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Fixed Urine Specific Gravity (Nursing)

by Rhonda Lawes

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    00:00 Now let's say you get a lab value back, and you look at the urine analysis and you see the fixed specific gravity is 1.010.

    00:08 Woohoo, that's within normal range.

    00:11 But what do we always talk about? One value does not a diagnosis make, it's always about trends.

    00:19 So with that first value, I really couldn't figure out for sure what's going on with my patient.

    00:24 But what if I looked at a trend of values and I noticed that no matter what my patient's fluid volume intake was, that urine specific gravity stayed the same or fixed.

    00:37 That's what fixed specific gravity is.

    00:39 It is an ominous sign.

    00:41 It means you have severe renal damage and failure.

    00:46 But it's within a normal value.

    00:48 I know.

    00:49 But if it remains unchanged, we've got a problem.

    00:54 What's the kidneys job? It's supposed to receive the blood, filter it through its organ, right.

    01:00 And decide what it wants to remove and put back into the blood and what else they send out into the urine.

    01:09 If what's entering the kidney is moving all the way through the kidney, and leaving unchanged, that's a sign of severe renal damage and failure.

    01:17 That's why fixed specific gravity even if the reference is within a normal range, if it doesn't change, when the patient's fluid intake, they've taken in less, they've taken in more so there's a change in their fluid intake and it stays exactly the same, we have to do some further assessment to determine the damage to the kidney.


    About the Lecture

    The lecture Fixed Urine Specific Gravity (Nursing) by Rhonda Lawes is from the course Urine Specific Gravity – Urinalysis (Nursing).


    Author of lecture Fixed Urine Specific Gravity (Nursing)

     Rhonda Lawes

    Rhonda Lawes


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