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You are preparing to cardiovert a patient who has a perfusing ventricular tachyarrhythmiaand hypotension. Why is it important to turn on the synchronizing circuit of the defibrillator?

Which of the following pharmacological agents used in the treatment of cardiac arrest has positive inotropic, chronotropic, dromotropic, and vasoconstrictive properties?

The monitor shows an atrial rate of 60, a ventricular rate of 46. There is no relationshipbetween the P waves and the QRS complexes. What type of heart block is this?

Which of the following dysrhythmias presents a significant risk for emboliccerebrovascular accident (CVA)?

Your patient presents with bilateral leg and presacral edema. You should suspect

Stimulation of a beta-1 receptor in the heart will

Which of the following ECG findings would indicate a possible pacemaker failure?

The 12 lead ECG of a chest pain patient shows ST elevation in V3 and V4. What typeof MI should you suspect?

What is a common complaint of a patient experiencing a thoracic aortic dissection?

An adult complains of acute dyspnea with mild, localized chest discomfort that onset atrest but has worsened over the past hour. He denies past cardiac history. Two weeks ago, hebroke his leg and is in an above-the-knee cast. Vital signs are BP 192/104, P 102, R 28. Lungssounds are clear bilaterally. You should suspect