Chapter 28: Infection Prevention and Control Flashcards
Clinical Significance and Scope of Infection Control
Infection control forms a foundational pillar of patient safety, occupational safety, and public health.
Infection prevention interventions reduce clinical morbidity, lower mortality rates, and decrease healthcare costs.
Key statistical metrics and clinical risk factors include:
Infection Prevalence: hospitalized patients carries at least one health care-associated infection (HAI) at any given time.
Three Routes of Added Risk in Healthcare Settings:
Lowered host resistance due to acute or chronic illness.
Heavier exposure to virulent pathogens within healthcare environments.
Ingestion or insertion of invasive devices and procedures that bypass primary anatomical barriers.
Four Highest-Risk Anatomical Sites:
Urinary tract
Surgical sites
Bloodstream
Respiratory tract
Nursing Implications: Health care workers face continuous occupational risk through direct exposure to blood, body fluids, contaminated clinical equipment, and environmental surfaces.
Scientific Knowledge Base and Core Terminology
Infection: The invasion of susceptible host tissue by a pathogen, followed by multiplication of the pathogen and clinical tissue injury.
Colonization: The presence and multiplication of microorganisms within a host without causing tissue injury or an immune response.
Communicable Disease: An infectious process that can be transmitted directly or indirectly from one individual to another.
Symptomatic Infection: An infection in which the pathogen multiplies and produces observable clinical signs and symptoms.
Asymptomatic Infection: An infection in which the pathogen multiplies within the host without producing overt clinical signs or symptoms, though transmission may still occur.
Framework of Transmission: The Chain of Infection
An infection develops only when all six links in the chain of infection connect in an unbroken sequence. Interrupting any single link halts pathogen transmission.
The Six Links in the Chain:
Infectious Agent: The causative microorganism (bacteria, virus, fungus, or protozoa).
Reservoir: The environment or site where the pathogen survives, thrives, and multiplies.
Portal of Exit: The route by which the pathogen departs from the reservoir.
Mode of Transmission: The mechanism by which the pathogen moves from the reservoir to the host.
Portal of Entry: The route through which the pathogen enters the susceptible host.
Susceptible Host: An individual whose immune status or defense barriers permit pathogen invasion and replication.
Microorganisms and Factors Influencing Infection
Chain Link 1: Infectious Agents
Bacteria: The most common cause of HAIs; classified as aerobic (requiring oxygen) or anaerobic (thriving without oxygen), and may be multidrug-resistant.
Viruses: Obligate intracellular pathogens requiring living tissue to replicate; examples include influenza, hepatitis viruses, HIV, and SARS-CoV-2.
Fungi: Yeasts and molds that frequently act as opportunistic pathogens in immunocompromised hosts.
Protozoa: Single-celled parasites that are less common in acute care settings but remain clinically significant.
Pathogen Determinants of Infection:
Virulence: The inherent ability or potency of an organism to produce disease.
Number (Microbial Load): The total quantity of organisms introduced to the host.
Portal: Availability of a suitable route of entry.
Host Susceptibility: The intrinsic vulnerability of the host.
Chain Link 2: Reservoir Characteristics
Carriers: Individuals who harbor and shed a pathogen without exhibiting overt clinical signs of illness.
Healthcare Reservoirs: Moist surfaces, standing water, contaminated linens, respiratory equipment, and shared clinical devices.
Environmental Requirements for Pathogen Survival:
Food: Organic and inorganic nutrients.
Oxygen: Aerobic organisms require oxygen; anaerobic organisms require an oxygen-deprived environment.
Water: Most pathogens require moisture for cellular function.
Temperature: Optimal growth temperature for human pathogens ranges near .
pH: Most pathogens prefer a narrow pH range of
Light: Most pathogens thrive best in dark environments.
Nursing Actions to Disrupt Reservoirs: Promptly dispose of soiled items, maintain dry intact wound dressings, empty drainage containers according to schedule, and eliminate standing water at the bedside.
Chain Link 3: Portals of Exit
Skin & Mucous Membranes: Purulent exudate, open wound drainage, cutaneous lesions, or broken skin barrier.
