NRSG 421 – ECGs Exam Questions With Verified Answers.
2 views 0 purchase
Course
NRSG 421
Institution
NRSG 421
NRSG 421 – ECGs Exam Questions With
Verified Answers.
Automaticity - answerthe ability of cardiac pacemaker cells to spontaneously initiate an
electrical impulse (Usually done by the SA node)
Na, K, Ca - answerNormal concentrations of these electrolytes are important in maintaining
automatic...
NRSG 421 – ECGs Exam Questions With
Verified Answers.
Automaticity - answer✔the ability of cardiac pacemaker cells to spontaneously initiate an
electrical impulse (Usually done by the SA node)
Na, K, Ca - answer✔Normal concentrations of these electrolytes are important in maintaining
automaticity
enhanced - answer✔____________________ automaticity can cause dysrhythmias
excitability - answer✔ability of cardiac cells to respond to an electrical impulse generated by
pacemaker cells or other stimuli
depolarization - answer✔this occurs when the cells become electrically excited
repolarization - answer✔occurs when cells return to the resting state
excitability - answer✔refers to the ability of cardiac muscle cells to respond to an outside
stimulus. The stimulus can be chemical (drugs, low K/Ca), mechanical, or electrical.
sodium enters cell - answer✔what electrolyte is involved in depolarization?
potassium exits cell and calcium enters - answer✔what electrolyte is involved in repolarization?
calcium enters cell - answer✔what electrolyte is involved in cardiac muscle contraction?
absolute refractory - answer✔cell will not respond to further stimulation
relative refractory - answer✔- vulnerable period
- some cardiac cells have repolarized and can be stimulated to respond to a stronger than normal
stimulus
bentricular depolarization and early repolarization - answer✔When does the absolute refractory
period occur?
ventricular repolarization - answer✔When does the relative refractory period occur?
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 sirjoel. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.49. You're not tied to anything after your purchase.
