Nursing Elites

1. A nurse is caring for an infant with intractable vomiting. For what complication is it most important for the nurse to assess?

• A. Acidosis
• B. Alkalosis
• C. Hyperkalemia
• D. Hypernatremia

Correct answer: B

Rationale: When an infant experiences intractable vomiting, it can lead to the loss of stomach acids, resulting in metabolic alkalosis. Alkalosis is characterized by elevated blood pH and can lead to serious complications. Assessing for alkalosis is essential in this scenario to monitor and manage the infant's condition. Choices A, C, and D are incorrect because in this context, the primary concern is the metabolic imbalance caused by excessive vomiting, leading to alkalosis rather than acidosis, hyperkalemia, or hypernatremia.

2. Which cardiac defects are associated with tetralogy of Fallot?

• A. Right ventricular hypertrophy, atrial and ventricular defects, and mitral valve stenosis
• B. Origin of the aorta from the right ventricle and of the pulmonary artery from the left ventricle
• C. Right ventricular hypertrophy, ventricular septal defect, pulmonic stenosis, and overriding aorta
• D. Altered connection between the pulmonary artery and the aorta, right ventricular hypertrophy, and an atrial septal defect

Correct answer: C

Rationale: Tetralogy of Fallot is characterized by a combination of four specific cardiac defects: right ventricular hypertrophy, ventricular septal defect, pulmonic stenosis, and overriding aorta. Choice A is incorrect as it includes mitral valve stenosis, which is not typically part of tetralogy of Fallot. Choice B describes transposition of the great arteries rather than tetralogy of Fallot. Choice D includes an atrial septal defect, which is not part of the classic presentation of tetralogy of Fallot.

3. A nurse is caring for an infant with a tentative diagnosis of hypertrophic pyloric stenosis (HPS). What is most important for the nurse to assess?

• A. Quality of the cry
• B. Signs of dehydration
• C. Coughing up feedings
• D. Characteristics of the stool

Correct answer: B

Rationale: The correct answer is B: Signs of dehydration. Infants with hypertrophic pyloric stenosis (HPS) are at high risk of dehydration due to frequent vomiting. Assessing for signs of dehydration, such as decreased urine output, dry mucous membranes, and sunken fontanelles, is crucial for early intervention and management. Choices A, C, and D are not the most critical assessments for HPS. The quality of the cry (choice A) may not provide as much relevant information in this case. Coughing up of feedings (choice C) may be a symptom but is not as crucial as assessing for dehydration. Characteristics of the stool (choice D) are important but assessing for signs of dehydration takes precedence due to the immediate risk it poses to the infant's health.

4. When assessing the perfusion status of a 2-year-old child with possible shock, which of the following parameters would be LEAST reliable?

• A. distal capillary refill
• B. systolic blood pressure
• C. skin color and temperature
• D. presence of peripheral pulses

Correct answer: B

Rationale: The correct answer is B: systolic blood pressure. In young children, systolic blood pressure is the least reliable parameter for assessing perfusion status. Factors such as anxiety, crying, and fear can significantly affect blood pressure measurements, leading to inaccuracies. Distal capillary refill, skin color and temperature, and presence of peripheral pulses are more reliable indicators of perfusion status in pediatric patients. Distal capillary refill assesses peripheral perfusion, skin color, and temperature reflect tissue perfusion, and the presence of peripheral pulses indicates blood flow to the extremities. Therefore, when evaluating a 2-year-old child with possible shock, focusing on parameters other than systolic blood pressure is crucial for an accurate assessment of perfusion status.

5. Which of the following techniques represents the most appropriate method of opening the airway of an infant with no suspected neck injury?

• A. lift up the chin and hyperextend the neck
• B. tilt the head back without hyperextending the neck
• C. gently lift the chin while maintaining slight flexion of the neck
• D. perform the technique as you would for an older child or adult

Correct answer: B

Rationale: The correct technique for opening the airway of an infant with no suspected neck injury is to tilt the head back without hyperextending the neck. This method helps to keep the airway open without risking injury to the infant's delicate neck structures. Choice A, lifting up the chin and hyperextending the neck, can potentially harm the infant's neck. Choice C, gently lifting the chin while maintaining slight flexion of the neck, is not as effective as tilting the head back. Choice D is incorrect as infants require a different approach compared to older children or adults due to their anatomical differences.

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