WE’VE seen it in our favourite romantic movies – and for many of us, we’ve even felt it before in real life.
The door of the cafe swings open and in walks the man or woman of your dreams. Your palms get sweaty, your knees get weak and your heart skips a beat.
While this phrase is often used in the context of falling in love, if your heart literally skips a beat, you may have premature ventricular contraction (PVC).
“They are common,” says Sunway Medical Centre consultant cardiologist and electrophysiologist Dr How Ann Kee. “Some people feel them, but others don’t.”
She added: “Some have their PVCs detected only on an electrocardiogram (ECG) during a health screening.”
While PVCs are fairly common, with up to 50% of people having experienced PVC at one time or another in their lives, this is not to say that PVCs should be disregarded, especially if they are interfering with heart function or causing significant symptoms.
So, when your heart skips a beat, is it love, excitement… or a PVC?
What is a PVC, and should I be worried?
A PVC is an extra electrical impulse arising from the heart’s lower chamber (ventricle). It interferes with regular normal heartbeats.
You may feel like your heart is fluttering as skipped heartbeats are abnormally strong beats.
PVCs are usually not problematic to you or your health, and most PVCs are isolated – meaning they happen one at a time. But the feeling of skipped beats can be quite bothersome to the patients.
PVCs become a concern if they happen frequently. According to How, if the PVC burden is more than 15%, that is considered excessive and may result in left ventricle dysfunction.
To put those numbers in context, an average human heart beats about 100,000 times a day, and having 15,000 PVCs a day equates to about a 15% PVC burden.
PVCs are common, and the cause is idiopathic or unknown.
How explained that PVCs can happen in a healthy person of any age with a normal structural heart. They can also occur in patients with underlying heart disease or who previously had a heart operation.
There are other health factors that may aggravate the development of PVCs. These include:
- Too much caffeine
- Electrolyte imbalances
- Lack of sleep
- Excess usage of alcohol, tobacco or drugs
Benign PVCs… or Not
The first step in diagnosing PVCs is to do an ECG. A physician may also recommend a Holter monitor that will record a person’s heartbeat over 24 hours.
“That will quantify the burden of PVCs, thus determining the treatment plan of the PVC,” How said.
In some cases, doctors may request a supervised exercise stress test if symptoms are found to be associated with exertion, or echocardiography for an evaluation of heart structure and function.
The outcome is better, in the absence of structural heart disease, as a high-burden PVC may result in left ventricle dysfunction.
Treatment for PVCs depends upon the PVC burden, symptoms and presence of heart dysfunction. For infrequent PVCs, the management is usually conservative.
However, if PVCs are frequent, and patients are symptomatic, How would recommend medications aiming to reduce the PVC burden.
“The response to medication differs between individuals. In patients who do not respond well to medications, catheter ablation is recommended,” How added.
An electrophysiology study (EPS) and catheter ablation is a procedure done by cardiac electrophysiologists, cardiologists who subspecialise in heart rhythm diseases.
PVCs are usually not life-threatening. However, frequent PVCs may result in heart failure and catheter ablation may eliminate the PVC and improve heart function.
Finding PVCs should, at the very least, trigger a detailed assessment of your heart as patients with PVCs are found to have a better medical outcome and are potentially curable if managed early and appropriately.
After all, it is always a good idea to reserve these heart flutters for your one-and-only. – Oct 25, 2022
Sunway Medical Centre is a leading private tertiary medical centre in Malaysia, offering a comprehensive range of medical services, which include facilities and advanced medical technologies for outpatient and inpatient speciality care, health and wellness programmes and 24-hour emergency services.
The views expressed are solely of the author and do not necessarily reflect those of Focus Malaysia.
Main photo credit: In A Heartbeat