A diagnosis of<unk>  in adults is based on a heart rate less than 60 BPM, although some studies use a heart rate of less than 50 BPM. This is determined usually either by palpation or ECG. If symptoms occur, a determination of electrolytes may be helpful in determining the underlying cause.
Bradycardia
Hypopyon
Tachycardia
Sinus bradycardia
Apnea
Reflex bradycardia
Cardiovascular drift
Bradypnea