To solve this question, identify the drug’s mechanism of action at the cellular level. Begin by recalling how digoxin affects ion transport across cardiac myocyte membranes. Focus on its impact on the Na⁺/K⁺-ATPase pump, and how this secondary change alters intracellular calcium levels. Then, choose the option that directly explains the increased contractility in cardiac…
5 Total attempts
Take the full course, get graded, and level up your learning—organized just for you!