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隐性全身性肌强直是非营养不良性肌强直的一种特殊类型。其病情比显性先天性肌强直更为严重。有明显的肌肥大,同时,长期的肌无力又加重了肌强直所造成的障碍。据粗略估计,隐性全身性肌强直的发病率在德意志联邦共和国约为1/50,000,杂合子的频率约为人口的1/108(Becker,1977)。某些杂合子能用肌电图鉴定。两个无亲属关系的肌强直病人的双亲,没有一点肌强直的体征,其肌电图显示了短暂的肌强直性电位。另外三个病人的双亲,肌电图是正常的。此外,肌强直先证者的9个近亲都只有肌强直的“亚临床征”:短暂的叩击性舌肌强直,有时叩击个别肢体肌肉,引起抑制的延期消失。他们的病史或是阴性,或仅有很轻微的症状,或一过性的肌强直性损害,其
Implicit generalized myotonia is a special type of non-malnourished myotonia. Its condition is more severe than dominant congenital myotonia. Significant muscle hypertrophy, while long-term muscle weakness and increased muscle rigidity caused by the obstacles. Rough estimates suggest that the incidence of tactile myotonia is about 1 in 50,000 in the Federal Republic of Germany and about 1 in 108 in the population (Becker, 1977). Some heterozygotes can be identified by EMG. The parents of two unrelated myotonic patients, who had no signs of myotonia and whose EMG showed transient myotonic potentials. The other three parents, EMG is normal. In addition, only nine musculoskeletal “subclinical signs” of mycotic proband’s 9 cousins were transient traumatic tongue ankylosis, sometimes tapping on individual limb muscles, causing the delay in suppression to disappear. Their history is either negative, or only mild symptoms, or transient myotonic damage, which