CCI's CCT prep

CCI's CCT prep 6 second method - correct answersThe number of QRS Complexes between 6 sec marks on the EKG paper is multiplied by 10. Used generally for estimating slow or irregular rhythms. 1500 method - correct answersCount number of small squares between two consecutive R-waves and divide that number by 1500, it is the most accurate method of obtaining the heart rate but can only be used on regular rhythms. A positive chronotropic effect will result in a decrease in heart rate. an increase in heart rate. a decrease in force of contraction. an increase in force of contraction. - correct answersan increase in heart rate. A posterior myocardial infarction can be identified by which of the following abnormalities on a 12 lead ECG tracing? ST Elevation in II, III, aVF tall R wave and ST depression in V1-V2 tall T wave and elevation in leads I and aVL inverted P wave and elevation in V5 and V6 - correct answersTall R wave and ST depression in V1-V2 A regular rhythm at a rate of 40-60 beats per minute, with narrow QRS complexes, and no visible P waves, is consistent with the presence of atrial fibrillation. sinus bradycardia. junctional rhythm. idioventricular rhythm. - correct answersjunctional rhythm