PEARS - Pediatric Emergency Assessment, Recognition, and Stabilization Managing Shock Emergencies Questions and Answers 1 — Questions and Answers
Question 1: A 5-year-old child with a history of a severe peanut allergy is brought to the emergency department with urticaria, wheezing, and hypotension after accidentally ingesting a cookie containing peanuts. Which of the following is the most critical initial intervention?
- Administering an albuterol nebulizer treatment
- Establishing intravenous access for a fluid bolus
- Administering intramuscular epinephrine (Correct answer)
- Giving an oral dose of an antihistamine
Correct answer: Administering intramuscular epinephrine
In anaphylactic shock, the immediate priority is to administer intramuscular epinephrine. Epinephrine is a life-saving medication that counteracts the systemic effects of anaphylaxis by causing vasoconstriction, bronchodilation, and reducing inflammation. While other interventions like fluid resuscitation and bronchodilators are important, they are secondary to the administration of epinephrine.
Question 2: You are assessing a 2-year-old child with a 3-day history of vomiting and diarrhea. The child is tachycardic (HR 170/min), has cool extremities, and a capillary refill time of 4 seconds, but their blood pressure is within the normal range for their age. These findings are most consistent with which stage of shock?
- Septic shock
- Decompensated shock
- Cardiogenic shock
- Compensated shock (Correct answer)
Correct answer: Compensated shock
The child is exhibiting classic signs of shock, including tachycardia, cool extremities, and prolonged capillary refill. However, because the blood pressure is still normal, the body is successfully compensating for the fluid loss. This stage is known as compensated shock. Decompensated shock is characterized by hypotension, a late and ominous sign.
Question 3: What is the recommended initial isotonic crystalloid fluid bolus for a child in hypovolemic or septic shock?
- 5 mL/kg over 60 minutes
- 20 mL/kg over 5 to 20 minutes (Correct answer)
- 10 mL/kg over 30 minutes
- 30 mL/kg as fast as possible
Correct answer: 20 mL/kg over 5 to 20 minutes
According to AHA and septic shock guidelines, the standard initial fluid bolus for a child in most forms of shock (excluding cardiogenic) is 20 mL/kg of an isotonic crystalloid (like normal saline or Lactated Ringer's solution) administered over 5 to 20 minutes. This rapid infusion helps to quickly restore intravascular volume.
Question 4: A 6-month-old infant with a known congenital heart defect presents with signs of poor perfusion, including mottled skin, weak peripheral pulses, and lethargy. You also note crackles on lung auscultation and hepatomegaly. When managing this infant's suspected cardiogenic shock, which principle is most important?
- Administering a rapid 20 mL/kg fluid bolus to improve preload
- Prioritizing vasopressor therapy before any fluid administration
- Using smaller, more cautious fluid boluses (e.g., 5-10 mL/kg) while assessing for fluid overload (Correct answer)
- Immediately preparing for synchronized cardioversion
Correct answer: Using smaller, more cautious fluid boluses (e.g., 5-10 mL/kg) while assessing for fluid overload
In cardiogenic shock, the heart's pumping function is impaired. Aggressive fluid resuscitation can worsen pulmonary edema and cardiac failure. Therefore, fluid should be given judiciously in smaller boluses of 5 to 10 mL/kg over a longer period (10-20 minutes), with careful reassessment for signs of fluid overload, such as worsening crackles.
Question 5: Which of the following clinical signs is a definitive indicator that a child has progressed from compensated shock to decompensated (hypotensive) shock?
- Tachycardia
- Delayed capillary refill
- Hypotension (Correct answer)
- Altered mental status
Correct answer: Hypotension
Hypotension (low blood pressure) is the hallmark sign that differentiates decompensated shock from compensated shock. In compensated shock, the body maintains a normal blood pressure through mechanisms like tachycardia and vasoconstriction, even though tissue perfusion is impaired. When these mechanisms fail, blood pressure drops, signifying decompensated shock, which is a late and critical finding.
Question 6: A 7-year-old child is brought in after a traumatic injury with significant blood loss. The child is pale, tachycardic, and has weak distal pulses. Based on the cause, what is the most likely type of shock?
- Distributive
- Hypovolemic (Correct answer)
- Cardiogenic
- Obstructive
Correct answer: Hypovolemic
Hypovolemic shock is caused by a loss of intravascular volume. In this scenario, the significant blood loss from trauma directly leads to a decrease in circulating volume, resulting in hypovolemic shock. This is the most common type of shock in children, often caused by hemorrhage or dehydration from illnesses like gastroenteritis.
PEARS - Pediatric Emergency Assessment, Recognition, and Stabilization Managing Shock Emergencies Questions and Answers 1
A 5-year-old child with a history of a severe peanut allergy is brought to the emergency department with urticaria, wheezing, and hypotension after accidentally ingesting a cookie containing peanuts.
Which of the following is the most critical initial intervention?