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Epidemiological investigation on 2 133 hospitalized patients with electrical burns.

Abstract Objective: To analyze the epidemiological characteristics of the hospitalized patients with electrical burns in Institute of Burns of Tongren Hospital of Wuhan University & Wuhan Third Hospital (hereinafter referred to as Institute of Burns of Wuhan Third Hospital), so as to provide reference for the prevention and treatment of electrical burns. Methods: Medical records of all hospitalized burn patients in Institute of Burns of Wuhan Third Hospital from January 2004 to December 2016 were collected. Genders, ages, social categories, seasons of injury, total burn areas, depths of wounds, electrical voltages of injury, sites of wound, treatment methods, amputation rates, lengths of hospital stay, operation costs, hospitalization costs, and treatment outcomes of the electrical burn patients were collected. Treatment methods, lengths of hospital stay, operation costs, and hospitalization costs of the thermal burn patients were collected and compared with those of the electrical burn patients. Electrical voltages of injury, amputation rates, operation costs, hospitalization costs, and treatment outcomes were compared and analyzed between the electrical contact burn patients and the electrical arc burn patients. Data were processed with Chi-square test and Wilcoxon rank-sum test. Results: During the 13 years, 23 534 burn patients were admitted to Institute of Burns of Wuhan Third Hospital, among whom 2 133 (9.1%) were with electrical burns, without obvious variation in admission number of electrical burn patients every year. There were 1 418 patients (66.5%) with electrical contact burns and 715 patients (33.5%) with electrical arc burns. The ratio of male to female was 11.2∶1.0 among the electrical burn patients with known genders. The proportions of three age groups of more than 20 years old and less than or equal to 30 years old, more than 30 years old and less than or equal to 40 years old, and more than 40 years old and less than or equal to 50 years old were relatively higher, which were 18.3% (391/2 133), 22.1% (471/2 133), and 24.6% (525/2 133), respectively. The first three social category groups in proportions were workers, peasants, and preschool children, which were 57.9% (1 235/2 133), 14.6% (311/2 133), and 6.0% (128/2 133), respectively. Among the electrical burn patients with known seasons of injury, most cases were injured in summer (659 cases, accounting for 34.1%), obviously more than the proportions in autumn (537 cases, accounting for 27.8%), spring (455 cases, accounting for 23.5%), and winter (283 cases, accounting for 14.6%), with χ(2) values from 8.414 to 149.573, P values below 0.01. The group of patients with total burn areas less than 10% total body surface area (TBSA) occupied the highest proportion (1 603 cases, accounting for 75.15%), among whom 229 (10.74%) were with scattered small wounds which were less than 1% TBSA. The percentage of electrical contact burn patients with deep wounds was 79.1% (1 122/1 418), which was obviously higher than 2.5% (18/715) of the electrical arc burn patients (χ(2)=381.741, P<0.001). Among the patients with known electrical voltages of injury, patients injured by high voltage among the electrical contact burn patients accounted for 78.4% (469/598), which was obviously higher than 8.7% (11/127) of the electrical arc burn patients (χ(2)=227.893, P<0.001). The most common wound site of the electrical burn patients was upper limbs (1 650 cases, accounting for 63.2%), followed by lower limbs (382 cases, accounting for 14.6%), head and neck (292 cases, accounting for 11.2%), trunk (247 cases, accounting for 9.5%), and hip and perineum (40 cases, accounting for 1.5%). The operation rate of electrical burn patients was 32.4% (691/2 133), obviously higher than 19.1% (3 860/20 209)of the thermal burn patients during the same period (χ(2)=210.255, P<0.001). Wounds of 116 electrical contact burn patients were repaired with free flap by vascular anastomosis, of which 9 (7.8%) failed. The length of hospital stay, the operation cost, and the hospitalization cost of electrical burn patients were (28±29) d, (9 534±16 935) and (44 258±93 012) Yuan, respectively, obviously longer or higher than those of the thermal burn patients during the same period [(17±19) d, (2 990±8 916) and (23 291±88 340) Yuan, respectively, with Z values from -21.323 to -10.996, P values below 0.001]. The amputation rate and the death rate of electrical burn patients were 3.8% (82/2 133) and 0.8% (16/2 133) respectively. Compared with those of electrical arc burn patients, the amputation rate and the operation cost of electrical contact burn patients were obviously higher (χ(2)=36.970, Z=-11.351, P values below 0.001), and the length of hospital stay of electrical contact burn patients was obviously longer (Z=-5.181, P<0.001). There were no significant differences in hospitalization cost and treatment outcome between the electrical contact burn patients and the electrical arc burn patients (Z=-1.461, χ(2)=1.673, P values above 0.05). Conclusions: The number and the proportion of hospitalized electrical burn patients in Institute of Burns of Wuhan Third Hospital were relatively high, indicating a hard task of prevention for electrical burns in Wuhan area. Working-age workers and farmers, and preschool children were the key groups in prevention from electrical burns. The length of hospital stay, the operation cost, and the hospitalization cost of electrical burn patients were obviously higher than those of thermal burn patients. The amputation rate and the operation cost of electrical contact burn patients were obviously higher than those of electrical arc burn patients, but there were no obvious differences in hospitalization cost or treatment outcome between them. Actively using tissue flaps including free flap to repair of wounds may be helpful to reduce the amputation rate, improve the results, and shorten the time of treatment.
PMID
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Authors

