Elif Yaka
Kocaeli University
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Featured researches published by Elif Yaka.
Academic Emergency Medicine | 2015
Elif Yaka; Serkan Yılmaz; Nurettin Özgür Doğan; Murat Pekdemir
OBJECTIVES The aim of this study was to compare the performance of the Glasgow-Blatchford and the AIMS65 scoring systems as early risk assessment tools for accurately identifying patients with upper gastrointestinal (GI) bleeding who are at a low risk of requiring clinical interventions, including emergency endoscopy. The secondary objective was to compare their performance regarding relevant clinical outcomes. METHODS Data were collected prospectively over a 2-year period in the emergency department of a university hospital. Adult patients with upper GI bleeding from either variceal or nonvariceal sources were included. Composite clinical outcomes consisted of a need for surgical or endoscopic intervention, rebleeding, intensive care unit admission, or in-hospital mortality. Patients who required blood transfusions or suffered composite clinical outcomes were considered high-risk patients. Glasgow-Blatchford score (GBS) and AIMS65 score were calculated for each patient. The sensitivity and specificity of the scoring systems were calculated. The areas under the receiver-operating characteristic curve (AUC) of the scores were compared. RESULTS There were 254 patients in the study, of whom 163 (64.2%) were men. The median age was 61 years (interquartile range = 45 to 72 years). Among the patients, 211 (83.1%) underwent endoscopy, of whom 49 (19.3%) required endoscopic intervention to achieve hemostasis. Five (2%) patients required surgical intervention. Rebleeding was observed in 33 (13%) patients. A total of 143 (56.3%) patients received blood transfusions. A total of 152 (59.8%) were defined as high risk. Eighty-one (31.9%) experienced at least one component of the composite clinical outcomes, 18 (7.1%) of whom suffered in-hospital mortality. A GBS of 0 was observed in 16 patients (6.3%) in the study group. Two of these were high-risk patients. A total of 101 (39.8%) patients had AIMS65 scores of 0. Thirty-four of these were high-risk patients. A GBS of 0 had higher sensitivity than an AIMS65 score of 0 (98.68% vs. 77.6%). The negative predictive values of the GBS and AIMS65 of 0 were 87.5 and 66.3%, respectively. The GBS and AIMS65 were similar with regard to the composite outcome prediction, with AUCs of 0.795 (95% confidence interval [CI] = 0.74 to 0.843) and 0.746 (95% CI = 0.688 to 0.798), respectively (p = 0.137). The scores were also similar with respect to predicting in-hospital mortality (AUCs of 0.85 vs. 0.81; p = 0.342). The GBS was superior to the AIMS65 in identifying high-risk patients, with AUCs of 0.896 (95% CI = 0.85 to 0.93) and 0.771 (95% CI = 0.714 to 0.821; p < 0.001), respectively. The GBS was also more accurate than the AIM65 in predicting the need for blood transfusions (AUCs of 0.904 vs. 0.796; p < 0.001) and interventions (AUCs of 0.727 vs. 0.647; p = 0.05). CONCLUSIONS These results suggest that the GBS has superior sensitivity relative to the AIMS65 in identifying patients who were not likely to require interventions, including emergency endoscopy. Additional work to determine the use in real-time decision making may be warranted and helpful in providing guidance to clinicians.
Respiratory Care | 2013
Murat Pekdemir; Orhan Cinar; Serkan Yılmaz; Elif Yaka; Melih Yüksel
BACKGROUND: Measuring and monitoring end-tidal carbon dioxide (PETCO2) is an important aspect of caring for critically ill patients. The 2 methods used for PETCO2 measurement are the mainstream and sidestream methods. OBJECTIVE: To assess the agreement between PETCO2 measurements performed by mainstream and sidestream methods with the PaCO2 values. METHODS: This was a prospective observational study. A total of 114 subjects were enrolled in the study. PETCO2 measurements using mainstream and sidestream methods were performed simultaneously with the arterial blood sampling in subjects who were observed in the emergency department and required arterial blood gas analysis. Agreement between the PETCO2 measurements and the PaCO2 values obtained from arterial blood gas analysis were evaluated using the Bland-Altman method. RESULTS: Sixty subjects (52.6%) were female, and the mean age was 60.9 years (95% CI 58.3–63.6). The mean PaCO2 was 35.16 mm Hg (95% CI 33.81–36.51), the mainstream PETCO2 was 22.11 (95% CI 21.05–23.18), and the sidestream PETCO2 was 25.48 (95% CI 24.22–26.75). Bland-Altman analysis showed an average difference between mainstream PETCO2 and PaCO2 values of 13 mm Hg (95% limits of agreement −0.6 to 25.5) and moderate correlation (r = 0.55, P < .001). The average difference between the sidestream PETCO2 and PaCO2 values was 9.7 mm Hg (95% limits of agreement −5.4 to 24.7) and poor correlation (r = 0.41, P < .001). CONCLUSIONS: PETCO2 values obtained by mainstream and sidestream methods were found to be significantly lower than the PaCO2 values. There was essentially no agreement between the measurements obtained by 2 different methods and the PaCO2 values.
