In the wide complex tachycardia algorithm, what is the second dose of Adenosine if the first dose is unsuccessful?

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Multiple Choice

In the wide complex tachycardia algorithm, what is the second dose of Adenosine if the first dose is unsuccessful?

Explanation:
The second dose is 12 mg given as a rapid IV push (IO acceptable). In this protocol, adenosine dosing escalates if the first 6 mg dose does not produce a response, because adenosine acts very quickly and a higher dose increases the chance of transient AV nodal blockade when the tachycardia is AV-nodal dependent. Administer the 12 mg promptly and flush with saline to ensure delivery, then reassess the rhythm. Remember that adenosine is not routinely effective for true wide complex tachycardias that are VT, so continue to follow the broader algorithm and switch to antiarrhythmics or synchronized cardioversion as indicated by the patient’s stability and rhythm.

The second dose is 12 mg given as a rapid IV push (IO acceptable). In this protocol, adenosine dosing escalates if the first 6 mg dose does not produce a response, because adenosine acts very quickly and a higher dose increases the chance of transient AV nodal blockade when the tachycardia is AV-nodal dependent. Administer the 12 mg promptly and flush with saline to ensure delivery, then reassess the rhythm. Remember that adenosine is not routinely effective for true wide complex tachycardias that are VT, so continue to follow the broader algorithm and switch to antiarrhythmics or synchronized cardioversion as indicated by the patient’s stability and rhythm.

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