Dehydration and overhydration
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Nicholas Cheong
Sep 28, 2010, 5:21:57 AM9/28/10
to Medical Physiology at SOM, AIMST University
I would like to know what is meant by each of the following terms:
-isotonic dehydration
-hypotonic dehydration,
-hypertonic dehydration
-overhydration
What is the effect of each of the above on ECF, ICF and total body
water?
I would like some assistance on this. Thank you
Jaya
MBBS BATCH 16
Edited by,
Nicholas Cheong
MBBS Batch 14
-isotonic dehydration
-hypotonic dehydration,
-hypertonic dehydration
-overhydration
What is the effect of each of the above on ECF, ICF and total body
water?
I would like some assistance on this. Thank you
Jaya
MBBS BATCH 16
Edited by,
Nicholas Cheong
MBBS Batch 14
Nicholas Cheong
Sep 28, 2010, 5:53:34 AM9/28/10
to Medical Physiology at SOM, AIMST University
Dear Jaya,
I'm not too familiar with this But I'll try my best
Isotonic dehydration occurs when the fluid lost is isotonic with
plasma.
Whereas, hypotonic dehydration normally occurs when there is secretory
loss of sodium from the intestinal epithelium.
Hypertonic dehydration occurs when the body loses predominantly water
or when an individual is deprived of water.
Overhydration occurs when the body takes in more water than it
excretes. In this case, sodium concentration is reduced due to
dilution.
I've taken the above definitions from medical-dictionary.
Effects of hypotonic dehydration on Plasma Na ,ECF and ICF
Plasma Na decreases, ECf volume drops ICF volume increases
Effects of hypertonic dehydration on Plasma Na ,ECF and ICF
Plasma Na increases, ECF volume drops, ICF volume drops
In dehydration total body water should decrease. The first compartment
that gets affected is ECF. So in dehydration ECF volume is reduced.
Depending on whether it is a hypertonic or hypotonic dehydration, the
ICF volume either decreases or increases.
You'll notice that ICF volume drops in the case of hypertonic
dehydration. Due to some causes. plasma Na increases, this draws fluid
from the intracellular compartment resulting in reduced ICF volume.
Whereas, in hypotonic dehydration PLasma Na concentration is decreased
and this creates a hypotonic environment. Fluid then moves from the
ECF into ICF, thus expanding the intracellular compartment.
I am sorry I don't know much about overhydration. I hope other
participants can share with us their knowledge on this. And if I am
wrong, do correct me. I am merely refreshing my memory on body fluid
compartments. I may have missed important details.
Thank you for any corrections.
All best,
wrote:
I'm not too familiar with this But I'll try my best
Isotonic dehydration occurs when the fluid lost is isotonic with
plasma.
Whereas, hypotonic dehydration normally occurs when there is secretory
loss of sodium from the intestinal epithelium.
Hypertonic dehydration occurs when the body loses predominantly water
or when an individual is deprived of water.
Overhydration occurs when the body takes in more water than it
excretes. In this case, sodium concentration is reduced due to
dilution.
I've taken the above definitions from medical-dictionary.
Effects of hypotonic dehydration on Plasma Na ,ECF and ICF
Plasma Na decreases, ECf volume drops ICF volume increases
Effects of hypertonic dehydration on Plasma Na ,ECF and ICF
Plasma Na increases, ECF volume drops, ICF volume drops
In dehydration total body water should decrease. The first compartment
that gets affected is ECF. So in dehydration ECF volume is reduced.
Depending on whether it is a hypertonic or hypotonic dehydration, the
ICF volume either decreases or increases.
You'll notice that ICF volume drops in the case of hypertonic
dehydration. Due to some causes. plasma Na increases, this draws fluid
from the intracellular compartment resulting in reduced ICF volume.
Whereas, in hypotonic dehydration PLasma Na concentration is decreased
and this creates a hypotonic environment. Fluid then moves from the
ECF into ICF, thus expanding the intracellular compartment.
I am sorry I don't know much about overhydration. I hope other
participants can share with us their knowledge on this. And if I am
wrong, do correct me. I am merely refreshing my memory on body fluid
compartments. I may have missed important details.
Thank you for any corrections.
All best,
Nicholas Cheong
MBBS Batch 14
On Sep 28, 5:21 pm, Nicholas Cheong <nicholascheon...@gmail.com>
MBBS Batch 14
wrote:
Nicholas Cheong
Sep 28, 2010, 6:00:56 AM9/28/10
to Medical Physiology at SOM, AIMST University
Nicholas Cheong
MBBS Batch 14
MBBS Batch 14
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