RT Journal Article SR Electronic T1 Clinical outcome of COVID-19 in patients with adult congenital heart disease JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 1226 OP 1232 DO 10.1136/heartjnl-2020-318467 VO 107 IS 15 A1 Schwerzmann, Markus A1 Ruperti-Repilado, Francisco Javier A1 Baumgartner, Helmut A1 Bouma, Berto A1 Bouchardy, Judith A1 Budts, Werner A1 Campens, Laurence A1 Chessa, Massimo A1 del Cerro Marin, Maria Jesús A1 Gabriel, Harald A1 Gallego, Pastora A1 Garcia-Orta, Rocio A1 Gonzalez, Ana Elvira A1 Jensen, Annette Schophuus A1 Ladouceur, Magalie A1 Miranda-Barrio, Berta A1 Morissens, Marielle A1 Pasquet, Agnes A1 Rueda, Joaquín A1 van den Bosch, Annemien E A1 van der Zwaan, Heleen Berdina A1 Tobler, Daniel A1 Greutmann, Matthias A1 YR 2021 UL http://heart.bmj.com/content/107/15/1226.abstract AB Aims Patients with adult congenital heart disease (ACHD) are a potentially vulnerable patient cohort in case of COVID-19. Some cardiac defects may be associated with a poor COVID-19 outcome. Risk estimation in ACHD is currently based on expert opinion. The aim of this study was to collect clinical outcome data and to identify risk factors for a complicated course of COVID-19 in patients with ACHD.Methods Twenty-five ACHD centres in nine European countries participated in the study. Consecutive patients with ACHD diagnosed with COVID-19 presenting to one of the participating centres between 27 March and 6 June 2020 were included. A complicated disease course was defined as hospitalisation for COVID-19 requiring non-invasive or invasive ventilation and/or inotropic support, or a fatal outcome.Results Of 105 patients with a mean age of 38±13 years (58% women), 13 had a complicated disease course, of whom 5 died. In univariable analysis, age (OR 1.3, 95% CI 1.1 to 1.7, per 5 years), ≥2 comorbidities (OR 7.1, 95% CI 2.1 to 24.5), body mass index of >25 kg/m2 (OR 7.2, 95% CI 1.9 to 28.3) and cyanotic heart disease (OR 13.2, 95% CI 2.5 to 68.4) were associated with a complicated disease course. In a multivariable logistic regression model, cyanotic heart disease was the most important predictor (OR 60.0, 95% CI 7.6 to 474.0).Conclusions Among patients with ACHD, general risk factors (age, obesity and multiple comorbidities) are associated with an increased risk of complicated COVID-19 course. Congenital cardiac defects at particularly high risk were cyanotic lesions, including unrepaired cyanotic defects or Eisenmenger syndrome.Data are available upon reasonable request.