Fertility and Infertility Practice Questions

Q: All of the following are causative factors for infertility in Pelvic Inflammatory Disease (PID) except?

Anovulation. **Explanation:** **1. Why Anovulation is the Correct Answer:** Pelvic Inflammatory Disease (PID) is primarily an inflammatory and infectious process affecting the upper genital tract. The infertility associated with PID is **mechanical and structural** in nature, rather than hormonal. PID causes damage to the fallopian tubes and pelvic peritoneum, but it does **not** typically interfere with the Hypothalamic-Pituitary-Ovarian (HPO) axis. Therefore, ovulation usually remains intact, making "Anovulation" the exception. **2. Analysis of Incorrect Options:** * **Cornual Block (A):** Ascending infection (commonly *Chlamydia* or *Gonorrhea*) causes endosalpingitis. This leads to fibrosis and scarring, which can physically obstruct the fallopian tubes at the proximal (cornual) or distal ends. * **Loss of Cilia (B):** The inflammatory process destroys the delicate ciliated epithelium of the fallopian tubes. Since cilia are essential for transporting the ovum toward the uterus, their loss results in infertility or ectopic pregnancy. * **Loss of Peristalsis (C):** Chronic inflammation leads to transmural scarring and pelvic adhesions (peritubal adhesions). This stiffens the tubal wall and fixes the tube in place, impairing the normal peristaltic contractions required for gamete transport. **3. High-Yield Clinical Pearls for NEET-PG:** * **Most common cause of tubal factor infertility:** PID (specifically *Chlamydia trachomatis* due to its often silent, destructive nature). * **Fitz-Hugh-Curtis Syndrome:** A complication of PID involving perihepatitis ("violin-string" adhesions). * **Risk of Infertility:** The risk of tubal infertility increases with each episode of PID (approx. 12% after one episode, 25% after two, and 50% after three). * **Gold Standard Investigation:** Laparoscopy is the gold standard for diagnosing tubal patency and pelvic adhesions in chronic PID.

Q: With Intracytoplasmic sperm injection (ICSI), which of the following steps in fertilization is skipped?

Acrosome reaction. **Explanation:** In **Intracytoplasmic Sperm Injection (ICSI)**, a single viable sperm is directly injected into the cytoplasm of a mature oocyte (MII stage) using a micropipette. This procedure bypasses the natural barriers of the egg. **Why Acrosome Reaction is the correct answer:** The **acrosome reaction** is a physiological process where the sperm releases enzymes (like hyaluronidase and acrosin) to penetrate the *zona pellucida*. Since ICSI involves mechanical insertion of the sperm directly into the ooplasm, the sperm does not need to penetrate the zona pellucida or the oocyte membrane on its own. Therefore, the acrosome reaction is bypassed/skipped. **Analysis of Incorrect Options:** * **A. Sperm-oocyte binding:** While the physical "binding" to the zona is bypassed, the question specifically targets the physiological biochemical reactions. However, the acrosome reaction is the most definitive "skipped" step in the sequence of fertilization events. * **B & D. Zona and Cortical reactions:** These reactions occur *after* a sperm enters the egg to prevent polyspermy (hardening of the zona). Even in ICSI, once the sperm is injected, the oocyte undergoes activation, which includes the cortical reaction to complete the second meiotic division. **High-Yield NEET-PG Pearls:** * **Indications for ICSI:** Severe male factor infertility (oligozoospermia, asthenozoospermia), obstructive azoospermia (PESA/TESA), and previous IVF failure. * **Oocyte Stage:** ICSI is performed only on **Metaphase II (MII)** oocytes (identified by the presence of the first polar body). * **Success Rate:** Fertilization rates with ICSI are approximately 70-80%. * **Key Difference:** IVF requires thousands of motile sperm; ICSI requires only one viable sperm per egg.

Q: Which form of infertility in women has the best prognosis and is most reversible?

