MDcooper
Forum Guru
Topics: 211
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In the diuresis following relief of urinary obstruction, the urine is
A. dilute and alkaline
B. low in sodium
C. concentrated
D. acidic
E. none of the above
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| MDcooper
Forum Guru
Topics: 211
Posts: 470
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and that is because?????
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| MDcooper
Forum Guru
Topics: 211
Posts: 470
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any one with some explaination please?
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| divya888
Forum Senior
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Posts: 27
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Three distinct types of postobstructive diuresis exist. Urea diuresis is the most common. It is self-limiting, lasting 24-48 hours. Monitor fluid balance and electrolytes. Unless otherwise contraindicated, increased fluid intake should suffice. Sodium diuresis is the second most common postobstructive diuresis. It usually is self-limiting but has the potential for longer duration (>72 h). Monitor fluid balance and electrolytes more aggressively (ie, intake and output [I/O], central venous pressure [CVP], urine and serum electrolytes). Replace fluids with isotonic sodium chloride solution 0.5 cc/1 cc urine as necessary. This is secondary to excretion of retained salt and water after relief of obstruction. Sometimes a pathological diuresis continues (after normalisation of volume status), requiring fluid and electrolyte replacement to avoid dehydration and hyponatremia. Water diuresis is rare and self-limiting. It is a temporary nephrogenic diabetes insipidus, which occurs secondary to impaired renal tubular response to ADH.
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| guayoman
Forum Elite
Topics: 44
Posts: 273
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I'm very sorry but I can't make out why it is dilute and alkaline. In review, there can be 1)Urea diuresis 2)Sodium diuresis and 3)Water diuresis--which is rare--
I guess my Q is, can Sodium and urea diureses be dilute?
thank u
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