Exam (elaborations)
NURB 3150- Antihypertensives (CHP 26) Study Set Exam
- Course
- Institution
NURB 3150- Antihypertensives (CHP 26) Study Set Exam ...
[Show more]
Content preview
NURB 3150- Antihypertensives(CHP 26) Study Set Exam
BP Regulation - Answer Arterial BP:
- force exerted on arterial walls by blood flow
Response to Hypotension:
- SNS is stimulated (increase HR, BP, force of contraction, vasconstriction and renin
release)
- Adrenal Medulla secretes epi & non-epi (increases BP/HR)
- Kidney's retain fluid (causes increase in volume thus increasing BP)
Response to HTN:
- increase renal secretion
- fluid loss decreases circulating volume which
- decreases CO, which
- decreases arterial BP, which
- decreases BP
Two Main Determinants of BP - Answer CO:
- HR x SV (amount of blood ejected per heart beat)
- systolic BP (how much blood is pumped to body & lungs)
Peripheral Vascular Resistance:
- diastolic BP (how much resistance heart meets when pumping)
Renin-angiotensin-adolsterone-system (RAAS) - Answer Renin:
- stimulates angio I & II (both vascoconstrict which is bad for HTN)
Angiotensin I:
- vasoconstriction and release of aldosterone
Angiotensin II:
, - more potent vasoconstrictor
Aldosterone:
- Na & H20 retention, also K regulation
*when people are in renal failure its because aldosterone is failing, which leaves
concern for K levels*
Beta Sites - Answer Beta 1:
- heart (selective)
- increases P, contractility (makes heart beat more forcefully, vasoconstriction
Beta 2:
- heart, lungs & periphery (non selective)
- dilate bronchioles (when we block beta 2's can cause bronchoconstriction)
Think 1 heart (beta 1) and two lungs (beta 2)!
HTN - Answer Profoundly alters cardiovascular function, increasing cardiac workload,
causing myocardium hypertrophy and eventually HF.
Initially may produce no s/s, s/s reflect target organ damage, think heart/brain/kidney
and eyes.
BP is about circulating volume, therefore dehydration causes decreased BP therefore
can cause orthostatic hypotension. Anyone on an antihypertensive is a fall risk.
Hypertensive Emergencies - Answer Episodes of severe elevated BP caused by:
- extension of malignant HTN, cerebral hemorrhage, dissecting aortic aneursym, renal
dz, etc.
- can cause strokes
S/S:
- sever HA, N/V, visual disturbances (can cause blurred vision or temporary blindness),
neurological disturbances, disorientation, decreased LOC
Antihypertensive Meds - Answer ACE Inhibs
Angiotensin II Receptor Blockers (ARBs)
Antiadrenergics
Ca Channel Blockers
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 Zayla. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
76449 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now