Worker safety perception analysis of South Korean construction sites.

Purpose. The aim of this article was to measure the safety perception level of workers on a South Korean construction site and investigate safety problems using the Nordic occupational safety climate questionnaire (NOSACQ-50). Methods. The survey was carried out via the NOSACQ-50 with 175 workers from five South Korean construction companies to evaluate their perception level. The results were then compared with the NOSACQ-50 criteria. Results. The safety perception of this South Korean construction site is high when compared with the NOSACQ-50 criteria. This high level was especially pronounced for the seventh dimension of the efficacy of the safety system, which showed the highest level among all dimensions. In addition, we suggested improvements and interventions to sustain a safety climate amongst workgroups. Conclusions. This study confirms that the seventh dimension showed the highest safety perception amongst all dimensions in South Korea. In the future, these findings can be utilized to develop an evaluation tool for the safety climate of the construction industry in South Korea.

A case of a duodenal duplication cyst presenting as melena.

Duodenal duplication cysts are benign rare congenital anomalies reported mainly in the pediatric population, but seldom in adults. Symptoms depend on the type and location and can present as abdominal pain, distension, dysphagia or dyspepsia. They have been reported to be responsible for duodenal obstruction, pancreatitis and, in rare cases, gastrointestinal bleeding. We present a case of a duodenal duplication cyst in a 43-year-old man presenting as melena. Initial gastroduodenoscopy and colonoscopy did not reveal any bleeding focus. However, the patient began passing melena after 3 d, with an acute decrease in hemoglobin levels. Subsequent studies revealed a duplication cyst in the second portion of the duodenum which was surgically resected. Histology revealed a duodenal duplication cyst consisting of intestinal mucosa. There was no further bleeding and the patient recovered completely. In rare cases, duodenal duplication cysts might cause gastrointestinal bleeding and should be included in the differential diagnosis.