Half of pediatric assessment is knowing what "normal" looks like at each age: a heart rate of 140 is expected in an infant and alarming in a ten-year-old. These questions drill the age-based ranges for heart rate, respiratory rate, blood pressure and temperature, and — more importantly — the judgement of which abnormal reading needs action now.
Question 1
114 of 150. A 15-year-old who snorted crushed methylphenidate is pacing the examination room, shouting at staff, and exhibiting worsening psychomotor agitation. The heart rate is 130 bpm. Which initial intervention is most appropriate?
- A) Apply four point soft physical restraints.
- B) Request the parents to physically intervene.
- C) Reduce environmental noise and room lighting.✓
- D) Activate the emergency behavioral response team.
💡 Key Takeaway
Decreasing environmental stimuli is the safest initial approach for managing psychomotor agitation in stimulant toxicity.
Show rationale
When managing a patient with psychomotor agitation from stimulant abuse, reducing environmental stimuli is the safest and most effective first-line behavioral intervention to prevent further escalation. Applying physical restraints should be avoided if possible, as struggling against restraints drastically increases the risk of hyperthermia and rhabdomyolysis in stimulant toxicity. Requesting parents to physically intervene is dangerous and inappropriate. Activating an emergency behavioral response team might become necessary if the patient becomes violent, but introducing a large team immediately will likely worsen the patient's paranoia and agitation before simpler de-escalation techniques are attempted.
Question 2
134 of 150. A 15-year-old is admitted with fever, vomiting, and confusion. She has desquamation on her palms and soles, and her blood pressure is 85/50 mmHg. Based on the suspected diagnosis, which laboratory findings should the nurse practitioner anticipate?
- A) Elevated platelet count and a significantly decreased white blood cell count.
- B) Elevated serum creatinine and markedly increased hepatic transaminase enzyme levels.✓
- C) Decreased blood urea nitrogen and a completely normal coagulation profile panel.
- D) Decreased serum bilirubin and a significantly elevated red blood cell count.
💡 Key Takeaway
Toxic shock syndrome causes multi-organ dysfunction, typically presenting with elevated creatinine, transaminases, and thrombocytopenia.
Show rationale
Toxic shock syndrome is caused by a bacterial superantigen that triggers a massive, unregulated immune response, leading to capillary leak, profound hypotension, and subsequent multi-organ failure. Given that the patient's blood pressure is 85/50 mmHg alongside classic dermatologic signs, Option B is correct because impaired systemic perfusion and direct toxin effects typically cause acute kidney injury (elevated creatinine) and liver dysfunction (elevated transaminases). Option A is incorrect because this syndrome usually presents with thrombocytopenia due to consumption, not an elevated platelet count. Option C is incorrect as the blood urea nitrogen would be elevated due to poor renal perfusion, and coagulopathies are quite common. Option D is incorrect because multi-organ dysfunction often includes elevated, rather than decreased, bilirubin levels.
Question 3
142 of 150. A 15-year-old postoperative scoliosis repair patient on fentanyl PCA is found difficult to arouse and has a respiratory rate of 7 breaths per minute. The patient is receiving 2 liters of oxygen via nasal cannula with an SpO₂ of 96%. What is the priority action?
- A) Administer naloxone 0.1 mg/kg IV and discontinue PCA
- B) Administer naloxone 0.01 mg/kg IV and reduce PCA basal rate✓
- C) Stop the PCA, increase oxygen, and stimulate the patient
- D) Administer flumazenil 0.01 mg/kg IV over 15 seconds
💡 Key Takeaway
Low-dose naloxone reverses respiratory depression while partially preserving analgesia.
Show rationale
The patient has opioid-induced respiratory depression but maintains adequate oxygenation on supplemental oxygen, so complete reversal is not needed. Using a low-dose naloxone protocol (0.01 mg/kg) can improve respiratory rate and arousal while preserving some pain control after major spinal surgery. Option A delivers a full reversal dose, risking severe pain, hypertension, and withdrawal. Option C delays pharmacological reversal and may not resolve the opioid effect. Option D is inappropriate because flumazenil reverses benzodiazepines, not opioids. Guidelines for pediatric PCA recommend a cautious, titrated approach with low-dose naloxone to balance safety and comfort.
