Active clinical trials for "Muscle Weakness"

The present study is a prospective cohort study aiming to improve the clinical capacity in the diagnosis and natural history of Chinese patients with myasthenia gravis (MG). 300 MG patients are planned to recruit, document and prospectively follow up. Management of screening test and cohort manifestation are studied.

The average annual incidence of Myasthenia gravis is up to (8.0-20.0) / 100,000 people. Myasthenia gravis is an acquired autoimmune disease. All skeletal muscles of patients may be involved. When ocular muscles are involved, ptosis, diplopia and other symptoms may occur. When the laryngopharyngeal muscles are involved, the patient may develop dysarthria, dysphagia and other symptoms. However, when the respiratory muscles are involved, patients will have difficulty in breathing, and some patients may develope myasthenia crisis, and artificial assisted respiratory therapy is often needed. This study is a prospective observational study, in which patients are continuously enrolled, basic information of patients is collected, and biological samples are collected. The purpose of this study is to improve the diagnosis and prognosis of myasthenia gravis patients.

Respiratory failure following extubation causes significant morbidity and increases mortality in teh surgical intensive care unit (SICU). However the causes of respiratory failure following extubation remain poorly understood. The investigators hypothesize that extubation failure can be predicted based on preoperative risk factors as well as ICU acquired morbidities including muscle weakness and renal failure.

It is the aim of this project to develop and validate a German language screening questionnaire for symptoms of respiratory muscle weakness and sleep-disordered breathing (SDB) in patients with neuromuscular disorders.

It is a prospective cohort study.The primiparas in six geographic regions of China are recruited to observe the natural recovery of pelvic floor muscle. The pelvic floor muscle function is evaluated at 6 weeks,3 months and 12 months after delivery.

Ocular myasthenia gravis (OMG) is an autoimmune neuromuscular disease mediated by pathogenic autoantibodies. Its etiology and pathogenesis are not completely clear. The occurrence and development of OMG are the result of the joint participation of genetic factors, environmental factors and immune factors. The role of infectious factors in the pathogenesis of autoimmune diseases is a hot topic in the international discussion.By analyzing the difference in the positive rate and titer of CMV antibodies between ocular myasthenia gravis and healthy people. By analyzing the correlation between the positive rate and titer of CMV antibodies and ocular myasthenia gravis clinical manifestations, acetylcholine receptor antibodies, ESR, hypersensitive C-reactive protein, complement C3, complement C4 and thymus status.To investigate the correlation between cytomegalovirus and ocular myasthenia gravis. It can provide new insights for further studies on the etiology and possible pathogenesis of ocular myasthenia gravis.