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Typical and Atypical Clinics in COVID-19 (SARS-Cov-2) RT-PCR Positive Patients: A Multicenter Retrospective Study

Cilt: 48 Sayı: 5 26 Ağustos 2026
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Typical and Atypical Clinics in COVID-19 (SARS-Cov-2) RT-PCR Positive Patients: A Multicenter Retrospective Study

Öz

In this study, we sought to determine the consistency of symptoms in patients admitted to three high-volume emergency departments with a diagnosis of COVID-19 with the standard definition published by the Turkish Ministry of Health, and to examine the relationship between symptom type and clinical outcomes. This multicentre, retrospective, observational study included adult patients aged 18 years and over who tested positive for SARS-CoV-2 by RT-PCR in the emergency departments of three hospitals between 11 March and 31 December 2020. Presentation symptoms were classified as typical or atypical in accordance with the national COVID-19 guidelines dated 7 December 2020. Demographic characteristics, vital signs, laboratory results, comorbidities and clinical outcomes were compared between the two groups. A total of 5,274 patients were enrolled; 2,763 (52.4%) were male, and the median age was 63 years. Of these, 4,262 (80.8%) had typical and 1,012 (19.2%) had atypical presentations. Dyspnea was the leading complaint (38.7%), followed by cough (29.9%) and fatigue (20.6%). Patients in the typical group were older (median 64 vs. 60 years, p<0.001), had lower oxygen saturation (90% vs. 91%, p<0.001), and demonstrated higher inflammatory markers including CRP, D-dimer, LDH, and ferritin. Intensive care unit admission was more frequent in the typical group (10.1% vs. 3.2%, p<0.001), as was in-hospital mortality (10.5% vs. 3.0%, p<0.001). Approximately one in five COVID-19 patients presented to the ED with atypical complaints. It should be noted that atypical or asymptomatic patients in terms of clinical course may be missed with symptom-based screening alone. Patients presenting with typical symptoms, particularly those with dyspnea and underlying comorbidities, had considerably worse outcomes and warrant close monitoring.

Anahtar Kelimeler

Destekleyen Kurum

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Etik Beyan

The study was approved by the Eskisehir Osmangazi University Non-Interventional Clinical Research Ethics Committee (Approval no: E-25403353-050.99-171631, Decision no: 01, Date: 02.03.2021). The study complied with the Declaration of Helsinki and research and publication ethics.

Teşekkür

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Kaynakça

  1. 1. WHO COVID-19 Dashboard. Geneva: World Health Organization, 2020. Available at: https://covid19.who.int/. Accessed 16 November 2022.
  2. 2. Zhai P, Ding Y, Wu X, Long J, Zhong Y, Li Y. The epidemiology, diagnosis and treatment of COVID-19. Int J Antimicrob Agents. 2020;55(5):105955.
  3. 3. Seyed Hosseini E, Riahi Kashani N, Nikzad H, Azadbakht J, Hassani Bafrani H, Haddad Kashani H. The novel coronavirus Disease-2019 (COVID-19): Mechanism of action, detection and recent therapeutic strategies. Virology. 2020;551:1-9.
  4. 4. Phelan AL, Katz R, Gostin LO. The Novel Coronavirus Originating in Wuhan, China: Challenges for Global Health Governance. JAMA. 2020;323(8):709-710.
  5. 5. Coronaviridae Study Group of the International Committee on Taxonomy of Viruses. The species Severe acute respiratory syndrome-related coronavirus: classifying 2019-nCoV and naming it SARS-CoV-2. Nat Microbiol. 2020;5:536-544.
  6. 6. Muralidar S, Ambi SV, Sekaran S, Krishnan UM. The emergence of COVID-19 as a global pandemic: Understanding the epidemiology, immune response and potential therapeutic targets of SARS-CoV-2. Biochimie. 2020;179:85-100.
  7. 7. T.C. Saglik Bakanligi Halk Sagligi Genel Mudurlugu COVID-19 Bilimsel Danisma Kurulu Calismasi. Available at: https://covid19.saglik.gov.tr. Accessed 18 November 2022.
  8. 8. American Society for Microbiology. 2019 Novel Coronavirus. Update: Uncoating the Virus. Available at: https://asm.org. Accessed 18 November 2022.

