Exam (elaborations)
ECGs Made Easy
- Course
- Institution
- Book
Exam study book ECGs Made Easy of Barbara Aehlert - ISBN: 9781455759750 (ECGs Made Easy)
[Show more]
Connected book
Book Title:
Author(s):
- Edition:
- ISBN:
- Edition:
More summaries for
-
ECGs Made Easy
-
ECGs Made Easy
-
Test Bank for ECGs Made Easy 6th Edition by Barbara Aehlert Chapters 1-10 Complete Guide.
Seller
Follow
kushboopatel6867
Reviews received
Content preview
TEST BANK For ECGs Made Easy, 7th Edition by BarbaraJ Aehlert
How does calcium potassium ans sodium effect automaticity - ANSWER:Normal
concentration maintain automaticity.
Increased blood concentration decrease automaticity
Decreased blood concentration increase automaticity
What's difference between excitability, conductability, and contractability? -
ANSWER:Excitability/ability to respond to external stimuli
Conductability/ability of cardiac cell to receive electrical impulse and conduct it to
adjoining cell
Contractability/iontrophy- ability of myocardial cell to shorten causing cardiac
contraction
Voltage - ANSWER:Potential energy from opposite charges
Normal charge of cardiac cell - ANSWER:Negative
Polarized state - ANSWER:When potassium leaks out of cell proteins and phosphates
remain inside cell because they are too big and they carry a negative charge
Depolarization - ANSWER:When cell membrane stimulated sodium potassium
channel open. Sodium rushes in and cell becomes more positive. A wave form will
appear on the ECG
Depolarization occur how - ANSWER:From the inside out
Depolarization is wht kind of event - ANSWER:Electrical
Repolarization - ANSWER:Cell returning to negative charge by stopping flow of
sodium into the cell and allows potassium to leave it.
Repoloarization cause - ANSWER:Contractile cells in myocardial cells to separate
Repolarization occurs from - ANSWER:Outside in
Repolarization is represented by wht on the ECG - ANSWER:St segment and t wave
Arrhythmia - ANSWER:Abnormal heart rate
Absolute refractory period - ANSWER:Not possible to stimulate cardiac cell
Effective refractory period - ANSWER:Includes ARP and first half of refractory period
, A conducted action potential can not generate enough inward current to conduct to
cell
Relative refractory period - ANSWER:Some cardiac cells are repolarized to their
threshold potential and can be stimulated with strong impulse
Supernormal period - ANSWER:Stimulated with weaker than normal stimuli
SA node pace - ANSWER:60-100 bpm
Possible to go to 180 bum
As impulse leaves to SA node, how does it spread - ANSWER:Spreads from cell to cell
across atrial muscle. As it spreads it stimulates rt atrium, intraatrial septum, and
passes along special pathway called Bachman's bundle to stimulate left atrium
SA node located - ANSWER:Upper posterior where superior vena cava and rt atrium
meet
AV node located - ANSWER:Floor of right atrium behind tricuspid valve
AVnode conduction slower why - ANSWER:Allows atrium chambers to contract and
empty blood in ventricles
Bundle of His /AV bundle located - ANSWER:Upper portion of intraventricular
septum
AV bundle pacemaker cells have intrinsic value of - ANSWER:40-60 bpm
Conduction fastest in His-Purkji system and slowest in SA and AVnode
True or false - ANSWER:True
Rt and lft bundle branches supply what - ANSWER:Rt bundle branch supply rt
ventricle
Lft bundle branch supply intraventricular septum and lft ventricle and split into
fascicles which rely impulse to mid septum
Extra fascicles because left ventricle bigger
Purkinje fibers - ANSWER:Spread from intraventricular septum to papillary muscles
to apex of heart
Lead wire - ANSWER:Attached to electrode and other end to ECG machine
Lead 1 - ANSWER:+lft arm -rt arm lateral view
Lead 2 - ANSWER:+lft leg - rt arm inferior veiw
Lead3 - ANSWER:Left leg -rt arm inferior veiw
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 kushboopatel6867. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $17.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
76799 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now