Egg Retrieval Process & Procedure Explained

When considering fertility treatment, the egg retrieval process frequently stands out as a significant subject of conversation, as it often represents a crucial step towards achieving pregnancy for numerous families. Like any major procedure, there can be a multitude of questions regarding the egg retrieval procedure and the requirements to achieve optimal outcomes. This article seeks to address many of those questions, in addition to offering a comprehensive overview of what to expect during the egg retrieval process.

Definition of an Oocyte

An oocyte is commonly referred to as an egg, ovum (in singular form), ova (in plural form), and female gamete. It is an immature egg cell, or immature ovum, that matures within the ovaries of a female.

Following ovulation, a mature oocyte is released from the ovary and is capable of being fertilized by a sperm, resulting in the formation of a new zygote or a fertilized ovum. In Greek, the term Zygote translates to “Yoke.”

What is IVF Egg Retrieval?

An egg retrieval procedure is a crucial component of In Vitro Fertilization (IVF). Regardless of whether the eggs are from an intended mother or an egg donor, they play a vital role in the family-building process. IVF involves the recovery of eggs from the ovaries through egg retrieval, followed by fertilization in an embryology laboratory with sperm, and ultimately, the transfer of the embryo into the uterus.

Egg retrieval procedures are also used by future mothers seeking to preserve their fertility. Women undergoing cancer treatment, those wishing to have children later in life, or anyone considering fertility preservation.

Egg Retrieval Process

Preparation for egg retrieval involves a combination of medication, monitoring and pre-procedure-instructions.

Understanding the steps involved, from pre-cycle laboratory tests to fertilization, is vital for achieving a successful result. Below are the primary stages of the egg retrieval process:

Preparation for the cycle
Stimulating the ovaries
Egg retrieval procedure
Laboratory analysis and fertilization
Rest and egg retrieval recovery

Here, we elaborate on the aforementioned steps in detail to assist you in understanding what to anticipate throughout the egg retrieval process at every stage.

Read also this blog: Egg Donation Process for the Recipient | FAQ

Preparing for an Egg Retrieval

Being properly prepared and well-informed is essential for successfully navigating the egg retrieval process. Your fertility specialist should provide you with specific instructions regarding your treatment. Many intended mothers can expect the following when preparing for an egg retrieval.

Optimize Health for Fertility Window

Boosting your health for the upcoming fertility window is vital when getting ready for an egg retrieval procedure. The quality of eggs and ovarian function require time to improve. Fertility specialists advise planning in advance and considering the following several months in advance of your treatment:

Refrain from alcohol, cigarettes, marijuana, and vaping
Consume a nutritious diet
Participate in moderate physical activity
Establish a consistent sleep routine
Take a prenatal vitamin
Steer clear of endocrine disruptors
Reduce stress levels
Pre-Cycle Laboratory Tests

At The Embryon Family our fertility specialists order blood tests to check intended moms ovarian reserve (AMH) and look for any abnormalities. Intended dads will also go through blood tests, and a semen analysis (spermiogram) is required prior to starting IVF treatment. These pre-cycle tests can be done at our clinic or a local facility to avoid traveling. Patients can also expect a baseline ultrasound. After initial tests are reviewed, a physician will assign you with a Controlled Ovarian Hyperstimulation (COH) Plan for 8 to 14 days to encourage multiple follicles to grow and mature at a similar rate increasing the chances of a successful oocyte retrieval.

Stimulating Ovaries

Ovarian stimulation represents a vital phase in the egg retrieval procedure. This process involves encouraging the ovaries to generate multiple eggs. Typically, this is achieved through hormonal injections, which facilitate the maturation of more eggs than the body would normally prepare during a standard cycle.

The objective is to optimize the quantity of mature eggs available for oocyte retrieval, thereby enhancing the likelihood of successful fertilization.

Calendar Review

Understanding how long an IVF cycle is from start to finish can help create an expectation for a treatment timeline. A detailed review of the treatment calendar of events will be emailed and reviewed over the phone with you, so you know exactly the series of events pertaining to treatment.

