A nurse is providing teaching to a client following surgery to repair a detached retina of the left eye. Which of the following instructions should the nurse include in the teaching?

Rationale:
A. After inflation, deflate a blood pressure cuff on the client's arm while palpating their brachial pulse: This technique assesses blood pressure, not pulse deficit. Pulse deficit requires comparing simultaneous heartbeats at different sites rather than using a cuff for measurement.

B. Compare the client's carotid pulse while resting to their carotid pulse after standing for 1 min: This evaluates orthostatic changes in heart rate, not pulse deficit. Pulse deficit specifically identifies a difference between apical and peripheral pulses during the same cardiac cycle.

C. Measure the client's apical pulse while another nurse measures their radial pulse: A pulse deficit is determined by counting the apical pulse and comparing it to the radial pulse simultaneously. A difference indicates that some heartbeats are not producing a palpable peripheral pulse, which is important in conditions like atrial fibrillation.

D. Assess both of the client's radial pulses at the same time and compare the quality of pulsations: Comparing radial pulses on both sides evaluates for peripheral pulse equality or arterial obstruction, not pulse deficit.

Rationale for Correct Choices

• Reye's syndrome: The toddler presents with acute onset of vomiting, lethargy, and altered mental status following a recent viral illness (influenza A). These are hallmark signs of Reye’s syndrome, a rare but serious condition causing hepatic and cerebral dysfunction in children.

• Aspirin administration: Use of aspirin during viral infections in children is strongly associated with the development of Reye’s syndrome. The guardians reported alternating aspirin with acetaminophen, directly increasing the toddler’s risk for this potentially life-threatening condition.

Rationale for Incorrect Choices

• Gastroenteritis: Gastroenteritis typically presents with diarrhea, abdominal cramping, and vomiting. While vomiting is present, the toddler also demonstrates lethargy and neurologic changes, which are not characteristic of routine gastroenteritis.

• Bronchitis: Bronchitis usually causes productive cough, wheezing, or respiratory distress. This toddler has a non-productive cough and clear lung sounds, making bronchitis an unlikely explanation for the current acute neurological and systemic symptoms.

• Oseltamivir administration: Oseltamivir is an antiviral used to treat influenza and is not associated with the development of Reye’s syndrome. The toddler’s severe symptoms are unrelated to this medication.

• Acetaminophen administration: Acetaminophen is generally safe in children at recommended doses. While it can cause liver toxicity in overdose, the scenario indicates appropriate use, making it an unlikely contributor to the toddler’s presentation.