Tıp Fakültesi / Faculty of Medicine
Permanent URI for this collectionhttps://hdl.handle.net/11727/1403
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Item Re-Evaluation of Logistics Strategy During COVID-19 Pandemic Environment: Reduced Customer Service Commitment(2023) Kara, Ali; Spillan, John E.; Acikdilli, Gaye; Kirkbesoglu, Erdem; 0000-0002-6781-9753; ABI-3973-2020The Bowersox and Daugherty's (1987) typology has been tested in international markets, providing valuable insights into its relevance. However, the literature has yet to examine its effectiveness in business environments affected by pandemics. The purpose of this study is to empirically assess the resilience of the logistics strategy framework in an emerging market during the COVID-19 pandemic. To measure the three dimensions of the overall logistics strategy, as well as mediator variables such as logistics integration and customer service commitment, we collected 326 responses from logistics managers in Turkey. Using a structural equation model (SEM), we found that the three dimensions of the overall logistics strategy remained robust during the pandemic, thus supporting the durability of the Bowersox and Daugherty's (1987) framework. However, the customer service commitment was found to have a statistically insignificant role in mitigating the overall logistics strategy and the firm's competitive responsiveness.Item Evaluation of Inflammation-Based Prognostic Risk Scores in Predicting in-Hospital Mortality Risk in Hospitalized COVID-19 Patients: A Cross-Sectional Retrospective Study(2023) Celik, Casit Olgun; Ozer, Nurtac; Ciftci, Orcun; Torun, Serife; Yavuz Colak, Meric; Muderrisoglu, Ibrahim Haldun; 0000-0002-6530-6153; 0000-0002-7190-5443; 0000-0002-0294-6874; 38633908; ABF-1652-2021; AAD-5477-2021; AAA-4360-2021Objective: Systemic inflammatory parameters are predictors of poor prognosis in COVID-19 patients. This study evaluated whether the prognostic nutritional index, which was also related to nutrition risk and other inflammation-based prognostic scores, was predictive of in-hospital mortality in COVID-19 patients.Materials and Methods: This was a retrospective cross-sectional single-center study. Based on the exclusion criteria, 151 patients over 18 years old diagnosed with COVID-19 and hospitalized in the intensive care unit between March 2020 and December 2020 were eligible for this study. Multivariable logistic regression analysis was performed to evaluate the predictive value of the Glasgow Prognostic Score (GPS), Prognostic Index (PI), Prognostic Nutritional Index (PNI), and Systemic Inflammatory Index (SII).Results: In the univariate analyses, age, diabetes mellitus (DM), chronic kidney disease, acute kidney injury, hypothyroidism, hospitalization stay, lactate dehydrogenase (LDH), as-partate aminotransferase (AST), D-dimer, ferritin, C-reactive protein (CRP), albumin, hemoglobin level, platelet count, urea, creatinine level, PNI, GPS were significantly associated with mortality. However, in the multivariable logistic regression analysis of the inflamma-tion-based prognostic scores, only PNI was statistically significant in predicting in-hospital mortality (OR=0.83; [95% CI=0.71-0.97]; p=0.019).Conclusion: PNI is a more useful and powerful tool among these inflammation-based prognostic risk scores in predicting in-hospital mortality in COVID-19 patients.Item Which Sequence Should Be Used in the Thorax Magnetic Resonance Imaging of COVID-19: A Comparative Study(2023) Ates, Ayse sule; Yagdiran, Burak; Taydas, Onur; Faruk Ates, OmerBackground and aim: To evaluate and compare magnetic resonance imaging (MRI) sequences that could potentially be used in the diagnosis of coronavirus disease 2019 (COVID-19). Materials and methods: Included in the study were 42 patient who underwent thorax computed tomography (CT) for COVID-19 pneumonia and thorax MRI for any reason within 24 h after CT. The T2-weighted fast spin echo periodically rotated overlapping parallel lines with enhanced reconstruction (PROPELLER) (T2W-FSE-P), fast imaging employing steady-state acquisition, T2 fat-saturated FSE, axial T1 liver acquisition with volume acceleration (LAVA) and single-shot FSE images were compared in terms of their ability to show COVID-19 findings. Results: The mean age of the patients was 47.2 +/- 24 years. Of the patients, 22 were male (52.4%) and 20 (47.6%) were female. The interobserver intraclass coefficient (ICC) for the image quality score was the highest in the T2W-FSE-P sequence and lowest in the T1 LAVA sequence. All of the lesion-based evaluations of the interobserver agreement were statistically significant, with the kappa value varying between 0.798 and 0.998. Conclusion: