The following points highlight the six major cardiac disorders that occurs in human body. The disorders are: 1. Heart Block 2. Ventricular Premature Beat 3. Ventricular Paroxysmal Tachycardia 4. Ventricular Fibrillation 5. Ischaemic Heart Disease 6. Myocardial Infarction. Cardiac Disorder # 1. Heart Block: Heart block is the condition when conduction of impulse from pacemaker area through the conducting tissue [...]
In this article we will discuss about the transmission of cardiac impulse of humans with the help of suitable diagram. 1. Conduction over Atrial Muscle: Cardiac impulse originated at the S.A node is transmitted over both the atria like concentric waves and thus the P wave is produced in E.C.G. (Electrocardiogram). The spread of electrical impulse through the S.A. node [...]
The following points highlight the three main electrocardiographic leads of human body. The leads are:- 1. Standard Limb Leads 2. Augmented Unipolar Limb Leads 3. Chest Leads. 1. Standard Limb Leads: The action current of the heart is recorded by placing two electrodes in two different positions in the body. (Fig. 7.62) Such arrangement of lead is called bipolar leads. [...]