Inappropriate sinus tachycardia (IST) occurs when the heart beats very quickly without a good reason. It is a type of heart rhythm abnormality called an arrhythmia. Tachycardia is the medical term for a fast heart rate.
How is ist diagnosed?
Diagnosis of IST is based on the criteria of resting heart rate greater than 100 bpm with average heart rate exceeding 90 bpm on 24-hours Holter monitor, in symptomatic patients [3, 6].
Is inappropriate sinus tachycardia serious?
Inappropriate sinus tachycardia (IST) is not a life threatening condition although for some people it can have major effects on their day to day life. There is no proof that having IST increases the risk of other heart problems.
Can tachycardia cause a heart attack?
Complications of tachycardia depend on the type of tachycardia, how fast the heart is beating, how long the rapid heart rate lasts and if you have any other heart conditions. Possible complications include: Blood clots that can cause a stroke or heart attack. Inability of the heart to pump enough blood (heart failure)
Can IST go away?
In some people, IST starts after an infection from a virus. In this situation, people may have their symptoms go away suddenly after several months to a few years.
Why is ECG abnormal?
An abnormal ECG can mean many things. Sometimes an ECG abnormality is a normal variation of a hearts rhythm, which does not affect your health. Other times, an abnormal ECG can signal a medical emergency, such as a myocardial infarction /heart attack or a dangerous arrhythmia.
What are the symptoms of sinus tachycardia?
What are the symptoms of inappropriate sinus tachycardia?Sensation of a rapid heartbeat (palpitations), which may be uncomfortable.Shortness of breath.Dizziness.Fainting.Chest pain.Anxiety.Headaches.Decreased ability to exercise.
What is the best medication for tachycardia?
Beta blockers If youve been diagnosed with tachycardia, your doctor may prescribe a beta-blocker. Beta-blockers stop the action of the hormone adrenaline. This can relieve your tachycardia by slowing your heart rate. It can also lower your blood pressure and decrease the stress on your heart.
Does IST go away on its own?
A viral infection can lead to IST in some people. In those cases, symptoms sometimes go away suddenly in a few months or years.
What exercise is best for tachycardia?
While the type of exercise you can do depends on your arrhythmia, Erica says that the rule of thumb is to choose cardio over weightlifting. “Anything where you have to lift weight can stress your heart. Instead, try cardio or yoga.
How do you know if your ECG is abnormal?
AF may be detected first during a routine vital signs check. If the patient has a new irregular heart rate or an abnormally fast or slow heart rate, obtain a 12-lead ECG and look for an irregularly irregular rhythm and fibrillation (f) waves, the two hallmarks of AF.
What is a normal ECG reading?
Normal intervals Normal range 120 – 200 ms (3 – 5 small squares on ECG paper). QRS duration (measured from first deflection of QRS complex to end of QRS complex at isoelectric line). Normal range up to 120 ms (3 small squares on ECG paper).
What is the treatment for sinus tachycardia?
Treatments for sinus tachycardia focus on lowering the heart rate to normal by treating the underlying cause, such as infection or low blood pressure. Doctors may also recommend lifestyle changes, medications, and medical procedures, such as catheter ablation.