Heart rate 54 on an adult - what does it mean?

Where 54 bpm sits on the adult scale

What a resting pulse of 54 means

A pulse in the 50s at rest is typical for people who exercise regularly, and for most adults first thing in the morning. Large population studies associate lower resting heart rates — within the normal range — with better cardiovascular fitness.

It matters only if it comes with symptoms such as unusual tiredness, dizziness, shortness of breath or fainting, or if it is a new change for you without a training explanation.

Ranges apply to adults and children aged 10 and older, measured at rest (American Heart Association). By the numbers: at 54 bpm the heart beats about every 1.11 seconds — roughly 77,760 beats a day.

Verapamil, diltiazem and a resting 54

Calcium channel blockers are a large group of medicines used for high blood pressure, angina and some rhythm problems. Only part of the group slows the heart. Verapamil and diltiazem, known as non-dihydropyridine calcium channel blockers, act directly on the sinus node and the AV node. They reduce how fast the pacemaker fires and how quickly signals pass to the ventricles. A resting pulse in the 50s on one of these drugs is common and often intended, for example when they are used to control the rate in atrial fibrillation.

The other branch, which includes amlodipine and nifedipine, works mainly by relaxing blood vessels. These drugs do not usually slow the pulse and can even nudge it up a little. If you take amlodipine and read 54, the medicine is unlikely to be the explanation.

When the combination slows things too much

Problems tend to arise from combinations rather than one drug. Pairing verapamil or diltiazem with a beta blocker, digoxin or amiodarone adds the slowing effects together, and doctors use such pairs with care. Some antibiotics, antifungals and grapefruit juice can raise blood levels of these calcium channel blockers, strengthening their effect. A pharmacist can check your full list in a few minutes.

Watch for these signs after starting or changing the dose:

• light-headedness, particularly when standing up
• new swelling of the ankles
• constipation, a frequent side effect of verapamil
• tiredness that limits ordinary activities
• readings that keep falling into the 40s

Living with a pulse in the mid-50s on medication

If you feel well, a steady 54 on verapamil or diltiazem usually means the drug is doing its job. Keep a log of morning readings and bring it to follow-up visits, since it helps the prescriber fine-tune the dose. Extended-release tablets should be swallowed whole; crushing them can release the dose all at once.

Exercise numbers change on these drugs as well. The heart rises less during effort, so age-based training zones may overstate what you can reach. Judging effort by breathing and how hard the work feels is often more practical.

Do not stop or halve the medicine by yourself, even if the number looks low. Call the prescriber instead, and seek emergency care for fainting, chest pain or severe breathlessness. More about medicines and other influences on a slow pulse is on the raising your heart rate page.

For a reliable resting value, sit quietly for five minutes first and average a few mornings: Resting Heart Rate: What It Says About Your Health. You can also measure by tapping along on the start page.

Nearby values

• 49 bpm
• 50 bpm
• 51 bpm
• 52 bpm
• 53 bpm
• 55 bpm
• 56 bpm
• 57 bpm
• 58 bpm
• 59 bpm

Measured on a child instead? See heart rate 54 in a child.

Sources: American Heart Association: All About Heart Rate · MedlinePlus: Pulse · ACSM position stand on exercise intensity (2011)

This page explains a single reading in general terms. It is not a diagnosis. Heart rate alone cannot tell whether the rhythm is regular or whether the heart is healthy — if you are worried, talk to a doctor.