Question 4
16 of 150. A neonate in the NICU is receiving phototherapy for hyperbilirubinemia. The pulse oximeter on the right foot displays an erratic heart rate and wildly fluctuating oxygen saturations.
- A) Replace the current sensor with a larger size.
- B) Cover the oximeter sensor with an opaque shield.✓
- C) Temporarily discontinue the phototherapy during the oximetry readings.
- D) Switch the monitor to a different averaging mode.
💡 Key Takeaway
Ambient light from phototherapy can cause optical interference, which is resolved by shielding the sensor.
Show rationale
Intense ambient light from phototherapy can overwhelm the photodiode in the sensor, causing optical interference and erratic readings. Covering the sensor with an opaque material blocks the external light and restores accuracy. Replacing the sensor won't help if the new one remains exposed to the same light source. Stopping phototherapy interrupts necessary treatment and is not a practical solution for continuous monitoring. Changing the averaging mode simply delays the alarm but does not resolve the underlying light interference.
Question 5
58 of 150. An 18-year-old with a history of methamphetamine abuse reports acute substernal chest pressure alongside severe agitation and a heart rate of 140 bpm. What is the most important clinical focus for the nurse?
- A) Evaluate for signs of cardiac ischemia.✓
- B) Screen for underlying psychiatric panic disorder.
- C) Assess for acute gastrointestinal reflux disease.
- D) Monitor for impending respiratory muscle failure.
💡 Key Takeaway
Chest pressure in the context of methamphetamine abuse requires immediate assessment for acute cardiac ischemia.
Show rationale
Methamphetamine causes severe vasoconstriction, tachycardia, and hypertension, which drastically increases myocardial oxygen demand while simultaneously decreasing coronary artery perfusion. This combination puts even young patients at a high risk for acute myocardial ischemia or infarction. Therefore, evaluating for cardiac ischemia is the immediate life-saving priority. While the patient's agitation could mimic a panic disorder, and chest pressure could theoretically be gastrointestinal reflux, attributing these symptoms to non-cardiac causes without first ruling out ischemia is dangerous. Respiratory muscle failure is a risk in certain toxidromes but is not the primary mechanism associated with stimulant-induced chest pressure.
Question 6
78 of 150. A 10-year-old child receiving long-term parenteral nutrition is transitioning to a cycled 12-hour nocturnal infusion. The nurse assesses the patient two hours after the infusion stops. Which finding requires immediate intervention?
- A) Resting heart rate of seventy-five beats per minute
- B) Capillary blood glucose reading of fifty-five mg/dL✓
- C) Resting respiratory rate of twenty-two breaths per minute
- D) Capillary blood glucose reading of one hundred mg/dL
💡 Key Takeaway
Abrupt cessation of cycled parenteral nutrition can cause rebound hypoglycemia due to sustained endogenous insulin production.
Show rationale
Transitioning a child to cycled parenteral nutrition requires careful monitoring during the off-cycle to ensure metabolic stability. The correct answer is B because a glucose level of 55 mg/dL indicates rebound hypoglycemia. During the continuous infusion of high-dextrose solutions, the pancreas secretes high levels of insulin; when the infusion stops abruptly without an adequate tapering period, this sustained insulin quickly drops the blood sugar. Option A and Option C are incorrect because a heart rate of 75 and a respiratory rate of 22 are completely normal, expected vital signs for a resting ten-year-old child. Option D is incorrect because a blood glucose reading of 100 mg/dL is a perfectly normal, euglycemic value that demonstrates the child is tolerating the fasting period well. Immediate intervention with oral or intravenous glucose is required for the hypoglycemia.
Question 7
143 of 150. A mother who is pumping at work asks the nurse if she can save time by combining freshly expressed warm milk with chilled milk from her previous pumping session. Which guidance is correct?
- A) Store the combined milk container in the freezer immediately after mixing it.
- B) Discard the chilled milk because temperature fluctuations promote rapid bacterial growth.
- C) Keep the freshly pumped milk at room temperature until the shift concludes.