Respiratory Tract: Droplets or aerosols produced during talking, coughing, sneezing, sputum expectoration, or endotracheal suctioning.
Genitourinary Tract: Urine and urethral discharge, especially in the presence of indwelling urinary catheters.
Gastrointestinal Tract: Saliva, emesis, feces, bile, and drainage from ostomies or nasogastric tubes.
Reproductive Tract: Semen and vaginal secretions.
Blood: Transmitted via open wounds, needle sticks, or vascular access insertion sites.
Chain Link 4: Modes of Transmission
Direct Contact: Physical person-to-person transfer between an infected source and a susceptible host.
Indirect Contact: Transmission via contaminated inanimate objects (fomites), such as surgical instruments, soiled dressings, stethoscopes, bed rails, or unwashed hands.
Droplet Transmission: Large respiratory droplets (>5{-}10\text{ \mu m}) that travel approximately through the air and settle rapidly onto surfaces.
Airborne Transmission: Evaporated droplet nuclei or dust particles (<5\text{ \mu m}) that remain suspended in the air for prolonged periods and drift on air currents.
Vehicle Transmission: Ingestion or exposure to contaminated water, pharmaceuticals, IV solutions, blood products, or food.
Vector Transmission: Transmission via biological or mechanical insects/animals, such as mosquitoes or ticks.
Chain Link 5: Portals of Entry
Organisms typically enter the host through the same routes used for exit.
Natural Portals: Non-intact skin, mucous membranes, respiratory tract, GI tract, or GU tract.
Iatrogenic Portals: Invasive medical devices, including urinary catheters, central venous access lines, peripheral IVs, surgical incisions, wound drains, and endotracheal tubes.
Nursing Maintenance: Keep skin intact, secure invasive lines to prevent micro-trauma, use strict aseptic technique during insertion and care, and evaluate line necessity daily for prompt removal.
Chain Link 6: Host Susceptibility
Age: Neonates and infants have immature immune systems; older adults experience immunosenescence.
Nutritional Status: Low dietary protein and reduced serum albumin impair antibody synthesis, phagocytosis, and wound healing.
Stress: Sustained physiological or psychological stress elevates cortisol levels, impairing lymphocyte response.
Disease Processes: Chronic conditions such as diabetes mellitus, malignancy, severe burns, renal failure, and chronic obstructive pulmonary disease impair host defense mechanisms.
Heredity: Genetic factors that alter individual immune function.
Medical Therapies: Immunosuppressants, systemic corticosteroids, antineoplastic agents, and broad-spectrum antibiotics (which eradicate normal protective flora).
Course and Stages of Infection
Comparison of Clinical Signs:
Localized Infection Signs: Localized pain or tenderness, localized erythema (redness), localized warmth, edema and induration, purulent or serosanguineous exudate, and functional loss of the affected part.
Systemic Infection Signs: Fever, chills, diaphoresis, generalized malaise, fatigue, anorexia, tachycardia, tachypnea, lymphadenopathy (enlarged lymph nodes), and altered mental status (confusion, which is often the primary presenting cue in older adults).
The Four Sequential Stages of Infection:
Incubation Period: The interval between pathogen entry into the body and the appearance of the very first clinical symptoms.
Prodromal Stage: The interval from the onset of non-specific, vague symptoms (e.g., low-grade fever, malaise) to the appearance of disease-specific signs. The patient is often most communicable during the prodromal stage before a definitive diagnosis is established.
Illness Stage: The phase during which clinical signs and symptoms specific to the infection are fully expressed.
Convalescence: The recovery period when acute symptoms resolve and tissue repair occurs; duration depends on infection severity and overall host health status.
Host Defenses and Inflammatory Mechanisms
Normal Body Defenses:
Normal Flora: Resident microorganisms colonizing skin, mouth, GI tract, and vagina that maintain balance and inhibit pathogen overgrowth through microbial antagonist competition.
Anatomical and Physiological Barriers:
Skin: Multilayered structure, protective sebum, and desquamation of outer epidermal cells.
Mouth: Intact mucosal barrier and salivary flow that mechanically flushes organisms.
