Correct Answer: D

Rationale: When a family decides to withhold 'extraordinary care' for a newborn with severe abnormalities, it means that aggressive interventions will not be pursued, allowing the newborn to die naturally. This decision is legal and ethical, respecting the principle of non-maleficence by avoiding unnecessary suffering. Choice A is incorrect because all individuals, including newborns, have rights, but the decision to withhold extraordinary care is based on ethical considerations. Choice B is incorrect as withholding care is not the same as euthanasia, which involves actively ending life. Choice C is incorrect as long as the decision is made within legal and ethical boundaries, it is not considered illegal professional practice.

Correct Answer: A

Rationale: The correct answer is A: Syndrome of inappropriate antidiuretic hormone (SIADH). Vasopressin is a medication used to treat diabetes insipidus by increasing water reabsorption in the kidneys. However, an excessive dose of vasopressin can lead to water retention, causing SIADH, which is characterized by dilutional hyponatremia. Choices B, C, and D are incorrect. Thyroid storm is a severe form of hyperthyroidism characterized by increased metabolism and can lead to life-threatening complications. Cushing syndrome results from excess cortisol production and is characterized by weight gain, hypertension, and other features. Vitamin D toxicity occurs due to an overdose of vitamin D, leading to hypercalcemia and symptoms such as nausea, vomiting, and weakness.

Correct Answer: A

Rationale: The priority nursing action after a tracheostomy surgery is to suction the tracheostomy tube. Suctioning helps maintain a clear airway and prevent complications such as airway obstruction or respiratory distress. While monitoring respiratory status is important, suctioning takes precedence immediately post-surgery to ensure adequate air exchange. Changing the tracheostomy dressing and ensuring tracheostomy ties are secure are also essential tasks but are secondary to the critical need for airway maintenance through suctioning.

Correct Answer: C

Rationale: Keeping the newborn warm is crucial immediately after clearing the airway to prevent hypothermia, which can lead to complications in newborns. Administering free-flow oxygen is not necessary if the newborn is not in distress. Clamping and cutting the cord can be done after ensuring the newborn's warmth. Obtaining an APGAR score is important but can be done after ensuring the newborn is kept warm and stable.

Correct Answer: D

Rationale: In congenital hypothyroidism, infants often experience lethargy and difficulty staying awake due to low thyroid hormone levels. Choice A is incorrect as hypothyroidism can lead to poor growth in infants. Choice B is incorrect because hypothyroidism can cause decreased activity levels and lethargy rather than being active and playful. Choice C is incorrect as hypothyroidism can result in dry skin and poor skin tone, not necessarily pink and healthy-looking skin.