RRT Pharmacology Flashcards
6 cards from real RRT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 RRT Pharmacology flashcards as text
Racemic epinephrine is primarily used via nebulization to treat which condition in pediatric patients?
Answer: Croup (laryngotracheobronchitis)
Racemic epinephrine reduces subglottic edema in croup through alpha-adrenergic-mediated vasoconstriction, relieving stridor.
Which drug is used to reverse neuromuscular blockade in patients receiving non-depolarizing agents?
Answer: Neostigmine
Neostigmine inhibits acetylcholinesterase, increasing acetylcholine levels at the neuromuscular junction to reverse non-depolarizing blockade.
What is the primary indication for inhaled nitric oxide (iNO) therapy?
Answer: Pulmonary arterial hypertension in neonates with hypoxic respiratory failure
Inhaled nitric oxide selectively dilates pulmonary vasculature, reducing pulmonary vascular resistance in neonates with hypoxic respiratory failure and PPHN.
Which diuretic is most commonly used to reduce pulmonary edema in patients with congestive heart failure?
Answer: Furosemide
Furosemide is a loop diuretic that rapidly reduces intravascular volume and preload, relieving pulmonary congestion in CHF.
What is the mechanism of action of surfactant replacement therapy?
Answer: Reduces surface tension in alveoli to prevent collapse
Exogenous surfactant lowers alveolar surface tension, preventing atelectasis and improving lung compliance in neonates with RDS.
Which medication is used to treat methemoglobinemia in patients with toxic oxygen levels?
Answer: Methylene blue
Methylene blue reduces methemoglobin back to functional hemoglobin by acting as an electron donor via the NADPH-dependent pathway.