Details Title: 12 Lead ECG Interpretation Description: 12 Lead ECG Reading Total Flash Cards: 22 Created: 07/08/2007 16:24:42		New Users: To study from this flashcard set, or to create your own your own study flash cards, REGISTER HERE. Existing Users: CLICK HERE. Additional Medical Flashcards
Cards in this set: Term What does a Bundle Branch Block possibly indicate? Definition That possibly a large amount of myocardial necrosis has occurred. Term The Right Coronary Artery supplies how much blood to the SA and AV node? Definition -60% to the SA node -90% to the AV node Term Characteristic of Right BBB? Definition Positive and Negative QRS complex in V1. Term Characteristic of Left BBB? Definition Primarily negative QRS complex. Term Name the components of the Triad of Infaraction? Definition -Ischemia -Injury -Infarction Term In terms of the Triad of Infarction, define ischemia. Definition ST segment depression and/or T-wave inversion. Term In terms of the Triad of Infarction, define injury. Definition ST elevation and T-wave inversion. Term In terms of the Triad of Infarction, define infarction. Definition Q-wave = 1/3 size of QRS or wide. Term What does the Q-wave on infarction say about myocardial tissue? Definition Q-waves show an absence of electrical activity in some section of the heart, signaling dead tissue. Cells normally rest at -90mV when dead, so the Q-wave shows no activity and the stylus drops. Term Reciprocoal changes will usually have what type of T-wave? Definition Inverted T-wave. Term What supplies the Posterior Left Bundle Branch? Definition Right Cornary Artery or the Left Coronary Artery. Term What supplies the Anterior Left Bundle Branch? Definition Left Anterior Descending - part of the the Left Coronary Artery. Term What supplies the Right Bundle Branch? Definition Right Coronary Artery. Term The Left Coronary Artery supplies how much blood to the SA and AV node? Definition -40% to the SA node -10% to the AV node Term What might cause Right Atrial Hypertrophy? Definition -Tricuspid Valve Disease -Pulmonary/Respiratory Disease Term What might cause Left Atrial Hypertrophy? Definition -Mitral Valve Disease -Hypertension Term Characteristics of Left Anterior Hemi Block on 12 Lead ECG: Definition -small Q in I -small R in III -Left Axis deviation of -45 degrees or more. Term Characteristics of Left Posterior Hemi Block on 12 Lead ECG: Definition -small R in I -small Q in III -right axis deviation of +150 degrees or more. Term Causes of Right Ventricular Hypertrophy? Definition -Chronic Lung Disease Term Characteristics of Right Ventricular Hypertrophy on 12 Lead ECG: Definition Progressive decrease in size of R-wave from V1 to V4. (R-wave gets smaller from V1 to V4) Term Characteristics of Left Ventricular Hypertrophy on 12 Lead ECG: Definition Sum of S-wave in V2 and R-wave in V5 are 35mm or more on strip. Term Characteristics of Pericarditis: Definition -ST elevation in all leads (not always contiguous) -common in dialysis and kemotherapy patients -low grade fever -decreased pulse pressure -may use NSAID for tx -may see posterior reflections -Viral, Bacterial or Metabolic