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In vitro fertilization (IVF) is a cornerstone of assisted reproductive technology as its most common method that has transformed the management of infertility and expanded options for family building. Since its first success in 1978, IVF has evolved into a widely utilized, evidence-based intervention accounting for a growing proportion of births in the United States. This course reviews this procedure that involves controlled ovarian stimulation, oocyte retrieval, laboratory fertilization, and embryo transfer, with applications extending to preimplantation genetic testing and fertility preservation. This activity outlines the underlying reproductive anatomy and physiology, indications across diverse infertility etiologies, and key procedural steps, while addressing risks such as ovarian hyperstimulation syndrome and multiple gestation. Participants will gain an understanding of candidates for IVF, individualized treatment protocols, complications, and current guidelines. This activity for healthcare professionals is designed to enhance the learner's competence in applying IVF techniques, evaluating indications and contraindications for the procedure, and implementing an appropriate interprofessional approach when caring for patients undergoing IVF to optimize patient outcomes through safe, effective, and patient-centered reproductive care. Objectives: Identify appropriate candidates for in vitro fertilization. Differentiate indications for conventional fertilization versus intracytoplasmic sperm injection based on individualized patient factors. Evaluate patients for complications of in vitro fertilization to reduce morbidity. Coordinate management with the interprofessional team members to improve outcomes in patients undergoing in vitro fertilization. Access free multiple choice questions on this topic.

In vitro fertilization (IVF) is a groundbreaking assisted reproductive technology (ART) that has revolutionized fertility treatment since its inception in the late 20th century. First successfully performed by Dr. Robert Edwards and Dr. Patrick Steptoe in 1978 with the birth of Louise Brown in the United Kingdom, the world's first "test-tube baby," IVF offered new hope to individuals and couples facing infertility.[1] IVF involves retrieving oocytes from the ovaries following ovarian stimulation and fertilization with sperm outside the body in a laboratory setting. The resulting embryos are cultured for several days and then transferred into the uterus, typically under ultrasound guidance, to achieve pregnancy. Over the decades, IVF has evolved from an experimental procedure into a widely accepted and increasingly successful treatment, thanks to advancements in medical technology, laboratory techniques, and genetic screening. The International Committee for Monitoring Assisted Reproductive Technology (ICMART) has maintained the World IVF registry data since 1989. It estimates that around 10 million infants have been born from ART since its conception.[2] Today, IVF accounts for 2.6% of births in the United States and steadily grows each year.[CDC. ART Surveillance. 2024] IVF is indicated for a wide range of infertility etiologies, including tubal factors, severe male-factor infertility, endometriosis, ovulatory dysfunction, and unexplained infertility.[3] Its use has expanded beyond treating infertility to include preimplantation genetic testing for hereditary or chromosomal conditions, fertility preservation, and family building through donor gametes or gestational carriers. As the field continues to progress, IVF remains a cornerstone of reproductive medicine, continually expanding the possibilities of conception and parenthood.

While IVF is a low-risk procedure, monitoring for complications and risks associated with the procedure, including ovarian hyperstimulation syndrome, ovarian torsion, intra-abdominal bleeding, infection, heterotopic pregnancy, and multiple gestation, is important. Ovarian Hyperstimulation Syndrome OHSS is the most serious, potentially life-threatening complication of ovarian stimulation and ovulation induction. It almost always occurs after stimulation with exogenous gonadotropins.[39] OHSS is driven by VEGF (vascular endothelial growth factor) released from hyperstimulated granulosa cells, leading to capillary leak, third spacing, ascites, and hemoconcentration.[40] In mild cases, women experience abdominal distension, nausea, and vomiting. In more severe cases, ascites develops with severe abdominal pain and possible pleural effusion, which may lead to decreased pulmonary function and hypoxia. Patients may show signs of hypovolemia, oliguria, elevated creatinine, increased liver transaminases, leukocytosis, and electrolyte abnormalities. Hemoconcentration will increase the risk of thromboembolism. In critical cases, acute renal failure and disseminated intravascular coagulation may result in death. The WHO estimates the incidence of severe OHSS to be 0.2% to 1% of all stimulation cycles.[41] Reduced hCG doses and the use of recombinant LH (Lupron) are alternative ovulation triggers that are proposed to reduce the risk of OHSS.[39] Ovarian Torsion Ovarian torsion is an uncommon but serious complication of IVF, primarily due to ovarian enlargement from controlled ovarian hyperstimulation and the presence of multiple or large follicles or cysts.[42] Prompt recognition is critical so that surgical intervention can be performed to preserve ovarian function. Heterotopic Pregnancy Heterotopic pregnancy occurs when there is simultaneously an intra-uterine pregnancy and an extra-uterine pregnancy. These abnormal pregnancies are typically associated with multiple embryo transfer, tubal infertility, pelvic adhesions, and a history of ectopic pregnancy.[43] Multiple Gestation

