A 68-year-old man from Delhi presents with progressive lower urinary tract symptoms for 8 months. He reports nocturia 4–5 times per night, hesitancy, weak urinary stream, and terminal dribbling. He denies hematuria, fever, or weight loss. Digital rectal examination reveals a smooth, firm, symmetrically enlarged prostate without nodules. Post-void residual urine is 120 mL. Serum PSA is 2.8 ng/mL (normal). Urinalysis is normal. What is the most appropriate next step in management?

Explanation

## Clinical Diagnosis This patient has **symptomatic benign prostatic hyperplasia (BPH)** with moderate lower urinary tract symptoms (LUTS), elevated post-void residual (PVR 120 mL), and no evidence of malignancy (normal PSA, smooth DRE). ## Management Algorithm for Symptomatic BPH ```mermaid flowchart TD A[Symptomatic BPH diagnosed]:::outcome --> B{Severity of symptoms?}:::decision B -->|Mild LUTS| C[Watchful waiting + lifestyle modification]:::action B -->|Moderate-Severe LUTS| D[Medical therapy first-line]:::action D --> E{Obstruction present?}:::decision E -->|Mild obstruction, good flow| F[Alpha-blocker monotherapy]:::action E -->|Significant obstruction| G[Alpha-blocker + 5-alpha reductase inhibitor]:::action F --> H{Response adequate?}:::decision G --> H H -->|Yes| I[Continue medical therapy]:::action H -->|No, or complications| J[Consider TURP/other procedures]:::action J --> K[TURP indicated]:::outcome ``` ## Why Alpha-Blocker Is First-Line Here **Key Point:** Alpha-blockers (tamsulosin, alfuzosin, doxazosin) are the **first-line medical therapy** for symptomatic BPH because they: - Relax smooth muscle in the prostate and bladder neck - Provide rapid symptom relief (days to weeks) - Have no impact on prostate size - Are effective regardless of prostate volume **High-Yield:** This patient has **moderate symptoms** (nocturia 4–5×/night, hesitancy, weak stream) with **elevated PVR (120 mL)**, indicating **significant obstruction**. Medical therapy is the standard first-line approach before considering invasive procedures. ## Why Not the Other Options? | Option | Rationale | |--------|----------| | **Finasteride (5-alpha reductase inhibitor)** | Reserved for large prostates (>30 g) or when combined with alpha-blocker for severe obstruction; slower onset (3–6 months); not monotherapy for moderate symptoms. | | **TURP** | Indicated only after **failure of medical therapy**, recurrent UTIs, refractory retention, or refractory hematuria. This patient has not yet tried medical management. | | **Radical prostatectomy** | Absolutely contraindicated in BPH; reserved for prostate cancer. | **Clinical Pearl:** The combination of **moderate LUTS + elevated PVR + normal PSA + smooth DRE** is the classic presentation for medical therapy initiation. TURP is reserved for failures or complications. **Mnemonic: ALPHA-FIRST** — Alpha-blockers are First-line, Immediate relief, Rapid onset, Symptom-focused therapy for Hyperplasia.