NAPLEX (North American Pharmacist Licensure Examination) Practice Exam

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Ace your North American Pharmacist Licensure Examination (NAPLEX) with our comprehensive practice test. Features include interactive flashcards, multiple-choice questions, with detailed hints and explanations. Fast-track your pharmacy career today!

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What deficiency causes respiratory distress syndrome (RDS) in newborns?

Hemoglobin
Surfactant
Platelets
Red blood cells

The correct answer is: Surfactant

Surfactant deficiency is the cause of respiratory distress syndrome (RDS) in newborns. Surfactant is a substance produced in the lungs that helps keep the air sacs open and prevents them from collapsing. In premature infants, the lungs may not have produced enough surfactant, leading to breathing difficulties and RDS. This is why option B is correct. Hemoglobin (option A), platelets (option C), and red blood cells (option D) are not directly associated with the development of respiratory distress syndrome in newborns. Hemoglobin is responsible for carrying oxygen in the blood, platelets are involved in blood clotting, and red blood cells are responsible for carrying oxygen throughout the body.