What is the common dosage for Adenosine in treating supraventricular tachycardia?

What is the common dosage for Adenosine in treating supraventricular tachycardia?

• A. 3 mg bolus, followed by 6 mg if needed
• B. 6 mg bolus, followed by 12 mg if needed
• C. 5 mg bolus, followed by 10 mg if needed
• D. 10 mg bolus, followed by 20 mg if needed

Answer: (B)

The common dosage for adenosine in treating supraventricular tachycardia (SVT) is a 6 mg bolus, followed by a 12 mg bolus if the initial dose is ineffective. This dosing strategy is based on the pharmacological properties of adenosine, which acts quickly to interrupt reentrant pathways in the AV node. The initial bolus of 6 mg is generally sufficient to temporarily block conduction through the AV node, allowing for normalization of heart rhythm. If the initial bolus does not convert the SVT, the subsequent dose of 12 mg can be administered. This escalation in dosage is essential due to the rapid elimination of adenosine from the bloodstream, requiring higher doses for potential efficacy with subsequent attempts. Understanding this dosing protocol is crucial for healthcare professionals, as it aligns with the established recommendations for emergency management of SVT, ensuring that they can provide timely and effective care to patients experiencing this potentially harmful arrhythmia.

The common dosage for adenosine in treating supraventricular tachycardia (SVT) is a 6 mg bolus, followed by a 12 mg bolus if the initial dose is ineffective. This dosing strategy is based on the pharmacological properties of adenosine, which acts quickly to interrupt reentrant pathways in the AV node.

The initial bolus of 6 mg is generally sufficient to temporarily block conduction through the AV node, allowing for normalization of heart rhythm. If the initial bolus does not convert the SVT, the subsequent dose of 12 mg can be administered. This escalation in dosage is essential due to the rapid elimination of adenosine from the bloodstream, requiring higher doses for potential efficacy with subsequent attempts.

Understanding this dosing protocol is crucial for healthcare professionals, as it aligns with the established recommendations for emergency management of SVT, ensuring that they can provide timely and effective care to patients experiencing this potentially harmful arrhythmia.