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Electrical injury in relation to voltage, "no-let-go" phenomenon, symptoms and perceived safety culture: a survey of Swedish male electricians
Örebro universitet, Institutionen för medicinska vetenskaper. Department of Occupational and Environmental Medicine, Faculty of Medicine and Health, Örebro University, Örebro, Sweden; Department of Physiotherapy, Faculty of Medicine and Health, Örebro University, Örebro, Sweden.
Örebro universitet, Institutionen för hälsovetenskaper. Region Örebro län. Department of Medicine.ORCID-id: 0000-0002-9760-3785
Division of Occupational and Environmental Medicine, Scania University Hospital, Lund, Sweden.
Ergonomics and Aerosol Technology, Department of Design Sciences, Lund University, Lund, Sweden.
Vise andre og tillknytning
2016 (engelsk)Inngår i: International Archives of Occupational and Environmental Health, ISSN 0340-0131, E-ISSN 1432-1246, Vol. 89, nr 2, s. 261-270Artikkel i tidsskrift (Fagfellevurdert) Published
Resurstyp
Text
Abstract [en]

Professional electricians are highly subjected to electrical injuries. Previous studies describing symptoms after electrical injury have not included people with less severe initial injuries. The purpose of the present study was to describe symptoms at different time points after electrical injury, the impact of "no-let-go" phenomenon and different electrical potential [high voltage (HV) vs. low voltage (LV)], and the safety culture at the workplace.

A retrospective survey was conducted with 523 Swedish electricians. Two questionnaires were issued: the first to identify electricians who had experienced electrical injury and the second to gain information about symptoms and safety culture. Self-reported symptoms were described at different time points following injury. Symptoms for HV and LV accidents were compared. Occurrence or nonoccurrence of "no-let-go" phenomenon was analysed using two-tailed Chi-2. Safety culture was assessed with a validated questionnaire.

Nearly all reported having symptoms directly after the injury, mainly paraesthesia and pain. For the first weeks after injury, pain and muscle weakness dominated. The most frequently occurring symptoms at follow-up were pain, muscle weakness and loss of sensation. HV injuries and "no-let go" phenomenon were associated with more sustained symptoms. Deficiencies in the reporting routines were present, as well as shortage of preventive measures.

The results indicate that symptoms are reported also long time after an electrical injury and that special attention should be paid to HV injuries and "no-let go" accidents. The workplace routines to reduce the number of work-related electrical injuries for Swedish electricians can be improved.

sted, utgiver, år, opplag, sider
Springer, 2016. Vol. 89, nr 2, s. 261-270
Emneord [en]
Electrical injury, Low-voltage injury, High-voltage injury, Safety management, Neurological symptoms, Pain
HSV kategori
Forskningsprogram
Folkhälsovetenskap
Identifikatorer
URN: urn:nbn:se:oru:diva-48474DOI: 10.1007/s00420-015-1069-3ISI: 000368806500008PubMedID: 26186954Scopus ID: 2-s2.0-84955733403OAI: oai:DiVA.org:oru-48474DiVA, id: diva2:906094
Forskningsfinansiär
Forte, Swedish Research Council for Health, Working Life and Welfare, 2010-0561
Merknad

Funding Agency:

Örebro Research Committee

Tilgjengelig fra: 2016-02-23 Laget: 2016-02-23 Sist oppdatert: 2022-11-21bibliografisk kontrollert
Inngår i avhandling
1. Self-reported symptoms and neurosensory function after electrical accidents: a survey among Swedish male electricians
Åpne denne publikasjonen i ny fane eller vindu >>Self-reported symptoms and neurosensory function after electrical accidents: a survey among Swedish male electricians
2016 (engelsk)Licentiatavhandling, med artikler (Annet vitenskapelig)
Abstract [en]

Professionals working in electrical fields are at risk for accidental exposure to electricity on a daily basis. Electrical accidents can cause long-term sequelae manifesting as neurological symptoms, including in the peripheral nervous system.

The overall aim of this licentiate thesis was to describe the occurrence of selfreported and neurosensory symptoms after electrical accidents. Specifically, this thesis aimed to I) describe self-reported symptoms at different points in time; II) assess neurosensory function in relation to previous electrical accidents; III) evaluate the impact of high vs. low voltage as well as that of the no-let-go phenomenon; and IV) gain knowledge about the safety culture among Swedish electricians.

