How Long does Denervation Take in Poliomyelitis? Or is it a Lifetime?”

Şenol, Mehmet Güney; Kaplan, Cengiz; Özdağ, Fatih; Saraçoğlu, Mehmet

doi:10.4103/jnrp.jnrp_173_17

Cited by 5 publications

(5 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These findings were consistent with the literature [5]. Presence of active denervation findings in EMG can be seen in patients with poliomyelitis, and it is known that detection of active denervation is not used to differentiate patients with post-polio syndrome from those without [5,15,16].…”

Section: Discussionsupporting

confidence: 91%

Pattern of muscle involvement according to needle electromyography findings in clinically unaffected extremities of polio survivors with lower extremity weaknesses

Fidancı¹,

Öztürk²,

Köylüoğlu³

et al. 2019

Journal of Surgery and Medicine

View full text Add to dashboard Cite

This is an open access article distributed under the terms of the CreativeCommons Attribution-NonCommercial-NoDerivatives License 4.0 (CC BY-NC-ND 4.0) where it is permissible to download, share, remix, transform, and buildup the work provided it is properly cited. The work cannot be used commercially without permission from the journal. AbstractAim: Late neuromuscular deterioration may be seen in patients with a history of paralytic poliomyelitis. One of these problems is the development of a new weakness in clinically unaffected muscles. We aimed to determine needle electromyography (EMG) findings in these clinically unaffected limb muscles and to contribute to the physiotherapy strategies of poliomyelitis. Methods: Patients with sequelae of poliomyelitis were included in this retrospective cohort study. Needle EMG findings of the patients were reviewed. If there were neurogenic needle EMG findings in the limb or muscle with no weakness, this muscle or limb was considered to be a subclinically affected muscle or limb. Results: Eighteen patients were included in the study. Needle EMG findings of 190 muscles were analyzed. In the lower extremities, 18 (72%) of 25 clinically unaffected muscles had neurogenic needle EMG findings, and 14 (35%) of 40 upper extremity muscles had subclinical involvement. In the lower extremity muscles, this subclinical involvement was significantly higher than in the upper extremity muscles (P=0.004). In clinically unaffected upper and lower extremity muscles, the most prominent neurogenic needle EMG findings were in the deltoideus and vastus lateralis muscles, respectively (P=0.022 and P=0.028, respectively). Conclusion: Subclinical involvement was more prominent in the lower extremity than in the upper extremity in polio survivors with weakness of lower extremity. The most prominent subclinical muscle involvement in the lower and upper extremities was the vastus lateralis and deltoideus muscles, respectively. We think that physical therapy strategies considering these findings will be beneficial for polio survivors.

show abstract

Section: Discussionsupporting

confidence: 91%

Pattern of muscle involvement according to needle electromyography findings in clinically unaffected extremities of polio survivors with lower extremity weaknesses

Fidancı¹,

Öztürk²,

Köylüoğlu³

et al. 2019

Journal of Surgery and Medicine

View full text Add to dashboard Cite

show abstract

“…This finding was important since it showed that the bulbar region was affected slightly. Similar to the literature, in our study, 28% of patients and 6% of the muscles examined showed signs of active denervation [17]. Active denervation findings were mostly observed in the medial gastrocnemius muscle.…”

Section: Discussionsupporting

confidence: 90%

Relevant muscle selection for needle electromyography examination in polio survivors

Fidancı

Öztürk

Arlıer

2021

The European Research Journal

View full text Add to dashboard Cite

Objectives: Needle electromyography (EMG) has an important role in the diagnosis of poliomyelitis. Since needle EMG is a painful and time consuming procedure, selecting the most effective muscles for needle EMG is important. We aimed to determine the clinically or subclinically affected regions in polio survivors by examining the minimum number of muscles with EMG. Methods: Polio survivors with weakness in at least one limb were included in this retrospective cohort study. The extremities were divided into two groups: 1) Group 1: The extremities with Medical Research Council score of ≤ 1 in at least one muscle, 2) Group 2: Clinically unaffected or mildly to moderately affected extremities that do not meet the criteria of Group 1. The needle EMG findings of the muscles were analyzed. Results: Twenty-nine polio survivors were included in the study. Needle EMG findings of 352 muscles were reviewed. Needle EMG findings in 57 lower extremities and thirty-two upper extremities were analyzed. There was no upper extremity meeting the criteria of Group 1. Thirty-eight lower extremities were included in Group 1. The amplitudes and durations of motor unit action potentials (MUAPs) were not different between the muscles of the Group 1 lower extremities (p > 0.05). Among the muscles of Group 2 upper and lower extremities, the amplitude and duration of MUAPs were higher in the deltoid and the vastus lateralis muscles compared to the other muscles, respectively (p = 0.002 and p = 0.003 for upper extremity muscles; p = 0.005 and p < 0.001 for lower extremity muscles). Conclusions: Using the needle EMG findings, an algorithm was made to determine the affected regions. Thus, the affected regions can be identified by applying needle EMG to a minimum number of muscles.

