Exam (elaborations)
CRAT Study Guide With Correct Answers 2023.
- Course
- Institution
CRAT Study Guide With Correct Answers 2023.
[Show more]
Content preview
CRAT Study Guide With Correct Answers.Normal PRI interval - Answer 0.12-0.20
Normal QRS interval - Answer 0.11 or less
What does the P wave represent? - Answer Atrial depolarization
What does the QRS complex represent? - Answer Atrial repolarization and ventricular depolarization
Q wave indicates what? - Answer Dead myocardial tissue. Always a negative deflection
What is the natural pacemaker of the heart? - Answer SA node
3 types of pacemakers - Answer 1) single (either RA or RV)
2) dual chamber (RA and LV)
3) bi-ventricular (RV and LV --> Congestive Heart Failure)
Which HB would you NOT need a pacemaker for? - Answer First-degree AV block (prolonged PRI >0.20 seconds)
Define intrinsic beats - Answer The patient's own heart beat
What is sensing? - Answer The ability for the heart to sense and respond to the electrical activity of the heart
What is capture? - Answer The pacemaker sends a stimulus to the heart which causes the heart to depolarize
Failure to sense - Answer Lack of pacemaker spikes where they should have been. Battery can be dead.
Failure to capture (loss of capture) - Answer No P or QRS after the pacemaker spike
Undersensing - Answer Pacemaker spikes in areas where they should not be (i.e. in the T wave, an ST segment, or on top of another QRS)
Cardioversion vs. Defibrillation - Answer Cardioversion: to change the heart rhythm (usually from SVT to sinus)
Defibrillation: only used for pulseless VT and v-fib
Pacemaker inhibition - Answer Pacemaker doesn't work because it senses the heart is beating at or above the programmed rate
A-V sequential pacing - Answer When the pacemaker paces both the atrium and the ventricle
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 satamu. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
79373 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now