RT Journal Article SR Electronic T1 Changes in respiratory muscle function after neostigmine injection in patients with myasthenia gravis JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 119 OP 121 DO 10.1183/09031936.93.01020119 VO 1 IS 2 A1 L Radwan A1 M Strugalska A1 A Koziorowski YR 1988 UL http://erj.ersjournals.com/content/1/2/119.abstract AB In sixteen patients with myasthenia gravis, the weakness of respiratory muscles, especially of expiratory, caused some disturbances in lung function. Thirty minutes after injection of neostigmine, general improvement of muscle function was accompanied by an increase of strength and endurance of respiratory muscles. The mean value of maximal inspiratory mouth pressure (PImax) increased by 33%, maximal expiratory mouth pressure (PEmax) by 23.5% and maximal voluntary ventilation (MVV) by 21%. As a consequence of these changes amelioration of lung function indices was found, vital capacity increasing on average by 13% and residual volume decreasing by 12.5%. We concluded that patients with generalized myasthenia gravis have disturbances in lung function which may be partially improved by neostigmine injection or other anticholinesterase agents.