Exam (elaborations)
ECG Lead System Exam |Questions &Rationales
- Course
- Institution
ECG Lead System Exam |Questions &Rationales
[Show more]
Seller
Follow
Content preview
ECG Lead System Exam |Questions &RationalesWhat do you look at for Anterior MI? - ✔MCL1 test lead
What do you look at for Inferior MI? - ✔Lead 11
12-Lead Testing System - ✔Whole picture of heart
6 are chest
6 are limb
A Leads - ✔aVR
aVL
aVF
RA - ✔aVR
Right arm: negative deflection because the hearts electrical activity moves away from the lead
LA - ✔aVL
,Left arm: positive deflection because the hearts electrical activity moves toward the lead
LL - ✔aVF
left leg: positive deflection positive deflection because the hearts electrical activity
moves toward the lead
V1 - ✔-corresponds to modified chest lead (MCL1) placed Right side of sternum, 4th
intrcostal space
-Distinguishes between right and left ventricular topic beats
V1 shows - ✔P-wave
QRS complex
ST segment
V1 monitors: - ✔-Ventricular arrhythmia
-ST segment changes
-Bundle branch blocks
V2 - ✔Placed left of sternum, 4th intercostal rib space
V3 - ✔Placed between 2 and 4
V4 - ✔placed at 5th intercostal space and midclavicular line
V5 - ✔Place at 5th intercostal space and anterior axillaryline
, positive deflection of ECG
V6 - ✔Placed level with v4 and midaxillary line
positive deflection
Biphasic - ✔Lead V1-3
with both positive and negative deflections
P-Wave - ✔Atrial Depolarization in response to SA node triggering
Atria are stimulated and contract, they push blood through tricuspid and mitral valve into
the relaxed ventricles
height: 2-3mm
duration: 0.06-0.12 seconds
What if P-waves are absent? - ✔Can indicate that the rhythm was generated
somewhere beside the sinus node. Maybe the AV junction
P-Wave disinformation - ✔Notched, peaked or inverted: atrial enlargement associated
with COPD, pulmonary emboli, valvular disease or CHF
PR Interval - ✔Delay of AV node to allow filling of ventricle
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller KenAli. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.24. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
78600 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now