Does grip strength reflect isokinetic muscle strength in lower limbs in patients with chronic inflammatory demyelinating polyneuropathy?

2018 ◽  
Vol 58 (3) ◽  
pp. 449-452 ◽  
Author(s):  
Kirsten L. Knak ◽  
Linda K. Andersen ◽  
Ingelise Christiansen ◽  
Lars K. Markvardsen
2021 ◽  
Vol 12 ◽  
Author(s):  
Kang Du ◽  
Ke Xu ◽  
Si Cheng ◽  
He Lv ◽  
Wei Zhang ◽  
...  

Backgrounds: Transthyretin familial amyloid polyneuropathy (TTR-FAP) is frequently misdiagnosed as chronic inflammatory demyelinating polyneuropathy (CIDP) because of similar phenotypes in the two diseases. This study was intended to identify the role of nerve ultrasonography in evaluating TTR-FAP and CIDP.Methods: Eighteen patients with TTR-FAP, 13 patients with CIDP, and 14 healthy controls (HC) were enrolled in this study. Consecutive ultrasonography scanning was performed in six pairs of nerves of bilateral limbs with 30 sites. The cross-sectional areas (CSAs) and CSA variability data of different groups were calculated and compared.Results: Both TTR-FAP and CIDP showed larger CSAs at most sites of both upper and lower limbs than in HC groups. CIDP patients had larger CSAs than TTR-FAP patients at 8/15 of these sites, especially at U1-3, Sci2 sites (p < 0.01). However, the CSAs at above sites were not a credible index to differentiate TTR-FAP from CIDP with a low area under the curve (<0.8). The CSA variability of median nerves was significantly higher in CIDP than in TTR-FAP and HC groups, with high sensitivity (0.692) and specificity (0.833) to differentiate CIDP from TTR-FAP. The CSA variability of ulnar nerves was not significantly different between the three groups. For the TTR-FAP group, mean CSAs at each site were not correlated with different Coutinho stages, modified polyneuropathy disability, course of sensory motor peripheral neuropathy, Neuropathy Impairment Score, or Norfolk Quality of life-diabetic neuropathy score. The mean compound muscle action potential of ulnar nerves was negatively correlated with the mean CSAs of ulnar nerves.Interpretation: TTR-FAP patients had milder nerve enlargement with less variability in CSAs of median nerves than those with CIDP, suggesting that nerve ultrasound can be a potential useful auxiliary tool to help differentiate the two neuropathies.


Vaccines ◽  
2021 ◽  
Vol 9 (12) ◽  
pp. 1502
Author(s):  
Caterina Francesca Bagella ◽  
Davide G. Corda ◽  
Pietro Zara ◽  
Antonio Emanuele Elia ◽  
Elisa Ruiu ◽  
...  

Recently several patients, who developed Guillain–Barré syndrome characterized by prominent bifacial weakness after ChAdOx1 nCoV-19 vaccination, were described from different centers. We recently observed a patient who developed a similar syndrome, later in the follow up he showed worsening of the neuropathy two months after the initial presentation. Repeat EMG showed reduced nerve sensory and motor conduction velocities of both upper and lower limbs, and a diagnosis of chronic inflammatory demyelinating polyneuropathy (typical CIDP) was made according to established criteria. Our report expands on the possible outcomes in patients who develop Guillain–Barrè syndrome after COVID-19 vaccinations and suggest that close monitoring after the acute phase is needed in these patients to exclude a chronic evolution of the disease, which has important implications for long-term treatment.


