What question did this study set out to answer?

To determine whether nocturnal oxygen desaturation and respiratory function parameters serve as independent predictors of disease progression and survival in advanced Duchenne muscular dystrophy.

July 1, 1999American Journal of Respiratory and Critical Care Medicine

Nocturnal Oxygenation and Prognosis in Duchenne Muscular Dystrophy

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Authors

MPMargaret PhillipsUniversity of Vermont PSPhil E M SmithRoche (Switzerland)NCN CarrollUniversité Claude Bernard Lyon 1

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Implication

Longitudinal study reveals vital capacity and nocturnal oxygenation predict survival in Duchenne muscular dystrophy, indicating reduced lung volume is a critical prognostic marker.

Key Points

To determine whether nocturnal oxygen desaturation and respiratory function parameters serve as independent predictors of disease progression and survival in advanced Duchenne muscular dystrophy.
Followed 18 patients with advanced Duchenne muscular dystrophy for 10 years following an initial nocturnal respiratory sleep study until death or the initiation of nasal ventilation.
Assessed baseline body mass index, arterial blood gas tensions (PaCO2), maximal respiratory mouth pressures, and spirometry, with serial vital capacity tracked in 11 patients.
Median survival from initial evaluation was 50 months (range, 13 to 89 months), correlating significantly with PaCO2 (r = -0.72, p < 0.005), minimal nocturnal SaO2 (r = 0.62, p < 0.007), and vital capacity (r = 0.65, p < 0.005).
Cox regression identified a vital capacity under 1 L at initial study as the single best predictor of subsequent survival, and age when vital capacity dropped below 1 L correlated with age of death (r = 0.79, p < 0.004).

Cite This Study

Phillips et al. (1999) studied this question.

synapsesocial.com/papers/6a8ab265eeed409805de9970 https://doi.org/10.1164/ajrccm.160.1.9805055

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Implication

Longitudinal study reveals vital capacity and nocturnal oxygenation predict survival in Duchenne muscular dystrophy, indicating reduced lung volume is a critical prognostic marker.

Nocturnal Oxygenation and Prognosis in Duchenne Muscular Dystrophy

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Implication

Key Points

Cite This Study

Nocturnal Oxygenation and Prognosis in Duchenne Muscular Dystrophy

Discussion

Member takes

Implication

Key Points

Cite This Study

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