A patient has a rapid irregular wide-complex tachycardia. The ventricular rate is 138. He is asymptomatic with a BP of 110/7-. He has a history of angina. Which of the following actions is recommended?
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Immediate synchronized cardioversion
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Seek expert consultation
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Give adenosine 6 mg IV bolus
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Give lidocaine 1-1.5 mg IV bolus
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