A client has stable supraventricular tachycardia at 190/min and normal blood pressure. What should the nurse expect to try first?
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Correct answer: D
For stable, regular narrow-complex tachycardia, vagal maneuvers (such as a modified Valsalva) are tried first, then adenosine. Cardioversion is for unstable clients.
Source: AHA. Guidelines for CPR and ECC (adult tachycardia algorithm)