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Maths in Medicine Stage 1 > Maths > Flashcards

Maths Flashcards

1
Q

What is the michaelis menton equation?

A

initial velocity = maximum velocity x [s] / substrate concentration at half + [s]

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2
Q

What are the meanings of K1, K-1 and K2?

A 
K1 = provides enzyme substrate complex
K-1 = consumes ES
K2 = consumes ES
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3
Q

What is the limiting velocity equation?

A

km = K-1 + K2 / K1

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4
Q

What is the maximum velocity equation?

A

Vmax = K2 x [E]total

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5
Q

How to calculate rate?

A

Product / time

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6
Q

How to calculate pH?

A

-log [H+]

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7
Q

How to calculate [H+]?

A

10^-pH

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8
Q

What is the Henderson hasselbach equation?

A

pH = pKa + log ([A-]/[HA])

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9
Q

How to calculate pKa?

A

pKa = -log Ka

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10
Q

How to work out total magnification?

A

Magnification of objective lens X magnification of ocular lens

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11
Q

How to work out ppm concentration?

A

ppm/atomic weight

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12
Q

How to calculate renal blood flow?

A

Renal plasma flow/1-haematocrit ratio

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13
Q

How to calculate filtration fractions?

A

GFR/eRPF

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14
Q

How to work out PAH secreted?

A

PAH excreted - PAH filtered

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15
Q

How to work out Na+ filtered?

A

plasma [Na+] x GFR

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16
Q

How to work out obligatory water loss?

A

Waste products generated/maximal urinary concentration

17
Q

How to calculate Osmolar clearance?

A

Urine osmolarity x urine flow rate / Plasma osmolarity

18
Q

How to work out acid secretion?

A

Metabolic acid production + H+ intake

19
Q

How to work out metabolizable energy?

A

Digestible energy - energy lost

20
Q

How to work our %PEFR?

A

PEFR/PEFR (best or predicted) x 100

21
Q

How to calculate stroke volume?

A

End diastolic volume - end systolic volume

22
Q

How to calculate ejection fraction?

A

(EDV-ESV) / EDV X100

23
Q

How t calculate venous return?

A

CO = blood flow = venous return

24
Q

How to calculate Darcy’s law of flow?

A

(Upstream pressure - downstream preassure) / resistance

25
Q

How to calculate fricks first law regarding diffusion?

A

Diffusion constant x area x (change in concentration / diffusion distance)

26
Q

How to calculate mean arterial blood pressure?

A

CO x TPR

27
Q

How to calculate cardiac output?

A

HR x SV

28
Q

How to calculate transmural pressure?

A

Pressure in inside compartment - pressure in outside compartment

29
Q

How to calculate total lung capacity?

A

tidal volume + residual capacity

30
Q

How to work out total ventilation?

A

TV x number of breaths per min

31
Q

How to calculate dead space ventilation?

A

Dead s[ace volume x no. of breaths

32
Q

How to calculate flow?

A

(p1-p2)/R

33
Q

Transmural pressure gradient?

A

Alveolar pressure - intrapleural pressure

34
Q

Henrys law?

A

C = kP

35
Q

How to calculate minute ventilation?

A

Tidal volume x respiratory rate

36
Q

How to calculate alveolar ventilation?

A

(Tidal volume - anatomical dead space) x respiratory rate

Maths in Medicine Stage 1 (1 decks)

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