Cardiology Flashcards
What organs have resistance in series? (2)
liver
kidney
What organs have resistance in parallel?
everything but the liver and kidney
What organ has the highest A-V O2 difference at rest?
heart
What organ has the highest A-V O2 difference after exercise?
muscle
What organ has the highest A-V O2 difference after a meal?
gut
What organ has the highest A-V O2 difference during an exam?
brain
What organ has the lowest A-V O2 difference?
kidney
Where does a Type A thoracic aortic dissection occur? (2)
ascending aorta
associated with cystic medial necrosis and syphilis
Where does a Type B thoracic aortic dissection occur? (2)
descending aorta
associated with trauma and atherosclerosis
What layers does a true aortic aneurysm involve? (3)
intima
media
adventitia
What layers does a pseudo aortic aneurysm involve? (2)
intima
media
What is pulse pressure?
systolic-diastolic
What vessel has the thickest layer of smooth muscle?
aorta
What vessels have the most smooth muscle?
arterioles
What vessels have the largest cross-sectional area?
capillaries
What vessel has the highest compliance?
aorta
What vessels have the highest capacitance? (2)
veins
venules
What is your max heart rate?
220 - age
What is stable angina? (2)
pain on exertion
associated with atherosclerosis
What is unstable angina? (2)
pain at rest or first event
associated with transient clots
What is Prinzmetal angina? (2)
intermittent pain
associated with coronary artery spasm
What stain is used to see amyloidosis?
congo red (apple green birefringence)
What is hemochromatosis? (2)
Fe deposition in organs
leads to hyperpigmentation, arthritis and DM
What is cardiac tamponade? (5)
pressure equalized in all 4 chambers quiet precordium no pulse or BP Kussmaul's sign pulsus paradoxus (dec systolic P > 10 mmHg on inspiration)
What is a transudate? (3)
effusion of mostly water
too much water (heart failure and renal failure)
not enough protein (cirrhosis and nephrotic syndrome)
What is an exudate? (5)
effusion of mostly protein purulent (bacteria) hemorrhagic (trauma, cancer, PE) fibrinous (collagen vascular disease, uremia, TB) granulomatous (non-bacterial)
What is systole? (3)
ventricles contract
dec blood flow to coronary arteries
inc O2 extraction
What is diastole? (3)
ventricles relax and fill
in blood flow to coronary arteries
dec O2 extraction
What are the only arteries with deoxygenated blood? (2)
pulmonary artery
umbilical artery
What murmur has a waterhammer pulse?
aortic regurgitation
What murmur has a pulsus tardus?
aortic stenosis