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Definition :
It is a chronic autoimmune neuromuscular disease characterized by varying degree of weakness of skeletal muscles of the body.
It is purely a motor disorder with no effects on sensation and co-ordination.
Etiology : Genetic
Abnormality of thymus gland
Thymic hyperplasia
Women at earlier age (20-40 years)
Men at older age (60-70 years)
Diagnostic Test : Anticholinesterase test :
normal value – 0.0 to 0.25 nmol/L
Endrophonium chloride test:
endrophonium chloride (tensilon) 2mg to 10 mg intravenously
Repetative nerve stimulation test
MRI for thymus gland enlargement
Medical management : Pharmacological therapy:
Pyridostigmine bromide (anticholinesterasemedication)
Immunosuppresive therapy
Cytotoxic medications
Azathioprine {T lymphocyte inhibitor}
IVIG (Intravenous immune globulin)
Nursing management : Assessment – neurological examination
- extent of respiratory involvement
Assistance in activities of daily living
Nutrition through eternal route
Aspiration precautions
Skin care
Effective method of communication
Nursing diagnosis : Ineffective breathing pattern related to respiratory
muscle weakness
Ineffective airway clearance related to tracheal secretions
Impaired physical mobility related to weakness of voluntary muscle
Imbalanced nutrition less than body requirement related to dysphagia, intubation or muscle paralysis
Risk for aspiration related to weakness of bulbar muscle
Self care deficit related to muscle weakness
Risk for infection related to immunosupressive status or multiple invasive lines