Tachycardia is a condition where the heart rate is abnormally fast, exceeding 100 beats per minute.
Tachycardia can result from factors such as stress, fever, anemia, or heart-related issues like atrial fibrillation.
It may lead to symptoms like dizziness, shortness of breath, or chest pain.
Tachycardia can be broadly categorized into atrial and ventricular types.
Atrial fibrillation, a common form of atrial tachycardia, involves rapid, irregular contractions of the heart's upper chambers.
Ventricular tachycardia originates in the heart's lower chambers and can be more serious, potentially leading to life-threatening complications.
Bradycardia is when the heart rate is slower than normal, usually less than 60 beats per minute.
Bradycardia may be caused by aging, certain medications, or heart problems affecting the electrical signals.
It can be caused by issues with the heart's natural pacemaker (the sinoatrial node) or disruptions in the electrical pathways that coordinate heartbeats.
Conditions like sick sinus syndrome or heart block can contribute to bradycardia.
Symptoms of bradycardia can include fatigue, fainting, or difficulty concentrating.
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