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” sizes “responsive” size “content_title” =”(min-width: 320px) 320px, 100vw” src=”https://mmbiz.qpic.cn/mmbiz_gif/DnQ4d5VVDd5O8nbW4yVxf6am4L49KYENVx9DiaM1NJMBW81InMcjNanKTV4BQfwpicicPXnT5pX5OVwShTgxYUTWQ/640″ img=”600″ img The sympathetic nerve has an excitatory effect on cardiac activity, which can accelerate the heartbeat rate and the heartbeat force. The vagus nerve does the opposite.
Under normal conditions, the sympathetic and parasympathetic nerves with opposite functions are in a mutual balance restriction. In adults, sinus rhythm exceeding 100 beats per minute is called sinus tachycardia and is often associated with decreased sympathetic excitation and vagal tone.
1. what is it?
Physiological conditions can be caused by exercise, anxiety, emotional agitation, smoking, coffee, tea, etc.
Pathological sinus tachycardia can be caused by heart failure, acute myocardial infarction, acute myocarditis, shock, fever, infection, anemia, hyperthyroidism and other diseases cause. It can also be caused by the application of epinephrine, atropine and other drugs.
2. What are the discomforts of sinus tachycardia?
There will be palpitation, chest tightness, shortness of breath, sweating, dizziness, vertigo, fatigue and other discomforts, which can induce other arrhythmias Or the attack of angina pectoris, the heartbeat is mostly 100~150 beats/min.
3. How do doctors diagnose sinus tachycardia?
clinicalpatients underwent ECG and Holter monitoring. At about 130 times/min, individual can reach 160~180 times/min. Sustained sinus tachycardia 24h Holter recorded the total number of P waves should be > 144,000 times.
4. What should be paid attention to in daily life of sinus tachycardia?
Actively treat the primary disease and eliminate the incentives; quit< strong>Smoking and drinking, avoiding mental stress, and maintaining a good attitude. Don’t eat too full, generally around seven points full, remember don’t drink coffee or strong tea, this will excite the sympathetic nerves, which will cause the heart rate to increase. According to the doctor’s advice, do not add, reduce or stop any medication.
5. Does sinus tachycardia need treatment?
Generally physiological sinus tachycardia does not require treatment, just remove the trigger.
If it is caused by pathological factors, and the patient has discomfort such as palpitation, chest tightness, shortness of breath, etc., symptomatic drug treatment is required.
Such as sinus tachycardia caused by congestive heart failure, use digitalis preparations, beta-blockers, diuretics and vasodilators. For patients with sinus tachycardia mainly caused by sympathetic nerve excitation and increased catecholamines, β-blockers and sedatives can be used.
6. Prognosis of sinus tachycardia
The prognosis of sinus tachycardiais related to heart rate and underlying heart disease . If the heart rate does not exceed 150 beats/min, there is no structural heart disease and the prognosis is good. If there is structural heart disease, and the heart rate exceeds 150 beats/min, it will increase myocardial oxygen consumption, reduce cardiac output, and have a poor prognosis.
Get out of the misunderstanding and explain the common problems
Myth 1
Sinus tachycardia is a serious heart disease
Is it serious? Depending on the cause, sinus tachycardia, if it is physiological, will gradually disappear if the cause is removed. If it is caused by pathological factors, and the heartbeat is fast, accompanied by symptoms such as palpitation and chest tightness, it needs to be paid attention to and active treatment.
Myth 2
Having a sinus heartPhysical activity is not possible with tachycardia
If it is physiological and there is no discomfort, normal work can be performed. If if it is a pathological factor, needs to depend on the situation of treatment, the condition is very stable, there is no discomfort under the condition of taking the medicine, and he can also engage in general physical activities and work.
Myth 3
A diagnosis of sinus tachycardia requires medication
< strong>Physiological sinus tachycardia is a phenomenon of “adaptation”.
There are many factors that affect heart rate, such as normal physical activity, emotional agitation, full meal, drinking strong tea, coffee, smoking, drinking, etc., which can stimulate sympathetic nerves ,Rapid heartbeat. Postural changes, such as sympathetic nerve activation in the standing position, increase the heart rate; in the supine position, the heart rate slows down. Physiologically induced sinus tachycardia is often transient and of short duration, and relieves by removing the triggering factor< /strong>, so no medication is required.
Myth 4
Sinus tachycardia is inherited
Sinus tachycardia is not a hereditary disease and will not be passed on to the next generation.
Content source: People’s Health Publishing House published “Out of the Misunderstanding of Medical Treatment – Cardiovascular Department”
Chief Editor: HU Da
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