Mayor MeshTerms

Length of Stay

Keywords

Burns, electric

Epidemiology

Hospitalization

Journal Title zhonghua shao shang za zhi = zhonghua shaoshang zazhi = chinese journal of burns
Publication Year Start




PMID- 29275613
OWN - NLM
STAT- MEDLINE
DCOM- 20180105
LR  - 20180105
IS  - 1009-2587 (Print)
IS  - 1009-2587 (Linking)
VI  - 33
IP  - 12
DP  - 2017 Dec 20
TI  - [Epidemiological investigation on 2 133 hospitalized patients with electrical
      burns].
PG  - 732-737
LID - 10.3760/cma.j.issn.1009-2587.2017.12.003 [doi]
AB  - Objective: To analyze the epidemiological characteristics of the hospitalized
      patients with electrical burns in Institute of Burns of Tongren Hospital of Wuhan
      University &amp; Wuhan Third Hospital (hereinafter referred to as Institute of Burns 
      of Wuhan Third Hospital), so as to provide reference for the prevention and
      treatment of electrical burns. Methods: Medical records of all hospitalized burn 
      patients in Institute of Burns of Wuhan Third Hospital from January 2004 to
      December 2016 were collected. Genders, ages, social categories, seasons of
      injury, total burn areas, depths of wounds, electrical voltages of injury, sites 
      of wound, treatment methods, amputation rates, lengths of hospital stay,
      operation costs, hospitalization costs, and treatment outcomes of the electrical 
      burn patients were collected. Treatment methods, lengths of hospital stay,
      operation costs, and hospitalization costs of the thermal burn patients were
      collected and compared with those of the electrical burn patients. Electrical
      voltages of injury, amputation rates, operation costs, hospitalization costs, and
      treatment outcomes were compared and analyzed between the electrical contact burn
      patients and the electrical arc burn patients. Data were processed with
      Chi-square test and Wilcoxon rank-sum test. Results: During the 13 years, 23 534 
      burn patients were admitted to Institute of Burns of Wuhan Third Hospital, among 
      whom 2 133 (9.1%) were with electrical burns, without obvious variation in
      admission number of electrical burn patients every year. There were 1 418
      patients (66.5%) with electrical contact burns and 715 patients (33.5%) with
      electrical arc burns. The ratio of male to female was 11.2ratio1.0 among the
      electrical burn patients with known genders. The proportions of three age groups 
      of more than 20 years old and less than or equal to 30 years old, more than 30
      years old and less than or equal to 40 years old, and more than 40 years old and 
      less than or equal to 50 years old were relatively higher, which were 18.3%
      (391/2 133), 22.1% (471/2 133), and 24.6% (525/2 133), respectively. The first
      three social category groups in proportions were workers, peasants, and preschool
      children, which were 57.9% (1 235/2 133), 14.6% (311/2 133), and 6.0% (128/2
      133), respectively. Among the electrical burn patients with known seasons of
      injury, most cases were injured in summer (659 cases, accounting for 34.1%),
      obviously more than the proportions in autumn (537 cases, accounting for 27.8%), 
      spring (455 cases, accounting for 23.5%), and winter (283 cases, accounting for
      14.6%), with chi(2) values from 8.414 to 149.573, P values below 0.01. The group 
      of patients with total burn areas less than 10% total body surface area (TBSA)
      occupied the highest proportion (1 603 cases, accounting for 75.15%), among whom 
      229 (10.74%) were with scattered small wounds which were less than 1% TBSA. The
      percentage of electrical contact burn patients with deep wounds was 79.1% (1
      122/1 418), which was obviously higher than 2.5% (18/715) of the electrical arc
      burn patients (chi(2)=381.741, P&lt;0.001). Among the patients with known electrical
