Answer :
Final answer:
Digoxin (Lanoxin) effectively lowers blood pressure, increases glomerular filtration rate in the kidneys, decreases sodium reabsorption while strengthening cardiac contractions by manipulating calcium ion levels in the heart cells.
Explanation:
Digoxin (Lanoxin) possesses multiple beneficial effects especially concerning heart conditions. Primarily, it decreases blood pressure due to its function as a vasodilator which leads to a broader blood vessel diameter. This process, in turn, helps increase the glomerular filtration rate aiding in better kidney function by facilitating the processing of bodily fluids.
Additionally, digoxin decreases sodium reabsorption in the kidneys providing a diuretic effect that can reduce blood pressure further and decrease circulatory system strain. Pivotal to its effectiveness, digoxin also acts as a positive inotropic agent, increasing the strength of contraction in the heart. It accomplishes this by blocking the movement of calcium ions into the sarcoplasmic reticulum, causing an increase in intracellular calcium levels. This ultimately makes each heartbeat more effective in pumping blood, thereby decreasing the overall heart rate necessary to maintain circulation.
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