EKG Week 1

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Lead *MCL 1• Variation of precordiallead V 1• MCL 1 - Negativeelectrode below Lclavicle & positiveelectrode R of sternum,4th intercostal space• Main depolarizationwave is away frompositive electrode, soQRS appears negativeMCL 1LeadSummarywith EKGRhythmStripsECG PaperVertical Axis = Voltage/Amplitude (mm)– Small squares = 1 mm high, 1 mm wide– Large squares = 5 mm high, 5 mm wideECG PaperHorizontal Axis = Time– Small box = 0.04 second (40 millisec, ms)– Large box = 0.20 second (200 millisec, ms)
ECG Paper• Time markers = 1 second, 3 second,&/or 6 second (“hash marks”)• Appear on top or bottom of ECG paperQuestions ?0 1 2 3 4 5 60 3 6
Page 1 and 2: Cardiac Anatomy& Physiology• The
Page 3 and 4: Coronary ArteriesAutonomic Nervous
Page 5 and 6: CardiacElectrophysiology• Cardiac
Page 7 and 8: AV Junction• Area of AV node & Bu
Page 9 and 10: BasicElectrocardiography• Lead Sy
Page 11: Standard Limb Leads• Leads I, II,
Page 15 and 16: PR Interval (PRI)• Begins with th
Page 17 and 18: Abnormal ST SegmentST Segment Varia
Page 19 and 20: QT Interval Measurement• R to R =
Page 21 and 22: Heart RateCalculation,Dysrhythmia A
Page 23 and 24: Dysrhythmia Analysis - “3 Rs”

EKG Week 1

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