Person: KORTEN, VOLKAN
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KORTEN
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VOLKAN
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Publication Metadata only Kandan izole edilen çok ilaca dirençli escherichia coli, klebsiella pneumoniae ve pseudomonas aeruginosa kökenlerinde meropenem-vaborbaktamın etkinliğinin diğer Antibiyotiklerle karşılaştırmalı olarak araştırılması: çok merkezli çalışma(2022-11-16) GÜNEŞER, DENİZ; HASDEMİR GÖKBOĞA, MÜNEVVER UFUK; KORTEN, VOLKAN; ALTINKANAT GELMEZ, GÜLŞEN; Altınkanat Gelmez G., Güneşer D., Hasdemir Gökboğa M. U. , Korten V., Sağıroğlu P., Hazırolan G., Gür D., Öktem İ. M. A. , Aygün G.Publication Open Access Clinical characteristics and risk factors associated with severe disease and outcome of patients with COVID-19(2022-03-01) KORTEN, VOLKAN; Ozel A. S., Altunal L. N., Aydin M., Unal B., Cam G., Ozer M. C., KORTEN V.Introduction: Since the beginning of the pandemic, factors associated with mortality in patients with corona virus infection disease 2019 (COVID-19) have been investigated. Comorbidities and increased age have been frequently reported to be associated with mortality. We aimed to evaluate the factors associated with unfavorable outcome of patients with COVID-19 at an early period of the pandemic. Methodology: This single center, retrospective, observational study was conducted among laboratory confirmed COVID-19 patients hospitalized between March 11 and May 5, 2020, at Umraniye Training and Research Hospital, Istanbul, Turkey. The effects of the severity of illness, comorbidities, symptoms, and laboratory findings on the clinical outcome were evaluated. Factors associated with unfavorable outcome (necessity of mechanical ventilation or death) were examined using Cox proportional hazards models. Results: Out of a total of 728 patients, 53.8% were men and median age 54 years. The 30-day mortality rate was 4.9% among all hospitalized patients. A logistic regression model identified six predictors of unfavorable clinical outcome: age, severity of illness, the numbers of comorbidities, lymphopenia, high levels of C-reactive protein, and procalcitonin. Conclusions: The mortality rate was lower among the patients with COVID-19, hospitalized during the early period of the pandemic. Older age, higher severity score on admission, the numbers of comorbidities, higher levels of C-reactive protein, procalcitonin, and lymphopenia were identified to be associated with unfavorable outcome of the hospitalized patients with COVID-19.Publication Metadata only Prevalence of cardiovascular disease (cvd) and comparison of risk category predictions of systemic coronary risk evaluation 2 (score2) and four other cvd risk calculators among plwhiv in Turkey(2022-10-01) TİGEN, ELİF; KORTEN, VOLKAN; TİGEN E., Gokengin D., Ozdemir H. O. , Akalin H., Kaya B., Deveci A., Inan A., Inan D., Altunsoy A., Ozel A., et al.Publication Open Access Medication reconciliation service in hospitalized patients with infectious diseases during coronavirus disease-2019 pandemic: An observational study(2023-08-01) ENVER, CÜNEYD; ERTÜRK ŞENGEL, BUKET; SANCAR, MESUT; KORTEN, VOLKAN; OKUYAN, BETÜL; ENVER C., ERTÜRK ŞENGEL B., SANCAR M., KORTEN V., OKUYAN B.Objectives: To determine the prevalence and type of medication discrepancies and factors associated with unintentional discrepancies and identify the rate of hospital readmission and emergency service visit within 30 days after discharge among hospitalized patients with infectious diseases and receiving clinical pharmacist-led medication reconciliation during the coronavirus disease-2019 (COVID-19) pandemic. Materials and Methods: This observational study was conducted in the internal medicine and infectious diseases wards of a tertiary university hospital between July 2020 and February 2021 among hospitalized adult patients with infectious diseases. Medication reconciliation service (including patient counseling) was provided in person or by telephone. The number and type of medication discrepancies detected during the medication reconciliation services, the acceptance rate of pharmacists’ recommendation, and factors associated with having at least one unintentional medication discrepancy at admission were evaluated. At follow-up, hospital readmission and emergency service visit within 30 days after discharge were assessed by telephone. Results: Among 146 patients, 84 (57.5%) had at least one unintentional discrepancy at admission. Only three unintentional discrepancies were determined in three patients at hospital discharge. All the pharmacists’ recommendations for medication discrepancies were accepted by the physicians. Having COVID-19 [odds ratio (OR): 2.25, 95% confidence interval (CI): 1.15-4.40; p<0.05], being at a high risk for medication error (OR: 2.01, 95% CI: 1.03-3.92; p<0.05), and higher number of medications used at home (OR: 1.41, 95% CI: 1.23-1.61; p<0.001) were associated with having at least one unintentional discrepancy at admission. The rates of 30 day hospital readmission and admission to the emergency medical service were 12.3% and 15.8%, respectively. Conclusion: Medication reconciliation service provided by in-person or by telephone was useful for detecting and solving unintentional medication discrepancies during the COVID-19 pandemic.Publication Metadata only Clinical Pharmacist-Led Medication Review in Hospitalized Confirmed or Probable Patients with COVID-19 During the First Wave of COVID-19 Pandemic(2024-01-01) ÜNDER, DUYGU; ENVER, CÜNEYD; DEMİRCİ, MUHAMMED YASİR; AYHAN, YUNUS EMRE; ÖZGAN, BETÜL; İLERLER, ENES EMİR; OKUYAN, BETÜL; ERTÜRK ŞENGEL, BUKET; KOCAKAYA, DERYA; SİLİ, ULUHAN; TİGEN, ELİF; KARAKURT, SAİT; KORTEN, VOLKAN; SANCAR, MESUT; ÜNDER D., ENVER C., DEMİRCİ M. Y., AYHAN Y. E., ÖZGAN B., İLERLER E. E., OKUYAN B., ERTÜRK ŞENGEL B., KOCAKAYA D., SİLİ U., et al.Objectives: Drug-related problems (DRPs) result in serious problems among hospitalized patients, high rates of morbidity and mortality, and increased healthcare costs. This study aimed to identify DRPs by clinical pharmacist-led medication review in hospitalized probable patients with coronavirus disease-2019 (COVID-19) during the first wave of the COVID-19 pandemic. Materials and Methods: This retrospective cross-sectional study was conducted at the COVID-19 inpatient services of a tertiary university hospital in Türkiye for 3 months (between March 2020 and June 2020) and included hospitalized confirmed or probable COVID-19 patients. The World Health Organization and Turkish Ministry of Health Guidelines case definitions were used to define confirmed and probable COVID-19 patients. Six clinical pharmacy residents provided medication review services during their education and training. DRPs were classified based on the Pharmaceutical Care Network Europe V9.00. The physician’s acceptance rate of clinical pharmacists’ recommendations was assessed. Results: Among 202 hospitalized patients with probable or confirmed COVID-19, 132 (65.3%) had at least one drug-related problem. Two hundred and sixty-four DRPs were identified. Drug selection (85.6%) and dose selection (9.2%) were the most common causes of these problems. Among the 80 clinical pharmacist interventions, 48.8% were accepted by the physicians. Conclusion: Clinical pharmacists identified a significant number of DRPs during the COVID-19 pandemic, particularly those related to drug interactions and drug safety, such as adverse drug reactions. This study highlights the importance of detecting and responding to DRPs in the COVID-19 pandemic.Publication Metadata only Prevalence of polypharmacy and potential drug-drug interactions associated with risk factors in the era of hiv integrase inhibitors: A prospective clinical study(2023-02-01) YAĞÇI ÇAĞLAYIK, DİLEK; TİGEN, ELİF; SİLİ, ULUHAN; ERTÜRK ŞENGEL, BUKET; KORTEN, VOLKAN; Altunal L. N., YAĞÇI ÇAĞLAYIK D., Ozel A. S., TİGEN E., SİLİ U., ERTÜRK ŞENGEL B., Aydin M., KORTEN V.People living with human immunodeficiency virus (PLWH), with the availability of modern antiretroviral drugs, have multiple comorbidities, which increase the risk of polypharmacy and potential drug-drug interactions (PDDIs). This is a particularly important issue for the aging population of PLWH. This study aims to review the prevalence and risk factors for PDDIs and polypharmacy in the era of HIV integrase inhibitors. A cross-sectional, two-center, prospective observational study was conducted on Turkish outpatients between October 2021 and April 2022. Polypharmacy was defined as the use of >= 5 non-HIV medications, excluding over-the-counter (OTC) drugs, and PDDIs were classified using the University of Liverpool HIV Drug Interaction Database (harmful/red flagged and potentially clinically relevant/amber flagged). The median age of the 502 PLWH included in the study was 42 +/- 12.4 years and 86.1% were males. Most individuals (96.4%) were given integrase-based regimens (unboosted 68.7% and boosted 27.7%). In total, 30.7% of individuals were taking at least one OTC drug. The prevalence of polypharmacy was 6.8% (9.2% when OTC drugs were included). During the study period, the prevalence of PDDIs was 1.2% for red flag PDDIs and 16% for amber flag PDDIs. CD4(+) T cell count >500 cells/mm(3), number of comorbidities >= 3, comedication with drugs affecting blood and blood-forming organs, cardiovascular drugs, and vitamin/mineral supplements were associated with red flag or amber flag PDDIs. Drug interaction prevention is still important in HIV care. Individuals with multiple comorbidities should be closely monitored for non-HIV medications to prevent PDDIs.