CVRN CERTIFICATION: ECG ESSENTIALS EXAM WITH GUARANTEED ACCURATE ANSWERS

Normal PR interval - ACCURATE ANSWERS 0.12-0.20 seconds Normal QRS complex - ACCURATE ANSWERS 0.05 - 0.09 seconds QT interval - ACCURATE ANSWERS 0.40-0.43 V1 Lead - ACCURATE ANSWERS 4th intercostal space RSB; lead needs to be placed here LA Lead avL - ACCURATE ANSWERS High lateral wall; look here for wide QRS complexes LL Lead avF - ACCURATE ANSWERS Inferior wall; gives us information about sinus atrial and junctional rhythms RA Lead avR - ACCURATE ANSWERS RV infarcts and LV ectopy Anterior wall - ACCURATE ANSWERS Not monitored in cath lab; monitor for reciprocal changes in inferior leads Normal Shape in Lead V1 - ACCURATE ANSWERS P waves: inverted, upright, or diphasic QRS: inverted RS T waves: gently inverted U waves: upright ELECTRICITY MOVES AWAY FROM V1 (See manual for image) Normal Shape in V6 - ACCURATE ANSWERS P Waves: upright QRS Complexes: upright QRS T waves: upright U waves: upright Normal Shape in Lead 2 - ACCURATE ANSWERS P waves: upright and rounded QRS Complexes: upright T waves: upright and smaller than QRS U waves: upright Main Causes of Positive Wide QRS Complex in V1 - ACCURATE ANSWERS Right Bundle Branch Block Left Ventricular Ectopic Beats or Rhythm Wolf-Parkinsonian White Syndrome