Respiratory Tract: Ciliated epithelium, mucus blanket, and alveolar macrophages that trap and sweep pathogens out.
Urinary Tract: Hydrostatic flushing action of urine flow and intact epithelial lining.
Gastrointestinal Tract: Highly acidic gastric juices (), rapid peristalsis, and resident intestinal flora.
Vagina: Normal flora maintains an acidic pH that suppresses pathogenic bacterial and fungal growth.
Medication Implication: Administration of broad-spectrum antibiotics destroys non-pathogenic normal flora, disrupting microbial balance and permitting opportunistic superinfections (e.g., Clostridioides difficile or oral candidiasis).
The Inflammatory Response:
A protective vascular and cellular reaction to tissue injury or infection that isolates, neutralizes, and destroys pathogens while preparing the tissue for repair.
Stage 1: Vascular Response: Arterioles dilate and capillary permeability increases, leading to localized hyperemia, erythema, warmth, edema, and fluid accumulation that stimulates nerve endings (causing pain).
Stage 2: Cellular Response: Rapid influx of white blood cells to the injury site; neutrophils (first responders) and macrophages perform phagocytosis to engulf and digest cellular debris and pathogens.
Stage 3: Exudate Formation: Fluid, dead tissue cells, and WBCs form inflammatory exudate, categorized as:
Serous: Clear, watery plasma exudate.
Sanguineous: Exudate containing red blood cells.
Purulent: Thick exudate containing WBCs, tissue debris, and bacteria (pus).
Stage 4: Tissue Repair: Damaged parenchymal cells are replaced by cell regeneration or scar tissue formation.
Health Care-Associated Infections (HAIs)
Definition: Infections acquired by a patient during the process of receiving care in a health care facility that were not present or incubating at the time of admission.
HAI Categorization:
Exogenous HAI: Caused by pathogens originating outside the individual's body (e.g., from health care personnel, contaminated equipment, or the environment).
Endogenous HAI: Occurs when a portion of the patient's own normal flora becomes altered or translocated to an anatomical site where it is not normally found, often following broad-spectrum antibiotic therapy.
Iatrogenic HAI: A direct result of a diagnostic or therapeutic procedure (e.g., line insertion, mechanical ventilation, or surgical procedures).
High-Risk HAI Sites and Infection Control Protocols:
Urinary Tract (CAUTI - Catheter-Associated Urinary Tract Infection): Prevent by avoiding unnecessary catheterization, using strict sterile technique during insertion, maintaining a closed drainage system, and keeping the collection bag below bladder level.
Surgical Sites (SSI - Surgical Site Infection): Prevent by using sterile dressing changes, maintaining perioperative glycemic control, maintaining normothermia, and administering timely prophylactic antibiotics.
Bloodstream (CLABSI - Central Line-Associated Bloodstream Infection): Prevent by applying maximal sterile barrier precautions during insertion, performing thorough skin antisepsis with chlorhexidine, scrubbing catheter access hubs before use, and evaluating central line necessity daily.
Respiratory Tract (HAP/VAP - Hospital-Acquired / Ventilator-Associated Pneumonia): Prevent by providing regular oral hygiene with chlorhexidine, maintaining head-of-bed elevation at , encouraging early mobility, and utilizing incentive spirometry.
Epidemiological Warning: Multidrug-resistant organisms including MRSA, VRE, C. difficile, and multidrug-resistant gram-negative rods require strict Contact Precautions and dedicated bedside equipment.
Special C. difficile Requirement: Alcohol-based hand rubs do NOT kill C. difficile spores; hand hygiene MUST be performed using soap and water.
Nursing Process: Assessment and Clinical Cues
Systematic Risk Assessment:
Obtain health history: Review immunization status, recent travel, exposure history, chronic disease burden, and history of invasive procedures.
Review current therapies: Identify immunosuppressive regimens, chemotherapy, systemic steroids, broad-spectrum antimicrobial usage, and invasive lines.
Evaluate nutritional status: Monitor dietary protein intake, serum albumin levels, body weight trends, and appetite.
