Murat Pekdemir1, Can Duman2, Serkan Yılmaz1

1Kocaeli Üniversitesi Tıp Fakültesi, Acil Tıp Anabilim Dalı,kocaeli
2Kocaeli Üniversitesi Tıp Fakültesi, Biyokimya Ve Klinik Biyokimya Anabilim Dalı,kocaeli

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<0.001 for all parameters). There was no significant difference between CT and Uri (p=0.218 and p=0.934 respectively). Evaluating the affects of NPTS and working hour on TT, significantly difference for CBC in day time and for CBC, EBT and Sed during the out of day time were revealed between the period 1 and 2. ‹letiflim (Correspondence) Dr. Murat PEKDEM‹R Affect of negative pressure tube system on laboratory turnaround time of emergency department patients
Conclusion: NPTS significantly reduced TT of CBC, Sed, and EBT in the emergency department. Studies focused on the factors improving TTs other than NPTS may facilitate the emergency care.