Premature Atrial Contraction (Single) Vs. Premature Atrial Contraction (Multiple) on Your Watch ECG

Got other questions on PAC? See the Qaly guides on PACs:

• What PAC Looks Like on Your ECG
• What Heart Palpitations and Irregular Heartbeats Look Like on Your ECG
• ‍How to Read an ECG: Stanford Cardiologist Explains
• ‍The Ultimate Cardiologist's Guide to the Smartwatch ECG

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Introduction

Electrocardiograms (ECGs) are valuable tools used to assess the electrical activity of the heart. With the advent of ECG-enabled smartwatches, we now have the ability to monitor our heart rhythms in real-time. This article explores two distinct heart rhythms: premature atrial contraction (single) and premature atrial contraction (multiple) and how they may appear on your watch ECG. Let’s dive in!

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What’s a Premature Atrial Contraction (PAC)?

Premature atrial contractions are early beats that originate from the atria — the upper chambers of the heart. 

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On an ECG, PACs are identified by an early and often different-looking P wave, followed by a QRS complex and a compensatory pause. Here’s more on what a single PAC looks like on your watch ECG.

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What Are Multiple PACs?

When multiple PACs occur, they appear as irregular early beats on an ECG. While occasional PACs are usually benign, frequent PACs can sometimes indicate underlying heart disease or trigger other arrhythmias. 

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On an ECG, PACs are identified by an early and often different-looking P wave, followed by a QRS complex and a compensatory pause. Here’s more on what multiple PACs look like on your watch ECG.

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What’s the Difference Between a Single and Multiple PACs?

When comparing premature atrial contraction (single) and premature atrial contraction (multiple), several key differences and similarities emerge. Both rhythms involve premature atrial contractions, but the main distinction lies in the frequency. Single PACs occur sporadically, whereas multiple PACs appear in rapid succession.

Although these rhythms may be concerning, they are generally benign and do not pose a significant risk to overall health. However, in some cases, underlying heart conditions or other factors may contribute to the occurrence of PACs, warranting further evaluation by a healthcare professional.

It's important to note that your watch ECG provides valuable information about your heart's rhythm, but it is not a substitute for a comprehensive medical assessment. If you observe any irregularities or have concerns about your heart health, consult with a healthcare provider for a thorough evaluation.

Remember, regular monitoring of your heart rhythm using your watch ECG can provide valuable insights into your cardiovascular health, empowering you to take proactive steps in maintaining a healthy heart. Stay informed, stay proactive, and stay heart healthy!

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Still Not Sure if It’s a Single or Multiple PACs on Your ECG?

Differentiating between one vs multiple PACs on your ECG can be tricky. If you’re still looking for help interpreting your ECG further, check out the Qaly app on App Store or Play Store. On Qaly, human experts will interpret your ECGs within minutes, day or night. Try out the Qaly app today!