Monitor older adult presentation: Be alert for atypical presentations such as acute confusion, unexplained falls, or functional decline without a significant febrile response.
Diagnostic Laboratory Values and Clinical Indications:
White Blood Cell (WBC) Count: Normal reference range is . Elevated in acute infection; may be suppressed (leukopenia) in overwhelming sepsis or severe immunosuppression.
Neutrophils: Normal reference differential is . Increases significantly during acute, suppurative bacterial infections.
Lymphocytes: Normal reference differential is . Increases during chronic bacterial and viral infections.
Erythrocyte Sedimentation Rate (ESR): Normal up to in males and in females. Elevates in the presence of an active inflammatory process.
Diagnostic Cultures: Normal sterile-site cultures show no growth. Always obtain culture specimens prior to initiating the first dose of antimicrobial therapy whenever clinically feasible.
Nursing Process: Diagnosis, Planning, and Implementation
Nursing Diagnoses Related to Infection:
Risk for Infection: Due to invasive lines, skin breakdown, or immunosuppression.
Impaired Skin Integrity: Secondary to surgical incisions, pressure injuries, or exudate exposure.
Imbalanced Nutrition: Less Than Body Requirements: Secondary to poor intake, hindering antibody synthesis.
Risk for Social Isolation: Related to isolation precautions and room restrictions.
Deficient Knowledge: Regarding infection transmission routes and self-care precautions.
Planning & Outcome Identification:
Formulate measurable, patient-centered goals (e.g., "Patient's surgical wound will remain free of purulent drainage through discharge").
Prioritize clinical actions: Protect vulnerable hosts and preserve high-risk portals of entry first.
Interprofessional Collaboration: Coordinate care with infection preventionists, clinical pharmacists, environmental services, and medical providers.
Implementation & Health Promotion:
Immunization: Verify and update vaccination status for patients and clinical staff.
Nutritional Support: Ensure adequate dietary protein, total calories, fluid hydration, and key micronutrients (Vitamins C, A, and Zinc) to support immune function and tissue repair.
Rest & Stress Management: Promote restorative sleep and implement stress reduction measures to normalize immune response.
Hygiene Maintenance: Maintain skin integrity through regular bathing, moisture barriers, oral hygiene, and perineal care.
Infection Prevention Practice: Medical Asepsis and Hand Hygiene
Medical Asepsis (Clean Technique):
Practices designed to reduce the number and transfer of pathogens.
Wash hands thoroughly before and after every patient contact or procedure.
Keep soiled linens and contaminated equipment contained and held away from uniform; never place soiled linens on the floor.
Do not shake bed linens, as air currents disperse microorganisms across the room.
Clean clinical areas from the least contaminated site to the most contaminated site.
Discard liquid waste directly into designated drains or toilets, never into handwashing sinks.
Contain contaminated items in biohazard-labeled bags before removing them from patient rooms.
Hand Hygiene Principles:
Alcohol-Based Hand Rub: The primary method for routine decontamination when hands are not visibly soiled. Apply product to palm, cover all surfaces of hands and fingers, and rub vigorously until dry.
Soap and Water Washing (): Mandatory when hands are visibly soiled, after using the restroom, before eating, and after caring for patients with spore-forming organisms such as C. difficile.
The Five Moments for Hand Hygiene:
Before touching a patient.
Before performing a clean or aseptic procedure.
After body fluid exposure risk.
After touching a patient.
After touching a patient's immediate surroundings.
Spaulding Classification System for Medical Equipment:
Critical Items: Devices that enter sterile tissue or the vascular system (e.g., surgical instruments, cardiac catheters, implants). Requirement: Must undergo complete Sterilization (destruction of all microorganisms including spores).
Semicritical Items: Devices that contact intact mucous membranes or non-intact skin (e.g., endoscopes, respiratory therapy equipment). Requirement: Must undergo High-Level Disinfection (HLD).
Noncritical Items: Devices that contact intact skin only (e.g., blood pressure cuffs, stethoscopes, bed rails). Requirement: Cleaning followed by Low- to Intermediate-Level Disinfection.
