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A nurse is preparing to administer an IV piggyback (IVPB) medication of Cefazolin 1 g in 100 mL Normal Saline over 30 minutes to a post-surgical patient. The gravity infusion set has a drop factor of 15 gtt/mL. At what drip rate should the nurse set the manual IV regulator?
A) 33 gtt/min
B) 50 gtt/min
C) 67 gtt/min
D) 100 gtt/min
CORRECT ANSWER: B) 50 gtt/min
RATIONALE: Formula: (Total Volume in mL / Time in minutes) * Drop Factor (gtt/mL) = Flow Rate (gtt/min). (100 mL / 30 min) * 15 gtt/mL = 3.33 * 15 = 50 gtt/min.
A healthcare provider orders Heparin 800 units/hr IV continuous infusion for a patient with deep vein thrombosis. The pharmacy supplies a bag labeled Heparin 25,000 units in 500 mL D5W. At what rate in mL/hr should the nurse set the IV smart pump?
A) 12 mL/hr
B) 16 mL/hr
C) 20 mL/hr
D) 25 mL/hr
CORRECT ANSWER: B) 16 mL/hr
RATIONALE: Formula: (Desired Dose / Available Dose) * Volume = (800 units/hr / 25,000 units) * 500 mL = 0.032 * 500 = 16 mL/hr.
CORRECT ANSWER: B) Discard the remaining 0.6 mL into the sink while another licensed nurse witnesses and documents the waste.
RATIONALE: Federal law and hospital policy require that any wasted portion of a controlled substance (Schedule II) must be witnessed and documented by two licensed nurses at the time of disposal.
CORRECT ANSWER: C) Stop flushing, aspirate for blood return, and if still occluded, remove the catheter and re-site.
RATIONALE: Forcing a flush against resistance can dislodge a clot into the venous circulation or rupture the vein. If gentle aspiration does not yield blood return and resistance persists, the line is occluded and must be replaced.
CORRECT ANSWER: B) Repeat the order verbatim back to the prescriber, obtain confirmation, and document 'read-back'.
RATIONALE: Verbal orders are permitted in urgent/emergent situations, but safety standards mandate a 'read-back' process where the nurse reads the complete order back to the prescriber to confirm accuracy before administration.
CORRECT ANSWER: B) 2 tsp
RATIONALE: Desired dose = 500 mg. Concentration = 250 mg / 5 mL, so 500 mg = 10 mL. Since 1 tsp = 5 mL, 10 mL equals 2 teaspoons.
CORRECT ANSWER: B) 7.0 mL
RATIONALE: Weight conversion: 33 lb / 2.2 = 15 kg. Total dose: 15 kg * 15 mg/kg = 225 mg. Volume: (225 mg / 160 mg) * 5 mL = 7.03125 mL. Standard clinical rounding for pediatric liquid doses yields 7.0 mL.
CORRECT ANSWER: C) Regular Insulin 6.0 U SubQ before meals
RATIONALE: Using trailing zeros (6.0 instead of 6) and the abbreviation 'U' (which can be misread as 0 or 4) violates ISMP standards. Trailing zeros can be misread as 60 if the decimal point is missed.
CORRECT ANSWER: B) 'I cannot crush this pill because it is designed to release slowly; crushing it could cause a sudden dangerous potassium spike.'
RATIONALE: Extended-release (ER, XL, SR) and enteric-coated (EC) formulations must never be crushed, chewed, or dissolved, as destroying the matrix causes rapid drug absorption ('dose dumping') leading to severe toxicity.
CORRECT ANSWER: B) Lower than the secondary container using the extension hook.
RATIONALE: To infuse a secondary IVPB via gravity, the secondary bag must hang higher than the primary bag. Hydrostatic pressure from the higher secondary bag keeps the primary line back-check valve closed until the secondary bag empties.
CORRECT ANSWER: C) 42 gtt/min
RATIONALE: Time in minutes = 8 hours * 60 = 480 min. Drip rate = (1000 mL / 480 min) * 20 gtt/mL = 2.083 * 20 = 41.67 -> 42 gtt/min.
CORRECT ANSWER: B) Respect the refusal, assess the patient's symptoms/vital signs, educate on risks, and notify the prescriber.
