A nurse is monitoring a 70-year-old patient on telemetry who…
A nurse is monitoring a 70-year-old patient on telemetry who was admitted for syncope and hypotension. The ECG reveals a third-degree atrioventricular (AV) block with a ventricular rate of 28 beats per minute. The patient is diaphoretic and reports severe dizziness. The healthcare provider is unavailable for immediate consultation. What is the most appropriate immediate action by the nurse?