Urology Practice Questions

Q: What is the first-line treatment for overactive bladder?

Behavioural therapy. **Explanation:** **Overactive Bladder (OAB)** is a clinical syndrome characterized by urinary urgency, usually accompanied by frequency and nocturia, with or without urgency urinary incontinence. **Why Behavioural Therapy is Correct:** According to the American Urological Association (AUA) and European Association of Urology (EAU) guidelines, **Behavioural Therapy is the first-line treatment** for OAB. It is non-invasive, has no systemic side effects, and is highly effective. It includes: * **Bladder training:** Scheduled voiding to increase bladder capacity. * **Pelvic floor muscle training (Kegel exercises):** To inhibit detrusor contractions. * **Lifestyle modifications:** Fluid management, caffeine reduction, and weight loss. **Analysis of Incorrect Options:** * **A. Antimuscarinic drugs (e.g., Oxybutynin, Tolterodine):** These are **second-line** treatments. They work by blocking M3 receptors on the detrusor muscle but are often limited by side effects like dry mouth, constipation, and blurred vision. * **C. Cholinergic drugs:** These (e.g., Bethanechol) stimulate bladder contraction and are used in urinary retention/hypotonic bladder, not OAB. OAB requires *anti*-cholinergics. * **D. Botulinum toxin type A:** This is a **third-line** treatment. It is reserved for patients refractory to behavioural and pharmacological therapies and is administered via intra-detrusor injection. **NEET-PG High-Yield Pearls:** * **Gold Standard Investigation:** Urodynamic study (shows detrusor overactivity). * **Mirabegron:** A $\beta_3$-adrenoceptor agonist, used as a second-line alternative to antimuscarinics (preferred in elderly to avoid cognitive side effects). * **Surgical Management:** Augmentation cystoplasty is the last resort for refractory cases.

Q: A 55-year-old smoker presents with a history of five episodes of macroscopic hematuria, each lasting for about 4-5 days over the past five years. Which of the following investigations should be performed to evaluate the suspected diagnosis?

Urine microscopy and cytology. **Explanation:** The clinical presentation of a 55-year-old smoker with recurrent episodes of painless macroscopic hematuria is highly suspicious for **Bladder Cancer (Urothelial Carcinoma)**. In any patient over 40 with painless hematuria, malignancy must be ruled out until proven otherwise. **Why Option A is correct:** **Urine cytology** is a critical initial screening tool for urothelial malignancy. It has high specificity (up to 95%) for detecting high-grade malignant cells shed into the urine. **Urine microscopy** is essential to confirm the presence of RBCs and rule out other causes like infection (pyuria) or glomerular disease (dysmorphic RBCs/casts). **Why other options are incorrect:** * **B. X-ray KUB:** Primarily used to detect radiopaque renal calculi. It has no role in diagnosing soft tissue bladder tumors. * **C. Ultrasound KUB:** While useful for screening the upper tract and identifying large bladder masses, it can miss small or flat (CIS) lesions. It is often an adjunct, but cytology is more specific for malignancy screening. * **D. DTPA Scan:** This is a nuclear medicine study used to assess the Glomerular Filtration Rate (GFR) and renal function/obstruction. It provides no diagnostic information regarding hematuria or malignancy. **Clinical Pearls for NEET-PG:** * **Gold Standard Investigation:** Cystoscopy is the definitive investigation for bladder cancer as it allows direct visualization and biopsy. * **Risk Factors:** Smoking is the most significant risk factor for bladder cancer (linked to β-naphthylamine). * **Imaging of Choice:** For staging and upper tract evaluation, **CT Urography** is the preferred modality. * **Classic Triad:** Painless, intermittent, macroscopic hematuria in an elderly smoker = Bladder Cancer.

Q: Which of the following statements about varicocele is false?

It is typically present in old age patients.. **Explanation:** **Why Option D is the Correct Answer (The False Statement):** Varicocele is primarily a condition of **young adults and adolescents**, typically appearing during puberty (ages 15–25). It is caused by the physiological increase in blood flow to the testes during this period. If a varicocele appears suddenly in an **elderly patient**, it is considered a "red flag." This often suggests a secondary cause, such as a **Renal Cell Carcinoma (RCC)** obstructing the renal vein or a retroperitoneal tumor causing venous compression. **Analysis of Other Options:** * **Option A (Left testis):** This is true. 90% of varicoceles occur on the left side due to anatomical reasons: the left spermatic vein is longer, enters the left renal vein at a **right angle**, and lacks effective valves, leading to higher hydrostatic pressure. * **Option B (Infertility):** This is true. Varicoceles are the most common reversible cause of male infertility. They cause stasis of blood, leading to **increased scrotal temperature** and reflux of adrenal metabolites, which impair spermatogenesis (decreased count and motility). * **Option C (Palomo procedure):** This is true. The Palomo procedure involves a **high ligation** of the spermatic veins (and often the artery) at the level of the internal inguinal ring. Other surgical options include the Ivanissevich (inguinal) and Marmar (sub-inguinal microsurgical) procedures. **High-Yield Clinical Pearls for NEET-PG:** * **Examination:** Characterized by a **"bag of worms"** feel on palpation. * **Grading:** Grade I (palpable only with Valsalva), Grade II (palpable standing), Grade III (visible through scrotal skin). * **Diagnosis:** Color Doppler Ultrasound is the gold standard investigation. * **Indication for Surgery:** Pain, testicular atrophy, or infertility with abnormal semen analysis.

