Extrensic (control of BF) - ANS-Vasoconstriction
Symathetic nervous system (smooth muscle)
Norepinephrine- - ANS-One of the catecholamines
Intrinsic- - ANS-Autoregulation
Maintaining a constant flow regardless of changes in arterial pressure
, Blood clots composed of - ANS-Aggregated platelets
Clotting factors
Fibrin
(adhere to vessel wall)
Blood clots form where? - ANS-1.In chambers of the heart (dysrythmia, valve damage or
replacement)
2.Form in arterial or peripheral circulatory system
3.From dehydration or drugs
Pathogenesis of blood clots: - ANS-1.Arterial- May reduce flow (turbulence)
Distal ischemia
2.Venous-Clot alters venous return
Impairs removal of metabolic waste
Produces swelling (edema)
If inflammation occurs (phlebitis) causing a thrombusthrombophlebitits
Clinical manifestations of thrombus - ANS-1.Arterial- intermittent claudication*
Cool to touch
Cyanotic
Arterial ulcer-late
2.Venous-May be asymptomatic to life threatening (PE)
Calf or groin tenderness
Swelling
Increased skin temp
Homan sign (10%)
Treatment of thrombus: - ANS-PREVENTION!
1.Medical: oral or parental coagulants
Drugs to block platelet aggregration
Antiembolic stockings
Sequential compression devices (SCDs)
Early ambulation
2.Surgical: Removal of the thrombus
Blood vessel obstructions
Embolus-traveling blood clot etiology: - ANS-1.Dislodged thrombus from heart
From aorta in cerebral artery (stroke)
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 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 Hkane. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £6.17. You're not tied to anything after your purchase.
