Correct Answer: B

Rationale: The correct answer is to monitor for signs of dehydration. After treatment for dehydration, it is crucial to educate caregivers about recognizing early signs of dehydration to prevent its recurrence. Monitoring for dehydration ensures that appropriate measures can be taken promptly if signs reappear. Choices A, C, and D are incorrect because infection, hypovolemia, and malnutrition, while important considerations in healthcare, are not the primary focus after treating dehydration in a 3-year-old child.

Correct Answer: C

Rationale: A spiral fracture is characterized by a twisting injury, often indicating child abuse due to the mechanism involved. This type of fracture is commonly seen in non-accidental trauma cases. Plastic deformity is not typically seen on radiographs but refers to a change in the shape of a bone without breaking. Buckle fractures are incomplete fractures commonly seen in children due to their softer bones. Greenstick fractures are also incomplete fractures, but they do not typically raise suspicion of child abuse as spiral fractures do.

Correct Answer: A

Rationale: Checking blood glucose levels before meals and at bedtime is essential in managing type 1 diabetes mellitus as it helps in monitoring blood sugar levels at different times of the day and adjusting insulin doses accordingly. Option B about using a lancet device to obtain blood samples is a technique rather than an emphasis on monitoring frequency. Option C suggesting the use of urine test strips is incorrect as urine test strips are not recommended for accurate real-time monitoring of blood glucose levels in type 1 diabetes. Option D, recognizing signs of hypoglycemia, is important but not the primary emphasis when educating about blood glucose monitoring.

Correct Answer: A

Rationale: A heart rate below 100 beats/min in a newborn indicates the need for positive pressure ventilation to improve oxygenation. Providing positive pressure ventilations helps in assisting the newborn's breathing efforts to ensure adequate oxygenation. Choice B, providing blow-by oxygen, may not be sufficient to address the underlying issue of inadequate breathing. Choice C, assessing the newborn's skin condition and color, is important but not the most immediate action needed for a heart rate below 100 beats/min. Choice D, starting chest compressions, is not indicated as the infant is breathing spontaneously and has a heart rate, albeit lower than normal, which does not warrant chest compressions.

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.