The Normal ECG 0.0 / 5 ? Applied ScienceECGGCSENone Created by: livCreated on: 19-10-21 15:36 What is lead I? From right arm to left arm. 1 of 41 What is lead II? From right arm to left leg 2 of 41 What is lead III? From left arm to left leg 3 of 41 What is aVR? From right arm to between lead III 4 of 41 What is aVL? From left arm to between lead II 5 of 41 What is aVF? From left leg to middle of lead I 6 of 41 What is the normal cardiac axis? 90 to -30 7 of 41 What is the view of lead I? Lateral 8 of 41 What is the view of lead II? Inferior 9 of 41 What is the view of lead III? Inferior 10 of 41 What is the view of aVR Posterior 11 of 41 What is the view of aVL Lateral 12 of 41 What is the view of aVF? Inferior 13 of 41 What is the view of V1? Anterior / Septal 14 of 41 What is the view of V2? Anterior / septal 15 of 41 What is the view of V3? Anterior 16 of 41 What is the view of V4? Anterior 17 of 41 What is the view of V5? Lateral 18 of 41 What is the view of V6? Lateral 19 of 41 What does a P wave represent? Atrial depolarisation 20 of 41 What does the QRS complex represent? Ventricular depolarisation 21 of 41 What does the Q wave represent? Impulse going through bundle of His 22 of 41 What does the R wave represent? Impulse spreading through bundle branches 23 of 41 What does the S wave represent? Impulse spreading through Purkinje fibres 24 of 41 What does the T wave represent Ventricular repolarisation 25 of 41 Why can we not see atrial repolarisation on an ECG? It is hidden by the QRS complex 26 of 41 What is the normal duration of the PR interval? 0.12 - 0.20 seconds 27 of 41 What is the normal duration of the QRS complex? 0.10 - 0.12 seconds 28 of 41 What is the normal duration of the QT interval? Male <440ms Female <460ms 29 of 41 What is the normal duration of TP interval? 0.12 - 0.20 seconds 30 of 41 What is the normal duration of the RR interval? 0.60 - 1.2 seconds 31 of 41 What is RRPWQST Rate, Rhythm, P wave, Width, Q wave, ST segment, T wave 32 of 41 How do you calculate the rate? How many R waves in a period of 6 large squares and times by 10. 33 of 41 How do you work out the rhythm? Is there the same number of squares between each R wave or a variable number 34 of 41 What do P waves mean for the rhythm It is sinus rhythm 35 of 41 What should the width of the QRS complex be and what does it mean if it is wider? 3 small squares; wider means impulse is slow through ventricles 36 of 41 What might a deep Q wave mean? Could be due to an old MI 37 of 41 What might an elevated or depressed ST segment mean? An MI or pericarditis 38 of 41 What leads is the T wave usually inverted? aVR and V1 39 of 41 What is right axis deviation and what might be the cause? 90 and 180; right ventricular hypertrophy 40 of 41 What is left axis deviation and what might cause it? -30 and -90; left ventricular hypertrophy 41 of 41
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