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      Exploring the impact of the COVID‐19 pandemic on cardiac surgical services: A scoping review

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          Abstract

          <p id="d5943808e320">Cardiac surgery was severely affected by the COVID‐19 pandemic. Reallocation of resources, conversion of surgical intensive care units and wards to COVID‐19 facilities, increased risk of nosocomial transmission to cardiac surgery patients, lead to reduced accessibility, quality, and affordability of health care facilities to cardiac surgery patients. Increasing the mortality and morbidity rate among such patients. Cardiac patients are at an increased risk to develop a severe illness if infected by COVID‐19 and are associated with a high mortality rate. Therefore, measures had to be taken to reduce the spread of the virus. Various approaches such as the hubs and the spokes centers, or parallel system were enforced. Elective surgeries were postponed while urgent surgeries were prioritized. Use of personal protective equipments and surgeries performed by only senior surgeons became necessary. Surgical trainees were also affected as limited training opportunities deprived them of the experience required to complete their fellowship. Some of the trainees were reallocated to COVID‐19 wards, while others invested their time in research opportunities. Online platforms were used for teaching, meetings, and workshops across the globe. Although some efforts have been made to reduce the impact of the pandemic, more research and innovation is required. </p>

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          Cardiac and arrhythmic complications in patients with COVID‐19

          Abstract In December 2019, the world started to face a new pandemic situation, the severe acute respiratory syndrome‐coronavirus 2 (SARS‐CoV‐2). Although coronavirus disease (COVID‐19) clinical manifestations are mainly respiratory, major cardiac complications are being reported. Cardiac manifestations etiology seems to be multifactorial, comprising direct viral myocardial damage, hypoxia, hypotension, enhanced inflammatory status, ACE2‐receptors downregulation, drug toxicity, endogenous catecholamine adrenergic status, among others. Studies evaluating patients with COVID‐19 presenting cardiac injury markers show that it is associated with poorer outcomes, and arrhythmic events are not uncommon. Besides, drugs currently used to treat the COVID‐19 are known to prolong the QT interval and can have a proarrhythmic propensity. This review focus on COVID‐19 cardiac and arrhythmic manifestations and, in parallel, makes an appraisal of other virus epidemics as SARS‐CoV, Middle East respiratory syndrome coronavirus, and H1N1 influenza.
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            Pathological features of COVID-19-associated myocardial injury: a multicentre cardiovascular pathology study

            Abstract Aims Coronavirus disease 2019 (COVID-19) due to severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) has been associated with cardiovascular features of myocardial involvement including elevated serum troponin levels and acute heart failure with reduced ejection fraction. The cardiac pathological changes in these patients with COVID-19 have yet to be well described. Methods and results In an international multicentre study, cardiac tissue from the autopsies of 21 consecutive COVID-19 patients was assessed by cardiovascular pathologists. The presence of myocarditis, as defined by the presence of multiple foci of inflammation with associated myocyte injury, was determined, and the inflammatory cell composition analysed by immunohistochemistry. Other forms of acute myocyte injury and inflammation were also described, as well as coronary artery, endocardium, and pericardium involvement. Lymphocytic myocarditis was present in 3 (14%) of the cases. In two of these cases, the T lymphocytes were CD4 predominant and in one case the T lymphocytes were CD8 predominant. Increased interstitial macrophage infiltration was present in 18 (86%) of the cases. A mild pericarditis was present in four cases. Acute myocyte injury in the right ventricle, most probably due to strain/overload, was present in four cases. There was a non-significant trend toward higher serum troponin levels in the patients with myocarditis compared with those without myocarditis. Disrupted coronary artery plaques, coronary artery aneurysms, and large pulmonary emboli were not identified. Conclusions In SARS-CoV-2 there are increased interstitial macrophages in a majority of the cases and multifocal lymphocytic myocarditis in a small fraction of the cases. Other forms of myocardial injury are also present in these patients. The macrophage infiltration may reflect underlying diseases rather than COVID-19.
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              Characterization of Myocardial Injury in Patients With COVID-19

              Background Myocardial injury is frequent among patients hospitalized with coronavirus disease-2019 (COVID-19) and is associated with a poor prognosis. However, the mechanisms of myocardial injury remain unclear and prior studies have not reported cardiovascular imaging data. Objectives This study sought to characterize the echocardiographic abnormalities associated with myocardial injury and their prognostic impact in patients with COVID-19. Methods We conducted an international, multicenter cohort study including 7 hospitals in New York City and Milan of hospitalized patients with laboratory-confirmed COVID-19 who had undergone transthoracic echocardiographic (TTE) and electrocardiographic evaluation during their index hospitalization. Myocardial injury was defined as any elevation in cardiac troponin at the time of clinical presentation or during the hospitalization. Results A total of 305 patients were included. Mean age was 63 years and 205 patients (67.2%) were male. Overall, myocardial injury was observed in 190 patients (62.3%). Compared with patients without myocardial injury, those with myocardial injury had more electrocardiographic abnormalities, higher inflammatory biomarkers and an increased prevalence of major echocardiographic abnormalities that included left ventricular wall motion abnormalities, global left ventricular dysfunction, left ventricular diastolic dysfunction grade II or III, right ventricular dysfunction and pericardial effusions. Rates of in-hospital mortality were 5.2%, 18.6%, and 31.7% in patients without myocardial injury, with myocardial injury without TTE abnormalities, and with myocardial injury and TTE abnormalities. Following multivariable adjustment, myocardial injury with TTE abnormalities was associated with higher risk of death but not myocardial injury without TTE abnormalities. Conclusions Among patients with COVID-19 who underwent TTE, cardiac structural abnormalities were present in nearly two-thirds of patients with myocardial injury. Myocardial injury was associated with increased in-hospital mortality particularly if echocardiographic abnormalities were present.
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                Author and article information

                Contributors
                (View ORCID Profile)
                Journal
                Journal of Cardiac Surgery
                J Card Surg
                Wiley
                0886-0440
                1540-8191
                June 16 2021
                Affiliations
                [1 ]Department of Internal Medicine Ziauddin Medical University Karachi Pakistan
                [2 ]Department of Internal Medicine Dow Medical College, Dow University of Health Sciences Karachi Pakistan
                [3 ]Department of General Surgery Dow Medical College, Dow University of Health Sciences Karachi Pakistan
                Article
                10.1111/jocs.15746
                9c9decaa-229c-4725-8953-8e9f1b5afcda
                © 2021

                http://onlinelibrary.wiley.com/termsAndConditions#vor

                http://doi.wiley.com/10.1002/tdm_license_1.1

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