Exam (elaborations)
Med-Surg: Telemetry Study Guide
- Course
- Institution
Med-Surg: Telemetry Study Guide
[Show more]
Content preview
Med-Surg: Telemetry Study Guideelectrical systole Correct Answer-activation
excitation
depolarization
electrical diastole Correct Answer-recovery
repolarization
mechanical systole Correct Answer-shortening
contraction
emptying
mechanical diastole Correct Answer-lengthening
relaxation
filling
automaticity Correct Answer-ability to initiate and maintain electrical
rhythm
excitability Correct Answer-ability to respond to electrical stimulus
conductivity Correct Answer-ability to transfer that electrical stimulus to
the neighboring cell
,contractility Correct Answer-the ability of myocardial cells to shorten
and contract in response to an electrical stimulus
force generated by the contracting myocardium under any given
condition
cardiac output Correct Answer-stroke volume X heart rate
amount of blood pumped by each ventricle in liters per minute
stroke volume Correct Answer-the amount of blood ejected with each
heart beat
affects by preload, afterload, and contractility
preload Correct Answer-volume of blood in ventricles at the end of
diastole
(ventricular filling)
afterload Correct Answer-the amount of resistance the ventricle must
overcome to eject the blood out of the heart
SA node Correct Answer-primary pacemaker of the heart
initiates electrical impulses at rate of 60-100 bpm
AV node Correct Answer-synchronizes atrial and ventricular activity
picks up slack of SA node at rate of 40-60 bpm
, bundle of HIS Correct Answer-located between atria and ventricles
should be the only pathway (if not, indicates conduction issues)
next stop is R and L Bundle Branches
Purkinje fiber Correct Answer-ventricles are finally stimulated to
contract
inherent rate of 30-40 bpm (if SA and AV node fail)
depolarization Correct Answer-stimulation
cardiac cell is normally negatively charged
cells receive an electrical stimulus
channels open for Na+ and Ca+ to enter cell
K+ leaves cell, but cell is positively charged
cardiac contraction
repolarization Correct Answer-relaxation
K+ continues to leave cell and Na+ flows into cell
however, Cl- now enters cell
restoration of negative charge
arrhythmias Correct Answer-"dysrhythmias"
disorders of the electrical impulse within the heart that causes
disturbances
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 cracker. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $14.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
75632 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now