Cardiac Arrhythmias and Medication Management Quiz

Increased heart rate due to irregular electrical signals in the atria.

Episodes of rapid heart rate that start and stop suddenly, originating above the heart's ventricles.

Atrial fibrillation often shows irregular electrical signals without distinct P waves on an ECG.

Amiodarone can affect thyroid function, often leading to hypothyroidism as a side effect.

Low potassium levels are not typically associated with triggering ventricular fibrillation; however, high potassium levels can be.

Correcting abnormal electrical signals in the ventricles to establish a normal heartbeat rhythm.

Class III drugs prolong the time it takes for heart muscle cells to reset after each heartbeat, aiding in controlling irregular heart rhythms.

Beta-blockers reduce the effects of adrenaline on the heart, slowing the heart rate and lowering blood pressure.

Low potassium levels can disrupt the heart's electrical activity, leading to irregular heartbeats like torsades de pointes.

Calcium channel blockers interfere with calcium entering heart muscle cells, reducing electrical conduction and helping control heart rhythm.

Verapamil helps control rapid heart rates by slowing electrical conduction in the heart's atrioventricular node.

Sotalol can worsen heart failure by reducing the heart's ability to contract effectively.

Procainamide is often used to convert irregular heart rhythms to normal sinus rhythm, especially in stable cases of ventricular tachycardia.

Quinidine can further prolong the QT interval, increasing the risk of dangerous arrhythmias.

Class III drugs inhibit a specific potassium current, helping to stabilize heart rhythms by prolonging the action potential duration.