Summary

A potassium deficiency, or hypokalemia, can disrupt metabolic functions. This case study highlights a patient experiencing fatigue and weakness due to adrenal insufficiency.

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Antihypertensive Drugs: Potassium-Sparing Diuretics01:28

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Heart Failure Drugs: Inotropic Agents01:26

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Antiarrhythmic Drugs: Class I Agents as Sodium Channel Blockers01:22

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Class I antiarrhythmic drugs are used to treat various types of arrhythmias or irregular heart rhythms. These drugs block the sodium (Na+) channels in the cardiac cells, thereby affecting the movement of electrical impulses across the heart. Class I antiarrhythmic drugs are divided into three subgroups: Class IA, Class IB, and Class IC, each with distinct mechanisms of action and effects on the heart.
Class 1A Antiarrhythmic Drugs: These drugs work by moderately blocking sodium channels,...
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