Final answer:
The expected therapeutic response to adenosine (Adenocard) is a short period of asystole, where the heart temporarily pauses. This effect helps reset the heart rhythm in cases of supraventricular tachycardia.
Step-by-step explanation:
The expected therapeutic response after the administration of adenosine (Adenocard) is c. A short period of asystole. Adenosine is a cardiac drug that temporarily slows the heart rate and is often used to treat certain forms of supraventricular tachycardia. By activating adenosine receptors, it increases the potassium efflux from cardiac myocytes, hyperpolarizing the cells and inhibiting calcium currents, which slows down the heart rate. This can lead to a short pause in heart activity known as asystole. This effect is used to reset the heart's rhythm back to normal in cases where it's beating irregularly and too fast (arrhythmia). Adenosine is not expected to cause increased intraocular pressure, a tonic-clonic seizure, or a hypertensive crisis.