MRCP2-0151

A 79-year-old male patient is under the care of your supervising consultant on the medical ward. He was admitted 48 hours ago with a severe case of pneumonia. He has been receiving antibiotics and oxygen therapy and his condition has been improving. However, the nurse calls you to see the patient as she noticed the heart rate was slow on the monitor. The patient had started to feel light headed and his blood pressure was 110/70 mmHg. A 12 lead ECG reveals a bradycardia with a rate of 44 beats per minute with narrow QRS morphology. There are some non-conducted P waves and you note the PR remains unchanged prior to the non-conducted beat. What is the most appropriate next management step?