show abstract

“…In our study, PSWs or FPs were present in 23.5% of the patients. 7 However, unlike our study, patients with radiculopathy were not included in the study of Şenol et al Only one patient with PSWs/FPs did not have a lumbosacral MRI, and most of the remaining patients with PSWs/FPs had concordant nerve segments of muscles with these active denervation findings and radiculopathy segments found on MRI. Considering that patients with radiculopathy were not included in the study by Şenol et al, a higher rate of PSWs/FPs was observed compared to our study.…”

Section: Discussionmentioning

confidence: 65%

“…In addition, active denervation findings such as PSWs/FPs may be present even after years of poliomyelitis. [5][6][7] In this current study, PSWs/FPs were investigated in polio survivors with sequelae.…”

Section: Discussionmentioning

confidence: 99%

“…In the acute phase of poliomyelitis, positive sharp waves (PSWs) and fibrillation potentials (FPs) are observed, and then neurogenic motor unit action potentials (MUAPs) develop within weeks. [5][6][7] In polio survivors, these needle EMG abnormalities can be observed in clinically affected extremity muscles, as well as in extremity muscles without weakness. 3,5 Finding the characteristics of PSWs/ FPs in polio survivors was the main goal of the study.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Positive sharp waves and fibrillation potentials in polio survivors with sequelae: Are they due to late deterioration or radiculopathy?

Buturak¹,

Fidancı²

2022

NeuroAsia

View full text Add to dashboard Cite

Background & Objective: Needle electromyography (EMG) abnormalities can be observed in clinically affected or unaffected muscles in polio survivors. The primary aim of this study is to evaluate the positive sharp waves (PSWs) and fibrillation potentials (FPs) that can be observed in polio survivors. In addition, the presence of post-polio syndrome and radiculopathy was investigated in patients with PSWs/FPs. Methods: Clinical features and needle EMG findings of polio survivors with sequelae who applied to our neurophysiology laboratory between August 2018 and January 2021 were analyzed retrospectively. Cervical and lumbosacral magnetic resonance imaging (MRI) of polio survivors with PSWs/FPs were included in the analyses. In addition, polio survivors were divided into groups with and without post-polio syndrome. Results: Fifty-one polio survivors (33 male, 18 female) were included in the study. The mean age of the patients was 49.5±7.5 years. There were 13 (25.5%) polio survivors with post-polio syndrome. Needle EMG findings of 590 muscles were analyzed. PSWs/ FPs were found in 11 medial gastrocnemius, four iliopsoas, four tibialis anterior, two vastus lateralis muscles, and one deltoid muscle. PSWs or FPs were present in 12 (23.5%) of patients. PSWs/FPs were present in three (23.1%) and nine (23.7%) polio survivors with and without post-polio syndrome, respectively (p>0.05). Of the 12 patients with PSWs/FPs, 11 had cervical and lumbosacral MRIs. In eight (72.7%) of these 11 patients with PSWs/FPs, the nerve segment of the muscle with PSWs/FPs and the segment of radiculopathy detected by MRI were compatible with each other. Conclusions: This study indicated that PSWs/FPs may be present in polio survivors. PSWs/FPs may be due to radiculopathy and/or late deterioration. It was concluded that PSWs/FPs are not a parameter that can be used to differentiate polio survivors with and without post-polio syndrome.

show abstract

How Long does Denervation Take in Poliomyelitis? Or is it a Lifetime?”

Cited by 5 publications

References 15 publications

Pattern of muscle involvement according to needle electromyography findings in clinically unaffected extremities of polio survivors with lower extremity weaknesses

Pattern of muscle involvement according to needle electromyography findings in clinically unaffected extremities of polio survivors with lower extremity weaknesses

Relevant muscle selection for needle electromyography examination in polio survivors

Positive sharp waves and fibrillation potentials in polio survivors with sequelae: Are they due to late deterioration or radiculopathy?

Contact Info

Product

Resources

About