Q: Which of the following is the most common urethral injury?

Rupture of bulbar urethra. **Explanation:** Urethral injuries are broadly classified into **Anterior** (distal to the urogenital diaphragm) and **Posterior** (proximal to the urogenital diaphragm). **Why Option A is Correct:** The **bulbar urethra** is the most common site of urethral injury overall. This is primarily due to its anatomical position; it is fixed beneath the pubic symphysis. The classic mechanism is a **"straddle injury"** (e.g., falling onto a bicycle crossbar or a manhole cover), where the bulbar urethra is crushed against the bony pubic arch. **Analysis of Incorrect Options:** * **Option B (Penile Urethra):** While susceptible to trauma from "penile fractures" or iatrogenic instrumentation, it is mobile and less frequently injured than the fixed bulbar segment. * **Option C (Prostatic Urethra):** This is the least common site of injury as the prostate provides significant structural protection. * **Option D (Membranous Urethra):** This is the most common site of **Posterior** urethral injury, typically associated with **pelvic fractures** (e.g., RTA). However, in the context of *all* urethral injuries, bulbar injuries occur more frequently. **High-Yield Clinical Pearls for NEET-PG:** 1. **Gold Standard Investigation:** Retrograde Urethrogram (RUG). Do not catheterize if a urethral injury is suspected. 2. **Classic Triad:** Blood at the meatus, inability to void, and a palpable distended bladder. 3. **Butterfly Hematoma:** Seen in bulbar urethral rupture when Buck’s fascia is breached, allowing extravasation into the perineum. 4. **High-Riding Prostate:** A hallmark sign of membranous (posterior) urethral disruption on Digital Rectal Examination (DRE).

Q: Following vasectomy for family planning, a patient should be advised to use some other method of contraception until what point?

Semen analysis confirms azoospermia. **Explanation:** Vasectomy is a permanent method of male sterilization involving the ligation and excision of a segment of the vas deferens. However, the procedure does not provide immediate contraception because viable spermatozoa remain stored in the **distal reproductive tract** (seminal vesicles and the segment of the vas deferens above the site of ligation). **Why Option D is Correct:** The patient is not considered sterile until these residual sperm are cleared. The gold standard for confirming success is a **semen analysis** showing **azoospermia** (zero sperm) or rare non-motile sperm. Relying on any other criteria poses a high risk of unintended pregnancy. **Why Other Options are Incorrect:** * **Options A & B:** Suture removal and pain resolution are markers of wound healing, not functional sterility. * **Option C:** Two weeks is insufficient. Clearance typically requires **12 to 20 ejaculations** or a duration of **3 months** post-procedure. **High-Yield Clinical Pearls for NEET-PG:** * **Timing of Test:** Semen analysis is usually performed **12 weeks** post-vasectomy. * **Failure Rate:** The failure rate is approximately 0.1% (1 in 1000), often due to spontaneous recanalization. * **Reversibility:** While vasovasostomy can restore patency, success rates decrease with time due to the development of **anti-sperm antibodies**. * **Complications:** The most common early complication is a **scrotal hematoma**; the most common late complication is a **sperm granuloma**. * **No Effect:** Vasectomy does not affect testosterone levels, libido, or the volume of ejaculate (as most fluid comes from the prostate and seminal vesicles).

Question 1

What is the first-line treatment for overactive bladder?

Accepted Answer

Behavioural therapy

Answer

Antimuscarinic drug

Answer

Cholinergic drug

Answer

Botulinum toxin type A

Question 2

A 55-year-old smoker presents with a history of five episodes of macroscopic hematuria, each lasting for about 4-5 days over the past five years. Which of the following investigations should be performed to evaluate the suspected diagnosis?

Accepted Answer

Urine microscopy and cytology

Answer

X-ray KUB

Answer

Ultrasound KUB

Answer

DTPA scan

Question 3

Which of the following statements about varicocele is false?

Accepted Answer

It is typically present in old age patients.

Answer

It is most common in the left testis.

Answer

It can cause infertility.

Answer

It can be treated by the palomo procedure.

Question 4

Which of the following is the most common urethral injury?

Accepted Answer

Rupture of bulbar urethra

Answer

Rupture of penile urethra

Answer

Rupture of prostatic urethra

Answer

Rupture of membranous urethra

Question 5

Following vasectomy for family planning, a patient should be advised to use some other method of contraception until what point?

Accepted Answer

Semen analysis confirms azoospermia

Answer

All sutures are removed

Answer

Pain completely subsides

Answer

Two weeks have passed

Urology — MCQs

Urology — MCQs

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