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Paper Information

Journal:   CRESCENT JOURNAL OF MEDICAL AND BIOLOGICAL SCIENCES   APRIL 2016 , Volume 3 , Number 2; Page(s) 37 To 39.
 
Paper: 

THE EFFECTS OF MENSTRUAL CYCLE ON CARDIAC CONDUCTION SYSTEM (EDITORIAL)

 
 
Author(s):  DOGAN MEHMET, AKPAK YASAM KEMAL, YIGINER OMER*
 
* GATA HAYDARPA?A TRAINING HOSPITAL, DEPARTMENT OF CARDIOLOGY, ISTANBUL, TURKEY
 
Abstract: 

Women’s cardiac conduction system shows some physiological differences compared to men’s. Resting heart rate is higher and QT and corrected QT (QTc) intervals are longer in women. Additionally, female gender is an independent risk factor for drug-related torsades de pointes and congenital long QT syndrome. Sudden cardiac death incidence is higher in women when excluding coronary artery disease and structural heart diseases. QT interval defines the duration from the beginning of the QRS complex until the end of the T wave and refers to the period of ventricular myocardium activation and repolarization. It may vary according to age, gender, pregnancy condition and the heart rate. QT prolongation and shortening may reflect some pathological conditions. QT prolongation occurs in ischemic heart disease, cardiomyopathy, mitral valve prolapse and the use of certain anti-arrhythmic drugs. QT shortening is seen in patients with hypercalcemia and under digitalis treatment. Prolongation of the QT interval can lead to fatal arrhythmias such as ventricular tachycardia and ventricular fibrillation.

 
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