alexa Long-term survival of a patient with congenital central hypoventilation syndrome despite the lack of continuous ventilatory support.
Genetics & Molecular Biology

Genetics & Molecular Biology

Journal of Genetic Syndromes & Gene Therapy

Author(s): Windisch W, Hennings E, Storre JH, Matthys H, Sorichter S

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Abstract Untreated idiopathic congenital central hypoventilation syndrome (CCHS) is thought to cause infant death within 1-2 months. Here we present an adult patient with CCHS who survived without continuous ventilatory support, despite hypoventilation from early childhood onward. The diagnosis was confirmed at the age of 22 years, when the patient presented with hypoventilation during the night (PaCO2 60 mm Hg, PaO2 56 mm Hg, pH 7.32 HCO3- 30 mmol/l) but hyperventilation when awake (PaCO2 26 mm Hg, PaO2 81 mm Hg, pH 7.56, HCO3- 23 mmol/l). The maximal hematocrit was 77\%. Despite mental retardation, noninvasive positive pressure ventilation (NPPV) could be successfully established. NPPV-supported ventilation during the night (PaCO2 36, PaO2 84 mm Hg, pH 7.47, HCO3- 25 mmol/l) reduced hematocrit values (40.6 to 36.8\%) over a period of 4 years. In conclusion, long-term survival with CCHS is possible without continuous ventilatory support. Spontaneous improvement of hypoventilation during sleep throughout childhood is possible and hyperventilation during wakefulness may occur in patients with CCHS. CCHS can be managed with NPPV despite mental retardation, even over a long-term period. Copyright 2004 S. Karger AG, Basel This article was published in Respiration and referenced in Journal of Genetic Syndromes & Gene Therapy

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