EKG Week 1

Recommendations

Info

Abnormal T Waves• T waves may be flat, inverted, or biphasic• Flat or negative (inverted) T waves suggestmyocardial ischemia or hypokalemia (Ô K)• Tall, pointed (peaked) T waves are commonlyseen in hyperkalemia (Ó K)T WaveVariationsQT Interval• Reflects time of totalventricular activity• Duration of QT intervalvaries with gender & HR• When corrected for HR,written as QT c• HRÓ, QT interval Ô17● HRÔ, QT interval Ó• Normal QT Interval (HR 60-90) is 0.44 sec(440 ms) or less.18QT Interval Measurement• Measured from the beginning of QRScomplex to end of T wave• Measure the # of boxes bet. 2 Rwaves (R-R interval), divide by 2• Measure the QT interval - if QT isless than ½ the R-R interval, it’sprobablynormal(HR 60-90)1920
QT Interval Measurement• R to R = 11 small boxes = 0.44 sec• Divided by 2 = 0.22 sec R to R = 0.22 sec• QT Interval = 4½ small boxes = 0.18 sec• QT of 0.18 sec is less than R to R of 0.22 sec(HR=136)Normal QT Interval0.44sec (HR=50)Prolonged QTInterval0.56 sec (HR=40)QT Interval Charts• Shows HRs & QT max (ms) for male & female• QT should not vary above normal max for HR• QT over max, vulnerable for vent. dys. (VT, VF)2122WaveformReviewSegments & IntervalsReview122324
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 and 12: Standard Limb Leads• Leads I, II,
Page 13 and 14: ECG Paper• Time markers = 1 secon
Page 15 and 16: PR Interval (PRI)• Begins with th
Page 17: Abnormal ST SegmentST Segment Varia
Page 21 and 22: Heart RateCalculation,Dysrhythmia A
Page 23 and 24: Dysrhythmia Analysis - “3 Rs”

EKG Week 1

Create successful ePaper yourself

Delete template?

Save as template?