RATIONALE: Patients have the competent legal right to refuse treatment. The nurse must respect this right, assess the reason for refusal, provide education regarding potential consequences, document the refusal, and inform the healthcare provider.
CORRECT ANSWER: B) Immediately clamp the IV line near the patient access site and stop injecting.
RATIONALE: Precipitate formation indicates chemical incompatibility that can cause microemboli, line occlusion, or tissue vascular damage. The nurse must immediately stop the infusion, clamp the line, disconnect the drug, and replace contaminated tubing.
CORRECT ANSWER: B) Compare the medication label directly against the eMAR after retrieving and preparing the medication.
RATIONALE: The 3 checks of med administration are: (1) Upon initial retrieval from storage/drawer; (2) After retrieval/preparation, comparing label against the MAR/eMAR; (3) At the bedside right before administration.
CORRECT ANSWER: C) Immediately (within 30 minutes) prior to administering the next scheduled dose.
RATIONALE: Serum trough levels measure the lowest drug concentration in the bloodstream and must be drawn immediately (typically 30 minutes or less) before administering the next scheduled dose.
CORRECT ANSWER: D) 90 degrees
RATIONALE: For subcutaneous insulin injections, a 90-degree angle is used if 2 inches of tissue can be pinched (standard for short 5/16 inch needles in average to obese adults). A 45-degree angle is used if only 1 inch of tissue can be pinched.
CORRECT ANSWER: A) 2 mEq/hr
RATIONALE: Total dose = 20 mEq KCl over 10 hours. Rate per hour = 20 mEq / 10 hours = 2 mEq/hr.
CORRECT ANSWER: B) Scanning the patient's wristband, scanning each individual medication package at the bedside, and verifying matches on the eMAR screen.
RATIONALE: BCMA safety requires scanning the patient's wristband and each medication unit package directly at the bedside in real time to ensure the 'Right Patient' and 'Right Medication' system check.
CORRECT ANSWER: C) 200 mL/hr
RATIONALE: To find mL/hr for an infusion lasting less than an hour: (Volume in mL / Minutes) * 60 minutes = (50 mL / 15 min) * 60 = 3.333 * 60 = 200 mL/hr.
CORRECT ANSWER: C) Femoral vein
RATIONALE: CDC and evidence-based guidelines highlight that the femoral site has the highest risk of bacterial contamination and CRBSI due to proximity to the perineum and skin folds, and should be avoided in adults.
CORRECT ANSWER: B) Airway patency, respiratory rate, and oxygen saturation.
RATIONALE: In accordance with ABC priorities (Airway, Breathing, Circulation), airway patency and respiratory adequacy take absolute precedence over all other postoperative assessments following general anesthesia.
CORRECT ANSWER: B) Hypovolemic shock due to hemorrhage
RATIONALE: Tachycardia, hypotension, and sudden excessive frank bloody (sanguineous) output are classic manifestations of active hemorrhage leading to hypovolemic shock.
CORRECT ANSWER: C) The entire surgical team, including surgeon, anesthesia provider, circulating nurse, and scrub personnel.
RATIONALE: The Joint Commission Universal Protocol requires an active verbal 'Time-Out' involving the ENTIRE surgical team immediately before surgical incision to confirm correct patient, procedure, and site.
CORRECT ANSWER: C) Notify the operating surgeon that the patient requires further explanation before signing the informed consent.
RATIONALE: The surgeon/provider has the legal duty to explain the surgical procedure, risks, benefits, and alternatives. If the patient demonstrates a lack of understanding, the nurse must notify the surgeon prior to witnessing consent.
CORRECT ANSWER: B) Dantrolene sodium
RATIONALE: Malignant hyperthermia is a life-threatening pharmacogenetic metabolic emergency triggered by volatile inhalational anesthetics and succinylcholine. Dantrolene sodium is the specific skeletal muscle relaxant used to reverse it.
CORRECT ANSWER: B) Administer prescribed analgesic medication, show the patient how to splint the incision with a pillow, and then assist with spirometry.
RATIONALE: Pre-medicating for pain and teaching incisional splinting (holding a pillow firmly over the abdominal wound) minimizes pain during deep breathing and incentive spirometry, facilitating compliance and preventing atelectasis.
