Sinus tachycardia is indicated on ECG with a normal upright P wave in lead II preceding every QRS complex (indicating that the pacemaker is coming from the sinus node and not elsewhere in the atria) ...

Background Inappropriate sinus tachycardia (IST) is characterized by persistent and disproportional elevation of heart rate (HR). Ivabradine has been successfully used in some patients. Methods Twenty ...

Among cancer patients who have tachycardia but who have not had a medical condition that is associated with tachycardia, such as pulmonary disease or thyroid disease, overall mortality risk is ...

WASHINGTON -- Unexplained sinus tachycardia was associated with a significantly higher rate of all-cause mortality in patients with cancer, a retrospective study found. Among over 600 patients, the ...

Carotid sinus massage is a major diagnostic test for carotid sinus hypersensitivity, which may be manifested as dizziness or syncope. Carotid sinus massage is also used in emergency settings to ...

Supported by a grant (HE 12373) from the Public Health Service and a grant from the San Diego County Heart Association. We are indebted to Dr. David B. Carmichael, who referred the patient for ...

We’re only a few days into the new year and the Apple Watch is already being credited with saving lives. Talk about new year, new you! Jorge Freire Jr. was returning home when his Apple Watch alerted ...

Polymorphic ventricular tachycardia is an abnormal heart rhythm where the bottom chambers of your heart beat too quickly. People with severe cases may experience sudden cardiac arrest. Conditions that ...