ECG Analysis Module 1 PDF

Electrocardiography (ECG) Part 2: ECG Analysis ECG Electrodes and Leads Atwood , Stanton, & Storey-Davenport, ECG Electrodes and Leads (continued) Limb Leads Chest Leads Atwood , Stanton, & Storey-Davenport, U...

Electrocardiography (ECG) Part 2: ECG Analysis ECG Electrodes and Leads Atwood , Stanton, & Storey-Davenport, ECG Electrodes and Leads (continued) Limb Leads Chest Leads Atwood , Stanton, & Storey-Davenport, Urden, Stacy, & Lough, 2022 Urden, Stacy, & Lough, 2022 Baseline Isoelectric Line Atwood , Stanton, & Storey-Davenport, Wandering Baseline Atwood , Stanton, & Storey-Davenport, Analysis and Measuring of a Strip Analysis of a Strip: Measuring a Strip: Rhythm Using calipers Rate Using paper P:QRS Ratio PR Interval QRS Interval Analysis Analysis of a Strip: Rhythm Rhythm o Regular = consistent intervals o Regularly irregular = irregular but with repeating patterns o Irregular = No pattern Urden, Stacy, & Lough, 2022 Rate Determination Number of RR intervals in 6 sec times 10 If Atrial and Vent. rate differ, measure both rates Atwood , Stanton, & Storey-Davenport, Rate Determination (continued) Can only use this methods if rhythm is regular Atwood , Stanton, & Storey-Davenport, P Waves Atwood , Stanton, & Storey-Davenport, P Waves (continued) Urden, Stacy, & Lough, 2022 Atwood , Stanton, & Storey-Davenport, Analysis of a Strip: P:QRS Ratio Is there a p for every QRS? Atwood , Stanton, & Storey-Davenport, PR Interval Beginning of P wave to beginning of QRS 0.12 to 0.20 Indicates AV nodal function Urden, Stacy, & Lough, 2022 QRS Interval Beginning of QRS complex to end of QRS < 0.12 Indicates ventricular depolarization Urden, Stacy, & Lough, 2022 QRS Complexes Atwood , Stanton, & Storey-Davenport, QRS Complexes (continued) Urden, Stacy, & Lough, 2022 QT Intervals Measured from Q to end of T Normally ½ of R-R Indicates depolarization and repolarization of the ventricles Urden, Stacy, & Lough, 2022 QT Intervals (continued) Measured beginning of QRS to end of T wave Normal < 0.44 (less than ½ of R-to-R interval) Urden, Stacy, & Lough, 2022 ST Segment Measured from end of S wave to beginning of the T wave Is the ST segment elevated or depressed? Can indicate ischemia or infarction Atwood , Stanton, & Storey-Davenport, ST Segment (continued) Atwood , Stanton, & Storey-Davenport, Ischemia and Infarction ECG changes indicating ischemia and infarction Urden, Stacy, & Lough, 2022 U Wave Follows T wave Not always seen Represents late repolarization of Purkinje fibers in papillary muscle Urden, Stacy, & Lough, 2022 Identify the Following Components Regular or irregular P:QRS ratio Rate QRS interval PR interval Analysis Atwood , Stanton, & Storey-Davenport, Impact on the Patient? Cardiac Output Is my patient, ok? Rhythm: Signs of Decreased CO: o Rate: Is too fast or too slow? o Blood pressure o Normal physiologic filling: Are the o Signs of shock atrium filling the ventricle in a o Level of consciousness synchronous fashion? o Signs of acute heart failure o Normal contraction: Are the atria and o Ischemic chest pain ventricles contradicting normally? Does my patient need treatment? References Atwood, S., Stanton, C., & Storey-Davenport, J. (2019). Introduction to basic cardiac dysrhythmias. (5th ed.). Jones& Bartlett Learning. Urden, L. D, Stacy, K. M., &. Lough, M. E. (2022). Critical care nursing: Diagnosis and management (9th ed). Elsevier Mosby, Inc. You’ve reached the end of the presentation