Medications Injection Instructions

A prescription for your fertility medications will be issued to you for ordering from a speciality pharmacy, and the medications can be delivered to you before the commencement of the cycle.

Medications that stimulate the ovaries include gonadotropins, which are injectable hormones such as FSH and LH, as well as oral medications like Clomiphene citrate (Clomid) or Letrozole.

Gonadotropins directly promote the ovaries to generate multiple eggs, whereas oral medications function by affecting the brain to release FSH, thereby prompting the ovaries to produce one or more eggs.

The selection of medication is dependent upon your specific condition and is provided under medical supervision.

Once you have received the medications, a fertility nurse will provide instructions on how to administer each medication. This explanation typically occurs close to the time when the medications are to be started.

Fertility hormonal medications are generally initiated on the second or third day of your menstrual period. These medications are designed to stimulate the ovaries to produce multiple eggs. The response to these medications can differ based on your age, ovarian reserve (AMH), and the dosage administered. The dosage will be clearly specified on the treatment calendar. These medications are typically administered once (usually in the evening) or twice daily (morning and evening). The hormones are generally taken for an average duration of 8 to 14 days, although some may require a longer period to achieve successful stimulation.

Approximately one week after the initiation of these medications, a vaginal ultrasound examination will be conducted. The purpose of this ultrasound is to visualize the ovaries and count the number of follicles present. A follicle is a fluid-filled sac that contains an egg, and each follicle typically houses one egg.

Follicle Monitoring

By counting the follicles, we can assess your response to fertility medications. We will also evaluate the follicles’ size. The size of each follicle provides insight into the maturity of the egg. As you continue the medication regimen, these follicles will develop (approximately 3 mm every 2 days); and at a certain stage, they will be ready for egg retrieval. Typically, we prefer to retrieve the eggs when most follicles reach around 18 mm in size.

Occasionally, a blood test for the hormone Estradiol is conducted during the stimulation cycle. As the follicles mature, the eggs produce the Estradiol hormone. Therefore, monitoring the hormone’s level in the blood often provides a reliable indication of how the ovaries are responding to the medications. The level rises as the eggs mature and the follicles expand. A higher number of eggs or follicles correlates with an increased Estradiol level.

After the initial consultation, you will receive an updated calendar containing detailed instructions for the subsequent steps. You will be informed about which medication to continue and when to return for another ultrasound appointment. Typically, a follow-up appointment is scheduled 2-4 days after the first ultrasound. During this follow-up, an ultrasound and possibly a blood test will be conducted to assess the growth of the follicles. You will again be given further instructions on what to do daily. On average, two to four visits are required prior to the egg retrieval procedure.

When your OBGYN decides that the follicles are ready to be retrieved, you will be given instructions to take an HCG Trigger injection 36 hours prior to the egg retrieval procedure. This medication is crucial and needs to be at an exact time. It will release the eggs from their attachments to the walls of the follicles to float inside the follicular fluid. If the HCG Trigger shot is not taken correctly and at the exact time specified, the eggs will not be mature and will not be able to be aspirated.

You will be given verbal and written instructions on how and when to administer this trigger medication.

The HCG Trigger injection is usually given at night; the oocyte retrieval is scheduled 36 hours after this injection, which falls two days later in the morning.

Egg Retrieval Procedure

When the average diameter of most follicles reaches between 18 to 20 mm and the estradiol hormone level is suitably elevated, it is then appropriate to proceed with the retrieval of the eggs.

You will be required to arrive at our clinic at least one hour before the scheduled time for the egg retrieval procedure. It is essential that you refrain from eating or drinking anything after midnight on the night preceding the egg retrieval date. Your fertility team will provide you with the necessary guidelines for the egg retrieval procedure.

