Locations:
Search IconSearch

I’m Having AFib at Night: Should I Be Worried?

The short answer from a cardiovascular researcher

Person laying in bed looking concerned

Q: I’m experiencing AFib at night. Should I be worried?

A: It’s not uncommon for atrial fibrillation (AFib) to occur at night. The nerves that control your heart rate typically are in sleep mode, and that’s when your resting heart rate drops. Under these conditions, pacemaker activity from areas other than the normal pacemaker in the heart can trigger the onset of AFib.

Advertisement

Cleveland Clinic is a non-profit academic medical center. Advertising on our site helps support our mission. We do not endorse non-Cleveland Clinic products or services. Policy

In addition, many patients with AFib have an underlying issue of obstructive or central sleep apnea. If you are frequently sleepy during the daytime, that is especially likely to be the case. If you suffer from AFib, sleep apnea can disrupt the heart’s rhythms. This is a dangerous combination.

To help treat sleep apnea, your doctor may recommend continuous positive airway pressure (CPAP) or other devices that may help to reduce the frequency and burden of AFib.

— Researcher David Van Wagoner, PhD

Advertisement

Learn more about our editorial process.

Related Articles

Person sitting at a table in a bar, on their phone, with glass of beer on the table
February 3, 2025/Heart Health
Does Drinking Alcohol Increase Your Heart Rate?

Yes, grabbing a few beers or a couple of glasses of wine or cocktails with friends can increase your heart rate — dangerously in some cases

Hand pouring red capsules out of bottle into other hand
January 31, 2025/Nutrition
Do You Need CoQ10 Supplements?

Most people don’t need additional CoQ10, but it may help if you live with migraines or heart disease — if you check with your doctor first

Healthcare provider examining a person's wrist and lower arm
January 24, 2025/Orthopaedics
The Relationship Between Transthyretin Amyloidosis Cardiomyopathy and Carpal Tunnel Syndrome

Carpal tunnel syndrome sometimes indicates a higher risk for this serious (but now treatable) heart condition

Orange capsules poured out of a bottle
January 17, 2025/Heart Health
Taking a Statin? Here’s Why You Don’t Need CoQ10 Supplements

There’s not enough evidence to show that this supplement has any effect on muscle aches from cholesterol-lowering meds

Artificial sweetener in wooden bowl on kitchen towel, with spoonful nearby
January 8, 2025/Heart Health
What’s Erythritol? And Is It Bad for You?

Erythritol is found in a range of “diet,” “sugar-free” and “keto-friendly” foods — but research has linked it to heart attack and stroke

Person lying on back, hands folded against chest, sleeping in bright daylit room
January 7, 2025/Sleep
What’s the Best Sleep Position for You?

There’s no one sleep position that’s best for everyone — but you may benefit from sleeping a certain way depending on your individual needs

Adding spoonful of allulose to mug of coffee
November 4, 2024/Nutrition
What You Need To Know About Allulose

Although allulose is an FDA-approved sugar substitute, more research is needed to understand its safety

Smiling Person briskly walking outside on sidewalk, jacket tied around waist
September 18, 2024/Heart Health
Can Walking Speed Be a Sign of Your Heart Health?

Studies show those who walk faster tend to have a lower risk of heart disease

Trending Topics

Person in bed sleeping on their side, covers off
Breathing Problems? Try These Sleep Positions

If you’re feeling short of breath, sleep can be tough — propping yourself up or sleeping on your side may help

A couple looking at skyline, with one person slightly behind the other, head bent down
What Is Anxious Attachment Style — and Do You Have It?

If you fear the unknown or find yourself needing reassurance often, you may identify with this attachment style

Glasses and bottle of yellow-colored prebiotic soda, with mint, lemon and ginger garnish
Are Prebiotic Sodas Good for You?

If you’re looking to boost your gut health, it’s better to get fiber from whole foods

Ad