Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: UNIPROT:P01185 (vasopressin)
 23,126 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Elevated plasma antidiuretic hormone (ADH) levels were noted in seven patients with status asthmaticus during the acute illness. These values returned to normal with resolution of the disease. The mechanism of this release is not completely understood but is consistent with the hypothesis that bronchospasm leads to decreased pulmonary blood flow, decreased volume return to the left atrium, and stimulation of the atrial volume receptors regulating ADH release. Planning for fluid therapy in patients with status asthmaticus should take into account a high probability of increased plasma ADH concentration during the acute illness. Water intoxication as well as hypoxia and hypercarbia should be considered as a possible cause of an altered state of consciousness associated with status asthmaticus.
 ...
PMID:Elevated plasma antidiuretic hormone levels in status asthmaticus. 124 95

To elucidate the role of antidiuretic hormone (ADH) on water and electrolyte balance in patients with asthmatic attacks, urinary arginine vasopressin (AVP) was assayed in 28 asthmatic patients. In a 3-year-old girl with status asthmaticus who developed a grand mal seizure in association with hyponatremia, urinary AVP levels remained high and fluctuated before convulsion; the cause of the convulsion was considered to be water intoxication due to inappropriate ADH secretion. In 19 of 28 patients with moderately severe asthmatic attacks, increases in urinary AVP levels occurred before treatment (300 +/- 80 pg/ml vs. 40 +/- 24 pg/ml (normal controls), p less than 0.01); elevated AVP levels tended to fall in response to intravenous fluid therapy (appropriate ADH secretion) in 2 of 6 patients, but did not fall (inappropriate ADH secretion) in the remaining patients. It is concluded that inappropriate ADH secretion may occur in asthmatic attacks, and that in such a condition there seems to be a potential risk of water intoxication during fluid therapy, as demonstrated in the present patient.
 ...
PMID:Urinary arginine vasopressin in asthma: consideration of fluid therapy. 211 72

Patients in status asthmaticus often have elevated plasma antidiuretic hormone levels. To determine if children in status asthmaticus have impaired water excretion and an increased risk of developing significant hyponatremia when given a fluid challenge, five consecutive patients who showed moderate asthmatic symptoms after taking two doses of epinephrine hydrochloride were given a fluid challenge (20 mL/kg of 5% dextrose in 0.2% normal saline solution given intravenously over 30 minutes followed by maintenance fluids [1,500 mL/sq m/24 hr] for 50 minutes). Urine was collected at 20-minute intervals for measurement of free-water clearance and percent water-load excretion in 80 minutes. This protocol was repeated 24 to 48 hours later, after clinical improvement. None of the patients was hyponatremic during status asthmaticus before water loading. However, four of five patients were mildly hyponatremic (serum sodium level between 130 and 132 mEq/L) between status asthmaticus and after clinical improvement. These same four patients also became mildly hyponatremic after fluid challenge during status asthmaticus. Maximal free-water clearance and percent water load excretion in 80 minutes were significantly lower during status asthmaticus after fluid challenge compared with results obtained after water loading when the patients' conditions were clinically improved. We conclude that patients in status asthmaticus have impaired water excretion after water loading but with a small risk of significant hyponatremia; a patient remaining in status asthmaticus and given large volumes of hypotonic fluid over a prolonged period of time may be at higher risk for significant hyponatremia.
 ...
PMID:Preliminary observation of impaired water excretion in treated status asthmaticus. 394 8