All 5 sequences evaluated in the study were successful in showing the parenchymal findings of COVID-19. Since the T2W-FSE-P sequence had the best scores in both interobserver agreement and ICC for the image quality score, it was considered that it can be included in thorax MRI examinations to assist the diagnosis of COVID-19.Item Clinical Features of SARS-CoV-2 Infection in Patients Undergoing Solid-Organ Transplant: Baskent University Experience(2023) Yuce, Gulbahar Darilmaz; Ulubay, Gaye; Tek, Korhan; Bozbas, Serife Savas; Erol, Cigdem; Buyukasik, Piril; Haberal, Kemal Murat; Arslan, Ayse Hande; Akcay, Muserref Sule; Haberal, Mehmet; 0000-0002-2535-2534; 34635037; AAJ-1219-2021Objectives: The clinical features and treatment approaches, outcomes, and mortality predictors of COVID-19 in solid-organ transplant recipients have not been well defined. This study investigated the clinical features of COVID-19 infection in solid-organ transplant recipients at our center in Turkey. Materials and Methods: Our study included 23 solid-organ transplant recipients and 336 nontransplant individuals (143 previously healthy and 193 patients with at least 1 comorbidity) who were hospitalized due to COVID-19 disease in our hospital between March 2020 and January 2021. Demographic, clinical, and laboratory data of patients were compared. We used SPSS version 20.0 for statistical analysis. All groups were compared using chi-square and Mann-Whitney U tests. P <.05 was considered statistically significant. Results: Mean age of solid-organ transplant recipients was 49.8 +/- 13.7 years (78.3% men, 21.7% women). Among the 23 recipients, 17 (73.9%) were kidney and 6 (26.1%) were liver transplant recipients. Among nontransplant individuals, 88.7% (n = 298) had mild/moderate disease and 11.3% (n = 38) had severe disease. Among transplant recipients, 78.3% (n = 18) had mild/moderate disease and 21.7% (n = 5) had severe disease (P =.224). Transplant recipients had greater requirements for nasal oxygen (P =.005) and noninvasive mechanical ventilation (P =.003) and had longer length of intensive care unit stay (P =.030) than nontransplant individuals. No difference was found between the 2 groups in terms of mortality (P =.439). However, a subgroup analysis showed increased mortality in transplant recipients versus previously healthy patients with COVID-19 (P <.05). Secondary infections were major causes of mortality in transplant recipients. Conclusions: COVID-19 infection resulted in higher mortality in solid- organ transplant recipients versus that shown in healthy patients. More attention on secondary infections is needed in transplant recipients to reduce mortality.Item Clinical Characteristics and Outcomes of Nosocomial COVID-19 in Turkey: A Retrospective Multicenter Study(2023) Yildirim, Suleyman; Yilmaz, Celalettin; Polat, Gulru; Baris, Serap; Basyigit, Ilknur; Kaya, Ilknur; Anar, Ceyda; Bozkurt, Mihriban; Baykal, Husnu; Dirol, Hulya; Ozbey, Gamzenur; Ozsari, Emine; Cireli, Emel; Cirak, Ali; Tatar, Dursun; Gayaf, Mine; Karaoglanoglu, Selen; Aydin, Yener; Eroglu, Atilla; Olcar, Yildiz; Yildirim, Berna; Gursoy, Bengul; Yilmaz, Deniz; Niksarlioglu, Elif; Eren, Ramazan; Erdem, Aysegul; Tor, Muge Meltem; Fakili, Fusun; Colak, Mustafa; Ercelik, Merve; Tabaru, Ali; Ediboglu, OzlemObjective: To identify the clinical characteristics and outcomes of hospital-acquired SARS-CoV-2 infection during the vaccination period nationwide in Turkey. Methods: COVID-19 patients followed in the pandemic services across Turkey between January 1, 2021, and March 31, 2022 were investigated retrospectively. Nosocomial COVID-19 was defined as a patient neither diagnosed with COVID-19 nor suspected COVID-19 at the hospital admission and was confirmed COVID-19 >= 5 days after hospital admission. The primary outcome of this study was in-hospital mortality; demographic features and vaccination status was compared between survivors and non survivors. Results: During the study period, 15 573 COVID-19 patients were followed in 18 centers and 543 (3.5%) patients were nosocomial COVID-19. Most patients with nosocomial COVID-19 (80.4%) were transferred from medical wards. 