takükardia

Tachycardia is a medical term used to describe a heart rate that is faster than normal. For adults at rest, a heart rate exceeding 100 beats per minute is typically considered tachycardia. The normal resting heart rate for adults usually ranges between 60 and 100 beats per minute. However, this can vary based on factors such as age, fitness level, and overall health. Infants and children naturally have higher resting heart rates than adults.

There are several types of tachycardia, categorized by the origin of the rapid heartbeat within the heart. Some common types include sinus tachycardia, which is a normal response to exercise, fever, or stress, and supraventricular tachycardia (SVT), which originates in the upper chambers of the heart. Ventricular tachycardia (VT) originates in the lower chambers and can be more serious.

Causes of tachycardia are diverse and can range from benign to life-threatening. These can include physical exertion, emotional stress, fever, dehydration, anemia, hyperthyroidism, certain medications, illicit drug use, and underlying heart conditions such as heart disease or congenital heart defects.

Symptoms of tachycardia can vary depending on the underlying cause and the severity of the condition. Some individuals may experience no symptoms, while others might feel palpitations (a sensation of a racing or pounding heart), shortness of breath, chest pain, dizziness, lightheadedness, or even fainting. If persistent or accompanied by severe symptoms, medical attention is recommended to diagnose the cause and initiate appropriate treatment.