what could be prob. with pulse at 54

Hello. Thank you for writing.

A heart rate of fewer than 60 beats per minute (BPM) in adults is called bradycardia. Keep in mind, what's too slow for you may depend on your age and physical condition. So it's important to discuss this with your doctor.

Some causes of bradycardia according to MayoClinic:

-Heart tissue damage related to aging
-Damage to heart tissues from heart disease or heart attack
-Infection of heart tissue (myocarditis)
-Underactive thyroid gland (hypothyroidism)
-Imbalance of chemicals in the blood, such as potassium or calcium
-Repeated disruption of breathing during sleep (obstructive sleep apnea)
-Inflammatory diseases, such as rheumatic fever or lupus
-Medications, including some drugs for other heart rhythm disorders, high blood pressure, and psychosis.

Helena