Academic Emergency Medicine | 2014
Ahmet Kama; Serkan Yılmaz; Elif Yaka; Erkan Dervisoglu; Nurettin Özgür Doğan; Emre Erimşah; Murat Pekdemir
BACKGROUND There is no evidence regarding the several short-term prophylaxis protocols for contrast-induced nephropathy (CIN) that may be most feasibly convenient in emergency settings. OBJECTIVES The purpose of this study was to compare the efficacies of short-term CIN prophylaxis protocols of normal saline, N-acetylcysteine (NAC) plus saline, and sodium bicarbonate plus saline in emergency department (ED) patients at moderate or high risk of CIN after receiving intravenous (IV) contrast agent. METHODS This single-center, randomized, nonblinded clinical trial was conducted in the ED with adult patients requiring contrast-enhanced computed tomography (CT). Patients with moderate to high risk of CIN according to the Mehran risk score, who consented to participate, were eligible. Patients with continuous renal replacement therapy or who reported contrast allergy were excluded. Enrolled patients were randomly assigned to receive 150 mg/kg NAC in 1000 mL of 0.9% sodium chloride (NaCl), 150 mEq of sodium bicarbonate in 1000 mL of 0.9% NaCl, or 1000 mL of IV saline infusion, all given at 350 mL/hr for 3 hours. All of the patients were administered less than 100 mL of nonionic, low-osmolality contrast agent. The primary outcome of CIN was defined as a 25% increase or a greater than 0.5 mg/dL increase in the serum creatinine level 48 to 72 hours later compared with the baseline measurement. RESULTS A total of 107 patients were randomized to NAC (n = 36), sodium bicarbonate (n = 36), and saline prophylaxis (n = 35). The mean age of the patients was 71 years (95% confidence interval [CI] = 65 to 77 years), and 58 (54.2%) were male. The groups were similar regarding baseline characteristics and nephropathy risks. Of the 16 (14.9%) patients who eventually developed CIN, seven (19.4%) were in the NAC plus saline group, four (11.1%) were in the sodium bicarbonate plus saline group, and five (14.2%) were in the saline group. There were no significant differences between the groups in terms of the prevention of CIN (p = 0.60). CONCLUSIONS None of the short-term protocols with normal saline, NAC, or sodium bicarbonate was superior in ED patients requiring contrast-enhanced CT who had a moderate or high risk of CIN.
Annals of Emergency Medicine | 2017
Nazire Avcu; Nurettin Özgür Doğan; Murat Pekdemir; Elif Yaka; Serkan Yılmaz; Cansu Alyeşil; Latif Erdem Akalın
Study objective: The study aims to evaluate the efficacy and safety of intranasal lidocaine administration for migraine treatment. Methods: This single‐center, double‐blind, randomized, controlled trial was conducted in a tertiary care emergency department. Included patients met the migraine criteria of the International Headache Society. Patients were randomized to intranasal lidocaine or saline solution; all participants received 10 mg of intravenous metoclopramide. Patient pain intensity was assessed with an 11‐point numeric rating scale score. The primary outcome measure was the change in pain scores at 15 minutes; secondary outcomes were changes in pain intensity after pain onset and need for rescue medication. Results: Patients (n=162) were randomized into 2 groups with similar baseline migraine characteristics and numeric rating scale scores. The median reduction in numeric rating scale score at 15 minutes was 3 (interquartile range [IQR] 2 to 5) for the lidocaine group and 2 (IQR 1 to 4) for the saline solution group (median difference=1.0; 95% confidence interval 0.1 to 2.1). The reduction in pain score at 30 minutes was 4 (IQR 3 to 7) for the lidocaine group and 5 (IQR 2 to 7) for the saline solution group (median difference=1.0; 95% confidence interval 0.1 to 2.1). Need for rescue medication did not differ between the groups, and local irritation was the most common adverse event in the lidocaine group. Conclusion: Although intranasal lidocaine was found no more efficacious than normal saline solution in our study, future studies should focus on patients who present earlier after headache onset.
