Cases reported "Enuresis"

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1/6. Cerebral oedema in enuretic children during low-dose desmopressin treatment: a preventable complication.

    Seven cases of cerebral oedema have been observed in enuretic children during low-dose desmopressin (DDAVP) treatment given in a dose of 7-21 microg daily in the czech republic between 1995 and 1999, after the drug started to be marketed for this indication and delivered in simple bottles with a dropper. All seven children (age 5-11 years, four boys) experienced a period of unconsciousness but all recovered without sequelae. In most cases, safety measures were underestimated and natraemia was not regularly controlled. Two children developed cerebral oedema after excessive water intake in preparation for uroflowmetry, another one drank much during a hot summer day, in one diabetes insipidus was not recognised and two children were clearly non-compliant with reduced fluid intake on a long-term basis. Only in one child, no risk factor was found. Conclusion. Proper selection and instruction of patients is needed to avert cerebral oedema during treatment with desmopressin for nocturnal enuresis.
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keywords = water
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2/6. Coma and seizures due to severe hyponatremia and water intoxication in an adult with intranasal desmopressin therapy for nocturnal enuresis.

    Desmopressin, a synthetic analogue of the antidiuretic hormone, is an effective medication for primary nocturnal enuresis for both children and adults. Its safety is well established. Although it has a favorable side effect profile, because of its pharmacological effect, intranasal desmopressin can rarely induce water intoxication with profound hyponatremia if given without adequate restriction of water intake. The authors describe an adult patient with water intoxication and severe hyponatremia accompanied by loss of consciousness and seizures after 2-day intranasal administration of desmopressin. The present and the previously reported cases emphasize the need for greater awareness of the development of this serious and potentiallyfatal complication. In addition, to adjust the drug to the lowest required dosage, adequate restriction of water intake is recommended, and serum levels of sodium should be measured periodically to allow for early detection of water intoxication and hyponatremia.
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keywords = water
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3/6. Multiple intradural arachnoid diverticuli: the need for complete myelography.

    A 12-year-old boy presented with enuresis, leg weakness, and lower extremity spasticity. An initial lumbar water-soluble contrast myelogram disclosed an arachnoid diverticulum. After the insertion of a cystopleural shunt, the patient improved and was dry. However, 2 months later the patient became enuretic and developed weakness. Repeat myelography showed a second arachnoid diverticulum located in the midthoracic region. This second diverticulum was treated by marsupialization of the cyst wall to the subfascial space. The authors stress the need for complete myelography in patients with intradural spinal arachnoid diverticuli and present a brief review of the literature.
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keywords = water
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4/6. Hyponatraemia and cerebral convulsion due to short term DDAVP therapy for control of enuresis nocturna.

    Desmopressin (DDAVP) is frequently used in the treatment of primary isolated enuresis nocturna if other approaches have failed. We report a further case of hyponatraemia and cerebral convulsion due to water intoxication after intranasal DDAVP application by a 6 year-old boy with enuresis. CONCLUSION: Although adverse reactions in DDAVP (e.g. hyponatraemia) are rare, it should not be considered as the first choice treatment of enuresis nocturna and only be used with caution.
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keywords = water
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5/6. water intoxication in a patient with the prader-willi syndrome treated with desmopressin for nocturnal enuresis.

    PURPOSE: We report on a girl with the prader-willi syndrome who received desmopressin for nocturnal enuresis, and water intoxication developed after she ingested a large amount of fluid. MATERIALS AND methods: The patient received 10 mg. desmopressin at bedtime for enuresis. She was hospitalized when a major motor seizure and coma (glasgow coma scale 8) occurred after ingesting 48 ounces of fluid. Treatment included 3% saline, followed by 5% dextrose in water and sodium chloride given intravenously. RESULTS: serum sodium increased to 128 mEq./l. and serum glucose remained normal. Computerized tomography and magnetic resonance imaging of the head were normal and revealed no evidence of cerebral pontine myelinosis. Patient consciousness returned to normal by day 5 after the seizure. CONCLUSIONS: In patients treated with desmopressin the risk of a seizure or altered level of consciousness can be minimized by not ingesting large quantities of fluid. We recommend that patients drink no more than 8 ounces of fluid on any evening that desmopressin is administered.
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6/6. Intranasal desmopressin-associated hyponatremia: a case report and literature review.

    We present a case of a 29-year-old woman with a long history of nocturnal enuresis who developed symptomatic hyponatremia from water intoxication shortly after beginning desmopressin. A medline search in the English language revealed 13 prior case reports. All patients presented with seizure, mental status changes, or both. Two distinct presentations occurred: one group of patients maintained a stable course with desmopressin and developed symptoms related to an outside factor. The other group of patients were new to desmopressin and had a profound water intoxication response from its use. While the underlying cause was from simple overhydration, the quickness of this unanticipated adverse effect is noteworthy. The importance of counseling to ensure a family's and a patient's understanding of the effects of desmopressin as well as monitoring electrolytes periodically may help identify and prevent this serious iatrogenic complication.
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