Safety and Infection Control: Practice Questions & Explanations

Transmission-based precautions for NCLEX-PN: (1) AIRBORNE — for organisms transmitted by very small droplet nuclei suspended in air: TB, measles, varicella (chickenpox), disseminated zoster, COVID-19 in high-risk procedures, SARS, MERS. Requires: private NEGATIVE-PRESSURE room with door closed, N95 respirator (fit-tested) for all staff entering, client wears surgical mask when transported. (2) DROPLET — for larger droplets traveling shorter distances: influenza, pertussis (whooping cough), mumps, rubella, meningococcal infections, group A strep. Requires: private room (or cohort), surgical mask within 3-6 feet, client wears surgical mask when transported. (3) CONTACT — for direct or indirect contact with skin/wounds/surfaces: C. difficile, MRSA, VRE, scabies, RSV, hepatitis A in diapered patients. Requires: gown and gloves on entry, dedicated equipment, hand hygiene with soap and water for C. diff (alcohol-based sanitizer doesn't kill C. diff spores). Standard precautions apply to ALL clients regardless of diagnosis: hand hygiene, gloves when contacting body fluids, mask/eye protection if splashing risk. Memorize the categories and which organisms fit each — heavily tested on NCLEX.

Restraint use is heavily regulated due to patient safety, dignity, and legal concerns. CMS, Joint Commission, and state laws require strict protocols. Key principles: (1) LAST RESORT — only after less restrictive measures (reorientation, distraction, family presence, bed/chair alarms, environmental modifications, sitter) have failed; (2) ORDER REQUIRED — physician/APN order within specified timeframe (varies); cannot be PRN (as-needed) standing orders; must be specific (type, reason, duration); (3) LEAST RESTRICTIVE — use the minimum restraint needed (e.g., one-point first before four-point); (4) TIME-LIMITED — orders limited to specific timeframes: 4 hours for adults, 2 hours for ages 9-17, 1 hour for under 9; (5) MONITORING — check every 15-30 minutes; assess skin integrity, circulation, respiratory status, hydration, hygiene, ROM, behavioral status, need for continued restraint; (6) RELEASE — every 2 hours minimum for ROM, toileting, hydration, repositioning; (7) ATTACHMENT — to bed FRAME, not side rails (side rails can be raised/lowered, injuring the patient); quick-release knots; (8) DOCUMENTATION — type, time, reason, alternatives tried, checks, releases, removal criteria; (9) CONTINUOUS REASSESSMENT — discontinue ASAP when criteria for removal met. Chemical restraints (medications used to restrict movement, not for medical condition) are also regulated. Side rails as restraints: all four rails up = restraint; partial rails for mobility assistance = not restraint.

Fire safety in healthcare facilities uses the RACE acronym: R = RESCUE — clients in immediate danger first; move ambulatory clients first, then assistive clients, then non-ambulatory; A = ALARM — pull the nearest fire alarm, dial the facility emergency code, notify other staff; C = CONTAIN — close doors and windows to contain fire and smoke (a closed door significantly slows fire spread); E = EXTINGUISH (if small and safe) using the PASS technique for fire extinguishers, OR EVACUATE if fire is too large. PASS for fire extinguishers: P = Pull the pin, A = Aim at the base of the fire, S = Squeeze the handle, S = Sweep side to side. Extinguisher types: Class A (ordinary combustibles - paper, wood), Class B (flammable liquids - oil, gas), Class C (electrical), Class D (combustible metals), Class K (kitchen - cooking oils/fats); ABC extinguishers are most common in hospitals. Evacuation priority: ambulatory first (they can move themselves), wheelchair/assisted next, bedridden last (using sheets/blankets to slide them, evacuation chairs). Horizontal evacuation (to next fire compartment) before vertical (down stairs). Never use elevators during a fire.

Hand hygiene is THE single most effective infection prevention measure — repeatedly documented in research. WHO's 5 Moments of Hand Hygiene: (1) BEFORE touching a patient; (2) BEFORE clean/aseptic procedure; (3) AFTER body fluid exposure risk; (4) AFTER touching a patient; (5) AFTER touching patient surroundings. Method: (1) Soap and water for visibly soiled hands, after restroom, after contact with C. difficile or known spore-forming organisms, before eating; wet hands, soap, rub all surfaces 20 seconds (palms, backs, between fingers, fingertips, thumbs, wrists), rinse, dry with paper towel, turn off faucet with towel; (2) Alcohol-based sanitizer (60%+ alcohol) for non-visibly-soiled hands — apply enough to cover all surfaces, rub until dry (~20 seconds); FASTER and often MORE EFFECTIVE than soap/water for non-soiled hands, but NOT effective against C. diff, norovirus (use soap/water instead). Common errors: (1) Skipping moments (especially between patients in a shared room); (2) Inadequate technique (too brief, missing fingertips and thumbs); (3) Recontaminating after washing (touching dirty surfaces, using bare hand to turn off faucet); (4) Skipping when gloves are worn (gloves are NOT a substitute for hand hygiene — perform hand hygiene before donning and after removing gloves). Gloves: appropriate for body fluid risk but not always — overuse wastes resources and can paradoxically increase contamination if not changed between tasks. Sterile technique: only required for sterile procedures (urinary catheterization, central line dressing changes, surgery, etc.) — not for routine care. PPE escalates with transmission risk.

