Newman Lectures Flashcards
Why would someone place a pulmonary artery catheter (Swan-Ganz catheter)?
to measure the preload
Three determinants of SV
preload
afterload
contractility
location of ACE
lungs
renin is secreted from
the JGA of the kidneys
angiotensinogen is produced by the
liver
2 functions of angiotensin II
vasoconstriction (very potent)
stimulates aldosterone secretion from adrenal glands
What would a treadmill test tell you?
Forces increased demand on the heart.
What would a cardiac catheterization tell you?
(not sure)
What is 3 vessel coronary disease?
stenosis of all 3 major coronary arteries:
- left coronary artery bifurcates into the left anterior descending (anterior interventricular branch) and the circumflex branch
- right coronary artery
The three syndromes of coronary disease
chronic stable angina
acute coronary syndrome
MI
Guy carrying a bag of groceries up the stairs feels a tightness in his chest. Sits down and feels better.
chronic stable angina
Chronic stable angina: _____ of blood to the myocardium and _____ demand relative to the supply.
inadequate supply; increased
the inadequate supply is due to blockage
The main determinants of myocardial demand (2)
systolic blood pressure
heart rate
Guy wakes up in the middle of the night with an elephant sitting on his chest. He’s pale, breathing hard.
Acute coronary syndrome
Atherosclerotic plaque ruptures which causes many events including coronary artery constricts and thrombosis
Acute coronary syndrome