Turkish journal of emergency medicine | 2016
Esra Keçe; Elif Yaka; Serkan Yılmaz; Nurettin Özgür Doğan; Cansu Alyeşil; Murat Pekdemir
Objectives Differentiating sepsis from other noninfectious causes of systemic inflammatory response syndrome (SIRS) in cancer patients is often challenging. Although lactate and procalcitonin have been studied extensively regarding sepsis management, little is known about their utility in cancer patients. This study aimed to compare the diagnostic and prognostic utility of lactate and procalcitonin for sepsis in cancer patients. Material and methods This prospective case-control study was conducted with adult cancer patients presenting to emergency department (ED) with at least two SIRS criteria. The infection status of each patient was determined retrospectively. Main diagnostic variables were calculated for diagnostic and prognostic utilities of lactate and procalcitonin. Results Among 86 patients, mean age was 61. Twenty-two (25.6%) were determined in the sepsis group. In the ROC analysis, a lactate value of 1 mmol/L predicted sepsis with 86.36% (95%CI: 65.1%–97.1%) sensitivity and 28.12% (95%CI: 17.6%–40.76%) specificity. A procalcitonin value of 0.8 ng/mL yielded a sensitivity of 63.64% (95%CI: 40.7%–82.8%) and 76.56% (95%CI: 63.4%–86.2%) specificity for differential diagnosis of sepsis in cancer patients. Lactate and procalcitonin showed similar abilities in differentiating sepsis from non-infective SIRS in cancer patients [AUROCs of 0.638 (95%CI:0.527–0.739) vs 0.637 (95%CI:0.527–0.738), respectively. p = 0.994]. They were also similar in predicting poor clinical outcome with AUROCs of 0.629 (95%CI:0.518–0.731) and 0.584 (95%CI: 0.473–0.69), respectively (p = 0.577). Conclusions The results of this study indicated that, none of the lactate and procalcitonin can be recommended alone to differentiate sepsis from non-infectious SIRS and to predict the poor clinical outcomes in adult cancer patients with SIRS in the ED.
Journal of Emergency Medicine | 2014
Elif Yaka; Murat Pekdemir; Ahmet Kama; Hasan Tahsin Sarisoy; Serkan Yılmaz
BACKGROUND Epidural hematoma (EDH) in children is a diagnostic challenge due to its nonspecific clinical presentation. Asymptomatic chronic epidural hematoma is a very rare entity. Reports of spontaneous decompression into the subgaleal spaces are limited with acute epidural hematomas in the literature. OBJECTIVE We report a child presenting with chronic epidural hematoma at 15 days after a head trauma. She remained asymptomatic, owing to spontaneous decompression via a skull fracture. We intend to remind emergency physicians to be alert about epidural hematomas in asymptomatic children in the presence of a history of, even minor and distant, trauma. CASE PRESENTATION An 8-year-old girl presented to the Emergency Department with a swelling in the right parietal region. She had fallen at the playground and struck her head on the ground 15 days prior. Computed tomography showed a mixed-density subacute-chronic parietal epidural hematoma with a linear fracture overlying it. There was no evidence of midline shift or ipsilateral ventricular compression. CONCLUSION An initially minimal but expanding EDH in a child can remain asymptomatic even in the later phases, owing to the spontaneous decompression through a skull fracture.
Turkish Journal of Medical Sciences | 2016
Melih Yüksel; Murat Pekdemir; Serkan Yılmaz; Elif Yaka; Aslı Gülfer Kartal
BACKGROUND/AIM Pulmonary embolism (PE) is a frequent health problem representing a diagnostic challenge with high mortality and morbidity rates. The aim of this study was to investigate the value of end-tidal carbon dioxide (ETCO2) and alveolar dead space fraction (ADSF) in the diagnosis of PE. MATERIALS AND METHODS ETCO2 levels of patients with suspected PE were measured with a noninvasive mainstream sensor. ADSF of patients was calculated and PaCO2 levels were also obtained. ROC curve analysis was used to determine diagnostic values of ETCO2 and ADSF for PE. RESULTS The study included 159 patients. The mean values for ETCO2 and ADSF were 16.27 (95% CI, 14.52-18.03) and 0.48 (95% CI, 0.43-0.539) in the PE group and 21.57 (95% CI, 20.52-22.639) and 0.35 (95% CI, 0.32-0.38) in the non-PE group. The area under the curve (AUC) and the cut-off point for ETCO2 were found as 0.751 and ≤19, with 83.8% sensitivity and 61.5% specificity. AUC and cut-off point for ADSF were found as 0.738 and >0.443, with 67.57% sensitivity and 73.77% specificity. CONCLUSION The diagnostic value of calculated ADSF and noninvasive bedside ETCO2 for PE was found to be low.
