12 Lead ECG Interpretation
12 Lead ECG Interpretation
Deborah Klein, MSN, RN, ACNS-BC, CCRN, CHFN, FAHA
Clinical Nurse Specialist, Coronary ICU, Heart Failure ICU, Cardiac Short Stay/PACU/CARU Nursing Institute
? Cleveland Clinic 2017
Confid1ential
DOSOCxotoubrseer 20170
12 Lead ECG (or EKG)
? Heart is an electrical field; arms and legs are a linear
extension of this field
? ECG is a recording of the electrical activity of the heart
over a period of time
? Detected by electrodes attached to the surface of the skin
and recorded and displayed by a device external to the body
? Changes in electrical activity may indicate arrhythmias,
cardiac ischemia, or electrolyte imbalances
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Blood Supply
? LAD: anterior wall of LV, anterior septum, bundle
branches
? Left circumflex: left atrium, lateral wall LV, posterior wall
LV
? RCA: right atrium, right ventricle, bottom of LV, posterior
septum
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