The correct statement regarding how epinephrine helps with cardiac arrhythmias is:
- It stimulates heart contractions.
Epinephrine, also known as adrenaline, is a hormone that can be used in emergency situations to treat cardiac arrest or certain types of cardiac arrhythmias. When administered, epinephrine acts on the heart by stimulating the heart muscle to contract more forcefully. This increased contraction strength can help restore a normal heart rhythm in cases of certain arrhythmias, particularly those that involve a weak or ineffective heartbeat.
By stimulating heart contractions, epinephrine can help improve blood circulation and oxygen delivery to the body's tissues, which is crucial during cardiac emergencies. It does not inhibit heart contractions, prevent vasodilation, or maintain blood pressure directly in the context of treating cardiac arrhythmias.
