Premature atrial contraction

Common Name(s)

Premature atrial contraction

Premature atrial contractions (PAC) are irregular heartbeats caused when impulses from a different part of the heart occur before the heart’s natural pacemaker (the sinoatrial node or SA node). It is a type of cardiac arrhythmia. The human heart is made up of four chambers. Blood enters the heart through the two atria and is pumped out of the heart through the two ventricles. If the atrium is contracting too early, it causes PAC. If the early contraction comes from the ventricle it is called a premature ventricular contraction. These conditions typically present with the same symptoms; therefore, it may be difficult to tell them apart.

Individuals with PAC often feel as though they have missed or skipped a heartbeat. When the heartbeat returns after the missed beat, it usually feels stronger than normal and some individuals may feel the urge to cough. Most PACs are caused by stress or stimulants like coffee, tobacco, or alcohol. A small amount of PACs are caused by a more serious heart condition; but for the most part, PACs occur in otherwise healthy people.

The diagnosis process may include blood tests, EKGs (tests the electrical impulses of your heart), or an echocardiogram (uses sound waves to create a picture of your heart; also known as a cardiac ultrasound). There is usually no treatment necessary as most PACs are not dangerous. Some medications may be prescribed to lessen the symptoms. While most PACs are not dangerous, if you have been experiencing these symptoms, you should tell your doctor at your next appointment.

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Advocacy and Support Organizations

 

Condition Specific Organizations

Following organizations serve the condition "Premature atrial contraction" for support, advocacy or research.

There are currently no organizations listed in Disease InfoSearch that support this condition. Create a listing.

 

 

General Support Organizations

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Scientific Literature

Articles from the PubMed Database

Research articles describe the outcome of a single study. They are the published results of original research.
The terms "Premature atrial contraction" returned 2 free, full-text research articles on human participants. First 3 results:

Use of self-gated radial cardiovascular magnetic resonance to detect and classify arrhythmias (atrial fibrillation and premature ventricular contraction).
 

Author(s): Eve Piekarski, Teodora Chitiboi, Rebecca Ramb, Li Feng, Leon Axel

Journal:

 

Arrhythmia can significantly alter the image quality of cardiovascular magnetic resonance (CMR); automatic detection and sorting of the most frequent types of arrhythmias during the CMR acquisition could potentially improve image quality. New CMR techniques, such as non-Cartesian ...

Last Updated: 31 Dec 1969

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Effect of obstructive sleep apnea syndrome on serum C-reactive protein level, left atrial size and premature atrial contraction.
 

Author(s): Bundhoo Kaviraj, Shu-chang Bai, Liang Su, Xue-ou Zheng, Rong Huang, Tao-ping Li, Ding-li Xu

Journal: Nan Fang Yi Ke Da Xue Xue Bao. 2011 Feb;31(2):197-200.

 

To assess the changes of serum C-reactive protein (CRP) level, left atrial size and atrial premature contraction (PAC) in patients with obstructive sleep apnea syndrome (OSAS).

Last Updated: 31 Dec 1969

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Reviews from the PubMed Database

Review articles summarize what is currently known about a disease. They discuss research previously published by others.
The terms "Premature atrial contraction" returned 1 free, full-text review articles on human participants. First 3 results:

Premature atrial contraction induces torsades de pointes in a patient of Takotsubo cardiomyopathy with QT prolongation.
 

Author(s): Hiroaki Kawano, Yuji Matsumoto, Shuji Arakawa, Osami Satoh, Motonobu Hayano

Journal: Intern. Med.. 2010 ;49(16):1767-73.

 

Although the prognosis for patients with stress-induced cardiomyopathy (Takotsubo cardiomyopathy) is relatively good, some patients with this syndrome develop torsades de pointes, which can be fatal. The present report describes a patient with Takotsubo cardiomyopathy and torsades ...

Last Updated: 31 Dec 1969

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Clinical Trial Information This information is provided by ClinicalTrials.gov

Zero Fluoroscopic Ablation Versus Conventional Fluoroscopic Ablation for Right Atrial Arrhythmias
 

Status: Recruiting

Condition Summary: Atrial Arrhythmia; Atrial Premature Complexes; Atrial Tachycardia

 

Last Updated: 11 May 2017

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SHERLOCK 3CG™ Diamond Tip Confirmation System
 

Status: Recruiting

Condition Summary: Indication for Peripheral Intravenous Catheterization; Atrial Flutter; Premature Atrial Contraction; Premature Ventricular Contraction; Premature Junctional Contraction; Tachycardia; Atrioventricular Block; Bundle-Branch Block

 

Last Updated: 15 May 2018

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Biospecimen Repository for Cardiac Arrhythmias at the Cleveland Clinic
 

Status: Recruiting

Condition Summary: Arrhythmias, Cardiac

 

Last Updated: 21 Jul 2017

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