Sinus tachycardia: Definition, Causes, Symptoms, Treatment, Medical Examination and Consultation doctor
Sinus tachycardia: Definition
Heart rhythm disorder characterized by the presence of tachycardia, that is to say, a normal increase in heart rate (also called sinus rhythm). This increase in heart rate does not exceed or rarely 150 beats per minute.
This definition sinus tachycardia for adults only.
The heart beats normally at a rate between 60 and 80 beats per minute, which corresponds to a rhythm called sinus rhythm. The term comes from sinus, which is a small area of the myocardium (heart muscle) located at the right atrium. This location is also called the sinus node or sinoatrial (named after two British researchers Arthur Keith and Martin Flack, which discovered it). Its role is to ensure control of heart rate. It is a set of small and highly specialized muscle cells located in the wall of the right atrium. At this point, is the start of the electrical pulse that will be used to make the heart beat: the pulse delivered by the sinoatrial node causes contractions of the heart chambers. Sinus tachycardia has a beginning and an end progressive.
Sinus tachycardia: Causes
This is actually a cardiac response in case of:
- Fever
- In hypovolemia (amount of blood in the body than normal
- On Anxiety
- In efforts
- Disorders of the thyroid gland
- In hypoxia or anoxia (lack of oxygen to the blood from the lungs)
- On hypotension
- In heart failure (malfunction of the heart pumped as such)
Sometimes it is secondary to physiological causes said that is normal to say:
- Effort physique
- Emotion
- Digestion
- Praised drugs such as atropine, vasodilators (drugs to enlarge the caliber of blood vessels), neuroleptics, antidepressants, thyroid hormones.
Coffee, strong tea, alcohol and tobacco are also likely to accelerate the heart rate.
Sinus tachycardia: Symptoms
Sinus tachycardia has one minute to change of pace (there called paroxysmal tachycardia others, which are usually regular, which means that their rhythm is always the same). Sinus tachycardia is slowed by the supine position.
Sinus tachycardia: Consultation doctor
A test (Valsalva test) causes slow sinus tachycardia. This test consists of compressing the finger's carotid arteries (arteries from each side of the neck). This operation should never be performed by someone other than the doctor. Indeed, the slowdown it causes can cause cardiac arrest.
Sinus tachycardia: Medical Examination
The electrocardiogram showed the presence of atrial P wave and normal conduction time between the atria and the ventricles.
Sinus Tachycardia: Treatment
Sinus tachycardias should not be treated as arrhythmia (arrhythmia). Indeed, they represent an additional demand of the body requiring increased work of the heart to increase the amount of blood reaching the organs and tissues and therefore, treatment should be that of the cause. If it is heart failure, the treatment will appeal to a drug based digitalis or diuretics (drugs for the patient to urinate). It may also be an oxygen, which comprises using oxygen in case of hypoxia, that is to say, when the amount of oxygen reaching the tissues in is inadequate. In case of fever, prescription medication with aspirin is sufficient, provided that the fever does not reflect a major infection. Anxiety can be treated by taking tranquilizers beginning if possible using valerian as gentle molecules associated or not with hawthorn, to monitor the emotional state.
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