What is the Cause of Increased Heart Beat?

March 28, 2024 | by Yashaswi Pathakamuri | Posted in FAQ's

Increased Heart Beat

An increased heart rate, also known as tachycardia, can have various causes, ranging from normal physiological responses to underlying medical conditions. Some common causes of increased heart rate include:

  • Physical activity: During exercise or physical exertion, the body’s demand for oxygen and nutrients increases, leading to a temporary increase in heart rate to supply more blood to the muscles and tissues.
  • Stress or anxiety: Emotional stress or anxiety can trigger the release of stress hormones such as adrenaline, which can stimulate the heart and lead to an increased heart rate.
  • Fever: Elevated body temperature associated with fever can lead to an increased heart rate as the body works to regulate temperature and fight off infection.
  • Dehydration: When the body is dehydrated, blood volume decreases, which can cause the heart to beat faster to maintain blood pressure and circulation.
  • Caffeine or stimulant use: Consumption of caffeine, nicotine, or other stimulants can stimulate the heart and lead to an increased heart rate.
  • Certain medications: Some medications, such as decongestants, bronchodilators, thyroid medications, and certain antidepressants or stimulants, can cause tachycardia as a side effect.
  • Hormonal changes: Hormonal fluctuations, such as those occurring during menstruation, pregnancy, or menopause, can affect heart rate.
  • Underlying medical conditions: Various medical conditions can cause tachycardia, including:
    • Arrhythmias: Abnormal heart rhythms, such as atrial fibrillation, supraventricular tachycardia (SVT), or ventricular tachycardia (VT).
    • Heart disease: Conditions such as coronary artery disease, heart failure, or valve disorders can lead to an increased heart rate.
    • Hyperthyroidism: Overactivity of the thyroid gland can lead to excess production of thyroid hormones, which can increase heart rate.
    • Anemia: Decreased oxygen-carrying capacity of the blood due to anemia can cause the heart to beat faster to compensate.
    • Infection or inflammation: Conditions such as sepsis, pneumonia, or myocarditis (inflammation of the heart muscle) can lead to tachycardia as the body responds to infection or inflammation.

It’s important to note that while some causes of increased heart rate may be benign and temporary, others may be indicative of underlying medical conditions that require evaluation and treatment by a healthcare professional. Persistent or severe tachycardia, especially accompanied by other symptoms such as chest pain, shortness of breath, dizziness, or fainting, should be promptly evaluated by a doctor.

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