Correct Answer: A

Rationale: In ataxic cerebral palsy, the characteristic features include hypotonia (low muscle tone) and muscle instability. These manifestations contribute to the infant's difficulty in achieving independent sitting. Hypertonia (increased muscle tone) and persistence of primitive reflexes, as mentioned in option B, are more commonly associated with other types of cerebral palsy. Tremors and exaggerated posturing (option C) are not typical features of ataxic CP. Hemiplegia (paralysis of one side of the body) and hypertonia (increased muscle tone) mentioned in option D are more commonly seen in other types of cerebral palsy, such as spastic CP.

Correct Answer: C

Rationale: When a patient is prescribed verapamil and digoxin, it is crucial to monitor for signs of digoxin toxicity due to the potential interaction between these medications. Verapamil can elevate digoxin blood serum levels, increasing the risk of toxicity. Symptoms of digoxin toxicity include nausea, vomiting, and visual changes. Restricting intake of oral fluids and high-fiber foods is not a specific consideration related to this medication combination. Before administering digoxin, it is essential to take an apical pulse for a full minute, not just 30 seconds. Additionally, holding the medications if the heart rate exceeds 110 bpm is not a typical response to the combination of verapamil and digoxin, which can cause bradycardia rather than tachycardia.

Correct Answer: D

Rationale: The priority nursing diagnosis for a newborn with esophageal atresia and tracheoesophageal fistula is 'Risk for Aspiration' because of the potential respiratory complications associated with these conditions. The newborn is at a higher risk of aspirating oral or gastric contents due to the abnormal connections between the esophagus and trachea, posing a serious threat to the airway and lungs. Addressing this risk is crucial to prevent respiratory distress and maintain the airway's patency, making it the priority nursing diagnosis in this scenario.

Correct Answer: D

Rationale: An INR level of 1.2 is below the therapeutic range (2-3) for warfarin therapy. Therefore, the nurse should contact the healthcare provider to discuss the need for an increased dose to achieve the desired therapeutic range and prevent deep vein thrombosis effectively.

Correct Answer: D

Rationale: During a vaso-occlusive crisis in sickle cell anemia, maintaining bed rest is crucial to reduce oxygen consumption and alleviate pain. Movement can worsen the crisis by increasing sickling of red blood cells, leading to further tissue damage and pain. Bed rest helps to improve blood flow, reduce pain, and promote healing.