CORRECT ANSWER: B) Blood pressure drop from 120/78 to 86/50 mm Hg
RATIONALE: Spinal anesthesia blocks sympathetic vasomotor nerves, causing arterial and venous vasodilation leading to severe hypotension. This requires rapid intervention (IV fluid bolus, vasopressors, head flat/elevation of legs).
CORRECT ANSWER: C) The surgeon, anesthesiologist, patient/surrogate explicitly discuss and document whether the DNR order is temporarily suspended or modified during the perioperative period.
RATIONALE: Policy requires 'required reconsideration' where the surgical and anesthesia team discuss DNR/MOLST status with the patient/surrogate before surgery to clarify which specific life-sustaining measures are acceptable during anesthesia.
CORRECT ANSWER: C) 'I stopped drinking clear liquids like water 2 hours before my scheduled arrival time.'
RATIONALE: ASA guidelines allow clear liquids (water, fruit juice without pulp, clear tea) up to 2 hours before elective procedures. Heavy meals require 8 hours NPO; gum stimulates gastric acid secretion.
CORRECT ANSWER: B) Increasing localized erythema, warmth, and tenderness along the suture line
RATIONALE: Early localized SSI signs include progressive redness (erythema), localized heat, edema, and worsening focal tenderness along the incision line before gross purulence or systemic fever develops.
CORRECT ANSWER: C) Elevate the extremity, instruct the patient to remain on bed rest, and notify the healthcare provider.
RATIONALE: Suspected deep vein thrombosis (DVT) requires bed rest and notification of the provider. Massaging the leg or applying active SCD compression over an established clot can dislodge it, causing a fatal pulmonary embolism.
CORRECT ANSWER: C) Acute gallbladder removal for symptomatic cholecystitis
RATIONALE: Urgent surgeries must be performed within 24–48 hours to preserve patient health (e.g., acute cholecystitis, kidney stones). Ruptured aneurysm is Emergency (immediate); joint replacement is Elective.
CORRECT ANSWER: B) Assess arterial oxygen saturation with pulse oximetry to rule out hypoxia.
RATIONALE: Hypoxia is the most dangerous and common cause of postoperative agitation and emergence delirium in the PACU. Oxygenation must always be assessed first before assuming psychological delirium.
CORRECT ANSWER: C) Patient demonstrates ability to wiggle the toes and flex the ankles.
RATIONALE: Motor recovery following spinal anesthesia progresses from distal to proximal. Wiggling toes and flexing ankles (dorsiflexion) is the earliest objective indicator of motor block regression.
CORRECT ANSWER: A) 5 to 10 breaths every 1 to 2 hours
RATIONALE: Evidence-based postoperative respiratory protocols dictate that patients perform 5 to 10 sustained maximal inspirations using the incentive spirometer every 1 to 2 hours while awake.
CORRECT ANSWER: C) The individual named in the patient's Healthcare Proxy (Durable Power of Attorney for Healthcare)
RATIONALE: A Healthcare Proxy / Durable Power of Attorney for Healthcare legally designates a specific surrogate decision-maker who assumes authority only when the patient loses decision-making capacity.
CORRECT ANSWER: B) Cover the exposed bowel with sterile towels saturated with warm Normal Saline and call for immediate surgical intervention.
RATIONALE: Evisceration is a medical emergency. The nurse must cover protruding organs with sterile towels soaked in warm sterile 0.9% saline, place patient in low Fowler's with knees flexed, keep NPO, and notify surgery immediately.
CORRECT ANSWER: B) The patient maintains an open airway independently and responds purposefully to verbal/tactile commands.
RATIONALE: Moderate sedation depresses consciousness while allowing the patient to maintain a patent airway independently, retain protective airway reflexes, and respond purposefully to verbal or light tactile stimulation.
CORRECT ANSWER: B) Unreported patient use of herbal supplements St. John's Wort and Ginkgo Biloba
RATIONALE: Herbal supplements like Ginkgo Biloba increase bleeding risk, and St. John's Wort alters hepatic metabolism of anesthetic agents. Unreported herbals pose significant covert surgical risks.
CORRECT ANSWER: B) 6 to 8 hours
RATIONALE: Patients are expected to void spontaneously within 6 to 8 hours following surgery or removal of an indwelling urinary catheter. Failure to void within 8 hours warrants a bladder scan assessment.
