Emergency. 2016; 4 (4): 207-210 BR I E F RE P O RT The Reasons of Renal Transplant Recipients’ Admission to the Emergency Department; a Case Series Study Erdal Uysal1∗, Mehmet Dokur2, Hasan Bakir1, Mehmet Ali Ikidag3, Turkay Kirdak4, Hatem Kazimoglu5 1. Department of General Surgery, Sanko University School of Medicine, Gaziantep, Turkey. 2. Department of Emergency, Sanko University School of Medicine, Gaziantep, Turkey. 3. Department of Radiology, Sanko University Hospital, Gaziantep, Turkey. 4. Department of General Surgery, Uludag Universtiy School of Medicine, Bursa, Turkey. 5. Department of Urology, Sanko University School of Medicine, Gaziantep, Turkey. Received: December 2015; Accepted: February 2016 Abstract: Introduction: Renal transplantation are admitted to emergency department (ED) more than normal popula- tion. The present brief report aimed to determine the reasons of renal transplant patient’s ED visits. Methods: This retrospective case series study analyzed the reasons of renal transplant recipients admission to one ED be- tween 2011 and 2014. The patient data were collected via a checklist and presented using descriptive statistics tools. Results: 41 patients with the mean age of 40.63 ± 10.95 years were studied (60.9% male). The most com- mon ED presenting complaints were fever (36.6%) and abdominal pain (26.8%). Infections were the most com- mon final diagnosis (68.3%). Among non-infectious causes, the most common was acute renal failure (9.7%). 73.2% of the patients were hospitalized and no cases of graft loss and mortality were seen. Conclusion: The most common reason for ED admission was fever, and infections were the most common diagnosis. Acute gas- troenteritis being the most frequent infection and among non-infectious problems, acute renal failure was the most frequent one. Keywords: Kidney transplantation; patient readmission; emergency service, hospital; epidemiologic studies © Copyright (2016) Shahid Beheshti University of Medical Sciences Cite this article as: Uysal E, Dokur M, Bakir H, Ikidag MA, Kirdak T, Kazimoglu H. The Reasons of Renal Transplant Recipients Admission to the Emergency Department; a Case Series Study. Emergency. 2016; 4 (4): 207-210. 1. Introduction Since the introduction of highly effective immunosuppres- sive agents, organ transplant patients survive significantly longer and the number of patients with successful kidney transplantation is increasing worldwide. However, immuno- suppressive therapies raise other distinct health problems that necessitate such patients visiting emergency depart- ments (ED) with a variety of presentations. They are admit- ted to EDs more frequently and with more complex issues (1). Lack of sufficient knowledge and experience of approach to renal transplant recipients in ED poses a major problem in management of these patients (2). Emergency physicians ∗Corresponding Author: Erdal Uysal; Sanko University School of Medicine, Department of General Surgery Incilipinar Mah Ali Fuat Cebesoy Bulv. No: 45 27090, Sehitkamil - Gaziantep, Turkey. Phone: 00903422115000, Fax: 0090 3422115010 Email:drerdaluysal@hotmail.com should be familiarized with major complications and ways to manage the emergent problems of the mentioned pa- tients (2). They may admit to ED for issues either related or not related to renal transplantation including acute rejection episodes, infections, cardiovascular diseases, side effects of immunosuppressive drugs, and the problems of renal trans- plant surgery (1-3). It is important to distinguish transplan- tation related issues due to their vital importance in protec- tion of graft. Surprisingly, there are very few studies on the subject, most of which emphasize the importance of infec- tions in renal, liver and heart/lung transplant recipients (2, 4, 5). In a study, the causes of renal transplant patients death were found to be infections with 69.6%, cardiovascular dis- eases with 12.7% and acute rejection with 6.9%, respectively (6). Based on the above-mentioned, the aim of the present brief report is to determine the reasons of renal transplant patient’s ED visits and highlight the importance of prepared- ness for dealing with them. This open-access article distributed under the terms of the Creative Commons Attribution NonCommercial 3.0 License (CC BY-NC 3.0). Downloaded from: www.jemerg.com E. Uysal et al. 208 2. Methods This retrospective case series study analyzed the reasons of renal transplant recipient’s admission to the ED of Sanko University Hospital, Gaziantep, Turkey. 