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KMID : 1130620160120030361
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Journal of Clinical Neurology
2016 Volume.12 No. 3 p.361 ~ p.367
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Reference Range of Respiratory Muscle Strength and Its Clinical Application in Amyotrophic Lateral Sclerosis: A Single-Center Study
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Park Kee-Hong
Kim Rock-Bum
Yang Ji-Won
Oh Jung-Hwan
Park Su-Yeon
Kim Dong-Gun
Shin Je-Young
Sung Jung-Joon
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Abstract
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Background and Purpose : Evaluating respiratory function is important in neuromuscular diseases. This study explored the reference ranges of the maximal inspiratory pressure (MIP), maximal expiratory pressure (MEP), and sniff nasal inspiratory pressure (SNIP) in healthy adults, and applied them to amyotrophic lateral sclerosis (ALS) patients.
Methods : MIP, MEP, and SNIP were measured in 67 healthy volunteers aged from 21 to 82 years. Reference ranges were evaluated by multivariate regression analysis using the generalized additive modeling of location, scale, and shape method. Thirty-six ALS patients were reviewed retrospectively, and abnormal values of MIP, MEP, and SNIP were determined according to the reference ranges.
Results : MIP, MEP, and SNIP were abnormal in 57.1%, 51.4%, and 25.7% of the ALS patients, respectively. MIP and SNIP were significantly correlated with the degree of restrictive pattern and respiratory symptoms. The ALS Functional Rating Scale-Revised score was correlated with SNIP.
Conclusions : This study has provided the reference range of respiratory muscle strength in healthy adults. This range is suitable for evaluating respiratory function in ALS patients.
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KEYWORD
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maximal inspiratory pressure, maximal expiratory pressure, sniff nasal inspiratory pressure, amyotrophic lateral sclerosis
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