Common “Not Always Dangerous” Heart Stopping Feeling

Newswise — People may feel a flip-flop in their chest when they’re under stress, haven’t slept well or even during normal activity. They may say, “I felt my heart stop for a second.” But in most cases, that heart-stopping feeling is actually an extra heartbeat, called a premature ventricular contraction (PVC).

“They’re very common,” said Dr. Sarah Hussain, a cardiac electrophysiologist with Penn State Heart and Vascular Institute. “Some people feel them, but others don’t.”

PVCs most often originate in the bottom chambers of the heart. “A PVC is a wider looking heartbeat,” said Barbara Bentz, a certified registered nurse practitioner with the Heart and Vascular Institute. “That extra beat is almost always followed by a pause, which occurs when the heart resets back to its normal beat.”

For people who feel PVCs, they can seem frightening. “They are not always dangerous,” Hussain said.

Causes of PVCs can vary. They may occur in high-adrenaline situations, triggered by stress or anxiety. Others may be side effects from certain medications. Sometimes electrolyte imbalances can cause PVCs. So can too much caffeine or alcohol.

PVCs can occur at any age, young or old. The causes of PVCs often varies depending on the age of the patient.

PVCs become more of a concern if they happen frequently. “If more than 10% to 15% of a person’s heartbeats in 24 hours are PVCs, that’s excessive,” Bentz said. The more PVCs occur, the more they can potentially cause a condition called cardiomyopathy (a weakened heart muscle).

People who have experienced a prior heart attack—or those already diagnosed with cardiomyopathy—should also take PVCs seriously. So too should people who experience symptoms, which can include chest pain and shortness of breath, in addition to palpitations or skipped heartbeats.

The first step in diagnosing PVCs—and learning whether they need treatment—is an electrocardiogram (ECG), performed in a primary care doctor’s office. A physician may recommend a wearable cardiac (Holter) monitor that will record a person’s heartbeats over a 24-hour period. “That will quantify how many PVCs someone is having and the frequency of their PVCs,” Hussain said.

 

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