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Affect of negative pressure tube system on laboratory turnaround time of emergency department patients

Author(s): Murat PEKDEMÄ°R | Can DUMAN | Serkan YILMAZ

Journal: Turkish Journal of Emergency Medicine
ISSN 1304-7361

Volume: 8;
Issue: 1;
Start page: 13;
Date: 2008;

Keywords: Emergency department | negative pressure tube system | turnaround time.

Objectives: Laboratory tests demanded in an emergency department (ED) go through several steps including transport of the samples, assessment and announcement of the results. Negative pressure tube system (NPTS) is an alternative method for transporting samples. The aim of this study is to investigate the affects of NPTS and working hours on turnaround time (TT). Materials and Methods: The TT of the laboratory tests that were one week before (period 1) and after (period 2) the initiation of the system were gathered from the hospital and laboratory databases. The TTs of complete blood count (CBC), sedimentation (Sed), emergency biochemical tests (EBT), coagulation tests (CT) and urine analysis (Uri) were analyzed. Results: Three hundred and fifty five samples were included in the study. Of these 355 patients, 164 patients were in period 1 (46.2%), and 191 (53.8%) in period 2. During the first period, TT for CBC, Sed, EBT, CT and Uri were 58 (4-311), 91.5 (41-228), 80 (24-259), 54.5 (19-191) and 66 (15-266) minutes, respectively. During the second period, the TT for the same tests were 33 (2-222), 54 (11-222), 64 (24-370), 58 (22-280) and 70.5 (10-357) minutes, respectively. Among these parameters, the TTs of CBC, Sed and EBT were significantly different between two periods (p
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