Summary
Samenvatting Verpleegkundig rekenen
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dit is een samenvatting van de toets verpleegkundig rekenen
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By: lisetteprinssen • 7 year ago
By: pimmol • 8 year ago
it is only a small portion of the charge nurse
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LION123
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Verpleegkundig rekenen.Oplossingen en verdunningen
Oplossingsconcentratie wordt uitgedrukt in procent.
1% = 1 gram opgeloste stof / 100 ml (massa/volume)
1% = 1 ml vloeistof / 100 ml (volume/volume)
1 promille = 1 gram/1000 ml
bv
Hoeveel gram sorbitol lost men op voor een 4% sorbitoloplossing met een
volume van 40 ml?
1% = 1gram per 100 ml
4%= 4 gram per 100 ml
ml : 100 40
gr: 4 ?
4x40/100 = 1,6 gram
Verdunnen
% voorraad oplossing x volume voorraadoplossing ( liter of ml)
% verdunning x volume verdunning ( liter of ml)
concentratie1 x volume1 = concentratie2 x volume2
Verdunfactor = begin:eind
Bv van 10% naar 2% is 10/2= factor 5
Infuus
1 ml = 20 druppels geldt alleen voor vloeistoffen die even dik zijn als
water
Bij bloed is 1ml = 16 druppels
Bv.
1500 ml in 15 uur
Je hebt zakken van 500 ml
20 x 1500 = 30000 druppels
15 x 60 = 300 min
30000/300 = 33 druppels per minuut
Zuurstof
Als je 10 liter lucht samenperst tot 1 liter, heb je 10 bar
Druk (in bar) x inhoud cilinder = aantal liters zuurstof
1 atmosfeer is hetzelfde als 1 bar
bv.
Je hebt een cilinder van 10 liter met 90 bar. De patiënt krijgt 2 liter
zuurstof per minuut. Hoelang kan de patiënt met de cilinder doen?
90 x 10 = 900 liter
900/2 = 450 min
450/60 = 7,5 uur
bv.
Een 10 liter cilinder met 78 bar. Hij moet in 6,5 uur leeg zijn. Hoeveel liter
zuurstof per minuut?
78 x 10
780 liter in 6,5 uur
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