Infection Control Scenarios | 마이메르시 MyMerci

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Infection Control Scenarios

NCLEX Review Guide: Next Generation NCLEX Infection Control Scenarios

Core Infection Control Principles

Standard and Transmission-Based Precautions

Standard precautions are used for ALL patients regardless of diagnosis and include hand hygiene, PPE when indicated, safe injection practices, and proper handling of contaminated equipment.
Contact precautions require private room, gown and gloves for all patient contact, and dedicated equipment for patients with MRSA, VRE, or C. difficile infections.
Droplet precautions need surgical mask within 3 feet of patient and private room for conditions like influenza, pertussis, and meningitis.
Airborne precautions require N95 respirator, negative pressure room, and door kept closed for tuberculosis, varicella, and measles.

Key Points

Hand hygiene is the MOST effective method to prevent healthcare-associated infections
PPE sequence: Don before entering room, Doff after leaving room
N95 fit testing is required annually and before first use

NGN Clinical Scenarios

Scenario 1: Multi-Drug Resistant Organism (MDRO)

Patient: 78-year-old with MRSA pneumonia, confused, pulling at IV lines

NGN Question Types: Matrix/Grid, Drag-and-Drop, Highlight

Appropriate vs. Inappropriate Actions

Appropriate	Inappropriate
Don gown and gloves before entering	Sharing equipment with other patients
Use dedicated stethoscope	Removing PPE inside patient room
Perform hand hygiene after PPE removal	Wearing same gown to multiple rooms

Scenario 2: Tuberculosis Exposure

Patient: 45-year-old with productive cough, night sweats, weight loss, pending TB test results

IMMEDIATE ACTION: Place in airborne isolation pending results

Place patient in negative pressure room immediately
Ensure N95 respirator fit-tested and properly worn
Keep room door closed at all times
Limit transport; if necessary, patient wears surgical mask
Notify infection control and public health authorities

Commonly Confused Concepts

Isolation Precautions Comparison

Type	PPE Required	Room	Examples
Contact	Gown + Gloves	Private preferred	MRSA, VRE, C. diff
Droplet	Surgical Mask	Private or cohort	Influenza, Pertussis
Airborne	N95 Respirator	Negative pressure	TB, Varicella, Measles

Memory Aid: PPE Donning Sequence

"Good Masks Need Gloves"

Gown → Mask/Respirator → Goggles/Face Shield → Gloves

Memory Aid: Airborne Diseases

"MTV" - Measles, Tuberculosis, Varicella (chickenpox)

NGN Question Strategies

Matrix/Grid Questions

Look for priority actions that address immediate safety concerns like airborne isolation for suspected TB.
Consider sequence of interventions - isolation precautions BEFORE diagnostic procedures.

Quick Check

Can you identify which precautions require N95 respirators? Do you know the correct PPE donning and doffing sequence? Can you differentiate between droplet and airborne transmission?

Common Pitfalls & Study Tips

Common Pitfalls

Confusing droplet vs. airborne precautions - remember distance matters for droplets (3 feet)
Forgetting that standard precautions apply to ALL patients, not just those with known infections
Mixing up PPE sequences - always don before entering, doff after leaving patient area

Study Strategy

Practice NGN scenarios using the clinical judgment measurement model: Recognize cues → Analyze cues → Prioritize hypotheses → Generate solutions → Take action → Evaluate outcomes

Self-Assessment Checklist

I can identify appropriate isolation precautions for specific conditions I understand proper PPE donning and doffing procedures I can prioritize infection control interventions in clinical scenarios I recognize when to notify infection control or public health

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