Anovulation. **Explanation:** **Anovulation** is considered the most treatable and reversible cause of female infertility, carrying the best prognosis. This is because the underlying issue—the failure to release an oocyte—can often be corrected through medical intervention. With the use of **Ovulation Induction (OI)** agents such as Clomiphene Citrate (the traditional first-line) or Letrozole (now preferred in PCOS), successful ovulation can be achieved in up to 70-80% of patients, leading to high cumulative pregnancy rates. **Analysis of Incorrect Options:** * **Tubal Block:** This represents structural damage. While surgical tuboplasty exists, success rates are low, and the risk of ectopic pregnancy is high. Most cases require expensive assisted reproductive technologies (ART) like IVF. * **Oligospermia:** This is a cause of *male* factor infertility. While treatable via IUI or ICSI, it does not address female fertility prognosis and often requires long-term management. * **Endometritis:** Chronic inflammation of the uterine lining impairs implantation. While treatable with antibiotics, it can lead to permanent synechiae (Asherman syndrome) or irreversible damage to the receptive environment of the uterus. **High-Yield Clinical Pearls for NEET-PG:** * **WHO Group II (PCOS)** is the most common cause of anovulatory infertility. * **Letrozole** (Aromatase Inhibitor) is currently the **drug of choice** for ovulation induction in PCOS due to higher live birth rates and lower risks of multiple gestations compared to Clomiphene. * In patients with **Hypogonadotropic Hypogonadism (WHO Group I)**, the treatment of choice is pulsatile GnRH or Gonadotropins.

Q: Subfertility is most likely seen in which of the following conditions?

Submucosal leiomyoma. **Explanation:** The relationship between uterine leiomyomas (fibroids) and subfertility depends primarily on their **location** rather than their size. **Why Submucosal Leiomyoma is the Correct Answer:** Submucosal fibroids (FIGO Types 0, 1, and 2) are the most significant contributors to subfertility. They distort the endometrial cavity, leading to: 1. **Impaired Implantation:** Alteration of the endometrial receptivity and local inflammatory changes. 2. **Mechanical Obstruction:** Potential blockage of the tubal ostia. 3. **Abnormal Contractility:** Interference with the rhythmic uterine contractions required for sperm transport. Surgical removal (Myomectomy) of submucosal fibroids is clinically proven to significantly improve pregnancy and live birth rates. **Analysis of Incorrect Options:** * **Pedunculated & Subserosal Leiomyomas:** These grow toward the serosal surface (outer layer) of the uterus. Since they do not distort the endometrial cavity or affect the lining where implantation occurs, they generally have **no impact** on fertility. * **Cervical Leiomyoma:** While these can rarely cause dyspareunia or mechanical obstruction of the cervical canal, they are far less common and less frequently associated with primary subfertility compared to submucosal types. **High-Yield Clinical Pearls for NEET-PG:** * **FIGO Classification:** Submucosal fibroids are FIGO 0, 1, and 2. Intramural fibroids (>50% in the wall) are FIGO 3 and 4. * **Intramural Fibroids:** These may decrease fertility if they are large (>4 cm) or distort the cavity, but submucosal fibroids carry the highest risk. * **Best Imaging:** Transvaginal Ultrasound (TVS) is the initial investigation; **Saline Infusion Sonohysterography (SIS)** is the gold standard for diagnosing cavity distortion. * **Treatment of Choice for Infertility:** Hysteroscopic Myomectomy for submucosal fibroids.

Q: In vitro fertilization is indicated in which of the following conditions?

Tubal pathology. **Explanation:** **In Vitro Fertilization (IVF)** is a technique where fertilization occurs outside the body. The primary medical concept behind IVF is to bypass the fallopian tubes. Therefore, **Tubal pathology** (e.g., bilateral tubal block, hydrosalpinx, or post-salpingectomy) is the classic and most common indication for IVF. Since the natural site of fertilization (the ampulla of the tube) is non-functional, the egg and sperm are united in a lab setting, and the resulting embryo is transferred directly into the uterus. **Analysis of Incorrect Options:** * **Uterine dysfunction:** IVF requires a functional uterus for embryo implantation. If the uterus is absent or severely dysfunctional (e.g., Asherman syndrome or severe adenomyosis), IVF alone will not result in pregnancy; surrogacy or uterine transplant would be required. * **Ovarian pathology:** While IVF can be used in cases of diminished ovarian reserve, "ovarian pathology" is a broad term. If the ovaries cannot produce viable oocytes, IVF cannot be performed unless donor eggs are used. * **Azoospermia:** For obstructive or non-obstructive azoospermia, the treatment of choice is **ICSI (Intracytoplasmic Sperm Injection)** rather than conventional IVF. In ICSI, a single sperm is injected directly into the oocyte, which is necessary when sperm counts are zero or extremely low. **High-Yield Clinical Pearls for NEET-PG:** * **First IVF baby:** Louise Brown (1978); in India: Kanupriya Agarwal (Durga). * **Indications for IVF:** Bilateral tubal block (Gold Standard), unexplained infertility, failed IUI, and severe endometriosis. * **Indications for ICSI:** Severe male factor infertility (Azoospermia, severe oligospermia) and previous IVF failure. * **Step-wise IVF process:** Controlled ovarian hyperstimulation → Trigger (hCG/GnRH agonist) → Oocyte retrieval (34–36 hours post-trigger) → Fertilization → Embryo transfer (Day 3 or Day 5/Blastocyst).

