Linked Life Data

449660

Source:http://linkedlifedata.com/resource/pubmed/id/449660

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1979-8-16
pubmed:abstractText
1. Studies on eight patients were performed to clarify the mechanism(s) of altered sodium metabolism and volume regulation in SIADH. The mechanism controlling water excretion was also studied to determine whether there is evidence that altered osmoregulation may be the basis for inappropriate ADH secretion in some patients. 2. These studies show that cumulative sodium balance and aldosterone secretion rates in patients with SIADH are negatively correlated with water intake. There is also a negative correlation between aldosterone secretion and urinary sodium excretion. In the absence of normal urine diluting ability, this increased excretion of sodium becomes a mechanism that allows an increased quantity of water to be excreted despite the persistence of an ADH effect on the renal tubules. 3. Within the range of hyponatremia observed in our studies, changes in serum sodium concentration were accounted for by changes in solute and water balance. One patient, who was potassium deficient during the studies, retained large quantities of sodium and potassium that could not be accounted for by an increase in either serum osmolality or body weight. These observations suggest that intracellular osmotically active solute is either lost or "inactivated" in some manner as intracellular potassium is replenished. 4. Marked impairment of urine diluting ability was demonstrated in all patients. However, two patients with SIADH associated with pulmonary tuberculosis exhibited graded responses to water loading, which suggests that ADH secretion may have been suppressed as serum osmolality was progressively reduced. Whether this can be attributed to a basic alteration or "re-setting" or osmoreceptor function, or is merely an indication that greater than normal reductions of serum osmolality are required to inhibit potent nonosmotic stimuli, remains to be determined.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0025-7974
pubmed:author
pubmed:issnType
Print
pubmed:volume
58
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
240-51
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1979
pubmed:articleTitle
The syndrome of inappropriate antidiuretic hormone secretion (SIADH): pathophysiologic mechanisms in solute and volume regulation.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.