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Physio
ECG Leads
Question | Answer |
---|---|
Einthoven's Triangle | 3 EKG lead RA, LA, LL I, II , III (Limbs leads) Inferiorly and latrally |
5 EKG Lead | RA, RL, LA, LL, Chest V1-V6 Inferior, lateral and one anterior view |
The Gold Standard | 12 EKG Lead Limb leads (RA, LL, LA, RL) Precordium (v1-V6 = the heart) allows for specific areas to be ID'd Inferior (II, III, aVF) "augmented voltage +" lateral (I, aVL, V5, V6) Anterior (V1-V4) |
Precorial Lead Placement | v1 (RIGHT 4th intercostal space R Lateral sternal line) LEFT V2- 4th intercostal space L lateral sternal line V3- halfway btw leads V2 and V4 V4- 5th intercostal space @ L midclavicular line v5- L anterior axillary V6- L midaxillary line |
Distribution: Anteroseptal | V1, V2, V3, V4 |
Distribution: Anterior | V1-V4 |
Distribution: Anterolateral | V4-V6, I, aVL |
Distribution: Lateral | I and aVL |
Distribution: inferior | II, III, and aVF |
Distribution: inferolateral | II, III, aVF, and V5 and V6 |
View of Posterior Heart Wall | Leads V1 and V2 Tall R, ST Depression, Upright T-Wave |
View of Inferior Heart Wall | Leads II, III, aVF "Looks from Left leg up" |
View of Lateral Heart Wall | Leads I and aVL "High Lateral Left; looks from Left arm toward the heart" |
View of Lateral Heart Wall | Leads V5 & V6 "Low lateral or Apical view" looks from left lateral chest toward the heart |
View of Entire Lateral Heart Wall | Lead I, aVL, V5, V6 looks at the lateral wall of the heart from two different perspectives |
View of Anterior Heart Wall | Leads V3 and V4 Looks from the left anterior chest |
View of Septal Heart Wall | Leads V1 and V2 looks along sternal borders |
EKG represents... | part of electric activity induced in body fluids by cardiac impulses that reach the surface; overall spread of activity thru heart (NOT Complete) de/repolarization; not single AP Comparisons of voltage detected at dift pts of body, not actualy potential |
Rhythm strips | at the bottom of 12 lead strip; devide can show up tp any of the 6 limb leads (I,II, III, aVR, aVL, aVF) |
EKG Info gained (5 main categories) | Heart Rate: Tachy/Brady 2. Rhythm: (ir)regular/arythmias 3. Signal conduction; delsy, heart blocks, septum issue 4. heart tissue: hypertrophy 5. conditions- MI, Myocardial Ischemia, Wolf-Parkinson's White Syndrome *Stemi? |