Bradycardia

Introduction Bradycardia is a pathological phenomenon in which abnormal pulsation is caused by heart disease. The heart rate of normal adults is between 60 and 100 beats per minute. If more than 100 times is called tachycardia, less than 60 times is called bradycardia. . Tachycardia can attract people's attention, but in clinical work, bradycardia is often overlooked, especially young and middle-aged.

Cause

Cardiovascular disease: acute myocardial infarction, myocarditis, endocarditis, pericarditis, sinus node, chronic ischemic heart disease, sinus node inflammation, sinus node thrombosis, dilatation, inflammation, some myocardial Diseases such as amyloidosis, Fallot's quadruple syndrome or large vessel dislocation, microbes involving the heart, bleeding into the sinus node, familial sinus bradycardia, involving the central nervous system of the cardiac depression or accelerating central nervous system diseases, etc. Can cause bradycardia to occur.

an examination

Related inspection

ECG dynamic electrocardiogram (Holter monitoring)

You can do a 24-hour Holter holter check to detect the heart rate and rhythm of the day. To determine whether nighttime heart rate is too slow, sinus arrest, sinus block, and atrioventricular block are manifested as long-term cardiac arrest. The causes of this condition are sick sinus syndrome, degeneration of conduction system, congenital atrioventricular conduction tissue, myocarditis, myocardial infarction and so on. It is very dangerous to have a stroke time of more than 3 seconds, which can cause malignant ventricular arrhythmia, leading to sudden death to guide further treatment.

Differential diagnosis

1. Sinus conduction block: After sinus conduction block in the injection of atropine or exercise, the heart rate can be multiplied, while sinus bradycardia gradually accelerates.

2. Fetal bradycardia: seen in paroxysmal sinus bradycardia (enhanced vagal tension), persistent sinus bradycardia (sinus ganglion dysfunction, maternal hypothermia, long QT syndrome), 2 or 3 degree compartment Conduction block, in addition, is not common in atrial premature beats.

The material in this site is intended to be of general informational use and is not intended to constitute medical advice, probable diagnosis, or recommended treatments.