The client is exhibiting sinus bradycardia, is complaining of syncope and weakness, and has the following vital signs. Which treatment would the nurse anticipate being implemented?

A. Prepare for transcutaneous pacing: The client is symptomatic with sinus bradycardia, hypotension, syncope, and weakness, indicating hemodynamic instability. Transcutaneous pacing provides temporary electrical stimulation to increase heart rate and maintain adequate perfusion until definitive treatment can be initiated. B. Administer an antiarrhythmic medication: Antiarrhythmic drugs are used to treat tachyarrhythmias, not symptomatic bradycardia. Administering such medications could worsen the bradycardia and further compromise cardiac output. C. Prepare for synchronized cardioversion: Synchronized cardioversion is indicated for unstable tachyarrhythmias, such as atrial fibrillation or ventricular tachycardia with a pulse. It is not appropriate for bradycardia and could be harmful. D. Administer a thrombolytic medication: Thrombolytic therapy is used for acute myocardial infarction or thromboembolic events, not for bradycardia. There is no evidence of an occlusive clot causing the current hemodynamic instability.