CORRECT ANSWER: B) Bathing twice weekly using warm water, soapless pH-balanced cleanser, and applying emollient lotion immediately after.
RATIONALE: Frequent hot water baths and harsh soaps remove essential epidermal skin lipids. Using warm water, pH-balanced mild cleansers, limiting bath frequency, and applying emollients preserves fragile skin in older adults.
CORRECT ANSWER: C) Allow the CHG solution to air-dry completely on the skin without rinsing to maintain residual antimicrobial activity.
RATIONALE: CHG binds to skin proteins providing persistent microbial suppression. It must be allowed to air-dry and should NEVER be rinsed off. CHG should not be used on the face, eyes, or ears.
CORRECT ANSWER: B) Retract the foreskin gently, cleanse the glans from meatus outward, rinse, and immediately replace the foreskin back over the glans.
RATIONALE: Failure to return (replace) the retracted foreskin over the glans penis leads to severe venous congestion, edema, and localized tissue necrosis (paraphimosis).
CORRECT ANSWER: B) Wipe from the pubic arch back toward the anal area using a clean section of washcloth for each stroke.
RATIONALE: Cleansing from front to back (pubic arch to anus) prevents contamination of the clean urethral meatus with GI tract fecal bacteria (E. coli), reducing catheter-associated urinary tract infections.
CORRECT ANSWER: C) Side-lying (lateral) position with the head turned toward the mattress and bed flat/low
RATIONALE: Placing an unconscious patient in a lateral side-lying position allows fluid and oral secretions to drain out of the mouth by gravity rather than pooling in the pharynx and causing pulmonary aspiration.
CORRECT ANSWER: C) File nails straight across gently or consult a podiatrist for professional nail care.
RATIONALE: Diabetic patients with peripheral neuropathy have impaired healing and sensation. Nails should never be cut deep or rounded at corners; referral to a podiatrist is recommended to prevent accidental tissue injury.
CORRECT ANSWER: B) Meticulous oral hygiene with brushing twice daily and suctioning as needed
RATIONALE: Oral hygiene removes pathogenic oral plaque microflora. Without oral care, bacteria multiply rapidly and are aspirated into the lungs, making oral care a primary intervention against NV-HAP.
CORRECT ANSWER: B) Line the washbasin or sink with a washcloth/water cushion and scrub dentures using cool/lukewarm water and denture paste.
RATIONALE: Lining the sink with a cloth or water cushions prevents denture breakage if dropped. Boiling water or hot water warps denture plastic, and alcohol damages acrylic.
CORRECT ANSWER: C) Place soiled linens directly into a laundry bag without letting them touch the floor or uniform.
RATIONALE: Soiled linens carry microorganisms. Shaking spreads airborne microbes; holding them against clothing contaminates uniforms; placing them on the floor contaminates room surfaces.
CORRECT ANSWER: B) Stop the shower, calm the patient, adapt by offering a warm towel/towel bath while keeping the patient covered.
RATIONALE: Person-centered dementia care avoids forced bathing. Using towel baths, warm environment, keeping private areas covered, and adapting to patient comfort preserves dignity and reduces distress.
CORRECT ANSWER: B) Chemical skin breakdown caused by prolonged contact with ammonia and enzymes in stool and urine
RATIONALE: IAD (a type of MASD) is an inflammatory skin response caused by chemical irritation when skin is repeatedly exposed to moisture, alkaline urine, and digestive enzymes in liquid stool.
CORRECT ANSWER: B) Apply a warm, moist, sterile washcloth to loosen crusts, then wipe gently from inner canthus to outer canthus using a clean section of cloth for each stroke.
RATIONALE: Wiping from inner to outer canthus prevents pulling debris and microorganisms into the nasolacrimal duct. Warm moist compresses soften crusts without causing corneal abrasion.
CORRECT ANSWER: B) Remove the gown from the right (unaffected) arm first, then slide the left sleeve off over the IV site and IV container.
RATIONALE: Always undress the unaffected arm first, then slide the gown off the affected arm, threading the IV container and tubing through the sleeve from the inside out to avoid breaking line sterile integrity.
CORRECT ANSWER: B) 105°F to 110°F (40.5°C - 43.3°C)
RATIONALE: Safe bath water temperature for adult bed baths is 105°F to 110°F (40.5°C to 43.3°C) to prevent thermal skin injury, particularly in patients with altered thermal sensation.
