Which medication is used as a cardiac glycoside during pregnancy?

Digoxin is the appropriate medication classified as a cardiac glycoside and is commonly used during pregnancy for certain heart conditions. Cardiac glycosides like digoxin work by increasing the force of cardiac contractions and controlling heart rate, making them useful in the management of conditions such as heart failure and atrial fibrillation.

During pregnancy, digoxin can be prescribed when the benefits to the mother outweigh the risks to the fetus, as it has a specific pharmacological profile that allows it to be safely used under medical supervision. It is important to monitor both maternal and fetal well-being when administering this medication to ensure safety for both parties.

The other medications listed do not fall into the category of cardiac glycosides. Ampicillin is an antibiotic, heparin sodium is an anticoagulant, and propranolol is a beta-blocker typically used for hypertension and anxiety, but it does not possess the characteristics of a cardiac glycoside that aid in improving heart contractility as digoxin does.