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
|
|
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
|
|
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
|
|
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 |
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