exam 3 part 3 Flashcards
edema, necrosis of fat and skin atrophy, brown pigmentation from rbc breakdown, low tissue nutrition, ulcers are sxs of?
chronic venous insufficiency
what causes stasis dermatitis and venous ulcers
imparied tissue nutrition
what is stasis dermatitis
thin shinky bluish brown skin
Virchows triad?
stasis of blood flow (immobility), increased blood coagulability, and vessel wall injury
50% of thrombus are?
assymptomatic
what happens to renin secretions in the liver
goes from angiotensinogen to angeiostensin 1 then to the lungs to be converted to AG 2 by ACE enzyme
AG 2 does what?
vasoconstriction and normalizes bp
-this is how hormone controls bp
coarctation of the aorta (NARROW aorta)
congenital condition that narrows aorta and increases bf resistance, left ventrical has more pressure to overcome the bf resistance
coartication of aorta causes
HTN in upper extremeties and low bp in lower extremeties
orthostatic hypotention
decereae in venous return to heart due to poooling of blood in lower extremeties
-low co and bp and vascular volume (hypovolemia)
orthostatic hypotension causes?
bed rest, spinal cord injury, medication, autonomic nervous system disorders, baroreflex aging
chest pain worses with breathing
pleuritic chest pain
pleuritic chest pain. pericardial friction rub on auscultation (sound of the layers rubbing) and eCG changes are?
triad of pericarditis
what is constrictive pericardidits?
calcified scar tissue develops between visceral and parietal layers of serous pericardium
pedal edema, dyspnea, fatigue, kussmaul sign, ascities are sxs of?
constrictive pericarditis
manifestations of cardiac tamponade?
hypoperfusion (dyspnea, edema, oliguria, tachycardia tachypnea), distended neck veins, decrease bp and distant muffled heart sounfs
imbalance in blood supply and hearts demand for oxy
chronic ischemic heart disease
CHD
chronic ischemic heart disease and acute coronary syndromes
what obstructs blood flow
stable angina
-pain coms wheen heart oxy demand increases
-heart is most stable at rest
what can rupture causes platelet adhesion and thrombus formation?
unstable angina
-pain without exertion
-not releived by rest
what plaques are at high risk for rupture?
plaques with think firbous cap overlaying large lipid core
MI
accute onset, crushing pain, raditing left arm, neck, jaw and pain at rest
stenosis
narrowing of valve opening
-prevents forward flow
regurgitation/ incopetent
distortion of valve, dont close right and backflow can happen