ATI RN
Pediatric Musculoskeletal Disorders NCLEX Questions Questions
Question 1 of 5
Pseudohyponatremia is present in all the following EXCEPT
Correct Answer: C
Rationale: Pseudohyponatremia occurs due to high plasma lipids or proteins (e.g., myeloma, hypertriglyceridemia) displacing water. Protein-losing enteropathy reduces proteins, not causing pseudohyponatremia.
Question 2 of 5
ECG changes in hypomagnesaemia is characterized by
Correct Answer: D
Rationale: Hypomagnesemia prolongs PR, QRS, and QT intervals due to impaired cardiac repolarization.
Question 3 of 5
The MOST common cause of hyperphosphatemia is
Correct Answer: C
Rationale: Renal insufficiency is the most common cause of hyperphosphatemia due to reduced phosphate excretion.
Question 4 of 5
In metabolic alkalosis secondary to gastric loss, all the following mechanisms prevent renal bicarbonate loss EXCEPT
Correct Answer: A
Rationale: Mineralocorticoid escape prevents sodium retention, not bicarbonate loss; others maintain alkalosis.
Question 5 of 5
Increased production of CO2 occurs in all the following EXCEPT
Correct Answer: B
Rationale: Emesis does not increase CO₂ production; others (e.g., fever, activity) raise metabolic rate and CO₂.