CORRECT ANSWER: B) Instilling prescribed artificial tear drops or lubricating ointment and gently closing/patching eyelids if reflexes are absent.
RATIONALE: Loss of corneal blink reflex exposes the cornea to drying, ulceration, and permanent damage. Lubricating ointments/drops and soft eye closure protect corneal integrity.
CORRECT ANSWER: B) A 3- to 5-minute back massage (effleurage) using warm lotion
RATIONALE: Effleurage (long, gliding back strokes) during bedtime care promotes muscle relaxation, reduces anxiety, improves localized skin blood flow, and enhances sleep quality.
CORRECT ANSWER: B) 'Do not soak the feet; wash and dry them thoroughly, especially between the toes, to prevent tissue maceration.'
RATIONALE: Prolonged soaking causes skin maceration and epidermal breakdown. Lotion should be applied to the tops and soles of feet but NEVER between toes, as trapped moisture fosters fungal growth.
CORRECT ANSWER: B) To distribute natural cutaneous oils along the hair shaft and stimulate scalp blood circulation
RATIONALE: Daily brushing prevents tangling/matting, distributes natural scalp sebum along the hair shaft, and stimulates scalp microcirculation.
CORRECT ANSWER: B) Cleanse gentle with warm water and mild soap or normal saline, remove crusts, and avoid harsh chemicals like alcohol.
RATIONALE: Piercing sites should be cleaned with normal saline or mild soap/water. Harsh agents like alcohol or peroxide dry tissue and delay epithelialization.
CORRECT ANSWER: B) High Fowler's position (60 to 90 degrees)
RATIONALE: High Fowler's position prevents accidental aspiration of fluid or toothpaste and allows optimal movement during brushing and rinsing.
CORRECT ANSWER: C) Deep Tissue Pressure Injury (DTPI)
RATIONALE: DTPI presents as intact or nonintact skin with localized persistent nonblanchable deep red, maroon, or purple discoloration resulting from intense pressure/shear at the bone-muscle interface.
CORRECT ANSWER: B) Stage 2
RATIONALE: Stage 2 is partial-thickness skin loss with exposed dermis. The wound bed is viable, pink or red, moist, and may present as an intact or ruptured serum-filled blister.
CORRECT ANSWER: B) Stage 3
RATIONALE: Stage 3 is full-thickness skin loss where subcutaneous fat is visible in the ulcer, and granulation tissue and epibole are often present. Bone, muscle, tendon, ligament, or cartilage are NOT exposed.
CORRECT ANSWER: C) Stage 4
RATIONALE: Stage 4 pressure injury involves full-thickness skin and tissue loss with directly visible or palpable fascia, muscle, tendon, ligament, cartilage, or bone.
CORRECT ANSWER: C) Unstageable
RATIONALE: If slough or eschar completely obscures the base of a full-thickness tissue ulcer so that true anatomical depth cannot be determined, the wound is classified as Unstageable.
CORRECT ANSWER: C) Leave the dry intact eschar undisturbed as a natural protective biological cover.
RATIONALE: Current NPIAP guidelines specify that stable, dry, adherent, intact eschar on the heels or ischemic limbs without erythema or fluctuance should NOT be debrided or softened; it serves as the body's natural cover.
CORRECT ANSWER: C) High risk (Braden 10-12)
RATIONALE: Braden scale scoring interpretation: 15-18 = Mild Risk; 13-14 = Moderate Risk; 10-12 = High Risk; 9 or lower = Very High Risk.
CORRECT ANSWER: A) Serum Albumin 2.6 g/dL (Normal 3.5 - 5.0 g/dL)
RATIONALE: Hypoalbuminemia (< 3.2-3.5 g/dL) is a major biochemical marker for severe protein depletion, causing tissue edema and severely compromising tissue repair and pressure injury defense.
CORRECT ANSWER: B) 30 degrees
RATIONALE: Elevating the head of the bed above 30 degrees causes the body to slide downward, creating shearing forces that stretch and tear deep microvascular capillaries over the sacrum.
CORRECT ANSWER: B) Every 2 hours in bed; every 1 hour in chair
RATIONALE: Bedbound patients must be repositioned at least every 2 hours (q2h); chair-bound patients experience higher concentrated ischial pressure and must be repositioned or weight-shifted every 1 hour (q1h).
