Exam (elaborations)
2024 EKG KAISER STUDY GUIDE EXAM WITH CORRECT ANSWERS
- Course
- Institution
2024 EKG KAISER STUDY GUIDE EXAM WITH CORRECT ANSWERS
[Show more]
Content preview
EKG Kaiser Study GuideStudy online at https://quizlet.com/_abmrda
1. Cardiac Con- SA node> AV node> Bundle of His> Left and Right bundle
duction Pathway branches> Purkinjie fibers
System
2. Pacemakers of Natural: SA Node = 60-100 beats/minute
the heart Backup: AV Node = 40-60 beats/minute
Backup: Purkinje Fibers (ventricles) = 20-40 beats/minute
3. SA Node • Intrinsic Pacemaker of the heart
• Rate 60-100 beats/min
• RA (Right Atrium), close to SVC (Superior Vena Cava)
• Blood supply from RCA (Right Coronary Artery) & LCA
(Left Coronary Artery)
4. Interatrial/Intern- Transmits impulses from the SA node to the AV node
odal Tracts through the RA & LA
5. AV node • Slows conduction (40-60 beats/min)
• Physiologic delay allows atrial kick on floor of RA near
tricuspid valve
6. Bundle of His Bundle of cardiac muscle fibers that conducts the electri-
cal impulses from the AV node in the right atrium to the
, EKG Kaiser Study Guide
Study online at https://quizlet.com/_abmrda
septum between the ventricles and then to the left and
right ventricles.
7. bundle branches Right and Left (Left anterior & Left posterior fascicles)
8. Purkinjie Fibers Fibers from Bundle Branches imbedded into the ventricle
walls.
9. Depolarization vs Depolarization - electrical excitation of the cell membrane,
Repolarization normally followed by mechanical contraction
Repolarization - return of cell membrane to its resting
state, normally followed by mechanical relaxation
10. Electrical and The heart has two activities that are performed rhythmi-
mechanical ac- cally: electrical activity followed by mechanical activity
tivity of the heart Electrical activity always precedes mechanical activity
It is possible to have electrical activity without mechanical
response
Always check the patient - Do Not Depend on the Ma-
chine!!!
11. Measurement of A standard ECG is printed at 25mm per second or 25
the boxes in the small squares per second. Since one second divided by
ekg 25 small boxes, then each 1 mm box = 0.04 seconds. The
, EKG Kaiser Study Guide
Study online at https://quizlet.com/_abmrda
larger boxes indicated by the heavier lines are equal to
0.20 seconds.
Voltage is measured along the vertical axis and is ex-
pressed in millivolts (mV). The standard calibration is
that a 1 mV signal produces a 10-mm deflection (0.1
mV=1mm). Simply put 10 small squares vertically is equal
to 1 millivolt
12. EKG waveforms P wave - rounded with upright deflection in lead II, atrial
and intervals depolarization
PR interval- delay @ AV junction
• measure from beginning of P wave to beginning of QRS
• Normal duration 0.12 - 0.20 seconds •
S wave - Negative deflection following the R-wave
QRS complex - multiple components, Ventricular depolar-
ization, - 0.06 -0.11
• Q wave - first negative deflection after P wave R wave
• Positive deflection after the Q
J point - marks where the QRS complex ends and the ST
segment begins
ST segment - normally isoelectric line between QRS and
the beginning of the T wave
QT interval - beginning of the QRS complex to the end of
the T wave; changes with heart rate, usually half of the R to
R interval. beginning of vent activation through Ventricular
depolarization. 0.44 -0.48 (Rate dependent)
T wave - follows the QRS; typically, larger than the P wave
and slightly asymmetric; Ventricular repolarization
U wave - not usually seen, may be due to hypokalemia or
digitalis toxicity
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 Elitaa. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $15.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
83637 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now