Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0020538 (hypertension)
 170,190 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The role of CO2 in hyperbaric oxygen toxicity was investigated by administering acetazolamide (Diamox), Tris buffer [tris(hydroxymethyl)aminomethane], and sodium bicarbonate by i.p. injection, and by exposure of other groups of animals to an atmosphere of 5% CO2 and 95% O2. All animals were placed in a pressure chamber and maintained at 50 psig in 100% O2 until death. The Tris buffer and the sodium bicarbonate buffer significantly extended time to onset of convulsions and to time of death. Acetazolamide and also 5% CO2 shortened time to onset of convulsions and significantly shortened survival time. These results suggest that increased tissue levels of CO2 play an important role in hyperbaric oxygen toxicity. The cause of death in our animals exposed to hyperbaric oxygen was pulmonary edema secondary to a systemic hypertension.
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PMID:Acetazolamide and CO2 in hyperbaric oxygen toxicity. 680 59

Summary The case is described of a 12-year-old girl presenting with raised intracranial pressure without ventricular dilatation and a type 1 Chiari malformation. This was taken to be a coincidental association of pseudotumour cerebri and the Chiari malformation. Treatment of the pseudotumour with Diamox gave rapid and sustained relief of the intracranial hypertension without change in the Chiari malformation. In addition, a series of 156 cases of pseudotumour cerebri was reviewed for evidence of the Chiari malf ormation. An overall incidence of 1.3%, rising to 2.7% in patients with MR scanning [excluding the case described] was found.
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PMID:Pseudotumour cerebri occurring in association with the Chiari malformation. 1174 33