100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Previously searched by you
Previously searched by you
logo
Dysrhythmias week 2 Week 2: Dysrhythmias $7.99   Add to cart
Quickly navigate to
Preview
  2.  
  3. Relias Dysrhythmia
  4.  
  5. Relias Dysrhythmia

Exam (elaborations)

Dysrhythmias week 2 Week 2: Dysrhythmias
 2 views  0 purchase
  • Course
  • Relias Dysrhythmia
  • Institution
  • Relias Dysrhythmia
  • Book
  • ECG Interpretation

Dysrhythmias week 2 Week 2: Dysrhythmias • Dysrhythmias and arrythmias mean the same thing • Abnormal cardiac rhythms are termed dysrhythmias. • Prompt assessment of dysrhythmias and the client’s response to the rhythm is critical. Properties of Cardiac Cells • AUTOMATICITY-abilit...

[Show more]

Preview 3 out of 21  pages

Document information

  • December 8, 2023
  • 21
  • 2023/2024
  • Exam (elaborations)
  • Questions & answers

Subjects

  • dysrhythmias week 2 week 2 dysrhythmias

Connected book

book image

Book Title:

Author(s):

  • Edition:
  • ISBN:
  • Edition:

More summaries for

  • Relias Dysrhythmia Basic Test Answers 2023 Dysrhythmia – Basic A -35 QA
  • Relias Dysrhythmia Basic Test Answers Solution guide 2023
  • Dysrhythmia Skill Labs-Practice Strips
All for this textbook (28)

Written for

  • Relias Dysrhythmia
All documents for this subject (541)

Seller

avatar-seller
HIGHSCORE

Reviews received

Content preview

Dysrhythmias week 2

,Week 2: Dysrhythmias
• Dysrhythmias and arrythmias mean the same thing
• Abnormal cardiac rhythms are termed dysrhythmias.
• Prompt assessment of dysrhythmias and the client’s response to the rhythm is critical.

Properties of Cardiac Cells
• AUTOMATICITY-ability to initiate electrical impulses spontaneously and continuously (without
thinking about it- SA node working (primary pacemaker)
• EXCITABILITY- ability of cardiac cells to respond to electrical activity “electrically stimulated” (SA and
AV node)
• CONDUCTIVITY-ability of cardiac cells to transmit impulses to other areas
• CONTRACTILITY- ability to respond mechanically to electrical impulses with pump action
• REFACTORINESS- heart needs a break

Conduction System
• Automaticity: SA NODE 60-100 bpm: “primary pacemaker” (automatic firing rate exceeds heart’s
other pacemakers)
• AV NODE (junction) 40-70 bpm
• Purkinje fibers (ventricular conduction system) 20-40 bpm




Nervous System Control of the Heart
Autonomic nervous system controls:
• Rate of impulse formation
• Speed of conduction
• Strength of contraction
Parasympathetic nervous system:
• Vagus nerve: Job of the Vagus nerve is to SLOW down
• Decreases rate
• Slows impulse conduction
• Decreases force of contraction
Sympathetic nervous system:
• Increases rate
• Increases force of contraction

Electrocardiogram Monitoring
• Graphic tracing of electrical impulses produced by the heart

, • Waveforms of ECG represent activity of charged ions across membranes of myocardial cells
• Rhythm strip provides documentation of patient’s rhythm
• Allows for measurement of complexes and

intervals Phases of Cardiac Action Potential




Fig. 38-5. Time and voltage on the electrocardiogram; 6-second strip.
Assessment of Cardiac Rhythm (Above R)
• ECG paper consists of large (heavy lines) and small (light lines) squares.
• Each large square incorporates 25 smaller squares (five horizontal and five vertical).
• Each small square represents 0.04 second horizontally and 0.1 millivolt (mV) vertically.
• This means that the large square equals 0.20 second and that 300 large squares equal 1
minute. Vertically, one large square is equal to 0.5 mV.




Depolarization vs. Repolarization
• Repolarization/polarized = resting state = 60-100bpm
• When stimulated = depolarized
• Depolarization results in contraction
• Prepares for another impulse by recharging or repolarizing
• QRS=complex=several waves
• Isoelectric line=baseline
• Segments=straight line between wave and complex
• Interval=wave and segment

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

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

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

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 HIGHSCORE. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $7.99. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

74735 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
$7.99
  • (0)
  Add to cart