Ayrıntılar

Kaynak Göster

APA
Alagöz, R., Acar, N., Karakılıç, E., Özakın, E., Kaya, Ş., Kaplan, D., Ercan, V., Baloğlu Kaya, F., Kuas, Ç., Türkdoğan, O., & Çanakçı, M. E. (2026). Typical and Atypical Clinics in COVID-19 (SARS-Cov-2) RT-PCR Positive Patients: A Multicenter Retrospective Study. Osmangazi Tıp Dergisi, 48(5), 956-963. https://doi.org/10.20515/otd.1931971
AMA
1.Alagöz R, Acar N, Karakılıç E, vd. Typical and Atypical Clinics in COVID-19 (SARS-Cov-2) RT-PCR Positive Patients: A Multicenter Retrospective Study. Osmangazi Tıp Dergisi. 2026;48(5):956-963. doi:10.20515/otd.1931971
Chicago
Alagöz, Rıdvan, Nurdan Acar, Evvah Karakılıç, vd. 2026. “Typical and Atypical Clinics in COVID-19 (SARS-Cov-2) RT-PCR Positive Patients: A Multicenter Retrospective Study”. Osmangazi Tıp Dergisi 48 (5): 956-63. https://doi.org/10.20515/otd.1931971.
EndNote
Alagöz R, Acar N, Karakılıç E, Özakın E, Kaya Ş, Kaplan D, Ercan V, Baloğlu Kaya F, Kuas Ç, Türkdoğan O, Çanakçı ME (01 Ağustos 2026) Typical and Atypical Clinics in COVID-19 (SARS-Cov-2) RT-PCR Positive Patients: A Multicenter Retrospective Study. Osmangazi Tıp Dergisi 48 5 956–963.
IEEE
[1]R. Alagöz vd., “Typical and Atypical Clinics in COVID-19 (SARS-Cov-2) RT-PCR Positive Patients: A Multicenter Retrospective Study”, Osmangazi Tıp Dergisi, c. 48, sy 5, ss. 956–963, Ağu. 2026, doi: 10.20515/otd.1931971.
ISNAD
Alagöz, Rıdvan - Acar, Nurdan - Karakılıç, Evvah - Özakın, Engin - Kaya, Şeyhmus - Kaplan, Davut - Ercan, Volkan v.dğr. “Typical and Atypical Clinics in COVID-19 (SARS-Cov-2) RT-PCR Positive Patients: A Multicenter Retrospective Study”. Osmangazi Tıp Dergisi 48/5 (01 Ağustos 2026): 956-963. https://doi.org/10.20515/otd.1931971.
JAMA
1.Alagöz R, Acar N, Karakılıç E, Özakın E, Kaya Ş, Kaplan D, Ercan V, Baloğlu Kaya F, Kuas Ç, Türkdoğan O, Çanakçı ME. Typical and Atypical Clinics in COVID-19 (SARS-Cov-2) RT-PCR Positive Patients: A Multicenter Retrospective Study. Osmangazi Tıp Dergisi. 2026;48:956–963.
MLA
Alagöz, Rıdvan, vd. “Typical and Atypical Clinics in COVID-19 (SARS-Cov-2) RT-PCR Positive Patients: A Multicenter Retrospective Study”. Osmangazi Tıp Dergisi, c. 48, sy 5, Ağustos 2026, ss. 956-63, doi:10.20515/otd.1931971.
Vancouver
1.Rıdvan Alagöz, Nurdan Acar, Evvah Karakılıç, Engin Özakın, Şeyhmus Kaya, Davut Kaplan, Volkan Ercan, Filiz Baloğlu Kaya, Çağlar Kuas, Onur Türkdoğan, Mustafa Emin Çanakçı. Typical and Atypical Clinics in COVID-19 (SARS-Cov-2) RT-PCR Positive Patients: A Multicenter Retrospective Study. Osmangazi Tıp Dergisi. 01 Ağustos 2026;48(5):956-63. doi:10.20515/otd.1931971


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