Transcription of ECG Basics - Boston College
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ECG Basics - Boston College
ECG Basics Rebecca Sevigny BSN, RN, CCRN. DISCLOSURES. None of the planners or presenters of this session have disclosed any conflict or commercial interest Objectives Identify the conduction system of the heart and the components of the cardiac cycle Discuss a systematic approach to rhythm interpretation Review common cardiac arrhythmias Describe the process for interpretation of a 12 lead ECG. Pacemakers SA Node 60-100. 40-60. AV Junction 20-40. Purkinje Conduction: Normal P-QRS-T. Normal P-QRS-T. P Wave PR Interval QRS Complex ST Segment Represents Atrial atrial depolarization and Ventricular Interval between depolarization delay at the AV Node depolarization ventricular (AV conduction time) depolarization and repolarization Duration < seconds - seconds - seconds Measure from end of QRS (J-point) to Height < mm Measure start of P wave Q- First negative beginning of T wave to start of QRS deflection Shape Smooth Prolonged indicates a R- First positive In relation to iso- conduction block deflection electric line: Orientation Positive in Leads I,II,aVF, V4 Shortened indicates S- Negative deflection Depression/Negative accelerat
Discuss a systematic approach to rhythm interpretation . Review common cardiac arrhythmias . Describe the process for interpretation of a 12 lead ECG
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