Source / episode info

• **Episode:**412
• **Title:**Divine Intervention Episode 412: USMLE Step 2/3 Rapid Review Series 82
• **Published:**2022-08-24
• Source:Episode page

One-liner

This episode provides rapid review on renal cell carcinoma (RCC) workup and associations, BPH pathophysiology and pharmacologic management, the risks and benefits of SGLT2 inhibitors in diabetes/heart failure, ICD indications for heart failure, and common causes of male infertility.

High-yield summary

• RCC Workup: If suspicious for RCC, perform a CT abdomen/pelvis with IV contrast; do not biopsy the kidney itself (whole organ removal is preferred).
• BPH Pathophysiology: Prostate growth is driven by Dihydrotestosterone (DHT), which is synthesized from testosterone via the enzyme 5--reductase.
• SGLT2 Inhibitors: These drugs block the SGLT2 transporter in the proximal convoluted tubule, leading to glucosuria. While beneficial for heart failure and weight loss, they increase the risk of UTIs and severe perineal infections like Fournier's Gangrene.
• ICD Indications (Heart Failure): Implantable Cardioverter Defibrillators are indicated if a patient has had a prior MI with an LVEF 30%, OR if they have Class II or III heart failure and an LVEF 35%.
• Cryptorchidism: Undescended testes significantly increase the lifetime risk of developing testicular cancer and are associated with infertility due to temperature requirements for spermatogenesis.

Learning objectives

• Differentiate the clinical presentation and workup of RCC versus other urological malignancies.
• Understand the pathophysiology, indications, and drug interactions associated with BPH management.
• Analyze the risks (e.g., Fournier's Gangrene) and benefits (HF survival) of SGLT2 inhibitors in diabetic patients.
• Identify the criteria for implantable cardioverter defibrillator placement in heart failure.
• Recognize the association between cryptorchidism, infertility, and testicular cancer risk.

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