Abstract: Article describes cases of detection of viral pneumonia in patients who underwent additional examination before planned hospitalization for surgical treatment in the presence of negative test results for the SARS-CoV-2 virus. Aim: was to detect early computed tomography (CT) signs of COVID-19 during admission to hospital, in case of presence of normal clinical and laboratory data and negative results of PCR test. Material and methods: image analysis of CT examinations of chest organs in patients admitted for surgical treatment for various osteoarticular pathologies, for the period of 3 months, was carried out in radiology department. Results: during CT examination of chest organs, in 9,1% patients, signs of viral pneumonia were revealed, including those caused by SARS-CoV-2, in condition of negative results of PCR tests, immunoserological tests for the presence of immunoglobulins M and G to SARS-CoV-2. Conclusion: computed tomography of lungs can be considered the «gold standard» of diagnostics, which makes it possible to detect early subclinical inflammatory changes in lungs, in particular, in pneumonia associated with COVID-19, which is the main task during a pandemic.
Abstract: Background: pulmonary embolism (PE), is one of the most common cardiopulmonary pathologies in the world, has a high risk of developing after major operations on the osteoarticular system. Mortality from PE remains high, ranking third after myocardial infarction and stroke. Aim: was to identify tomographic signs of PE in patients with osteoarticular pathology in the postoperative period. Materials and methods: we analyzed results of computed angiopulmonography of 11 patients with suspicion on pulmonary embolism who were operated on osteoarticular pathology at the Federal Center for Traumatology, Orthopedics and Endoprosthetics of the Ministry of Health of the Russian Federation (Cheboksary). Patients showed such indirect signs of PE as discshaped atelectasis of lung tissues, expansion of diameter of pulmonary trunk and right pulmonary artery, signs of congestion in pulmonary circulation and pulmonary hypertension. Direct radiological signs included occlusion of a branch of pulmonary artery by thrombus. Results: in 91% of examined patients, occlusion of branch of pulmonary artery by thrombus was detected, in 82% of cases - the defeat of branches of right pulmonary artery. Embolism at the level of lobar arteries was detected in 30%, segmental branches - in 60% of patients; signs of pulmonary embolism of one of subsegmental branches of right pulmonary artery - in one patient (10%). Bilateral thrombosis was observed in two patients, including massive bilateral PE in one case. One patient had discoid atelectasis of lung tissues. Expansion of diameter of pulmonary trunk and right pulmonary artery was observed in 78% of patients with PE, signs of congestion in pulmonary circulation - in 27% of cases, pulmonary hypertension - in 73% of cases. Conclusion: visualization of direct and indirect signs of pulmonary embolism during computed pulmonary angiography confirmed the diagnosis in all examined patients. The detection of blood clots in pulmonary arteries themselves is the main criterion in making the final diagnosis. References 1. Nikolaev NS, Trofimov NA, Kachaeva ZA, et al. Prevention and treatment of pulmonary thromboembolism in traumatology and orthopedics. Tutorial. Cheboksary: Publishing house of the Chuvash University, 2020; 108 [In Russ]. 2. Krivosheeva EN, Komarov AL, Shakhnovich RM, et al. Clinical analysis of a patient with antiphospholipid syndrome and submassive pulmonary embolism. Aterotromboz. 2018; (1): 76-87 [In Russ]. https://doi.org/10.21518/2307-1109-2018-1-76-87 3. Hepburn-Brown M, Darvall J, Hammerschlag G. Acute pulmonary embolism: a concise review of diagnosis and management. Internal Medicine Journal. 2019; 49(1): 15-27. https://doi.org/10.1111/imj.14145 4. Ostapenko EN, Novikova NP. Pulmonary embolism: modern approaches to diagnosis and treatment. Ekstrennaya meditsina. 2013; 1(5): 84-110 [In Russ]. 5. Sinyukova AS, Kiseleva LP, Kupaeva VA. A clinical case of recurrent pulmonary embolism and the complexity of the diagnostic search. Sovremennaya meditsina: aktual'nye voprosy. 2015; (42-43): 24-31 [In Russ]. 6. Bagrova IV, Kukharchik GA, Serebryakova VI, et al. Modern approaches to the diagnosis of pulmonary embolism. Flebologiya. 2012; 6(4): 35-42 [In Russ]. 7. Kuznetsov AB, Boyarinov GA. Early diagnosis of pulmonary embolism (review). Sovremennye tekhnologii v meditsine. 2016; 8(4): 330-336 [In Russ]. 8. Bershteyn LL. Pulmonary embolism: clinical manifestations and diagnosis in the light of the new recommendations of the European Society of Cardiology. Kardiologiya. 2015; 55(4): 111-119 [In Russ]. https://doi.org/10.18565/cardio.2015.4.111-119 9. Sakharyuk AP, Shimko VV, Tarasyuk ES, et al. Pulmonary embolism in clinical practice. Byulleten' fiziologii i patologii dykhaniya. 2015; (55): 48-53 [In Russ]. 10. M Al-hinnawi A-R. Computer-Aided Detection, Pulmonary Embolism, Computerized Tomography Pulmonary Angiography: Current Status. Intech Open. 2019; 19. http://doi.org/10.5772/intechopen.79339 11. Gilyarov MYu, Konstantinova EV. How do new approaches to the treatment of pulmonary embolism affect disease outcome? Meditsinskiy sovet. 2017; (7): 48-55 [In Russ]. https://doi.org/10.21518/2079-701X-2017-7-48-55 12. Konstantinides S. Guidelines on the diagnosis and management of acute pulmonary embolism. The Task Force for the Diagnosis and Management of Acute Pulmonary Embolism of the European Society of Cardiology (ESC). Eur. Heart J. 2014; (35): 3033-3080. 13. Tagalakis V, Patenaude V, Kahn SR, Suissa S. Incidence of and mortality from venous thromboembolism in a real-world population: the Q-VTE Study Cohort. Am J Med. 2013; 126(832): 13-21.