Emergency Medicine Australasia | 2015
M Emre Erimşah; Elif Yaka; Serkan Yılmaz; Ahmet Kama; Murat Pekdemir
In 2009, the Ministry of Health in Turkey mandated a three‐level emergency triage scale coded with the colours red, yellow and green in descending order of acuity. This study was conducted to assess the reliability and validity of this mandatory emergency triage instrument in Turkey.
Turkish journal of emergency medicine | 2012
Serkan Yılmaz; Murat Pekdemir; Elif Yaka
OZET Mesleki maruziyet gelismekte olan ulkelerde, ciddi ancak yeterince kayitlara gecirilememis bir sorundur. Siklikla nonspesifik semptomlarla basvuran bu hastalarin tani ve tedavisinde bircok gucluk yasanmaktadir. Bu makale, bir mesleki maruziyet vakasinin degerlendirmesi sirasinda elde edilen deneyimlerin paylasilmasi amaciyla hazirlanmistir. Plastik yer dosemeleri uretiminde calisan iki isci yuruyememe, uyusukluk ve bas donmesi, bilinc bulanikligi gibi yakinmalarla acil servise basvurdu. Her iki hastada da norolojik semptomlara yol acan toksik ensefalit ve direncli hipokalemiye yol acan renal meduller hasar dusunuldu. Gerek fabrikada kullanilan maddelere dair kayitlara ulasilamamasi ve fabrika yetkilerinden bilgi alinamamasi, gerekse hizli bir sekilde olay yeri toksikolojik degerlendirmesinin yapilmamasi nedeniyle etyolojiye kesin olarak karar verilemedi. Fabrikada cozucu olarak kullanilan toluenin klinik tablodan sorumlu olabilecegi dusunuldu. Şupheli kimyasal ajanlara maruz kalma nedeniyle basvuran hastalarin degerlendirilmesi sirasinda bircok gucluk yasanmaktadir. Sanayide kullanilan kimyasallar ile ilgili bilgilerin ulasilabilir olmasi, bu konuda ulusal bir veritabani hazirlanmasi, toksikolojik olay yeri degerlendirmesinin hizli ve etkin sekilde yapilmasi bu hastalarinin dogru degerlendirilebilmelerine yardimci olacaktir.
Hong Kong Journal of Emergency Medicine | 2018
Ali Işıkkent; Serkan Yılmaz; İbrahim Ulaş Özturan; Nurettin Özgür Doğan; Elif Yaka; Haldun Gültekin; Tuğba Kum; Murat Pekdemir
Background: Utilization of renal biomarkers such as neutrophil gelatinase-associated lipocalin in the management of acute kidney injury may be useful as a diagnostic tool in the emergency department. Objective: The aim of this study is to determine the relationship between serum neutrophil gelatinase-associated lipocalin level and the severity of the acute kidney injury based on the Risk, Injury, Failure, Loss of kidney function, and End-stage kidney disease (RIFLE) classification, and to investigate the role of the serum neutrophil gelatinase-associated lipocalin level in differentiating the etiology and predicting the 30-day mortality rate and need for dialysis. Methods: This prospective, observational study was conducted from March 2015 to 2016. Adult patients with acute kidney injury in the emergency department were enrolled in the study. Demographic and clinical features such as hypovolemic state, nephrotoxic substance exposure, renal functions, and serum neutrophil gelatinase-associated lipocalin level were evaluated. After the etiology of the acute kidney injury was ascertained, the severity of the acute kidney injury was determined according to RIFLE criteria. Primary outcome was defined as the correlation between serum neutrophil gelatinase-associated lipocalin level and the severity of the acute kidney injury according to RIFLE classification. Secondary outcomes were defined as the relationship between the serum neutrophil gelatinase-associated lipocalin level and the etiology of the acute kidney injury; need for dialysis and 30-day mortality were defined as poor outcomes. Results: A total of 87 patients were included in the study. Mean serum neutrophil gelatinase-associated lipocalin levels were 380.14 ± 276.65 ng/mL in RIFLE-R, 425.80 ± 278.99 ng/mL in RIFLE-I, and 403.60 ± 293.15 ng/mL in RIFLE-F groups. There was no statistically significant relationship between the severity of acute kidney injuries and serum neutrophil gelatinase-associated lipocalin level. Initial serum neutrophil gelatinase-associated lipocalin levels in the emergency department did not indicate a statistically significant ability to predict the etiology of acute kidney injury, 30-day mortality rates, or need for dialysis. Conclusion: Initial serum neutrophil gelatinase-associated lipocalin level in the emergency department is not a determinant tool for predicting the severity, etiology, 30-day mortality rates, or need for dialysis in cases of acute kidney injuries.