The egg retrieval procedure is conducted under “general anesthesia”. You will not experience any discomfort during the procedure and will regain consciousness within 10 to 15 minutes after its completion. The duration of the procedure typically ranges from 10 to 30 minutes, depending on the number of follicles present.

This egg retrieval procedure is carried out under ultrasound guidance, similar to the vaginal ultrasound examination that the patient undergoes during the stimulation cycle. A needle guide is affixed to the ultrasound probe, and a long needle is inserted through the guide. Using a microscopic technique, each follicle is punctured, and the fluid containing the egg is retrieved. The fluid is then promptly sent to our IVF laboratory, where the embryologists search for the eggs, isolate them, and place them in incubators.

After egg retrieval is completed, you are moved to the recovery area, where you will remain for approximately one to two hour. Pain medications may be administered at this time as necessary. Some discomfort is possible for a few hours following the procedure, and you may take Paracetamol at home as needed every four hours. Occasionally, mild nausea may occur, but this typically subsides within a few hours.

Lab Analysis & Fertilization

After egg retrieval, the eggs are collected and cleaned of the surrounding cells in the embryology lab, the eggs are then either cryopreserved (vitrified), incubated with sperm overnight, or sperm is directly injected into each egg for fertilization (ICSI). Based on the situation, your fertility specialist may suggest intracytoplasmic sperm injection (ICSI) to facilitate fertilization. The following day after insemination, the embryologist will assess the condition of the fertilized eggs.

A fertilized egg is referred to as an embryo. An embryo undergoes various stages of development. Embryos will be cryopreserved for future embryo transfers (FET). They can be frozen indefinitely. Our methods for freezing and thawing have seen significant advancements over the years.

Rest & Egg Retrieval Recovery

After one or two hour, once you are fully alert and relatively free of pain, the recovery nurse provides instructions, and the you are then discharged to go home. It is essential that you are accompanied by someone who can drive you home or to the hotel where you are staying and that you are not left alone for the remainder of the day.

Many may plan to return to work the following day, while others might require an extra day or two to rest and recuperate from the procedure. It is crucial to safeguard your ovaries and refrain from engaging in strenuous exercise and high-impact activities after egg retrieval; however, walking and light activities are generally acceptable. Be sure to thoroughly review your post-operative guidelines to ensure a successful egg retrieval recovery. Steps after egg retrieval IVF involve diligent self-care and following your doctor’s instructions.

Egg Retrieval Side Effects

Egg retrieval is typically a safe procedure; however, it may be accompanied by various side effects. Some women might encounter mild to moderate discomfort and fatigue, which can include bloating, cramping, and abdominal pain akin to menstrual symptoms. Additionally, bruising or tenderness at the injection sites and mood swings resulting from hormonal changes are frequently observed.

In rare instances, more serious complications such as ovarian hyperstimulation syndrome (OHSS) may arise, resulting in intensified pain, nausea, and fluid retention. It is crucial for women to vigilantly observe their symptoms and maintain open lines of communication with their healthcare provider throughout the entire egg retrieval process. After egg retrieval, if you notice any unusual symptoms, contact your clinic immediately. Steps after egg retrieval IVF and egg donor treatment are similar and include post-procedure monitoring.

Fertility Treatment Options

There is no universal treatment that fits everyone, making it essential to work closely with a fertility expert to identify the most effective approach tailored to your unique circumstances. At The Embryon Family Fertility Center, we provide a variety of customized treatment options. Our internationally recognized experienced team of fertility specialists employs the latest techniques and technologies to assist our intended parents in realizing their dreams of starting or expanding their families. We have helped many families with IVF and egg donation and have access to a wide network of donors, including Ukrainian egg donors.

We recognize that undergoing treatment can be a challenging and an emotional journey, and we are committed to ensuring your mental clarity and emotional peace throughout the entire time you are with us. Should you have any further questions or concerns about the egg retrieval process, we invite you to reach out to us today.

Egg Retrieval Process: What To Expect Before, During, & After

Definition of an Oocyte

What is IVF Egg Retrieval?