Ovarian torsion is an uncommon but serious complication of IVF, primarily due to ovarian enlargement from controlled ovarian hyperstimulation and the presence of multiple or large follicles or cysts.[42] Prompt recognition is critical so that surgical intervention can be performed to preserve ovarian function. Heterotopic Pregnancy Heterotopic pregnancy occurs when there is simultaneously an intra-uterine pregnancy and an extra-uterine pregnancy. These abnormal pregnancies are typically associated with multiple embryo transfer, tubal infertility, pelvic adhesions, and a history of ectopic pregnancy.[43] Multiple Gestation Multiple gestation has historically been a major consequence of ART; however, rates have declined significantly with the adoption of single embryo transfer to promote singleton gestation.[44] Current guidelines published by ASRM and the Society for Assisted Reproductive Technology (SART) recommend single embryo transfer for patients with a favorable prognosis (ie, younger than 35, more than 1 high-quality embryo available, first or second IVF cycle, previous successful IVF, or recipient of donor oocytes). As a result of these recommendations, twin gestations decreased from 23% in 2014 to 12.4% in 2017.[44] Multiple gestations can lead to an increased risk to both mother and fetus, including preterm birth and hypertensive disorders of pregnancy. Interestingly, however, the rate of hypertensive disorders in IVF twin pregnancies compared to twins conceived naturally does not differ.[45][44][46] However, a significant difference in the rate of preterm birth between IVF twin versus naturally conceived twin pregnancies does not seem to be present, likely due to the higher risk of both hypertension and preterm birth in twin pregnancies in general.[47] One systematic review and meta-analysis found that clear differences emerge when comparing singleton pregnancies. Additional Complications

Interestingly, however, the rate of hypertensive disorders in IVF twin pregnancies compared to twins conceived naturally does not differ.[45][44][46] However, a significant difference in the rate of preterm birth between IVF twin versus naturally conceived twin pregnancies does not seem to be present, likely due to the higher risk of both hypertension and preterm birth in twin pregnancies in general.[47] One systematic review and meta-analysis found that clear differences emerge when comparing singleton pregnancies. Additional Complications Pandey et al found that singleton IVF pregnancies are associated with increased risk of hypertensive disorders of pregnancy, preterm delivery, as well as gestational diabetes, antepartum hemorrhage, congenital abnormalities, cesarean sections, low birth weight, small for gestational age, and perinatal mortality. However, Hayashi et al found that adverse obstetric outcomes in infertile patients were independent of treatment type, suggesting maternal factors, rather than ART methods, eg, IVF and ICSI, may underlie these risks.[48]

IVF is a cornerstone of assisted reproductive technology used to manage infertility from tubal disease, male factor infertility, endometriosis, ovulatory dysfunction, and diminished ovarian reserve. The process involves controlled ovarian stimulation by manipulating the hypothalamic-pituitary-gonadal axis, oocyte retrieval, in vitro fertilization, and embryo transfer into a hormonally prepared uterus. Advances in embryo culture and preimplantation genetic testing have expanded its applications and improved outcomes. Careful evaluation of reproductive anatomy, hormonal function, and patient-specific risk factors is essential to guide therapy and minimize complications such as ovarian hyperstimulation syndrome, multiple gestation, and ectopic or heterotopic pregnancy. Interprofessional collaboration is fundamental to optimizing IVF outcomes and patient-centered care. Physicians lead diagnosis and treatment planning, while primary care clinicians and advanced practitioners facilitate early recognition, initial evaluation, and timely referral. Nurses coordinate care, provide education, and monitor treatment response, while embryologists oversee fertilization and embryo development. Pharmacists ensure safe and effective medication management. All team members share responsibility for clear communication, emotional support, and shared decision-making to address the psychological stress associated with IVF, thereby improving adherence, reducing attrition, and enhancing overall safety, quality, and reproductive success.