      voltages of injury, patients injured by high voltage among the electrical contact
      burn patients accounted for 78.4% (469/598), which was obviously higher than 8.7%
      (11/127) of the electrical arc burn patients (chi(2)=227.893, P&lt;0.001). The most 
      common wound site of the electrical burn patients was upper limbs (1 650 cases,
      accounting for 63.2%), followed by lower limbs (382 cases, accounting for 14.6%),
      head and neck (292 cases, accounting for 11.2%), trunk (247 cases, accounting for
      9.5%), and hip and perineum (40 cases, accounting for 1.5%). The operation rate
      of electrical burn patients was 32.4% (691/2 133), obviously higher than 19.1% (3
      860/20 209)of the thermal burn patients during the same period (chi(2)=210.255,
      P&lt;0.001). Wounds of 116 electrical contact burn patients were repaired with free 
      flap by vascular anastomosis, of which 9 (7.8%) failed. The length of hospital
      stay, the operation cost, and the hospitalization cost of electrical burn
      patients were (28+/-29) d, (9 534+/-16 935) and (44 258+/-93 012) Yuan,
      respectively, obviously longer or higher than those of the thermal burn patients 
      during the same period [(17+/-19) d, (2 990+/-8 916) and (23 291+/-88 340) Yuan, 
      respectively, with Z values from -21.323 to -10.996, P values below 0.001]. The
      amputation rate and the death rate of electrical burn patients were 3.8% (82/2
      133) and 0.8% (16/2 133) respectively. Compared with those of electrical arc burn
      patients, the amputation rate and the operation cost of electrical contact burn
      patients were obviously higher (chi(2)=36.970, Z=-11.351, P values below 0.001), 
      and the length of hospital stay of electrical contact burn patients was obviously
      longer (Z=-5.181, P&lt;0.001). There were no significant differences in
      hospitalization cost and treatment outcome between the electrical contact burn
      patients and the electrical arc burn patients (Z=-1.461, chi(2)=1.673, P values
      above 0.05). Conclusions: The number and the proportion of hospitalized
      electrical burn patients in Institute of Burns of Wuhan Third Hospital were
      relatively high, indicating a hard task of prevention for electrical burns in
      Wuhan area. Working-age workers and farmers, and preschool children were the key 
      groups in prevention from electrical burns. The length of hospital stay, the
      operation cost, and the hospitalization cost of electrical burn patients were
      obviously higher than those of thermal burn patients. The amputation rate and the
      operation cost of electrical contact burn patients were obviously higher than
      those of electrical arc burn patients, but there were no obvious differences in
      hospitalization cost or treatment outcome between them. Actively using tissue
      flaps including free flap to repair of wounds may be helpful to reduce the
      amputation rate, improve the results, and shorten the time of treatment.
FAU - Jiang, M J
AU  - Jiang MJ
AD  - Department of General Surgery, Zhongnan Hospital of Wuhan University, Wuhan
      430071, China.
FAU - Li, Z
AU  - Li Z
FAU - Xie, W G
AU  - Xie WG
LA  - chi
PT  - Journal Article
PL  - China
TA  - Zhonghua Shao Shang Za Zhi
JT  - Zhonghua shao shang za zhi = Zhonghua shaoshang zazhi = Chinese journal of burns
JID - 100959418
SB  - IM
MH  - Amputation
MH  - Burns, Electric/*epidemiology/therapy
MH  - Child, Preschool
MH  - Female
MH  - Free Tissue Flaps
MH  - Hospitalization
MH  - Humans
MH  - *Length of Stay
MH  - Lower Extremity
MH  - Male
MH  - Treatment Outcome
OTO - NOTNLM
OT  - Burns, electric
OT  - Epidemiology
OT  - Hospitalization
EDAT- 2017/12/26 06:00
MHDA- 2018/01/06 06:00
CRDT- 2017/12/26 06:00
PHST- 2017/12/26 06:00 [entrez]
PHST- 2017/12/26 06:00 [pubmed]
PHST- 2018/01/06 06:00 [medline]
PST - ppublish
SO  - Zhonghua Shao Shang Za Zhi. 2017 Dec 20;33(12):732-737.