Medication errors are a leading cause of preventable harm in healthcare. The 'Rights of Medication Administration' (originally 5, expanded to 6-10 depending on source) provide a verification framework: (1) RIGHT PATIENT — two identifiers (name + DOB, name + MRN); never use room number; ask client to state name; check armband; (2) RIGHT MEDICATION — compare order, label, MAR (medication administration record); check three times: when removing from storage, when preparing, before administering; (3) RIGHT DOSE — verify calculation; high-alert medications (heparin, insulin, narcotics, chemo) require independent double-check; (4) RIGHT ROUTE — oral, IV, IM, SC, topical, inhaled, etc.; (5) RIGHT TIME — within 30 min of scheduled time generally; STAT immediately; PRN per orders; (6) RIGHT DOCUMENTATION — chart immediately after administration, not before; include time, route, site (for injectables), patient response; (7) RIGHT REASON — appropriate for client's condition; (8) RIGHT RESPONSE — assess for therapeutic and adverse effects; (9) RIGHT TO REFUSE — respect client autonomy; (10) RIGHT EDUCATION — client understands purpose, side effects, when to report problems. Additional safety checks: verify allergies before EVERY dose; check expiration dates; assess for contraindications (renal function, pregnancy, drug interactions); high-alert medications require special protocols; never crush extended-release or enteric-coated medications; verify NG/G-tube placement before instillation; flush tubes before/after meds. Common errors: wrong patient (failure to use 2 identifiers); look-alike/sound-alike medications; dose calculation errors; route confusion; timing of insulin/glucose-management drugs; failure to check labs (e.g., potassium before giving certain meds, INR before warfarin). When in doubt: STOP and verify. Never give a medication you're uncertain about.

TRANSMISSION-BASED PRECAUTIONS are used in addition to standard precautions for clients with known or suspected specific infectious diseases. THREE TYPES based on route of transmission: (1) CONTACT PRECAUTIONS: for diseases spread by direct or indirect contact (touching the patient or contaminated surfaces); examples: MRSA, C. difficile, VRE, wound infections, scabies, head lice; PPE: GLOVES and GOWN on entry; (2) DROPLET PRECAUTIONS: for diseases spread by large droplets (>5 microns) produced by talking, coughing, sneezing — travel ≤3 feet; examples: influenza, pertussis, meningococcal disease, group A strep, mumps, rubella; PPE: SURGICAL MASK on entry; private room or cohorting; (3) AIRBORNE PRECAUTIONS: for diseases spread by SMALL particles (<5 microns) that remain suspended in air and travel longer distances; examples: TUBERCULOSIS (TB), VARICELLA (chickenpox), MEASLES (rubeola), SARS, MERS, COVID-19 (enhanced); PPE: N95 RESPIRATOR (or higher, like PAPR) — must be fit-tested; NEGATIVE PRESSURE ROOM (AIIR — airborne infection isolation room) — air flows INTO the room (door kept closed) and is exhausted outside or HEPA filtered; door must remain closed; patient must wear surgical mask if transported through hallways. PN NURSING RESPONSIBILITIES: apply and remove PPE correctly (donning: gown, mask/respirator, eye protection, gloves; doffing: gloves, eye protection, gown, mask last); perform hand hygiene before and after; maintain isolation room requirements; educate the client about isolation; reinforce respiratory hygiene. DISTINGUISH: N95 RESPIRATOR (airborne — filters 95% of airborne particles; requires fit-testing) vs. SURGICAL MASK (droplet — larger particles; no fit-test required).

The 10 RIGHTS OF MEDICATION ADMINISTRATION provide a framework for safe drug administration. Asking the client to state their name and date of birth verifies the RIGHT CLIENT (also called right patient). THE 10 RIGHTS: (1) RIGHT CLIENT: verify identity using TWO identifiers per Joint Commission standard (name + date of birth; name + medical record number; name + ID band); never rely on room number alone; ask the client to state their name (don't say 'Are you Mr. Smith?' — the client may say yes even if wrong); (2) RIGHT MEDICATION: verify the drug label matches the order three times (when taking from storage, when preparing, before administering); (3) RIGHT DOSE: verify the dose matches the order; calculate if converting; (4) RIGHT ROUTE: oral, IV, IM, SubQ, topical, etc.; verify order matches the available form; (5) RIGHT TIME: verify frequency and when last dose was given; (6) RIGHT DOCUMENTATION: document AFTER administration (not before); (7) RIGHT REASON: does this medication make sense for this client's diagnosis? (pharmaceutical knowledge); (8) RIGHT RESPONSE: assess effectiveness after administration (pain medication: did pain improve?); monitor for adverse effects; (9) RIGHT EDUCATION: client understands what the medication is for and its common side effects; (10) RIGHT TO REFUSE: client has the right to refuse medication; document refusal, notify provider. ADDITIONAL SAFETY CHECKS: HIGH ALERT MEDICATIONS (insulin, heparin, anticoagulants, concentrated electrolytes, opioids) require INDEPENDENT DOUBLE-CHECKS by two nurses before administration at most facilities; LOOK-ALIKE/SOUND-ALIKE (LASA) medications are a common source of errors; storage separation and labeling help prevent LASA errors. TWO-IDENTIFIER requirement is from The Joint Commission National Patient Safety Goals.