Arrhythmia

Normal Electrocardiogram P – Atria depolarization QRS – Ventricle depolarization PR – Conduction AV T – Ventricle repolarization QT – duration ventricle of repolarization

Differential Diagnosis Cause Disease Arrhythmias e.g. Bradycardia , Tachycardia, AV block Nonarrythmic cardiac causes ASD,VSD,Cardiomyopathy,CHD,CHF,MVP,Pericarditis, Vulvular heart disease Extracardiac causes Anemia,E’lyte imbalance,Hyperthyroidism, Hypoglycemia,Hypovolemia,Pulmonary disease Psychiatric causes Anxiety disorder,Panic attacks Drugs ang medications Alcohol,Caffeine,Cardiac drug:Digitalis,Beta agonists,Theophyline,Phenothiazine