Can Sleep Apnea Cause Heart Palpitations?

Yes — sleep apnea can absolutely cause heart palpitations, skipped beats, sudden racing heart episodes, and nighttime “panic-like” awakenings.

Many people are surprised to learn that their heart symptoms may actually begin while they are asleep.

If you regularly wake up with:

• a pounding heartbeat

• fluttering in your chest

• sudden adrenaline surges

• chest discomfort

• anxiety at night

• unexplained rapid heart rate

…sleep apnea may be contributing to the problem.

What Happens During Sleep Apnea?

During obstructive sleep apnea (OSA), the airway repeatedly collapses during sleep, causing breathing pauses that can last seconds to over a minute.

Each time breathing stops:

• oxygen levels may drop

• carbon dioxide rises

• the brain triggers a stress response

• adrenaline surges occur

• the heart is forced to work harder

This repeated “fight or flight” activation can place significant strain on the cardiovascular system.

In some patients, this may lead to:

• heart palpitations

• elevated heart rate

• irregular heartbeats

• nighttime panic sensations

• blood pressure spikes

  
  

Why Palpitations Often Happen at Night

Many patients with sleep apnea notice symptoms like:

• waking suddenly around 2AM–4AM

• feeling their heart racing

• sweating or gasping

• needing to sit upright

• anxiety attacks during sleep

This often happens immediately after an apnea event.

When oxygen levels drop, the body releases stress hormones such as adrenaline to “restart” breathing. That adrenaline surge can feel exactly like:

• panic

• a pounding heartbeat

• fluttering

• skipped beats

• chest pressure

Some patients are even initially diagnosed with anxiety before sleep apnea is discovered.

Can Sleep Apnea Cause Irregular Heart Rhythms?

Yes.

Untreated sleep apnea is associated with an increased risk of:

• atrial fibrillation (AFib)

• premature ventricular contractions (PVCs)

• premature atrial contractions (PACs)

• sinus tachycardia

• nocturnal arrhythmias

Not every palpitation is dangerous — but persistent symptoms should never be ignored.

Sleep apnea can also worsen existing heart conditions.

Signs Your Palpitations Might Be Sleep-Related

Your symptoms may be linked to sleep apnea if you also experience:

• loud snoring

• choking or gasping during sleep

• daytime fatigue

• morning headaches

• dry mouth on waking

• poor concentration

• waking up multiple times at night

• high blood pressure

• unexplained anxiety

• excessive daytime sleepiness

Partners often notice the breathing pauses before the patient does.

Can CPAP Therapy Help Heart Palpitations?

In many cases, yes.

Effective CPAP therapy may help:

• reduce nighttime oxygen drops

• stabilise breathing

• reduce adrenaline surges

• improve sleep quality

• lower strain on the cardiovascular system

Many patients report:

• fewer nighttime awakenings

• calmer sleep

• reduced racing heart episodes

• better daytime energy

• improved blood pressure control

However, persistent palpitations should still be medically evaluated, especially if associated with:

• chest pain

• dizziness

• fainting

• severe shortness of breath

  
  

Why Proper CPAP Monitoring Matters

Not all CPAP therapy is equally effective.

If pressure settings, mask leaks, or residual apnea events are not properly monitored, symptoms may continue despite using a machine.

This is why clinically supported therapy and ongoing monitoring are important — especially in patients with cardiovascular symptoms.

At CPAP Equip, we focus on:

• clinically supported ResMed CPAP therapy

• AirView remote monitoring

• therapy optimisation

• mask support

• nationwide South African support

Because successful CPAP therapy is about more than simply buying a machine.

When Should You Consider a Sleep Study?

A sleep study may be worth discussing with your doctor if you have:

• frequent palpitations at night

• loud snoring

• unexplained fatigue

• resistant high blood pressure

• nighttime anxiety or panic awakenings

• irregular heart rhythms

• excessive daytime sleepiness

Many patients are surprised to discover that improving their breathing during sleep also improves how their heart feels during the day.

Final Thoughts

Heart palpitations can have many causes — including stress, caffeine, anxiety, medications, thyroid problems, and heart conditions.

But sleep apnea is one of the most commonly overlooked contributors.

If your heart symptoms seem worse at night, occur with snoring or poor sleep, or leave you exhausted during the day, it may be worth investigating your sleep health further.