MEMORIZE THESE FORMULAS Flashcards
What is the formula for the nernst equation?
Vm = RT/ZF Log (xo/xi)
Vm=61.5 log (ko/ki)
What is the formula for cardiac output?
CO = HR X SV
What are the two formulas for MAP?
MAP = TPR x CO MAP = DP +1/3 (SP+DP)
What are the two formulas for PP?
PP = SP-DP PP = SV/C
What is the flow in series?
Q=Q1=Q2…
What is the flow in parallel?
Q=Q1+Q2+Q3…
What is the equation for area in a blood vessel?
A = Pi r^2
What is the equation for transit time?
V/Q
What is the total resistance in series?
R=R1+R2+R3
What is the total resistance in parallel?
1/R = 1/R1 +1/R2 +1/R3
What is the partial fraction of a gas equal to (Fi) ?
Fi = ni/nt
What is work equal to in the heart?
work = preload x afterload
What is stroke volume equal to?
EDV - ESV
What is ejection fraction equal to?
EF =SV/EDV
What is the transmural P in the lung equal to?
Palv - Ppl
What is the transmural chest P equal to?
Ppl - Patm
What is total transmural P equal to?
Pt = Pc + Pl = Palv - Patm
What is the vital capacity equal to?
Vc = IRV + ERV + Vt = TLC-RV
What is inspiratory reserve capacity?
IRV + Vt= TLC-FRC
What is the n2 washout equation?
FRC = Fn2 sp x (Vsp)/(Fn2 L)
How do you calculate FRC in a pletysmograph?
-Pt (delta V)/ (delta P)
What is the formula for gain?
correction/error
