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Comparison of RULA and Checklist OCRA Ergonomic Risk Methods for Civil Construction
Juliano Prado Stradioto,Ariel Orlei Michaloski,Antonio Augusto de Paula Xavie,Daniela Colombini 대한산업공학회 2020 Industrial Engineeering & Management Systems Vol.19 No.4
The external plastering has a high rate of work accidents and corresponds to a large part of work-related musculoskeletal disorders (WMSD) in construction. The objective of this research was to statistically correlate the RULA and OCRA Checklist ergonomic risk methods, used in external workstations on building facades. The methodological approach consisted of a quantitative and qualitative research, including literature review and field research, including 32 employees, with the project approved by the Institution’s Ethics and Research Committee. This research showed results that indicate the high physical requirements that the activity exerts on workers, a strong and significant statistical correlation between the methods, and that the OCRA checklist method is the best option among those for the ergonomic evaluation. The research showed limitations regarding the amount of ergonomic methods used as well as the difficult access to construction sites. The research leaves the possibility of future studies on the statistical comparison between other ergonomic methods, using a greater number of statistical tools, in addition to analyzing other activities that make up the execution of building work in civil construction.
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Safety of Nonoperative Management After Acute Diverticulitis
Javier Suarez Alecha,Sonia Amoza Pais,Xavi Batlle Marin,Begoña Oronoz Martinez,Enrique Balen Ribera,Concepción Yarnoz Irazabal 대한대장항문학회 2014 Annals of Coloproctolgy Vol.30 No.5
Purpose: The role of surgery in the management of diverticular disease after an episode of acute diverticulitis (AD) managed in a conservative form is evolving. Age, number of episodes of AD, type of episode, and symptoms after the episodes are factors related to the need for elective surgery. The aim of this study is to evaluate the safety of conservative management and the risk factors for emergency surgery after a first episode of AD managed without surgery. Methods: We retrospectively evaluated 405 patients diagnosed as having had a first episode of AD. Sixty-nine patients underwent emergency surgery on the first admission, and 69 patients had an elective operation in the follow-up (group A). The remaining 267 patients were managed initially without surgery (group B). Thirteen of these 267 patients needed a further urgent surgical procedure. Factors involved in the decision of elective surgery and the probability of emergency surgery after the first episode of AD managed without surgery were evaluated in relation to demographic factors, risk factors, presence of recurrences, and type of the first episode. Results: Patients, mean age was 62.7 years, 71 were aged less than 51, and 151 were males. The mean follow-up for patients with nonoperative management was 91.2 months. An elective operation was performed in 69 patients. Compared to patients in group B, those in group A more frequently had a first episode of complicated acute diverticulitis (CAD) (37.1% vs. 16.4%; P = 0.000) and were more likely to be smokers (46.3% vs. 19.3%; P = 0.000) and to suffer more than one episode of AD (42% vs. 26.9%; P = 0.027). Nonoperative management was chosen for 267 patients, but 13 patients needed an emergency operation later. In the multivariate analysis, we found a significant relation between the presence of CAD in the first episode and the need for emergency surgery. There were no differences in surgical mortality between the patients in the two groups, but patients treated with elective surgery had a higher rate of stoma than patients treated non-operatively (7.2% vs. 1.4%; P = 0.028); this difference was not observed in the subgroup of patients with CAD (15.3% vs. 6.8%; P = 0.458). Conclusion: After an episode of AD, nonoperative management is safe because fewer than 5% of patients will need an emergent procedure in a subsequent attack of AD. A first episode of CAD is the only risk factor for emergency surgery in patients managed conservatively.
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