Source / episode info
- **Episode:**183
- **Title:**Divine Intervention Episode 183 – Comprehensive NBME Emergency Medicine Shelf Review Series 3.
- **Published:**2019-11-07
- Source:Episode page
One-liner
This episode provides a massive review of infectious diseases, emphasizing differentiating tick-borne rashes (RMSF vs Lyme), managing severe bacterial infections like Anthrax and Plague, recognizing tropical viral syndromes (Zika/Dengue), and addressing critical care issues post-transplant.
High-yield summary
- Rocky Mountain Spotted Fever (RMSF): Rash classically starts on the palms and soles and spreads centrally; treat empirically with Doxycycline for all ages (except pregnant women, where Chloramphenicol is preferred).
- Lyme Disease: Stage 1 rash is erythema migrans (bullseye); use Doxycycline for general infection, but escalate to Ceftriaxone if there are cardiac or neurological manifestations.
- Anthrax: Associated with animal hides/wool; cutaneous form progresses from macule -> ulcer -> black eschar; treatment requires Ciprofloxacin + Meropenem (or other fluoroquinolone).
- Plague: Caused by Yersinia pestis; treat empirically with an Aminoglycoside (Gentamicin, Streptomycin) due to its unique combination of nephrotoxicity and ototoxicity.
- Zika Virus: Key association is congenital infection leading to microcephaly; also causes severe joint pain and conjunctivitis in adults.
- Typhoid Fever: Characterized by high fever, abdominal distension, and a "salmon-colored" rash (rose spots); treated effectively with fluoroquinolones or Ceftriaxone.
Learning objectives
- Differentiate the clinical presentation and appropriate treatment for major tick-borne illnesses (RMSF vs Lyme).
- Select the correct antibiotic regimen based on the pathogen's unique toxicity profile (e.g., Plague, Anthrax).
- Recognize the specific congenital risks associated with common arboviruses (Zika, Dengue).
- Manage acute complications in transplant recipients, particularly cardiac and GI issues.
- Apply knowledge of tropical disease epidemiology and management protocols.