CORRECT ANSWER: B) Between the knees/ankles, behind the back, and under the upper arm
RATIONALE: Pillows tucked behind the back maintain the 30-degree tilt (avoiding direct pressure on the trochanter), while pillows between knees and ankles prevent bony prominence friction/pressure.
CORRECT ANSWER: B) They focus high ring pressure on surrounding tissue, causing venous congestion and localized ischemia in the center.
RATIONALE: Donut cushions compress surrounding blood vessels in a tight ring, restricting blood flow to the central tissue area and worsening tissue ischemia.
CORRECT ANSWER: B) Place a pillow lengthwise under the patient's lower legs (calves) so the heels hang freely in the air.
RATIONALE: Floating heels involves placing a pillow under the calves to elevate heels completely off the mattress surface, eliminating all localized heel pressure.
CORRECT ANSWER: B) Friction is mechanical rubbing of epidermis against a surface; shear is sliding of deeper tissue layers while surface skin remains fixed.
RATIONALE: Friction is a superficial force occurring when skin rubs against bedsheets (causing abrasion); shear occurs when skin remains fixed to sheets while skeletal structures slide, tearing deep blood vessels.
CORRECT ANSWER: B) Reactive hyperemia (blanchable erythema)
RATIONALE: Reactive hyperemia is a normal physiological blood flow rebound following temporary ischemia. It turns white (blanches) when pressed and resolves when pressure is relieved, unlike Stage 1 (nonblanchable).
CORRECT ANSWER: B) Accumulated moisture and elevated temperature at the skin-support surface interface soften stratum corneum, increasing vulnerability to shear and pressure.
RATIONALE: Microclimate refers to local temperature and humidity at the skin-mattress boundary. Excess heat and moisture (maceration) weaken skin resistance to pressure and shear.
CORRECT ANSWER: B) Sensory perception
RATIONALE: The 6 Braden Scale subscales are: Sensory Perception, Moisture, Activity, Mobility, Nutrition, and Friction & Shear.
CORRECT ANSWER: B) Cleanse promptly with pH-balanced no-rinse cleanser, apply moisture barrier cream, turn q2h, and place supportive pressure-redistribution mattress.
RATIONALE: Combining prompt hygienic moisture management, barrier protection, scheduled turning, and pressure-redistribution surfaces addresses both moisture and pressure etiology.
CORRECT ANSWER: B) Localized changes in skin temperature (warmth/coolness), tissue consistency (induration/firmness/bogginism), and localized pain
RATIONALE: In dark-skinned patients, erythema is difficult to detect visually. Nurses must palpate for localized heat or coolness, tissue firmness (induration) or softness (bogginism), and assess for localized pain.
CORRECT ANSWER: C) Advanced Air-fluidized or Low-air-loss dynamic mattress system
RATIONALE: Dynamic low-air-loss or air-fluidized therapy beds continuously redistribute body pressure and control skin microclimate moisture, indicated for severe stage 3/4 or unstageable pressure injuries.
CORRECT ANSWER: A) Primary intention
RATIONALE: Primary intention healing occurs in clean surgical wounds where wound edges are cleanly approximated with sutures, staples, or glue, resulting in minimal tissue loss and minimal scarring.
CORRECT ANSWER: B) Secondary intention
RATIONALE: Secondary intention occurs in wounds involving significant tissue loss (e.g., pressure ulcers, severe lacerations) where edges cannot be approximated. The wound heals by forming granulation tissue from the base upward.
CORRECT ANSWER: C) Tertiary intention (Delayed Primary Closure)
RATIONALE: Tertiary intention (delayed primary closure) occurs when a contaminated wound is left open deliberately for several days to allow infection/edema to subside, and then surgically closed.
CORRECT ANSWER: B) Influx of white blood cells (neutrophils and macrophages) to ingest bacteria and cellular debris
RATIONALE: The inflammatory phase is dominated by leukocyte and macrophage activity that cleanses the wound bed through phagocytosis and releases growth factors to signal repair.
CORRECT ANSWER: C) Granulation tissue
RATIONALE: Granulation tissue is healthy, highly vascular connective tissue that is pink or beefy red, moist, and bleeds easily, forming the foundation for wound healing during the proliferative phase.
