A patient who has epilepsy will begin an anticonvulsant medication.
The patient asks the nurse how long the medication will be necessary.
How will the nurse respond?

Choice A rationale

Cardiac glycosides are not known for increasing heart rate. Instead, they tend to decrease heart rate by enhancing vagal tone and increasing the refractory period of the atrioventricular node, which helps in controlling heart rate, especially in atrial fibrillation.

Choice B rationale

Cardiac glycosides actually increase the force of myocardial contractions. They inhibit the sodium-potassium ATPase pump, which leads to an increase in intracellular sodium and calcium levels in the myocardial cells, thus increasing the force of contraction.

Choice C rationale

Cardiac glycosides do not significantly decrease conduction velocity. They primarily affect the contractility and heart rate but their influence on conduction velocity is relatively mild.

Choice D rationale

Cardiac glycosides improve renal blood flow and increase urine output by increasing the cardiac output and reducing the activation of the renin-angiotensin-aldosterone system. This helps in relieving symptoms of heart failure.

Choice A rationale

Schedule I drugs have no medical use and high abuse potential, unlike morphine.

Choice B rationale

Schedule III drugs have less abuse potential than Schedule II, making this incorrect for morphine.

Choice C rationale

Schedule IV drugs have even lower abuse potential, incorrect for morphine.

Choice D rationale

Schedule II drugs have high abuse potential with medical use, fitting morphine's classification.