A nurse is caring for the following 4 children. Which child is at highest risk for developing lead poisoning?

Rationale:

A. Tachypnea and diaphoresis with feeding, poor weight gain, and irritability: Tachypnea and sweating during feeds indicate increased cardiac workload, poor weight gain reflects inadequate nutrition due to fatigue, and irritability can result from decreased perfusion and hypoxia. Caregivers should be able to identify these signs promptly.

B. Cough, edema, and irregular heart rate: While cough and edema may occur in older children or adults with heart failure, they are less specific in infants. Irregular heart rate can indicate arrhythmia but is not the most sensitive early marker of heart failure worsening in this age group.

C. Abdominal pain, poor appetite, and cough: Poor appetite may be present, but abdominal pain is not a typical early sign of infant heart failure. Cough is more often associated with respiratory infections rather than early heart failure.

D. Bradycardia, rapid weight gain, and irritability: Bradycardia is not an early sign of worsening heart failure in infants; it may indicate severe hypoxia or advanced decompensation. Rapid weight gain could suggest fluid retention, but in combination with bradycardia, it reflects a more severe state rather than an early warning.

Rationale:

A. "I will only garden when Millie is napping": While supervision during activities is important for toddler safety, gardening during her nap does not directly relate to developmental guidance. Safety strategies should focus on active supervision and safe play rather than timing chores around naps.

B. "I will buy a toy slide since Millie should already know how to climb steps without help": Encouraging physical activity and gross motor skills is important, but expecting a 2-year-old to climb steps independently may be premature. Introducing equipment like slides should be accompanied by supervision and recognition of age-appropriate skill development.

C. "I will limit Millie's milk to 2 cups per day": Limiting milk intake to 16 ounces daily aligns with recommendations for toddlers to prevent excessive calorie intake and ensure adequate iron absorption. This demonstrates understanding of nutritional guidance for a 2-year-old and supports balanced eating habits alongside table foods.

D. "I will give Millie a 5-minute timeout when she is being negative and saying no to everything": While timeouts can be part of behavior management, a 2-year-old’s negative behaviors and assertions of independence are developmentally typical. Using short, consistent discipline strategies is recommended.