Correct Answer: B

Rationale: The correct answer is B: Pulmonary stenosis, ventricular septal defect, overriding aorta, right ventricular hypertrophy. Tetralogy of Fallot involves these four congenital defects. Choice A is incorrect because it includes aortic stenosis instead of pulmonary stenosis, atrial septal defect instead of ventricular septal defect, and left ventricular hypertrophy instead of right ventricular hypertrophy. Choice C is incorrect as it includes aortic stenosis and atrial septal defect instead of pulmonary stenosis and ventricular septal defect. Choice D is incorrect because it includes aortic hypertrophy instead of overriding aorta.

Correct Answer: C

Rationale: The correct way to measure urinary output for an infant with dehydration is by weighing the diaper. Wet diapers are weighed to assess the amount of output accurately. Attaching a urine collecting bag and inserting a catheter are invasive methods not typically used for routine measurement of urinary output in infants. Wringing out the diaper can lead to inaccurate measurements and is not a recommended method for assessing urinary output.

Correct Answer: D

Rationale: The most important finding to report to the healthcare provider is a jaundiced sclera. Jaundice suggests liver involvement, which can be a sign of a serious underlying condition. Weakness and fatigue, intestinal cramping, and weight loss are important symptoms, but jaundice indicates a more urgent issue that needs immediate attention.

Correct Answer: B

Rationale: A temperature increase of 1.5°F (0.8°C) during a blood transfusion is a significant finding that can indicate a transfusion reaction, such as a febrile non-hemolytic reaction, which can progress to more severe reactions. It is crucial to report this immediately to the healthcare provider for further evaluation and intervention. Mild itching and rash (choice A) are common minor reactions to blood transfusions and can be managed appropriately without immediate concern. An increase in heart rate by 10 beats per minute (choice C) is within an acceptable range and may be a normal compensatory response to the transfusion. A slight headache (choice D) is a common complaint and is not typically associated with severe transfusion reactions; thus, it does not require immediate reporting compared to the temperature increase.

Correct Answer: B

Rationale: High levels of carbon dioxide in the blood lead to respiratory acidosis due to inadequate ventilation. The correct answer is B. In respiratory acidosis, the accumulation of carbon dioxide in the blood occurs due to inadequate exhalation, leading to acidosis. Choice A is incorrect as low oxygen levels are related to hypoxemia, not respiratory acidosis. Choice C is incorrect as increased bicarbonate levels would lead to alkalosis, not acidosis. Choice D is incorrect as an increased respiratory rate causing hyperventilation would actually help decrease carbon dioxide levels, not lead to respiratory acidosis.