Personal Protective Equipment (PPE) Donning and Doffing Procedures
Donning PPE Sequence (Before Room Entry):
Donning Mnemonic: Hi, Good Morning Granny Gloria!
Step 1: Perform Hand hygiene.
Step 2: Put on Gown; secure fully around torso, fastening ties at neck and waist.
Step 3: Put on Mask or respirator; secure ties or elastic bands, fit flexible nosepiece snugly to face bridge, and perform fit check.
Step 4: Put on Goggles or face shield; adjust over face and eyes.
Step 5: Put on Gloves; extend glove cuffs over the wrists of the gown.
Doffing PPE Sequence (At Doorway or Outside Room):
Doffing Mnemonic: Gloria Giggles Get Me Happy!
Step 1: Remove Gloves; peel off first glove inside-out, hold in remaining gloved hand, slip ungloved finger under remaining cuff, and roll inside-out into a bundle.
Step 2: Remove Goggles or face shield; handle by headband or earpieces without touching the front surface.
Step 3: Remove Gown; unfasten ties, peel gown away from neck and shoulders touching the inside only, turn inside-out, fold into a bundle, and discard.
Step 4: Remove Mask or respirator; untie bottom string first, then top string (or release bottom elastic), pull away from face without touching mask front.
Step 5: Perform Hand hygiene immediately after PPE removal.
Isolation Precautions: Standard and Transmission-Based Systems
Tier One: Standard Precautions
Applied to all patients in any health care setting, regardless of suspected or confirmed infection status.
Applies to: Blood, all body fluids, secretions, and excretions (except sweat), non-intact skin, and mucous membranes.
Key Practices: Hand hygiene, task-appropriate PPE (gloves, gown, mask, eye protection based on anticipated fluid exposure), respiratory hygiene/cough etiquette, safe injection practices (single-use needles/syringes, immediate sharps disposal), and surface environmental disinfection.
Tier Two: Transmission-Based Precautions
Added in addition to Standard Precautions for patients with known or suspected transmissible pathogens:
Contact Precautions:
Indications: MRSA, VRE, C. difficile, RSV, open/draining wound or enteric infections, COVID-19.
Barriers: Private room (or cohorting), gown and gloves worn by all personnel entering the room, dedicated non-critical patient care equipment.
Droplet Precautions:
Indications: Influenza, pertussis, mumps, rubella, meningococcal disease, Group A Streptococcus.
Barriers: Private room (or cohorting), surgical mask worn within of patient; patient wears surgical mask during transport.
Airborne Precautions:
Indications: Tuberculosis, measles (rubeola), varicella (chickenpox), disseminated herpes zoster, COVID-19.
Barriers: Airborne Infection Isolation Room (AIIR) with negative-pressure airflow (), door kept closed, fit-tested N95 respirator (or PAPR) worn prior to room entry; patient wears surgical mask during transport.
Protective Environment (Reverse Isolation):
Indications: Allogeneic stem cell transplant recipients, severely neutropenic oncology patients.
Barriers: Positive-pressure room with HEPA filtration (), strict room cleaning, exclusion of fresh dried/cut flowers, potted plants, and fresh unwashed fruits/vegetables.
Relational and Practical Aspects of Isolation:
Psychological Impact: Patients in isolation frequently experience sensory deprivation, feelings of rejection, anxiety, and depression. Explain the rationale for precautions, avoid rushed visits, and provide supportive touch through PPE.
Specimen Management: Place diagnostic specimens in leak-proof biohazard containers, double-bag if the exterior becomes contaminated, and label specimens at the bedside.
Surgical Asepsis and Sterile Field Management
Surgical Asepsis (Sterile Technique): Practices that eliminate all microorganisms, including spores, from an object or area.
Seven Core Principles of Surgical Asepsis:
A sterile object remains sterile only when touched by another sterile object.
Only sterile objects may be placed on a sterile field.
A sterile object or field out of the direct line of vision or held below waist level is considered contaminated.
A sterile object or field becomes contaminated by prolonged exposure to air; avoid talking, coughing, sneezing, or reaching over a sterile field.
