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AHN 447 TEST with Questions and Answers Verified 100% Correct | Latest Update
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AHN 447 TEST with Questions and Answers Verified 100% Correct | Latest Update
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AHN 447 TEST with Questions and AnswersVerified 100% Correct | Latest Update
What influences preload? - ✔✔Hypovolemia
Hypervolemia
Venous obstruction
What does pulmonary artery pressure measure? - ✔✔Very specific indicator of
overall volume status (usually post open heart surgery, HF pt, on cardiac units, etc)
Pressure in lungs or pulmonary system
Looks at function of left side of heart
Cardiac output - ✔✔Amount of blood ejected from left ventricle with each heartbeat
SV x HR=CO
Preload - ✔✔Amount of blood returning to right atrium...how much blood is coming
back from the body
How do you measure preload - ✔✔CVP
After load - ✔✔Indicator of the force or resistance the heart must overcome to
empty oxygenated blood into the aorta (how much resistance the heart must overcome)
How do you measure after load? - ✔✔SVR
, What controls the AV valves? (Mitral and tricuspid) - ✔✔Chordae tendinae
Troponin I - ✔✔Released with any myocardial damage
"Gold standard"
Results available within 15 min
Any elevation above 0.1 is abnormal
Myoglobin - ✔✔Muscle protein
Earliest marker available
Not clinically useful
Normal lipid profile - ✔✔Total: <200
HDL (good): men: >45; women: >55
LDL (bad): men: <160; women: <135
INR - ✔✔Warfarin, Coumadin
Thick blood = low INR
PTT - ✔✔Heparin
Blood thick= low PTT
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