Brain, Vol. 115, No. 2, 479-494, 1992
© 1992 Oxford University Press
research-article |
RESPIRATORY INVOLVEMENT IN MULTIPLE SCLEROSIS
1Batten/Harris Unit, National Hospital for Neurology and Neurosurgery London, UK 2Lane Fox Respiratory Unit, St Thomas' Hospital London, UK
Correspondence to:
Correspondence to Dr R. S. Howard, National Hospital for Neurology and Neurosurgery, Queen Square, London WC1N 3BG, UK
Respiratory complications occur in advanced multiple sclerosis (MS) but may also complicate acute relapses earlier in the disease. We present 19 patients with MS who developed respiratory complications at a mean of 5.9 (range 112) yrs after the onset of neurological symptoms.
Fourteen patients developed severe respiratory insufficiency presenting with a combination of reduced forced vital capacity (FVC), hypoxaemia or hypercapnia (12 patients) and respiratory arrest (four patients). Two patients presented with apneustic breathing, one with paroxysmal hyperventilation, one with obstructive sleep apnoea and one with bulbar weakness leading to aspiration pneumonia. Respiratory muscle weakness was a major factor in 14 patients (predominantly diaphragm involvement in six), bulbar weakness in seven patients, impaired voluntary control in three and impaired automatic control in three.
Twelve patients received mechanical respiratory support of whom seven have subsequently died The methods of support used were intermittent positive pressure ventilation (nine patients), iron lung (three), cuirass (two) and rocking bed (one) Six patients were maintained on respiratory support until they died after intervals varying from 24 h to 6 yrs (mean 17.7 mths). Five patients received temporary ventilation for between 6 d and 42 d: of these four remain alive at up to 4 yrs and one died after 16 yrs. One patient remains on domiciliary nasal intermittent positive pressure ventilation (IPPV) after 1 yr
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Received June 20, 1991. Revised December 31, 1991. Accepted January 30, 1992.
*Present address: University of Wales College of Medicine, Heath Park, Cardiff CF4 4XW, UK
**Present address Radcliffe Infirmary, Woodstock Road, Oxford OX2 6HE, UK.
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