A patient's cardiac monitor shows sinus rhythm,rate 64.The P-R interval is 0.18 seconds at 1:00 AM,0.22 seconds at 2:30 PM,and 0.28 seconds at 4:00 PM.Which action should the nurse take next?

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The patient has progressive first-degree atrioventricular (AV)block,and the b-blocker should be held until discussing the medication with the health care provider.Documentation and assessment are appropriate but not fully adequate responses.The patient with first-degree AV block usually is asymptomatic,and a pacemaker is not indicated.Atropine is sometimes used for symptomatic bradycardia,but there is no indication that this patient is symptomatic.

A Patient's Cardiac Monitor Shows Sinus Rhythm,rate 64