Source / episode info
- **Episode:**277
- **Title:**Divine Intervention Episode 277 – USMLE Nov 2020 Changes Series 7: Infection Prevention and Control.
- **Published:**2020-12-04
- Source:Episode page
One-liner
This episode provides a comprehensive review of infection control principles, covering hand hygiene requirements for pathogens like C. difficile, the specific PPE and isolation measures for Contact, Droplet, and Airborne precautions (e.g., TB, COVID-19), best practices for central line insertion/maintenance, and management protocols for needle-stick injuries.
High-yield summary
- Hand Hygiene: For pathogens like Clostridioides difficile (C. diff), soap and water handwashing is mandatory; alcohol-based sanitizers are ineffective.
- Isolation Precautions: Airborne precautions (e.g., TB, COVID-19) require a respirator/N95 mask for the provider and negative pressure rooms when available. Contact isolation (e.g., MRSA, VRE, C. diff) requires gown and gloves. Droplet precautions (e.g., Influenza, Meningitis) require gowns and surgical masks.
- Central Line Care: Always clean the insertion site with chlorhexidine. Avoid placing central lines in the femoral vein due to high infection risk.
- Ventilator Management: Implement low tidal volume ventilation strategies (lung protective strategy). When possible, position ARDS patients in a prone position rather than supine.
- Antibiotic Prophylaxis: Administer IV cefazolin 30–60 minutes prior to surgery for routine prophylaxis.
- Needle-Stick Injury Management: If the healthcare worker is already immune (e.g., positive surface antibody test for HBV), no PEP is needed; otherwise, administer vaccine and immune globulin/antivirals immediately.
Learning objectives
- Differentiate between Contact, Droplet, and Airborne isolation precautions based on pathogen transmission routes.
- Identify appropriate hand hygiene methods for spore-forming organisms like C. difficile.
- Select the correct prophylactic antibiotic timing and agent for surgical procedures.
- Recognize high-risk sites for central line placement and necessary antiseptic skin preparation (Chlorhexidine).
- Outline the immediate management steps following a bloodborne pathogen exposure (HBV, HCV, HIV PEP).