Diagnosis
To diagnose sinus tachycardia, a doctor needs to check your medical history and do a physical exam. After that, some additional tests can be performed to confirm the presence of this condition. These include urinalysis, thyroid function tests, or blood tests. If your doctor wants to know more about your heart functions, you might be asked to wear a Holter monitor for at least 1 day. This medical device can help measure your heart rate and detect any unusual activities. [5]
