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Standardization of surface electromyography utilized to evaluate patients with dysphagia.

Vaiman M - Head Face Med (2007)

Bottom Line: Patients suspected of having swallowing disorders, could highly benefit from simple diagnostic screening before being referred to specialist evaluations.A previously described normative database for single swallowing and drinking and standard approach to analysis was compared to data on the duration and electric activity of muscles involved in deglutition and with sEMG recordings in order to estimate stages of a swallow.With standardization of the technique and an established normative database, sEMG can serve as a reliable screening method for optimal patient management.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Otolaryngology, Assaf Harofe Medical Center, Affiliated to the Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel. vaimed@yahoo.com

ABSTRACT

Background: Patients suspected of having swallowing disorders, could highly benefit from simple diagnostic screening before being referred to specialist evaluations. We introduce surface electromyography (sEMG) to carry out rapid assessment of such patients and propose suggestions for standardizing sEMGs in order to identify abnormal deglutition.

Methods: Specifics steps for establishing standards for applying the technique for screening purposes (e.g., evaluation of specific muscles), the requirements for diagnostic sEMG equipment, the sEMG technique itself, and defining the tests suitable for assessing deglutition (e.g., saliva, normal, and excessive swallows and uninterrupted drinking of water) are presented in detail. A previously described normative database for single swallowing and drinking and standard approach to analysis was compared to data on the duration and electric activity of muscles involved in deglutition and with sEMG recordings in order to estimate stages of a swallow.

Conclusion: SEMG of swallowing is a simple and reliable method for screening and preliminary differentiation among dysphagia and odynophagia of various origins. This noninvasive radiation-free examination has a low level of discomfort, and is simple, timesaving and inexpensive to perform. With standardization of the technique and an established normative database, sEMG can serve as a reliable screening method for optimal patient management.

No MeSH data available.


Related in: MedlinePlus

A prolonged drinking of a 75 year old subject suffering with influenza (MS = green line, SUB = blue line, and INF = red line locations). It took this subject 46 sec to drink 100 cc of water in 11 swallows. The electric amplitude is characteristically low. INF muscles are more involved in swallowing than usual, thus SUB and INF lines are almost identical.
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Figure 5: A prolonged drinking of a 75 year old subject suffering with influenza (MS = green line, SUB = blue line, and INF = red line locations). It took this subject 46 sec to drink 100 cc of water in 11 swallows. The electric amplitude is characteristically low. INF muscles are more involved in swallowing than usual, thus SUB and INF lines are almost identical.

Mentions: Older people (aged 70+ years) swallow and drink more slowly as do patients with various neurological disorders affecting deglutition. (Fig. 5) The times indicated by an EMG device represent the duration of sEMG activity which lasted longer than the actual time required to pass a bolus from the oral cavity to the esophagus.


Standardization of surface electromyography utilized to evaluate patients with dysphagia.

Vaiman M - Head Face Med (2007)

A prolonged drinking of a 75 year old subject suffering with influenza (MS = green line, SUB = blue line, and INF = red line locations). It took this subject 46 sec to drink 100 cc of water in 11 swallows. The electric amplitude is characteristically low. INF muscles are more involved in swallowing than usual, thus SUB and INF lines are almost identical.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC1904196&req=5

Figure 5: A prolonged drinking of a 75 year old subject suffering with influenza (MS = green line, SUB = blue line, and INF = red line locations). It took this subject 46 sec to drink 100 cc of water in 11 swallows. The electric amplitude is characteristically low. INF muscles are more involved in swallowing than usual, thus SUB and INF lines are almost identical.
Mentions: Older people (aged 70+ years) swallow and drink more slowly as do patients with various neurological disorders affecting deglutition. (Fig. 5) The times indicated by an EMG device represent the duration of sEMG activity which lasted longer than the actual time required to pass a bolus from the oral cavity to the esophagus.

Bottom Line: Patients suspected of having swallowing disorders, could highly benefit from simple diagnostic screening before being referred to specialist evaluations.A previously described normative database for single swallowing and drinking and standard approach to analysis was compared to data on the duration and electric activity of muscles involved in deglutition and with sEMG recordings in order to estimate stages of a swallow.With standardization of the technique and an established normative database, sEMG can serve as a reliable screening method for optimal patient management.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Otolaryngology, Assaf Harofe Medical Center, Affiliated to the Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel. vaimed@yahoo.com

ABSTRACT

Background: Patients suspected of having swallowing disorders, could highly benefit from simple diagnostic screening before being referred to specialist evaluations. We introduce surface electromyography (sEMG) to carry out rapid assessment of such patients and propose suggestions for standardizing sEMGs in order to identify abnormal deglutition.

Methods: Specifics steps for establishing standards for applying the technique for screening purposes (e.g., evaluation of specific muscles), the requirements for diagnostic sEMG equipment, the sEMG technique itself, and defining the tests suitable for assessing deglutition (e.g., saliva, normal, and excessive swallows and uninterrupted drinking of water) are presented in detail. A previously described normative database for single swallowing and drinking and standard approach to analysis was compared to data on the duration and electric activity of muscles involved in deglutition and with sEMG recordings in order to estimate stages of a swallow.

Conclusion: SEMG of swallowing is a simple and reliable method for screening and preliminary differentiation among dysphagia and odynophagia of various origins. This noninvasive radiation-free examination has a low level of discomfort, and is simple, timesaving and inexpensive to perform. With standardization of the technique and an established normative database, sEMG can serve as a reliable screening method for optimal patient management.

No MeSH data available.


Related in: MedlinePlus