What is the appropriate dose and administration route for adenosine?

The appropriate administration of adenosine in acute clinical settings is through a rapid intravenous push, typically at an initial dose of 6 mg. This method allows the medication to enter the circulation quickly, achieving immediate therapeutic levels needed to address certain types of supraventricular tachycardias. Following the initial dose, a saline flush of 20 cc is recommended to ensure that the drug is effectively delivered into the bloodstream and to promote rapid dispersion.

Adenosine is not suitable for oral administration because it is extensively metabolized in the gut and liver, making it ineffective if taken orally. Therefore, the option involving an oral tablet is not appropriate. The subcutaneous route is also not applicable, as adenosine needs to reach systemic circulation quickly, which isn't feasible via this route. Additionally, administering a prolonged intravenous infusion would not provide the rapid effect required in acute situations; adenosine is intended for quick intervention rather than extended therapeutic administration. Thus, the correct route and dosage are crucial in effectively treating specific cardiac dysrhythmias in emergency settings.