Transcription of 心電圖判讀 - tsgh.ndmctsgh.edu.tw
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心電圖判讀 - tsgh.ndmctsgh.edu.tw
109 03 15 B46 PGY UGY 1. 2. 3. 4. 5. 6. 7. 8. 9. 1. 2. 3. 4. 5. 6. 7. 8. 9. 1. Basic knowledge of ECG Electrocardiography (ECG or EKG) Basic knowledge of ECG Einthoven s triangle V1&V6 QRS : EKG WAVEFORMS . P wave: . QRS wave: . T wave: : EKG WAVEFORMS QRS complex : : Q wave : R wave : S wave Standard: normal, half or double Intervals Normal Intervals PR: to QRS: to QT: < (varies) ST: isoelectric Rate 60 / RR interval in sec 300/ 1 =300 4 =75 2 =150 5 =60 3 =100 6 =50 Long lead II R wave x 6 60 / sec = 68 /min Axis Normal axis: 0 ~90o ( lead I , AVF more positive) LAD: < -30o (lead II more negative) RAD: > 90o ( lead I more negative) Superior Axis deviation(North-west direction) Normal Limits of QRS Axis in Adults: -30 to +90.
Posterior wall: Tall R wave and ST depression at V1-V3 ( mirror image) RV infarction: ST elevation in V4R . Reciprocal changes . Hyperacute T wave change . …
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