41 patients, who underwent renal transplantation between 2011 and 2014 were enrolled. The patient data were collected from clinical files and electronic medical records via filling out the initially prepared checklist including demographic characteristics (age, sex), ED presenting complaints, number of ED ad- missions, donor type, consulting services, as well as patient disposition and final diagnosis and outcome (mortality, graft loss). The data were entered to a pre-designed database and analyzed with SPSS 13.0 statistical software. Data are presented as mean ± standard deviation or frequency and percentage. The researchers adhered to the principles of Helsinki Declaration and research ethics and kept patient information confidential. 3. Results 160 renal transplants were performed during the study pe- riod in the studied center. Among which, 41(26%) patients with the mean age of 40.63 ± 10.95 years visited the ED at least once (60.9% male). The range of time interval between renal transplantation to ED admission was 1-36 months. The mean duration of ED stay was 2.1 ± 0.69 (1.2 - 3.4) hours. Table 1 presents the characteristics of studied patients. The most common ED presenting complaint was fever, followed by abdominal pain, nausea and vomiting. Table 2 summa- rizes the final diagnosis of studied patients based on infec- tious and non-infectious causes. Infections were the most common final diagnosis (28 (68.3%) patients) and the most common infection was acute gastroenteritis detected in 11 (26.8%) patients. Among non-infectious causes, the most common was acute renal failure observed in 4 (9.7%) pa- tients. The mean time interval between ED presentation and disposition was 1.9 ± 0.46 (1.1 - 2.3) hours and 73.2% (30) of the patients were hospitalized. No cases of graft loss and mortality were seen. 4. Discussion In this retrospective case series, 26% of renal transplant recipients of the hospital visited the ED during 3 years. The most common reason for ED admission was fever, and infections were the most common diagnosis. Acute gastroenteritis being the most frequent infection and among non-infectious problems, acute renal failure was the most frequent one. Infections are among the usual complica- tions of immunosuppressive therapy (7). Previous studies Table 1: Characteristics of studied patients Characteristics Number (%) Gender Male 25 (61.0) Female 16 (39.0) Number of ED admissions 1 22 (53.7) 2 11 (26.8) 3 8 (19.5) Disposition Discharge from ED 11 (26.8) Hospitalization 30 (73.2) Donor type Cadaveric 21 (51.2) Living 20 (48.8) ED presenting complaint Fever 15 (36.6) Abdominal pain 11 (26.8) Nausea and vomiting 9 (21.9) Diarrhea 6 (14.6) Headache 4 (9.8) Dyspnea 3 (7.3) Hematuria and dysuria 3 (7.3) Low back pain 2 (4.9) Extremity pain 2 (4.9) Palpitation 1 (2.4) Hypertension 1 (2.4) Consultation Nephrology 29 (70.7) Infectious diseases 13 (31.7) Transplant surgeon 6 (14.6) Orthopedics 2 (4.9) Cardiology 1 (2.4) ED: emergency department. Table 2: Final diagnosis of studied patients Diagnosis Number (%) Infectious Acute Gastroenteritis 11 (26.8) Upper respiratory tract infection 9 (21.9) Urinary tract infection 4 (9.7) Pneumonia 2 (4.8 ) Herpes infection 1 (2.4) Soft tissue infection ∗ 1 (2.4) Non-infectious Acute Renal Failure 4 ( 9.7) Acute graft rejection 3 (7.3) Acute cholecystitis∗ 2 (4.8) Wrist fractures∗ 2 (4.8) Cardiovascular disease ∗ 1 (2.4) Anxiety ∗ 1 (2.4) * Unrelated to transplantation. have declared infection as the most frequent cause of renal transplant patient’s ED visits (2, 3). The most common post-renal transplantation sources of infections are reported to be urinary tract, followed by muco-cutaneous and upper respiratory tract (2, 3, 8-10). However, in the present case This open-access article distributed under the terms of the Creative Commons Attribution NonCommercial 3.0 License (CC BY-NC 3.0). Downloaded from: www.jemerg.com 209 Emergency. 2016; 4 (4): 209-210 series gastroenteritis was the most frequent infection and about twice Tokalak et al. study (2). This may be due to dietary habits of our patients or quality of food and water they used. However, neither sepsis nor graft loss was devel- oped in any of these patients. Pneumonia was diagnosed in two patients, pneumococcal in one case and atypical in the other. Acute renal failure is a major risk factor of rejection among renal transplant recipients (11). In our study, 4 patients were diagnosed with acute renal failure, 2 of them were diagnosed with acute graft rejection and the other two with immunosuppressive drug toxicity. Acute graft rejections were successfully treated and the patient’s blood urea nitrogen and creatinine