UCLA EKG Test UPDATED Exam Questions and CORRECT Answers
7 views 0 purchase
Course
UCLA EKG
Institution
UCLA EKG
UCLA EKG Test UPDATED Exam
Questions and CORRECT Answers
electrically polarized at rest - Correct Answer- - inside of heart cell has a high potassium
concentration, whereas the outside has a higher concentration of NA
-higher positive charge outside the cell cause more negative charge inside ...
UCLA EKG Test UPDATED Exam
Questions and CORRECT Answers
electrically polarized at rest - Correct Answer- - inside of heart cell has a high potassium
concentration, whereas the outside has a higher concentration of NA
-higher positive charge outside the cell cause more negative charge inside cell
electrical potential - Correct Answer- difference between the charges outside and inside of the
cell wall
Depolarization - Correct Answer- NA moves into the cell rapidly in response to an electrical
impulse
- inside cell loses negative potential
Replolarization - Correct Answer- ions return to their original resting state
- heart cells restore their resting polarity
4 Phases of Electrophysiology of the heart cell - Correct Answer- Phase 0: Na flow in and
rapid depolarization occurs when stimulated
Phase 1: Rapid return to isoelectric level
Phase 2: CA ions flow in and myocytes contract
Phase 3: K flow out and rapid depolarization occurs
Phase 4: Polarized resting phase
SA node - Correct Answer- -primary pacemaker
- Rate: 60-100
,- SA node depolarizes the atria via intro nodal tracts and Bachmann;s bundle = resulting in
atrial contraction
AV node - Correct Answer- - responsible for slowing down conduction from the atria to
ventricles just long enough for atrial contraction to occur
- rate: 40-60
Bundle of His - Correct Answer- - divides left and right branches
-impulses are conducted down LBB faster than RBB, allowing both ventricles to contract at
same time
Purkunje fibers - Correct Answer- - send impulses into mycardial tissues of the ventricles and
causes them to contract
- rate: 20-40
Myocardial cells - Correct Answer- -contractile machinery of the heart
- myocardial cell is deplolarized, CA is released within cell causing cell to contract
Placement of precordial leads - Correct Answer- v1: right sternal boarder and 4th intercostal
space
v2: left sternal boarder and 4th intercostal space
v3: between v2 and v4
v4: midclavicular line and 5th intercostal space
v5: between v4 and v6
v6: between midaxillary line and 5th intercostal space
, EKG paper - Correct Answer- - small box: 0.04 secs
- 5 small box: 0.2 secs
- 5 Large box= 1 second
- 300 large boxes = 60 secs
PR interval - Correct Answer- 0.12- 0.20 secs
- beginning of the P wave to beginning of the QRS
Age specific heart rates - Correct Answer- NEONATES:
awake 100-180 RR 30-60
INFANTS:
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 MGRADES. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.99. You're not tied to anything after your purchase.
