day on which the eggs are to be collected. The reason for this exact timing is very much related to the cycle of releasing eggs.
Let’s take an example to explain it further, you are going to have egg retrieval on Sunday morning, so it is quite obvious that you must take the trigger shot late Friday night. Since you cannot afford even a slight delay in your IVF treatment, it is extremely important to be very attentive to your doctor’s timings. Your eggs will be the best if you follow the doctor’s instructions.
How to Inject Trigger Shot by Yourself?
You can inject your trigger shots by yourself. There are two ways of injecting trigger shots. They are either administered intramuscularly, which means deeper into the muscle, or into the layer of fat just beneath the skin, generally around the abdomen.
Most people prefer the abdomen area to inject the shot by themselves, because of its easy access.
You will receive instructions from your fertility team on how to administer the shot to yourself. Don’t get frightened by seeing more injections, just think about the end result and go through the process.
Your doctor will give you thorough instructions and perhaps even arrange a practice session to make you more comfortable.
Follow the instructions as suggested by your advisor. If you need any emotional support, have your friend or partner to assist you in this process.
Missed Trigger Shot: What You Need To Know?
The first instruction you are given when you start your IVF procedure is don’t miss your IVF injections. If you miss anyone during your cycle what will happen? Your IVF cycle may become more complicated if you miss the trigger injection or take it at the incorrect time.
It’s crucial to get in touch with your fertility clinic right away if this occurs. Your egg pick-up time may be able to be changed, but prompt communication is essential.
By postponing the egg retrieval or changing the medication schedule, your doctor might still be able to save the cycle, depending on the circumstances.
Missing the shot, on the other hand, can often result in a cycle that is emotionally and financially difficult to break.
Therefore, the effectiveness of the treatment depends on establishing a strategy and setting reminders to make sure the shot is administered at the exact time your doctor has prescribed.
Possible Side Effects of Trigger Shot
The trigger shot used in fertility treatments is generally safe, but some women may experience side effects. These can include:
- Mild Injection Site Discomfort: Some women may feel soreness or irritation when the injection is given.
- Bloating or Abdominal Discomfort: It’s common to experience discomfort in the abdomen due to increased ovarian activity and enlargement.
- Ovarian Hyperstimulation Syndrome (OHSS): In rare cases, an overreaction to the hormones in the shot can lead to enlarged ovaries and other complications.
Significance of Trigger Shot in IVF
The IVF trigger injection is a small yet effective part of the IVF process. The maturation of the eggs increases the chances of successful fertilisation in the laboratory. This step is crucial to many couples’ capacity to realise their dream of becoming parents, even though it could seem like just another injection.
Can I Walk After a Trigger Shot?
Yes, in most IVF cycles gentle walking after a trigger shot is not only allowed but often encouraged, as long as you feel comfortable.
Safety of walking
Typically, gentle and less strenuous activities such as walking are allowed and recommended during an IVF cycle as well as around the time when the trigger shot is administered. These activities are great for the blood circulation, stress relief, and also for limiting the chances of blood clots that are ioncially elevated due to hormones and early pregnancy.
What to avoid
Usually, high-impact or heavy exercises (running, HIIT, vigorous aerobics, jumping, heavy lifting, and intense core work) are not recommended as the ovaries that are enlarged become more likely to twist (ovarian torsion).
In addition, it is suggested not to perform activities that involve abrupt changes of direction or intense abdominal strain during the late stimulation phase after the administration of the trigger shot.
Practical tips
- Keep your walks light and of a normal, steady speed rather than fast or power walking.
- If you experience pelvic pain and decide to stop and rest. If you also experience bloating that gets worse, dizziness, or shortness of breath, and inform your clinic.
- Just abide by the general principles of exercise given by your fertility doctor.
Conclusion
The trigger shot increases the chances of a successful outcome in IVF by preparing the eggs for fertilisation and retrieval. Although it may present challenges or problems, it is an essential component of assisted reproduction.
Understanding every step of the IVF process, including the trigger shot, can make it easier to navigate. Knowing what lies ahead can help you feel more in control and prepared for the excitement that lies ahead.
FAQ’s
Yes. Trigger shots are required to develop the eggs for collection. Women undergoing IVF therapy must perform a trigger shot. Following the injection, your ovaries release mature eggs to collect during the egg retrieval procedure.
For patients undergoing IVF procedures, the use of hCG to induce ovulation is linked to greater pregnancy rates than spontaneous ovulation. Therefore, the chances of successful pregnancy are increased when hCG is used to stimulate ovulation.
Ovulation naturally occurs about 36–40 hours after the trigger injection (hCG or similar), but in IVF, egg retrieval is timed earlier. usually about 34–36 hours after the shot, so eggs are collected just before they would be released.
Most people experience only mild discomfort at the injection site.a brief sting or soreness. similar to other fertility injections. Major pain is uncommon and usually short‑lived.
Clinics generally advise resting on the day of egg retrieval and returning to light activity the next day if you feel well. Avoid strenuous exercise, heavy lifting, or high‑impact workouts for several days as the ovaries settle. (General clinical guidance)
The trigger shot is given once your follicles reach the target size on ultrasound, typically around stimulation day 8–12 of an IVF cycle, depending on your response.
The trigger shot does not improve inherent egg quality, but it helps eggs complete final maturation, making them ready for fertilisation — which indirectly supports better IVF outcomes when eggs are otherwise healthy.