CORRECT ANSWER: B) Serous
RATIONALE: Serous exudate is clear, watery fluid derived from the serous portion of blood serum.
CORRECT ANSWER: C) Serosanguineous
RATIONALE: Serosanguineous drainage is a pale, pink, watery mixture of clear serous fluid and red blood cells, commonly seen in surgical wounds.
CORRECT ANSWER: D) Purulent
RATIONALE: Purulent drainage is thick, opaque fluid containing dead white blood cells, cellular debris, and liquefied bacteria (pus), indicating infection.
CORRECT ANSWER: B) Cleanse yellow slough and absorb excess exudate.
RATIONALE: In the RYB color system: Red = Protect (granulation); Yellow = Cleanse (slough/exudate); Black = Debride (necrotic eschar).
CORRECT ANSWER: C) The flexible bulb is manually compressed flat before closing the port cap, creating continuous low negative pressure suction.
RATIONALE: JP drains (and Hemovacs) are closed suction systems that rely on manual compression of the bulb/reservoir to generate continuous gentle negative pressure.
CORRECT ANSWER: B) Verify that a sterile safety pin is inserted through the outer end of the drain to prevent it from slipping inside the wound.
RATIONALE: A Penrose drain is an open passive drain. A sterile safety pin is placed through the external end to prevent the soft rubber tube from retracting back into the wound cavity.
CORRECT ANSWER: B) By applying continuous localized subatmospheric pressure that draws wound edges together, removes exudate/edema, and stimulates granulation tissue growth.
RATIONALE: NPWT applies negative pressure via a foam dressing, removing interstitial fluid, reducing localized bacterial burden, pulling wound margins together, and promoting microvascular granulation.
CORRECT ANSWER: B) Presence of necrotic eschar in the wound bed, untreated osteomyelitis, or exposed major blood vessels
RATIONALE: NPWT is strictly contraindicated over necrotic tissue/eschar, untreated osteomyelitis, active bleeding, exposed organs/nerves/blood vessels, or malignant wounds.
CORRECT ANSWER: B) Cleanse directly down the center incision line (cleanest area) first, then wipe outward from least contaminated to most contaminated using a fresh swab for each stroke.
RATIONALE: Wound cleansing proceeds from least contaminated area (the incision itself) outward to most contaminated area (periwound skin), using a new sterile swab/gauze for every single stroke.
CORRECT ANSWER: B) Cleanse the wound thoroughly with sterile 0.9% Normal Saline to remove surface debris, then rotate the swab firm over clean, viable granulation tissue in a Z-pattern.
RATIONALE: Wound cultures must reflect actual tissue pathogens, not superficial colonizers. The nurse cleanses surface debris first with normal saline, then swabs viable granulation tissue.
CORRECT ANSWER: B) Maceration
RATIONALE: Maceration is tissue softening and epidermal disintegration caused by continuous exposure to moisture (wound exudate, urine, sweat), turning periwound skin white, soft, and fragile.
CORRECT ANSWER: B) To provide mechanical non-selective debridement of necrotic slough as the damp gauze dries and adheres to debris
RATIONALE: Wet-to-damp (or wet-to-dry) gauze dressings trap necrotic debris in the gauze mesh as it dries, mechanically debriding the wound bed upon removal.
CORRECT ANSWER: B) 4 to 15 psi
RATIONALE: Safe, effective wound irrigation requires 4 to 15 psi of pressure (achieved using a 35 mL syringe with a 19-gauge needle/catheter) to remove bacteria and debris without damaging fragile granulation tissue.
CORRECT ANSWER: A) Hypoxia and microvascular collagen deposition failure due to hyperglycemia and impaired leukocyte phagocytosis
RATIONALE: Hyperglycemia impairs neutrophil phagocytosis, alters small blood vessel circulation (microvascular disease), reduces oxygen delivery, and impairs collagen synthesis, markedly delaying healing.
CORRECT ANSWER: B) It forms an occlusive, moist environment that traps body's endogenous enzymes to naturally liquefy necrotic tissue.
RATIONALE: Hydrocolloid dressings are occlusive/semi-occlusive dressings that maintain a moist environment, allowing natural endogenous enzymes in wound fluid to break down necrotic tissue (autolytic debridement).