- D) Chill the freshly expressed milk completely before adding it to older milk.✓
💡 Key Takeaway
Freshly expressed warm breast milk must be chilled completely before being combined with previously refrigerated milk.
Show rationale
Adding warm freshly expressed milk directly to chilled milk raises the overall temperature of the storage container, which can promote bacterial growth. The safest practice is to chill the new milk completely before combining it with older batches, making Option D correct. Option A is incorrect because mixing warm and cold milk is unsafe regardless of whether it is subsequently frozen. Option B is unnecessary; the chilled milk is safe as long as warm milk hasn't been added to it. Option C is unsafe because fresh milk should be chilled as soon as possible if not being fed immediately.
Question 8
148 of 150. A 14-year-old post-spinal fusion is receiving morphine via patient-controlled analgesia. During rounds, the nurse notes the patient's respiratory rate is 10 breaths per minute. Which action is the most appropriate?
- A) Administer the prescribed intravenous naloxone dose right away.
- B) Attempt to rouse the adolescent using verbal stimuli.✓
- C) Decrease the basal rate on the analgesia pump.
- D) Apply supplemental oxygen via a non-rebreather face mask.
💡 Key Takeaway
Always assess sedation level and arousability first when a patient on opioid analgesia exhibits a low respiratory rate.
Show rationale
A respiratory rate of 10 in a sleeping adolescent on a PCA pump requires immediate assessment of arousability before assuming respiratory depression. If the patient rouses easily, the airway and respiratory drive are intact. Administering naloxone (A) is premature without assessing the sedation level and would cause severe pain. Decreasing the basal rate (C) requires a provider order and skips the assessment phase. Oxygen (D) does not address the underlying hypoventilation risk.
Question 9
20 of 150. A 15-month-old toddler is at a well-child visit. The family recently moved to an older rental home. The nurse practitioner discusses burn prevention. What is the best advice regarding the water supply?
- A) Lower the water heater thermostat to a maximum of 120 degrees.✓
- B) Lower the water heater thermostat to a maximum of 130 degrees.
- C) Install anti-scald mixing valves on all of the bathroom faucets.
- D) Install anti-scald mixing valves on all of the kitchen faucets.
💡 Key Takeaway
Setting the home water heater to a maximum of 120 degrees Fahrenheit is the primary prevention for tap water scalds.
Show rationale
The American Academy of Pediatrics recommends setting water heaters to a maximum of 120°F to prevent scald injuries, which is critical in an older rental home where default settings might be dangerously high. Setting the temperature to 130°F is too hot and can cause third-degree burns in seconds. While installing anti-scald mixing valves on bathroom or kitchen faucets provides secondary protection, adjusting the source temperature at the water heater is the most comprehensive and effective primary intervention for a toddler's environment.
Question 10
39 of 150. A 6-year-old with acute lymphoblastic leukemia and an ANC of 200/mm3 presents to the clinic with a temperature of 38.3°C (101°F). The child appears well and is playing actively. What is the most appropriate initial management?
- A) Administer prescribed antipyretics and recheck the patient's temperature.
- B) Obtain blood cultures prior to starting intravenous antibiotics.✓
- C) Initiate broad-spectrum intravenous antibiotics rapidly upon patient arrival.
- D) Perform a thorough physical assessment before any interventions.
💡 Key Takeaway
Blood cultures must be drawn before initiating broad-spectrum antibiotics in patients presenting with febrile neutropenia.
Show rationale
Febrile neutropenia is a recognized medical emergency requiring rapid, coordinated intervention. Although starting broad-spectrum antibiotics within 60 minutes of presentation is a critical benchmark, obtaining blood cultures first is the absolute priority. This ensures the specific pathogen can be identified before antimicrobial therapy alters the diagnostic results. The child's well appearance is highly deceptive; an ANC of 200/mm3 means they simply cannot mount a normal immune response to fight off sepsis. Option A is incorrect because it delays life-saving diagnostic and therapeutic treatment. Option C is the immediate next step but must follow culture collection to ensure targeted therapy later. Option D is necessary for overall care but should never delay cultures and antibiotics in a severely neutropenic patient presenting with a fever.