162 (29.8%) of the patients with nosocomial COVID-19 admitted to the intensive care unit due to disease severity and 138 (25.4%) of the patients died during hospital stay. Advanced age (>= 65 years) and number of comorbid diseases (>= 2) was found to be associated with mortality in nosocomial COVID-19 (OR 1.74, 95% CI 1.11-2.74 and OR 1.60, 95% CI 1.02-2.56, respectively). Vaccination was associated with survival in nosocomial COVID-19 (OR 0.25, 95% CI0.16-0.38). Conclusions: Patients with nosocomial COVID-19 had increased admission to intensive care units and higher mortality rate. Vaccination can decrease the in-hospital mortality rate.Item Simultaneous Sudden Hearing Loss and Peripheral Facial Paralysis in a Patient With Covid-19(2023) Ozer, Fulya; Alkan, Ozlem; https://orcid.org/0000-0001-5381-6861; 34219500; ABC-1809-2020Although peripheral facial paralysis and sudden sensorineural hearing loss are not as common as anosmia, they are reported neurological manifestations of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). We present a 62-year-old, serologically COVID-19 positive woman with seventh and eighth nerve involvement showed electrophysiologically with Auditory Brainstem Response and electroneurography and radiologically with internal acoustic canal magnetic resonance imaging. This single case report suggests a possible association between the SARS-CoV-2 infection with simultaneous sudden sensorineural hearing loss and isolated facial paralysis. However, further studies are needed to determine whether this relationship is coincidental or occasional.Item The Impact of COVID-19 Infection on Hemodialysis Patients vs Kidney Transplant Patients(2023) Tasci, Halil Ibrahim; 38131360AIM: AS in the whole world, there has been a decrease in the number of both cadaveric and living-donor kidney transplants in our country due to the COVID-19 pandemic. This study aimed at comparing the data of patients who previously underwent a kidney transplant in our clinic and patients on hemodialysis treatment and were diagnosed with COVID-19 during their follow-ups to find answer to the question "Should we postpone kidney transplants during the pandemic or perform transplants as soon as possible?". MATERIAL AND METHOD: Among those diagnosed with COVID-19 during follow-ups between March 2020 and March 2021 and treated on an inpatient or outpatient basis, the data of patients who previously underwent a kidney transplant in Baskent University Faculty of Medicine, Department of Transplantation, Konya Practice and Research Hospital and hemodialysis patients followed up by the Nephrology Clinic were retrospectively analyzed. RESULTS: In our study, intensive care stay (Group 1:48.8%, Group 2: 40.4%, P=.34), intubation requirement (Group 1: 35%, Group 2: 34.6%, P=.96) and mortality (Group 1: 36.3%, Group 2: 34%, P=.84) rate was higher in the hemodialysis group, although no statistically significant difference was found. CONCLUSION: All this literature information and our study suggests that mortality rates were statistically similar or lower for transplant group. So it is unnecessary to delay kidney transplantation in patients with appropriate indications.Item Psychological Factors Responsible for Low Adherence To Mask-Wearing Measures During The COVID-19 Pandemic(2022) Kilic, Cengiz; Yildiz, M. Irem; Emekli, Esra; Gulsen, Gulhan; Alp, Anil; 36416230; HHZ-1045-2022BackgroundThe COVID-19 pandemic has led to >6 million deaths. Anti-mask movements may decrease the effects of preventive measures. Psychological factors that may be related to anti-mask behaviour are not well researched. AimsThis study aims to determine the psychological correlates of anti-mask attitudes and behaviour in an online general population sample, focusing on the possible role of claustrophobia. MethodData on attitudes and behaviour toward mask-wearing were collected from an online sample of 3709 people. Predictors of both anti-mask attitudes and behaviour were assessed with linear and logistic regression analyses. ResultsFew people (3.3%) were overtly opposed to mask-wearing; mask opposition was more common in men than women. Predictors of negative attitude toward mask-wearing and low adherence to mask-related measures were similar and included male gender, lower education, lower income, being employed, having had COVID-19 and lower COVID-19-related anxiety. Psychopathology measures did not show a prediction, whereas claustrophobia had a significant prediction that was over and above those of other predictors. Avoidance behaviour had similar predictors, except for higher COVID-19-related anxiety. ConclusionsAlthough low adherence to mask-wearing during the pandemic was not related to having a mental disorder, it may partly be caused by psychological factors. Those who had a negative attitude also reported lower adherence behaviour, and were characterised by being male, having lower education, being employed and having lower COVID-19-related anxiety; claustrophobia was a strong predictor of attitude. Understanding psychological factors responsible for low adherence may help to decrease morbidity and mortality in future pandemics.Item Acute Appendicitis During Coronavirus Disease 2019 in Turkiye: Changes in Clinical