Q: In cases of recurrent abortions, what is the most common uterine malformation seen?

Mullerian fusion defects. **Explanation:** **1. Why Mullerian Fusion Defects are Correct:** Mullerian duct anomalies (MDAs) are a significant cause of recurrent pregnancy loss (RPL). Among these, **Mullerian fusion defects** (specifically the **Septate uterus** and **Bicornuate uterus**) are the most frequently encountered malformations in clinical practice. * **Septate Uterus:** This is the most common anomaly associated with recurrent abortions. The septum is composed of fibroelastic tissue with poor vascularization; when an embryo implants on the septum, it fails to receive adequate blood supply, leading to early pregnancy loss. * **Bicornuate Uterus:** This results from partial non-fusion of the Mullerian ducts, leading to a reduced uterine cavity volume and cervical insufficiency, often causing second-trimester losses. **2. Why Other Options are Incorrect:** * **Uterine Syncytium:** This is a physiological term related to the structure of the myometrium or placental trophoblasts; it is not a structural malformation. * **Unicornuate Uterus:** This is a **Mullerian agenesis/lateral fusion defect** (failure of one duct to develop). While it is associated with poor obstetric outcomes, it is statistically less common than fusion defects like septate or bicornuate uteri. * **Uterine Agenesis (Mayer-Rokitansky-Küster-Hauser syndrome):** This involves the congenital absence of the uterus. Since pregnancy is impossible without a uterus, it cannot be a cause of "abortion." **3. High-Yield Clinical Pearls for NEET-PG:** * **Most common MDA overall:** Septate Uterus (also has the highest rate of reproductive failure). * **Best initial investigation:** Transvaginal Ultrasound (TVS) or HSG. * **Gold Standard for diagnosis:** Combined Laparoscopy and Hysteroscopy (to differentiate between Septate and Bicornuate). * **Treatment of choice for Septate Uterus:** Hysteroscopic Septal Resection. * **DES exposure** is associated with a **T-shaped uterus**.

Question 1

All of the following are causative factors for infertility in Pelvic Inflammatory Disease (PID) except?

Accepted Answer

Anovulation

Answer

Cornual block

Answer

Loss of cilia of the fallopian tubes

Answer

Loss of peristalsis of the fallopian tubes

Question 2

With Intracytoplasmic sperm injection (ICSI), which of the following steps in fertilization is skipped?

Accepted Answer

Acrosome reaction

Answer

Sperm-oocyte binding

Answer

Zona reaction

Answer

Cortical reaction

Question 3

Which form of infertility in women has the best prognosis and is most reversible?

Accepted Answer

Anovulation

Answer

Tubal block

Answer

Oligospermia

Answer

Endometritis

Question 4

Subfertility is most likely seen in which of the following conditions?

Accepted Answer

Submucosal leiomyoma

Answer

Pedunculated leiomyoma

Answer

Subserosal leiomyoma

Answer

Cervical leiomyoma

Question 5

Which of the following is a predisposing factor for developing ovarian hyperstimulation syndrome during in vitro fertilization procedures?

Accepted Answer

High serum estradiol

Answer

Transferring more than 2 embryos

Answer

Older maternal age

Answer

Prior polycystic ovaries

Question 6

In vitro fertilization is indicated in which of the following conditions?

Accepted Answer

Tubal pathology

Answer

Uterine dysfunction

Answer

Ovarian pathology

Answer

Azoospermia

Question 7

In cases of recurrent abortions, what is the most common uterine malformation seen?

Accepted Answer

Mullerian fusion defects

Answer

Uterine syncytium

Answer

Unicornuate uterus

Answer

Uterine agenesis

Question 8

Which of the following is NOT an indication for in vitro fertilization and implantation in the uterus?

Accepted Answer

Tubal block

Answer

Azoospermia

Answer

Anovulation

Answer

Oligospermia

Question 9

Best prognosis for reversibility is seen in which type of tubal blockage?

Accepted Answer

Isthmic type

Answer

Isthmic-ampullary type

Answer

Ampullary-interstitial type

Answer

Ampullary-timbrial type

Question 10

Which of the following is NOT a side effect of clomiphene citrate?

Accepted Answer

Teratogenic effects on offspring

Answer

Multiple pregnancy

Answer

Increased risk of ovarian cancer

Answer

Multiple polycystic ovaries

Fertility and Infertility — MCQs

Fertility and Infertility — MCQs

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