Author(s):  
A.S. Rizvanova ◽  
E.A. Mel'nik ◽  
D.A. Grishina ◽  
N.A. Suponeva

Lewis-Sumner syndrome is the most common atypical form of chronic inflammatory demyelinating polyneuropathy (CIDP). In most patients, the disease is slowly progressive, which slows down the correct diagnosis. Timely diagnosis in some cases is also complicated by an abnormal primary lesion of the lower limb nerves in patients with Lewis-Sumner syndrome, for whom the typical clinical picture is upper flaccid distal paraparesis. The objective of the study is to determine the frequency of Lewis-Sumner syndrome (LSS), with the lower limb nerve onset; to characterize clinical and paraclinical characteristics of patients with the syndrome. Materials and Methods. The authors analyzed clinical data, results of stimulation electroneuromyography and ultrasound examination of peripheral nerves of 36 LSS patients. Results. The authors observed a high percentage (44 %) of LSS patients with lower limb nerve onset. However, changes in the neurophysiological and sonographic examination of the lower limb nerves, specific for CIDP, were not revealed. Changes typical of dysimmune neuropathy were verified only in the study of clinically intact long upper limb nerves. Conclusion. In asymmetric neuropathy of the lower limbs of idiopathic genesis, one should remember about LSS and, even despite the presence of symptoms only in the lower limbs, examine the peripheral nerves of the upper limbs. Key words: chronic inflammatory demyelinating polyneuropathy, Lewis-Sumner syndrome, atypical form. Синдром Льюиса – Самнера является наиболее частой атипичной формой хронической воспалительной демиелинизирующей полинейропатии (ХВДП). У большинства больных заболевание носит медленно прогрессирующий характер, что является одним из факторов увеличения сроков постановки верного диагноза. Своевременную диагностику в ряде случаев затрудняет и нехарактерное первичное поражение нервов ног у пациентов с синдромом Льюиса – Самнера, для которых типичной клинической картиной является верхний вялый дистальный парапарез. Цель исследования: определить частоту встречаемости синдрома Льюиса – Самнера (СЛС), дебютирующего с поражения нервов ног; охарактеризовать клинические и параклинические особенности больных с данным синдромом. Материалы и методы. Проанализированы клинические данные, результаты стимуляционной электронейромиографии и ультразвукового исследования периферических нервов 36 пациентов с СЛС. Результаты. Установлен высокий процент (44 %) встречаемости пациентов с СЛС с дебютом с поражения нервов ног. Однако специфические, характерные для ХВДП, изменения при нейрофизиологическом и сонографическом исследовании нервов ног не выявлены. Изменения, типичные для дизиммунной нейропатии, верифицированы только при исследовании клинически интактных длинных нервов рук. Выводы. В случаях асимметричной нейропатии нижних конечностей идиопатического генеза следует иметь настороженность в отношении СЛС и, даже несмотря на наличие симптоматики только в нижних конечностях, обследовать периферические нервы рук. Ключевые слова: хроническая воспалительная демиелинизирующая полинейропатия, синдром Льюиса – Самнера, атипичная форма.


PeerJ ◽  
2019 ◽  
Vol 7 ◽  
pp. e6969 ◽  
Author(s):  
Lars Kjøbsted Markvardsen ◽  
Stine Bruun-Sørensen ◽  
Ingelise Christiansen ◽  
Henning Andersen

Background Chronic inflammatory demyelinating polyneuropathy (CIDP) can be successfully treated with immunoglobulin either intravenously (IVIG) or subcutaneously (SCIG). Measurement of plasma immunoglobulin G levels (P-IgG) and its correlation to clinical improvement has shown conflicting results. This study aims to clarify whether changes in P-IgG are related to clinical development in patients with CIDP treated with IVIG or SCIG. Methods Patients from five previous studies treated with either IVIG or SCIG with evaluation at baseline and re-evaluation after two or 10/12 weeks, respectively were included. At evaluation and re-evaluation, the following tests were done: combined isokinetic muscle strength (cIKS), grip strength, 9-hole-peg test (9-HPT), 40-meter-walk test (40-MWT), clinical examination of muscle strength score by the Medical Research Council (MRC) and measurement of plasma immunoglobulin G (P-IgG). Results Fifty-five patients were included in the IVIG group and 41 in the SCIG group. There was no correlation between the changes in P-IgG and cIKS in neither the IVIG group (r = 0.137, p = 0.32) nor the SCIG group (r =  − 0.048, p = 0.77). Similarly, no correlations could be demonstrated between P-IgG and grip strength, 9-HPT, 40-MWT or MRC. Conclusions In patients with CIDP receiving SCIG or IVIG, changes in P-IgG during treatment did not correlate with changes in muscle strength or other motor performance skills.


Sign in / Sign up

Export Citation Format

Share Document