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2553 conditionsPage 271 of 284

Internal MedicineCardiovascular Medicine

Sinus bradycardia

The rhythm of a normal heartbeat is called sinus rhythm, which originates from the regular discharge of cells in the heart's sinoatrial node, with a discharge frequency typically between 60 and 100 beats per minute in adults. When the adult sinus rhythm frequency is below 60 beats per minute, it is called sinus bradycardia. Sinus bradycardia can be observed in healthy adults, especially athletes, the elderly, and during sleep. For these asymptomatic healthy adults with a heart rate below 60 beats per minute, this is not a disease but a normal phenomenon. Only when the heart rate is too slow, leading to insufficient blood supply from the heart to the entire body, will it cause corresponding symptoms or even serious consequences.

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Internal MedicineCardiovascular Medicine

Hypertrophic obstructive cardiomyopathy

The interventricular septum is located between the left and right ventricles. Hypertrophic obstructive cardiomyopathy refers to a condition where the patient's interventricular septum is highly thickened and protrudes into the left ventricular cavity, obstructing the left ventricular outflow tract during cardiac contraction, thereby causing a series of symptoms. The prevalence of hypertrophic obstructive cardiomyopathy in China is 0.04% to 0.4%, and it is the leading cause of sudden death in adolescents and athletes. Males are more susceptible to the disease than females, but females tend to develop symptoms earlier.

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Disease Database

Sinus bradycardia

Hypertrophic obstructive cardiomyopathy

Sick sinus syndrome

Bradycardia

Atrial tachycardia

Sinus arrhythmia

Atrioventricular block

Secondary hypertension

Patent Foramen Ovale