When a sterile surface becomes wet, moisture moves through it by capillary action (strike-through), causing contamination from unsterile underlying surfaces.
Fluid flows in the direction of gravity; keep wet forceps tips pointing down, and wash hands keeping fingertips lower than elbows during surgical scrubs.
The () outer border of a sterile field or drape is considered unsterile and contaminated.
Sterile Field Preparation Steps:
Verify package integrity, check sterile expiration date, and confirm chemical sterilization indicators.
Place package on a clean, dry, flat surface above waist level.
Open the outermost flap away from the body first.
Open side flaps individually using left hand for left flap and right hand for right flap.
Open the innermost flap toward the body last, taking care not to touch or reach over the sterile interior contents.
Drop additional sterile supplies gently onto the center of the field from a height of , or transfer using sterile transfer forceps.
Surgical Hand Antisepsis:
Remove all arm and hand jewelry; inspect skin for cuts or abrasions.
Scrub under nails with a clean nail tool under running water.
Perform scrub using an antimicrobial agent from fingertips to elbows, maintaining hands elevated above elbows at all times so water drains off elbows.
Scrub all surfaces of fingers, hands, and arms for the specified time (typically ).
Dry thoroughly using a sterile towel, starting at the fingertips and moving toward the elbow without retracing.
Sterile Gloving Technique:
Open the outer glove package; lay inner glove wrapper flat on a clean surface above waist level.
Identify right and left gloves; open inner package touching only the outer margin.
With the dominant hand, grasp the inner folded cuff of the non-dominant glove with thumb and two fingers; pull glove onto non-dominant hand.
Slip gloved dominant fingers under the folded cuff of the second glove; pull glove onto dominant hand without touching bare skin.
Interlock gloved fingers and adjust fit; keep hands held comfortably above waist level and away from uniform.
Contamination Protocol: If contamination occurs at any step, stop immediately, discard contaminated items, and reglove using fresh sterile technique.
Patient Education and Staff Occupational Health
Patient and Caregiver Teaching:
Explain the purpose and importance of infection control practices using plain, understandable language.
Demonstrate techniques (such as handwashing, dressing changes, or line care) and require a return demonstration from the patient or caregiver.
Educate on early warning signs of infection: Fever, localized warmth, increasing pain, spreading erythema, purulent drainage, or functional decline.
Home Care Adaptation: Teach routine laundering with hot water, cleaning high-touch surfaces with household disinfectants, safe sharps disposal in puncture-resistant containers, and avoiding shared personal items.
Occupational Exposure Management Protocol:
Step 1: Immediate First Aid: Wash puncture wounds or lacerations immediately with soap and water. Flush exposed mucous membranes or eyes thoroughly with water or sterile saline for . Do not squeeze the wound or use caustic chemical agents.
Step 2: Immediate Reporting: Notify unit supervisor and employee health department immediately. Time-sensitive post-exposure prophylaxis (PEP) must be initiated rapidly.
Step 3: Source Identification & Evaluation: Test the source patient (with appropriate consent) and exposed worker for Hepatitis B Virus (HBV), Hepatitis C Virus (HCV), and Human Immunodeficiency Virus (HIV).
Step 4: Prophylaxis and Follow-Up: Administer Hepatitis B Immune Globulin (HBIG), Hepatitis B vaccine series, or antiretroviral PEP as indicated. Attend mandatory post-exposure counseling and serial baseline and follow-up lab testing.
Clinical Reasoning Application and Practice Questions
Bedside Case Scenario:
Case Stem: An older adult patient with an indwelling urinary catheter develops new-onset confusion overnight. Low-grade temperature is . Urine in the collection bag appears cloudy with sediment. Family confirms this mental status change is not baseline.
Clinical Reasoning Mapping (NCLEX Clinical Judgment Measurement Model):
Notice: Cloudiness of urine, low-grade temperature, and acute confusion in an older adult (atypical presentation of UTI).
Interpret: Active links in the chain of infection include an iatrogenic portal of entry (urinary catheter), reservoir (urinary bladder), and susceptible host (older adult).
