ECG.pdf

Radiology Department Physiology Lab 5 First Stage Electrocardiogram (ECG) By Dr.Haijar Haider M.B.CH.B Principles of Electrocardiograph Electrocardiograph – is the instrument that records the electrical activi...

Radiology Department Physiology Lab 5 First Stage Electrocardiogram (ECG) By Dr.Haijar Haider M.B.CH.B Principles of Electrocardiograph Electrocardiograph – is the instrument that records the electrical activity of the heart Electrocardiogram (ECG) is the record of that activity Electrophysiology Pacemaker = sinoatrial node ❖ Impulse travels across atria ❖ Reaches AV node ❖ Transmitted along interventricular septum in Bundle of His ❖ Bundle splits in two (right and left branches) ❖ Purkinje fibers ❖ Electrode placement For the chest electrodes V1 4th intercostal space right sternal edge.V2 4th intercostal space left sternal edge V4 over the apex (5th ICS mid-clavicular line) V3 halfway between V2 and V4 V5 at the same level as V4 but on the anterior axillary line V6 at the same level as V4 and V5 but on the mid-axillary line ECG show ST elevation in myocardial infarction (MI) Thank you ❤