Exam (elaborations)
NUR 172 Cardiac: Questions & Accurate Answers
NUR 172 Cardiac: Questions & Accurate Answers
[Show more]
Content preview
NUR 172 Cardiac: Questions & Accurate AnswersWhat are the locations on the chest when listening to heart sounds? Right
Ans - - Aortic
- Pulmonic
- Erb's point
- Tricuspid
- Mitral
What is the flow of blood through the heart? Right Ans - - Deoxygenated
Blood flows into the heart
> Inferior Vena Cava (IVC) & Superior Vena Cava (SVC)
> Right Atrium > Tricupsid Valve > Right Ventricle
> Pulmonary Valve > Pulmonary Arteries (R&L) > Lungs
> Pulmonary Veins > Left Atrium > Mitral Valve
> Left Ventricle > Aortic Valve > Aorta > Body
What is the normal electrical conduction of the heart? Right Ans - - SA node
(sinoATRIAL) = 60-100 bpm
- AV node (atrioVENTRICULAR) = 40-60 bpm
- Bundle of His (AV bundle)
- Purkinje fibers = 20-40bpm
Where do you place ECG leads? Right Ans - - White on Right, Black on Left
- Smoke (Black) over Fire (Red)
- Snow (White) on top of Grass (Green)
- Heart loves Chocolate (Brown)
- White/Black (2nd intercostal space, mid clavicular line)
- Green/Red (6th/7th intercostal space, mid clavicle)
- Brown (Right of sternum, 4th intercostal space)
What is measured in seconds on a telemetry strip and what are normal
ranges? Right Ans - - PR interval (0.12-0.2 seconds)
- QRS interval (0.06-0.1 seconds)
- QT interval (0.34-0.43 seconds)
When looking at a telemetry strip, how many seconds do the boxes measure?
Right Ans - - Small box = 0.04 seconds
, - 5 Small boxes = 0.2 seconds => 1 Large box
- 5 Large boxes = 1 second
In regards to the Heart muscle, what does depolarization and re-polarization
cause? Right Ans - - Depolarization = contraction
- Re-polarization = relaxation
What does the P wave represent? Right Ans - Firing of the SA node and
atrial depolarization
What does the PR interval represent? Right Ans - - Atrial Depolarization
and AV Delay
- AV Delay = The time required for the impulse to travel from the atria
through the AV node (0.12-0.2 seconds)
- Measured from beginning of the P wave to the beginning of the QRS Complex
What does the QRS complex represent? Right Ans - - Ventricular
depolarization
- QRS Interval: 0.06 - 0.1 seconds
What does the T wave represent? Right Ans - - Ventricular re-polarization
- The ventricles are resting causing them to fill w/ blood
What does the QT interval represent? Right Ans - - Time it takes for
ventricular depolarization and re-polarization to occur
- QT Interval: 0.34 - 0.43 seconds
Sinus bradycardia is less than _____bpm Right Ans - 60
Sinus tachycardia is _____-_____bpm Right Ans - 100-160 (HR > 100)
What is the antidote for sinus bradycardia? Right Ans - Atropine = an
anitcholinergic that can elevate the HR back to normal
What can be the cause of sinus tachycardia? Right Ans - - Sympathetic NS
stimulation is the #1 cause (fear, anxiety, exercise, excitement, pain, fever,
bleeding, dehydration, HF, hyper-thyroid)
- Low blood volume
- Adrenergic agonists (Albuterol)
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 LeCrae. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for CA$14.33. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
79650 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now