Respond: Obtain an order for urine culture and sensitivity (drawn from catheter sampling port using sterile technique); evaluate catheter necessity for prompt removal; maintain closed drainage system.
Reflect: Assess whether CAUTI bundle interventions were consistently followed and plan preventive care.
NCLEX Practice Question 1:
Stem: The patient underwent a surgical procedure two days ago with Betadine used as surgical skin prep. The nurse's assessment indicates the incision is red with a small amount of purulent drainage and localized tenderness. The patient's temperature is and WBC count is . Which action should the nurse take first?
Options:
A) Check to see what solution was used for skin preparation in surgery.
B) Plan to change the surgical dressing during the shift.
C) Utilize SBAR to notify the primary health care provider.
D) Reevaluate the temperature and white blood cell count in 4 hours.
Correct Answer: C) Utilize SBAR to notify the primary health care provider.
Rationale: Clinical assessment reveals localized (redness, purulent drainage, tenderness) and systemic (fever, elevated WBC) cues of a surgical site infection. The primary provider must be notified promptly using SBAR to obtain diagnostic culture orders and antimicrobial therapy. Reevaluating in 4 hours delays needed care; dressing changes do not address the underlying infection source.
NCLEX Practice Question 2:
Stem: The nurse is caring for a school-aged child who injured the right leg in a bicycle accident. Which signs and symptoms will the nurse assess for to determine if the child is experiencing a localized inflammatory response?
Options:
A) Chest pain, shortness of breath, and nausea and vomiting
B) Dizziness and disorientation to time, date, and place
C) Edema, redness, tenderness, and loss of function
D) Malaise, anorexia, enlarged lymph nodes, and increased white blood cells
Correct Answer: C) Edema, redness, tenderness, and loss of function
Rationale: Localized inflammation produces swelling (edema), erythema (redness), heat, pain/tenderness, and functional loss in the affected body part. Option D represents systemic inflammatory responses. Option A indicates cardiac/respiratory distress, and Option B indicates neurological impairment.
NCLEX Practice Question 3:
Stem: The nurse is caring for a group of medical-surgical patients. Which patient is most at risk for developing an infection?
Options:
A) A patient who has been admitted for stabilization of heart problems
B) A patient who is recovering from a right total hip surgery
C) A patient who has been admitted with dehydration
D) A patient who is in observation for chest pain
Correct Answer: B) A patient who is recovering from a right total hip surgery
Rationale: The post-surgical patient has a major surgical incision, creating a significant disruption in skin integrity (portal of entry) and an invasive joint prosthesis, placing them at highest risk for infection. General medical patients without broken skin barriers have lower immediate risk.
NCLEX Practice Question 4:
Stem: The nurse receives a report that a patient with confirmed pulmonary tuberculosis will be admitted to the unit. Which items will the nurse need to care for this patient? (Select all that apply.)
Options:
A) Communication signs for droplet precautions
B) Negative-pressure airflow in room
C) Surgical mask, gown, gloves, eyewear
D) Private room
E) Communication signs for airborne precautions
F) N95 respirator, gown, gloves, eyewear
Correct Answers: B, D, E, F
Rationale: Tuberculosis is transmitted via small airborne droplet nuclei and requires Airborne Precautions. This necessitates a private room (D) with negative-pressure airflow (B), signage for airborne precautions (E), and personal protective equipment including a fit-tested N95 respirator, gown, gloves, and protective eyewear (F). Standard surgical masks and droplet signs are insufficient.
NCLEX Practice Question 5:
Stem: The nurse is providing an educational session for preschool workers about the most important action to prevent the spread of infection. Which information should the nurse share?
Options:
A) Encourage preschool children to eat a nutritious diet.
B) Wash their hands between each interaction with children.
C) Clean the toys every afternoon before putting them away.
D) Suggest that parents provide a multivitamin to the children.
Correct Answer: B) Wash their hands between each interaction with children.
Rationale: Hand hygiene is universally established as the single most effective measure to break the mode of transmission link in the chain of infection and prevent pathogen spread. Nutrition and toy disinfection are supportive measures but handwashing remains the primary intervention.