Approach, Treatment, and Diagnosis Modalities: A Retrospective and Cohort Study(2022) Ersoz, Siyar; Bozkurt, Mehmet Abdussamet; Kulle, Cemil Burak; Elhan, Atilla Halil; Gulcu, Baris; Tarim, Ismail Alper; Bozbiyik, Osman; Yasar, Necdet Fatih; Atalay, Vafi; Yonder, Huseyin; Yalav, Orcun; Kuzu, Mehmet Ayha; Karakayali, Feza Yarbug; 36453790BACKGROUND: The novel coronavirus disease 2019 (COVID-19) has resulted in major changes in health-care systems and emergency surgical interventions. Here, we examined patients with acute appendicitis who presented to emergency departments and compared diagnosis, treatment, and post-treatment processes before and during the pandemic period and investigated how the pandemic affected management of acute appendicitis. METHODS: A national, multicenter, and cohort study model was designed that included patients older than 18 years of age diagnosed with acute appendicitis clinically and/or radiologically, with patients compared before (pre-pandemic period: January 1-April 30, 2019) and after (pandemic period: January 1-April 30, 2020) the pandemic. Our investigation included comparisons of pre-operative imaging methods, presence of plastron appendicitis/abscess, conservative/surgical approach, type of anesthesia given, laparoscopic/ open surgical approach, bowel resection rates, drain insertion rates, and presence of post-operative complications RESULTS: For the two study groups, 8972 patients from 69 centers were examined, with 4582 patients operated in the pre-pandemic period and 4234 patients operated in the pandemic period. During the pandemic period, 63.6% of patients underwent open surgery, whereas 34.4% had laparoscopic surgery. Although 60 patients (1.3%) requested non-operative follow-up in the pre-pandemic period, 94 patients (2.2%) requested this in the pandemic period. When conditions of patients were evaluated regardless of their own wishes, 114 patients (2.4%) before and 163 patients (3.8%) during the pandemic received non-operative follow-up. CONCLUSION: Our study did not show the direct correlation between the application of COVID-19-related restrictions and the severity of acute appendicitis. Although non-operative management rates have been increased during the COVID-19 period, the incidences of both complicated and the uncomplicated appendicitis were similar during the COVID-19 crisis period. Given this information non-operative management can be employed for patients diagnosed with appendicitis.Item SARS-Cov-2 Infection Might Be A Predictor of Mortality in Intracerebral Hemorrhage(2023) Mowla, Ashkan; Shakibajahromi, Banafsheh; Shahjouei, Shima; Baharvahdat, Humain; Harandi, Ali Amini; Rahmani, Farzad; Mondello, Stefania; Rahimian, Nasrin; Cernigliaro, Achille; Hokmabadij, Elyar Sadeghi; Ebrahimzadeh, Seyed Amir; Ramezani, Mahtab; Mehrvar, Kaveh; Farhoudi, Mehdi; Naderi, Soheil; Fenderi, Shahab Mahmoudnejad; Pishjoo, Masoud; Alizada, Orkhan; Purroy, Francisco; Requena, Manuel; Tsivgoulis, Georgios; Zand, Ramin; 36455388Background: SARS-CoV-2 infection may be associated with uncommon complications such as intracerebral hemorrhage (ICH), with a high mortality rate. We compared a series of hospitalized ICH cases infected with SARS-CoV-2 with a non-SARS-CoV-2 infected control group and evaluated if the SARS-CoV-2 infection is a predictor of mortality in ICH patients.Methods: In a multinational retrospective study, 63 cases of ICH in SARS-CoV-2 infected patients admitted to 13 tertiary centers from the beginning of the pandemic were collected. We compared the clinical and radiological characteristics and in-hospital mortality of these patients with a control group of non-SARS-CoV-2 infected ICH patients of a previous cohort from the country where the majority of cases were recruited.Results: Among 63 ICH patients with SARS-CoV-2 infection, 23 (36.5%) were women. Compared to the non-SARS-CoV-2 infected control group, in SARS-CoV-2 infected patients, ICH occurred at a younger age (61.4 +/- 18.1 years versus 66.8 +/- 16.2 years, P = 0.044). These patients had higher median ICH scores ([3 (IQR 2-4)] versus [2 (IQR 1-3)], P = 0.025), a more frequent history of diabetes (34% versus 16%, P = 0.007), and lower platelet counts (177.8 +/- 77.8 x 109/L versus 240.5 +/- 79.3 x 109/L, P < 0.001). The in-hospital mortality was not significantly different between cases and controls (65% versus 62%, P = 0.658) in univariate analysis; however, SARS-CoV-2 infection was significantly associated with in-hospital mortality (aOR = 4.3, 95% CI: 1.28-14.52) in multivariable analysis adjusting for potential confounders.Conclusion: Infection with SARS-CoV-2 may be associated with increased odds of in-hospital mortality in ICH patients.