Synchronized cardioversion, 12-Lead ECG, and supplemental oxygen are interventions to consider in caring for a patient with a life-threatening arrhythmia.
Synchronized cardioversion would be an appropriate next step in caring for Mr. van Essen if he is experiencing a life-threatening arrhythmia that requires immediate correction through the delivery of a controlled electric shock to restore a normal heart rhythm.
12-Lead ECG should also be done to assess the underlying heart rhythm and identify any abnormalities that may be contributing to Mr. van Essen's condition.
While supplemental oxygen is important in many medical situations, in the context of dealing with arrhythmias, the priority would be to address the abnormal heart rhythm promptly.
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