A client presents to the emergency healthcare setting and diagnosed with a life-threatening ventricular dysrhythmia. Which of the following medications would the nurse begin to prepare?

A. Atenolol is a beta-blocker used for various cardiac conditions but is not typically the first-line treatment for acute ventricular dysrhythmias. B. Lisinopril is an ACE inhibitor, which is not indicated for immediate management of ventricular dysrhythmias. C. Procainamide is an antiarrhythmic medication specifically used to treat ventricular dysrhythmias and would be appropriate in this scenario. D. Adenosine is typically used for rapid atrial dysrhythmias, not specifically for ventricular dysrhythmias, making procainamide the better choice.