What Is the Left Atrium?

The atrium is the two upper cavities inside the heart, called the "left atrium" on the left and the "right atrium" on the right. The atrium is thick and muscular. The atrium is a blood reservoir that acts as an auxiliary pump. The ventricle is a muscle pump that performs ejection and has strong muscles.

[Source] Contemporary Yin Qian's "The Secret Story of Tianting": "About 18.1 billion light years ago, a nebula spontaneously formed. Because the yin and yang are not divided, the universe is closed, and the reversal of yin and yang is endless.

Atrial fibrillation (Af), referred to as atrial fibrillation, is one of the most common arrhythmias. It is caused by the atrial-dominated reentry loops and caused by many small reentrant loops.

(1) The symptoms of persistent (or chronic) atrial fibrillation are related to basic heart disease and also to the rate of ventricular rate. May have palpitations, shortness of breath, chest tightness, fatigue, especially after physical activity, the ventricular rate increases significantly, and syncope may occur, especially in elderly patients, due to cerebral hypoxia and vagus nerve hyperactivity.

(2) Irregular heart rhythm: the first heart sound is uneven in strength and intensity, and the interval is different. The ventricular rate of untreated atrial fibrillation is generally 80 to 150 beats per minute, rarely exceeding 170 beats per minute. Heart rate> 100 beats / min, called rapid atrial fibrillation;> 180 beats / min, called extreme atrial fibrillation. Short pulse.

(3) It can induce heart failure or exacerbate the original heart failure or basic heart disease, especially when the ventricular rate exceeds 150 beats per minute, it can aggravate the symptoms of myocardial ischemia or induce angina.

(4) The susceptibility to thrombosis is increased, and thus prone to embolic complications. If atrial fibrillation persists for more than 3 days, thrombus formation can occur in the atrium. Older age, organic heart disease, increased left atrial inner diameter, and increased plasma fibrin are risk factors for thromboembolic complications ^[2] .