(C) CVSKL 

Irregular heart rhythms, broadly known as arrhythmias, pose a significant health threat, with the risk escalating as temperatures drop. While some types of arrhythmia are relatively benign, others, particularly atrial fibrillation (AFib), are life-threatening and can lead to sudden cardiac death or stroke. Experts urge the public to seek precise diagnosis and treatment, especially if they experience palpitations after consuming alcohol.

A healthy heart typically beats between 60 and 100 times per minute. Arrhythmia refers to any deviation—a beat that is too fast, too slow, or irregular. Data shows a concerning trend: the number of diagnosed arrhythmia patients in South Korea reached over 500,000 last year, marking a 25% increase since 2020. This rise is attributed to a combination of factors including aging, stress, genetic predispositions, and, notably, excessive alcohol consumption.

Seasonal changes also play a role in cardiac health. Winter, in particular, stresses the heart. In response to cold, the body constricts blood vessels to conserve heat, leading to narrowed passages and elevated blood pressure. This forced labor can cause the heart to beat harder and more frequently, often resulting in an irregular rhythm.

The Danger of Atrial Fibrillation 

Arrhythmias vary widely in their severity. While conditions like premature atrial contractions or supraventricular tachycardia are generally considered less dangerous in people with otherwise normal hearts, AFib and ventricular tachycardia significantly increase the risk of stroke and sudden death.

AFib is a common and urgent form of arrhythmia characterized by an extremely irregular and rapid heartbeat. Typical symptoms include palpitations (a racing heart sensation) and dizziness. However, a substantial number of patients may not experience a rapid pulse or any distinct symptoms, highlighting the necessity of accurate screening and diagnosis.

Diagnosis often involves wearing a 24-hour Holter monitor to continuously record the heart's electrical activity. Once AFib is confirmed, a patient's risk profile—considering age, blood pressure, and diabetes status—is assessed. Treatment frequently includes taking anticoagulants (blood thinners) to mitigate the high risk of stroke. Healthcare professionals recommend that individuals, especially those over 65, regularly check their pulse for any irregularities, a task now made easier with devices like blood pressure monitors and smartwatches.

Alcohol: A Critical Trigger 

Prevention hinges on avoiding triggers such as overwork, heavy drinking, smoking, and excessive caffeine intake. For those suspected of having arrhythmia, emotional excitement and strenuous physical activity—both of which accelerate the heart rate—should be limited.

Critically, AFib episodes frequently occur in the evening or the day after drinking. Palpitations felt during this time are often mistaken for a mere hangover and ignored. This is a severe mistake, as AFib patients face a fivefold greater risk of stroke compared to the general population. Any suspicion of an irregular heartbeat following alcohol consumption should be viewed as a critical warning sign requiring immediate medical attention.