values reversed to normal and for the two intoxicated patients, immunosuppressive dose adjustment was made. No case of graft loss and mortality was seen. One of the most important causes of mortality in renal transplant patients is cardiovascular diseases (2)(12). The risk of cardiovascular disease in patients with renal transplantation has been reported to be 5 times higher than normal population (1). In this study, one patient presented with chest pain and palpitations, which was diagnosed as supraventricular tachycardia and treated in the coronary intensive care unit. Hospitalization rate of 73.1% in the present case series was high compared to previous studies (2, 13). The reason was the preference of studied center clinicians for inpatient management of renal transplant patients. This study has methodological restrictions, as it is a retrospective case-series with low sample size. In addition, some of the renal transplant patients of the hospital might have been admitted to the EDs of other hospitals and were missed. Despite the mentioned limitations, the findings of this study could be helpful in raising awareness regarding re- nal transplant complications among emergency physicians. 5. Conclusion The most common reason for ED admission was fever, and infections were the most common diagnosis. Acute gastroenteritis being the most frequent infection and among non-infectious problems, acute renal failure was the most frequent one. 6. Appendix 6.1. Acknowledgements The authors would like to thank Prof. Dr. M. Fatih Yuzba- sioglu for assisting in preparation of the manuscript. 6.2. Author’s contributions All authors passed four criteria for authorship contribution based on recommendations of the International Committee of Medical Journal Editors. 6.3. Conflict of interest None 6.4. Funding/ Support None References 1. Venkat KK, Venkat A. Care of the renal transplant recipi- ent in the emergency department. Annals of emergency medicine. 2004;44(4):330-41. 2. Tokalak I, Basaran O, Emiroglu R, Karakayali H, Bilgin N, Haberal M. Problems in postoperative renal trans- plant recipients who present to the emergency unit: experience at one center. Transplantation proceedings. 2004;36(1):184-6. 3. Kartal M GE, Eray O, Gungor F. Factors affecting to hospital admission for renal transplant patients in the emergency department. Turkish Journal of Emergency Medicine. 2009;9(4):159-62. 4. Sternbach GL, Varon J, Hunt SA. Emergency depart- ment presentation and care of heart and heart/lung transplant recipients. Annals of emergency medicine. 1992;21(9):1140-4. 5. Savitsky EA, Votey SR, Mebust DP, Schwartz E, Uner AB, McCain S. A descriptive analysis of 290 liver transplant patient visits to an emergency department. Academic emergency medicine : official journal of the Society for Academic Emergency Medicine. 2000;7(8):898-905. 6. Reis MA, Costa RS, Ferraz AS. Causes of death in re- nal transplant recipients: a study of 102 autopsies from 1968 to 1991. Journal of the Royal Society of Medicine. 1995;88(1):24-7. 7. Fishman JA, Rubin RH. Infection in organ-transplant recipients. The New England journal of medicine. 1998;338(24):1741-51. 8. Becker S, Witzke O, Rubben H, Kribben A. [Urinary tract infections after kidney transplantation: Essen algorithm for calculated antibiotic treatment]. Der Urologe Ausg A. 2011;50(1):53-6. 9. Trzeciak S, Sharer R, Piper D, Chan T, Kessler C, Dellinger RP, et al. Infections and severe sepsis in solid-organ transplant patients admitted from a university-based ED. The American journal of emergency medicine. 2004;22(7):530-3. This open-access article distributed under the terms of the Creative Commons Attribution NonCommercial 3.0 License (CC BY-NC 3.0). Downloaded from: www.jemerg.com E. Uysal et al. 210 10. Schmaldienst S, Dittrich E, Horl WH. Urinary tract infec- tions after renal transplantation. Current opinion in urol- ogy. 2002;12(2):125-30. 11. Koo EH, Jang HR, Lee JE, Park JB, Kim SJ, Kim DJ, et al. The impact of early and late acute rejection on graft sur- vival in renal transplantation. Kidney research and clini- cal practice. 2015;34(3):160-4. 12. Rigatto C. Clinical epidemiology of cardiac disease in renal transplant recipients. Seminars in dialysis. 2003;16(2):106-10. 13. Kim HC, Park SB. Infection in the renal transplant recipi- ent. Transplantation proceedings. 2000;32(7):1974-5. This open-access article distributed under the terms of the Creative Commons Attribution NonCommercial 3.0 License (CC BY-NC 3.0). Downloaded from: www.jemerg.com Introduction Methods Results Discussion Conclusion Appendix References