A retrospective survey including 523 Swedish male electricians was conducted. Electricians reporting persistent symptoms were invited to a clinical examination that included quantitative sensory testing (QST); 23 electricians participated. The most commonly self-reported symptoms associated with electrical accidents were pain, reduced sensation and reduced muscle function. For a small percentage, these symptoms were persistent. Reduced neurosensory function with regard to thermal perception was determined using QST and functional testing and was particularly evident in the thermal perception tests; roughly half of the group exhibited abnormally reduced clinical warmth and cold perception thresholds and tactile gnosis test values, the latter of which were all below normal except for those of two electricians. The findings also indicate that electricians accidentally exposed to high voltage (HV) frequently report more symptoms than do electricians exposed to low voltage (LV). There were deficiencies in the preventative efforts and reporting routines pertinent to potential electrical accidents. In summary, the main results of this licentiate thesis show that sensory symptoms can be persistent, especially after an HV accident, and that these selfreported symptoms can be manifested as injuries on the small nerve fibres. The results of the present study can provide methods to be used for follow-up testing in clinical practise. Furthermore, there is a need to improve the workplace safety culture for electricians in order to improve the numbers of follow-ups.

sted, utgiver, år, opplag, sider
Örebro: Örebro University, 2016. s. 58
Emneord
Electrical accident, Neurosensory symptoms, No-let-go phenomenon, Pain, Voltage, Quantitative Sensory Testing
HSV kategori
Identifikatorer
urn:nbn:se:oru:diva-50982 (URN)
Presentation
2016-06-14, Campus USÖ, Örebro universitet, hörsal C1, Södra Grev Rosengatan, Örebro, 09:00 (svensk)
Opponent
Veileder
Tilgjengelig fra: 2016-06-21 Laget: 2016-06-21 Sist oppdatert: 2019-03-22bibliografisk kontrollert
2. Effects of electrical accidents: occupational and health perspectives
Åpne denne publikasjonen i ny fane eller vindu >>Effects of electrical accidents: occupational and health perspectives
2022 (engelsk)Doktoravhandling, med artikler (Annet vitenskapelig)
Abstract [en]

Professionals working in the electrical industry are at risk of accidental injuries caused by electricity. Electrical accidents can cause persistent neurological symptoms, previously mainly described in patients whose injuries were initially extensive. The overall aim of this thesis was to study the prevalence of persisting, self-reported symptoms after electrical accidents and to explore their relationship to results obtained using clinical methods that are commonly used to study nerve function and hand-arm function. Another aim was to increase knowledge about the work situation and the safety culture of Swedish electricians and to describe the frequency with which electricians seek health care after electrical accidents. Study I was a retrospective survey of 523 Swedish male electricians. In study II, the electricians who reported persistent symptoms were further invited to undergo clinical examinations that included quantitative sensory testing (QST), assessment of fine motor skills and tactile gnosis. The most common self-reported symptoms were pain, reduced sensation and reduced muscle function. For a few, these symptoms persisted at the time of survey. Roughly half of the group exhibited abnormal warm and cold perception thresholds and tactile gnosis test values. Study III included 24 participants with persisting self-reported sensory symptoms, 1-5 years after an accident. Observations of nerve function; QST, laserevoked potentials (LEP) and nerve conductions studies, were performed. At least one neurosensory impairment was present- in at least one of the tests in 67% of the participants. The participants in study III were also evaluated in study IV, in which a control group of 24 healthy persons was added. Hand function was affected in many participants assessed with the Disabilities of the Arm, Shoulder and Hand (DASH) questionnaire as was tactil gnosis and manual dexterity, for the participants in the case group. Only a quarter of the participants in study I sought health care after their accidents, and the safety culture questionnaire revealed deficiencies, particularly in the reporting culture. The conclusions of this thesis are that self-reported neurosensory symptoms can persist for years after an electrical accident and that these symptoms can be evaluated using standard neurophysiological and functional tests that reflect changes in nerve function. Accordingly, hand function, examined using both objective and subjective measures, may be affected after work-related electrical accidents. This thesis highlights some aspects of safety culture and the work situations of professionals within the electrical industry. These areas need to be improved so that reporting routines provide opportunities to learn from and prevent accidents.

sted, utgiver, år, opplag, sider
Örebro: Örebro University, 2022. s. 95
Serie
Örebro Studies in Medicine, ISSN 1652-4063 ; 274
Emneord
Electrical accident, Neurosensory symptoms, No-let-go phenomenon, Pain, Voltage, Quantitative sensory testing
HSV kategori
Identifikatorer
urn:nbn:se:oru:diva-100921 (URN)9789175294766 (ISBN)
Disputas
2022-12-09, Örebro universitet, Campus USÖ, hörsal C1, Södra Grev Rosengatan 32, Örebro, 09:00 (svensk)
Opponent
Veileder
Tilgjengelig fra: 2022-08-29 Laget: 2022-08-29 Sist oppdatert: 2022-11-21bibliografisk kontrollert

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