1 Mario Gašić 1 Harolt Placento 1 Zvjezdana Gvozdanović ² Marijana Neuberg 3 Mario Djuran 1 Kristina Tičić 1 GH Našice ² University North 3 GH Varaždin Article received: 13.04.2017. Article accepted: 06.09.2017. Author for correspondence: Mario Gašić, Bana Josipa Jelačića 10, 31500 Našice, magasic@unin.hr DOI: 10.24141/2/1/1/7 Keywords: emergency departments, plaster splint, educa- tion, complications Abstract Aim: 1. To determine the frequency of complications in patients treated with plaster splint at emergency departments. 2. To determine the existence of cor- relation of complications in patients treated with a plaster splint at emergency departments with prior work experience in surgical plaster rooms. Hypothesis: Frequency of complications in patients treated with plaster splints at emergency depart- ments whose immobilization is performed by nurses with prior work experience in surgical plaster rooms is lower than in patients whose immobilization is per- formed by nurses educated for the needs of plaster- ing at emergency departments. Materials and methods: Research - April and May 2015, at Našice General Hospital, University Hospital Centre Osijek, Čakovec County Hospital and Dr. Tomis- lav Bardek Koprivnica General Hospital. Sample - 153 patients and 34 nurses. Research instruments - two anonymous questionnaires created for the purposes of research. Descriptive and nonparametric statistical data analysis has been applied with α = 0.05 level of signifcance. Results: pressure sores of diferent intensity are pre- sent in 8.9% of the second group respondents. This complication is not present in the frst group. Plas- ter splints in the frst group are adequate in 86.7% of cases, while they are not adequate in 59% of the cases in the second group. Conclusion: The hypothesis has been confrmed. Incidence of Complications in Patients Treated with Plaster Splints in Emergency Departments in Four Hospitals Croat Nurs J. 2017; 1(1): 79-90