{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,14]],"date-time":"2026-09-14T23:07:41Z","timestamp":1789427261864,"version":"build-2803163510"},"reference-count":84,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2022,2,28]],"date-time":"2022-02-28T00:00:00Z","timestamp":1646006400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"University Hospital Olomouc","award":["DRO FNOL 00098892"],"award-info":[{"award-number":["DRO FNOL 00098892"]}]},{"DOI":"10.13039\/501100007059","name":"Palack\u00fd University Olomouc","doi-asserted-by":"publisher","award":["IGA_LF_2022_018"],"award-info":[{"award-number":["IGA_LF_2022_018"]}],"id":[{"id":"10.13039\/501100007059","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100009553","name":"Czech Health Research Council","doi-asserted-by":"publisher","award":["AZV NU22-B-112"],"award-info":[{"award-number":["AZV NU22-B-112"]}],"id":[{"id":"10.13039\/501100009553","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Life"],"abstract":"<jats:p>Coronavirus disease 2019 (COVID-19) is a threat to patients not only because of its acute course, but also because of various complications occurring in the following period, that is, more than 28 days after the onset of acute infection. The present study identified a total of 121 patients hospitalized 29 or more days after the first positive result of a PCR test for SARS-CoV-2, of whom 98 patients were included in the study. Patients were divided into two groups by the time interval between the positive COVID-19 test result and hospitalization date. The time intervals were week 5\u201311 in an ongoing-COVID group (57.1% of patients) and 12 or more weeks in a post-COVID-group (42.9%). The most frequent reason for hospitalization was respiratory tract infection (58.2%). Pneumonia accounted for 77.2% of these cases. Other reasons for hospitalization were interstitial lung disease (22.4%), pulmonary embolism (8.2%), and sarcoidosis (6.1%). The study group was further divided according to the causes of hospitalization into subgroups with infections and other causes. In the group with infectious diseases, there was a shorter time period between PCR positivity and hospitalization and there were significantly more frequent non-respiratory complications. In the entire sample, the in-hospital mortality was 5.1%.<\/jats:p>","DOI":"10.3390\/life12030357","type":"journal-article","created":{"date-parts":[[2022,2,28]],"date-time":"2022-02-28T20:11:14Z","timestamp":1646079074000},"page":"357","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":18,"title":["Pulmonary Complications after COVID-19"],"prefix":"10.3390","volume":"12","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6184-5731","authenticated-orcid":false,"given":"Petr","family":"Jakubec","sequence":"first","affiliation":[{"name":"Department of Pulmonary Diseases and Tuberculosis, Faculty of Medicine and Dentistry, Palack\u00fd University Olomouc, Hn\u011bvot\u00ednsk\u00e1 3, 77900 Olomouc, Czech Republic"},{"name":"Department of Pulmonary Diseases and Tuberculosis, University Hospital Olomouc, I. P. Pavlova 185\/6, 77900 Olomouc, Czech Republic"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kate\u0159ina","family":"Fi\u0161erov\u00e1","sequence":"additional","affiliation":[{"name":"Department of Microbiology, Faculty of Medicine and Dentistry, Palack\u00fd University Olomouc, Hn\u011bvot\u00ednsk\u00e1 3, 77900 Olomouc, Czech Republic"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Samuel","family":"Genzor","sequence":"additional","affiliation":[{"name":"Department of Pulmonary Diseases and Tuberculosis, Faculty of Medicine and Dentistry, Palack\u00fd University Olomouc, Hn\u011bvot\u00ednsk\u00e1 3, 77900 Olomouc, Czech Republic"},{"name":"Department of Pulmonary Diseases and Tuberculosis, University Hospital Olomouc, I. P. Pavlova 185\/6, 77900 Olomouc, Czech Republic"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4621-8868","authenticated-orcid":false,"given":"Milan","family":"Kol\u00e1\u0159","sequence":"additional","affiliation":[{"name":"Department of Microbiology, Faculty of Medicine and Dentistry, Palack\u00fd University Olomouc, Hn\u011bvot\u00ednsk\u00e1 3, 77900 Olomouc, Czech Republic"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2022,2,28]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"n136","DOI":"10.1136\/bmj.n136","article-title":"Managing the long term effects of COVID-19: Summary of NICE, SIGN, and RCGP rapid guideline","volume":"372","author":"Shah","year":"2021","journal-title":"BMJ"},{"key":"ref_2","first-page":"114","article-title":"A Review of Persistent Post-COVID Syndrome (PPCS)","volume":"20","author":"Oronsky","year":"2021","journal-title":"Clin. 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