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Understanding Sinus Tachycardia


Author: Nicky Pilkington

Before you can really understand what sinus tachycardia is you must first know what part of the body we are discussing. This ailment has nothing what so ever to do with your sinus cavities, but has plenty to do with your heart.
The sinus node or the sinortrial is a small group of cells that are found in the upper right chamber or the atrium of your heart. The sinus node contains cells that most people call the pacemaker cells, which generate the electrical signals that control the rhythm and pace of your heartbeat. These signals travel from the sinus node to the AV node and then is sent to the ventricles that pump the blood to the rest of your blood.
When a person has sinus tachycardia the rhythm of the heart rate impulses that are generated from the sinus node are elevated. This elevated rate is greater than 100 beats per minute on average in an average adult. Normal heart in adults ranges from 60 to 100 beats per minute however; heart rate does vary with age.
Causes of sinus tachycardia are normal physiological situations such as exercise. However, there are several other situation that cause the heart rate to rise such as fright, stress, flight, anger, dehydration, anxiety, fever, hypovolemia with hypotension and shock, malignant hyperthermia, heart failure, anemia, pheochrimocytoma, hyperthyroidism, pulmonary embolism, sepsis, chronic pulmonary disease, acute coronary ischemia, myocardial infarction, hypoxia and the intake of illicit drugs, nicotine, and caffeine.
Symptoms are hard to determine without a doctors examination and the help from an EKG. The most noticeable symptoms include palpitations, lightheadedness and fatigue.
There are two types of sinus tachycardia that are inappropriate and postural orthostatic tachycardia syndrome.
With inappropriate or chronic nonparoxysmal sinus tachycardia you will have an elevated resting heart rate or an inflated heart rate when exercising. Most of the patients with this disorder have no prior history of heart disease or other causes of the ailment. Many believe it is due to abnormal autonomic control.
Postural orthostatic is often seen in women with no heart problems. This ailment is characterized by normal resting heart rate but inflated postural sinus tachycardia without orthostatic hypotension.
If you have been diagnosed with sinus tachycardia your physician may prescribe beta-blockers, however, many people prefer to use herbal treatment as well. A combination of both has proven very successful. Herbal treatments will enhance heart function, remove blood clots, improve the blood flow, and boost energy and aid in the health and quality of life.

Article Source: http://www.articlesbase.com/health-articles/understanding-sinus-tachycardia-59351.html

About the AuthorFor more information about Sinus Tachycardia and sinus problems you can check out sinusitis.org.uk

5 thoughts on “Understanding Sinus Tachycardia

  1. Hmmmmmmm!!!! how about this>>>
    According to Dr. Cutler, “Balloon dilation in the clinic provides physicians with a tool to treat persistent sinus disease without requiring general anesthesia and these results demonstrate that dilation of the sinus drainage pathways in the clinic is safe and well-tolerated by patients and provides long-term relief of sinus-related symptoms”.
    Entellus Medical, a Minnesota-based medical technology company, shared the results of a 12-month study entitled “Clinic versus OR – A Comparative Analysis of Ostial Dilation for CRS,” presented on September 25th during the 56th annual meeting of the American Rhinologic Society in Boston, Mass.

  2. Abstract
    Inappropriate sinus tachycardia is an ill-defined clinical syndrome characterized by an increased resting heart rate accompanied by an exaggerated response to exercise or stress. It is not associated with underlying structural heart disease. The mechanism may involve a primary abnormality of the sinus node demonstrating enhanced automaticity or, alternatively, a primary autonomic disturbance with increase sympathetic activity and enhanced sinus node beta-adrenergic sensitivity. The diagnosis of inappropriate sinus tachycardia is one of exclusion. It is most common in young females, with a disproportionate number employed in the health care field. Autonomic and electrophysiologic testing may be required in selected individuals to clarify the mechanism and rule out sinus node reentry or right atrial tachycardia. Therapy of inappropriate sinus tachycardia is empiric. Pharmacologic approaches include beta blockers or verapamil. Radiofrequency catheter ablation of the superior portion of the sinus node shows promise as a useful alternative in patients with refractory symptoms.

    Sims JM. Miracle V. Sinus tachycardia. Nursing. 26(6):49, 1996 Jun.

    Sinus tachycardia (also colloquially known as sinus tach or sinus tachy) is a heart rhythm with elevated rate of impulses originating from the sinoatrial node, defined as a rate greater than 100 beats/min in an average adult. The normal heart rate in the average adult ranges from 60–100 beats/min. Note that the normal heart rate varies with age, with infants having normal heart rate of 110–150 bpm to the elderly, who have slower normals.


    Tachycardia is often asymptomatic. If the heart rate is too high, cardiac output may fall due to the markedly reduced ventricular filling time. Rapid rates, though they may be compensating for ischemia elsewhere, increase myocardial oxygen demand and reduce coronary blood flow, thus precipitating an ischemia heart or valvular disease. Sinus tachycardia accompanying a myocardial infarction may be indicative of cardiogenic shock.


    Not required for physiologic sinus tachycardia. Underlying causes are treated if present.

    Acute myocardial infarction. Sinus tachycardia can present in more than a third of the patients with AMI but this usually decreases over time. Patients with sustained sinus tachycardia reflects a larger infarct that are more anterior with prominent left ventricular dysfunction, associated with high mortality and morbidity. Tachycardia in the presence of AMI can reduce coronary blood flow and increase myocardial oxygen demand, aggravating the situation.

    Practically, many studies showed that there is no need for any treatment.

    Source: http://en.wikipedia.org/wiki/Sinus_tachycardia

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