12 Lead EKG Chapter 8 Worksheet



Select the best answer.LBBB, ventricular rhythms, left ventricle hypertrophy, pericarditis, and early repolarization all can mimic an MI because of ST segment elevation.TrueFalseIf a LBBB is present, the ST segment is ______ with a negatively deflected QRS complex falsely indicating a MI.DepressionInversionElevationVentricular rhythms may exhibit ST segment elevation that is not due to any infarct related causes.TrueFalseVentricle pacemaker rhythms create ST segment elevations that falsely indicate myocardial injury.TrueFalseVentricular enlargement implies the presence of Ventricle dilatationVentricular hypertrophyBoth ventricle dilatation and ventricular hypertrophyNeither ventricular dilatation or hypertrophyHypertrophy increases the QRS complex amplitude and is associated with ST depressionST elevationST depression and asymmetric T wavesT wave inversionLeft ventricular hypertrophy (LVH) does produce a wide QRS complex.TrueFalseTo determine LVH add the S wave amplitude in lead V1 to theS wave amplitude in V5R wave amplitude in V5S wave amplitude in V1Left ventricle hypertrophy ______ the amplitude because of the increase in electrical activity.DecreasesIncreasesWidensJ-point notching signifies the possibility of ST elevationST depressionA noninfarct cause of ST elevationPericarditis causes the illusion of ST elevation indicating an infarction.TrueFalseA diffuse EKG change such as ST elevation with PR segment depression is indicative of myocarditis.TrueFalseEarly depolarization produces ST segment elevation in the chest leads.True FalseIf the J-point isles than 25% of the T wave apex suspectMyocardial infarctionEarly repolarizationPericarditisA realistic initial goal is to recognize situations when ST segment elevation could be due to either an MI or some other condition.TrueFalse ................
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