Which step is essential when performing cardioversion?

Sedating the patient is a crucial step when performing cardioversion because it ensures the procedure is conducted safely and comfortably. Cardioversion can be uncomfortable or even painful due to the electrical shock delivered to the heart, so providing sedation helps to minimize discomfort and anxiety for the patient. This is particularly important in elective cardioversion, where the patient's experience and well-being are priorities.

Additionally, sedation helps to prevent any involuntary movement that might occur during the procedure, which can be detrimental to the effectiveness of the cardioversion. It is also essential for maintaining the patient's physiological stability and cooperation throughout the process. The other actions listed are either not routinely required or not appropriate in the context of performing cardioversion.