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A 46-year-old woman presented for a routine echocardiogram, which revealed a giant atrial septal aneurysm (ASA) with an atrial septal defect (ASD). We surgically excised the ASA and closed the ASD with a pericardial patch. ASA, although rare, poses embolic risks, thus necessitating closure when associated with shunts. Optimal stroke prevention remains uncertain., Competing Interests: The authors have reported that they have no relationships relevant to the contents of this paper to disclose., (© 2024 The Authors.)

Objectives: To evaluate the effectiveness of a care pathway (Spanish acronym, COVID-A2R) through which patients with SARS-CoV-2 infection were referred by a hospital emergency department (ED) for fast-track in-person outpatient clinic care if they did not have respiratory insufficiency but were at high risk for complications and poor outcome., Material and Methods: Retrospective cohort of patients referred to the COVID-A2R pathway after being diagnosed with COVID-19 by reverse transcription polymerase chain reaction assay in a tertiary care hospital ED between January 7 and February 17, 2021. The inclusion criteria were 1) absence of pneumonia but presence of serious comorbidity and/or elevated biomarkers of inflammation, and 2) pneumonia with or without elevated inflammatory markers but without respiratory insufficiency. The main outcome was need for an emergency department revisit with hospital admission and time from ED evaluation to hospitalization. Secondary outcomes were the number of COVID-A2R visits and the potential economic impact., Results: We included 278 patients with a median age of 57 years (57.9% men) and a median Charlson Comorbidity Index of 1. The median time since onset of symptoms was 7 days (interquartile range, 4-11 days). Pneumonia was diagnosed in 71.8%, and 64.7% required only 1 in-person visit in the COVID-A2R pathway. No revisits to the ED were needed by 87.8% (83.4%-91.1%) of the patients. Of the 34 patients who were hospitalized, 88.2% were admitted within 5 days. The COVID-A2R model potentially saved 1708 days of hospitalization., Conclusion: The fast-track ambulatory care model was effective after emergency department discharge of patients with COVID-19 without respiratory insufficiency but with clinical or laboratory indicators of risk for poor outcome.

Background: Platypnoea-orthodeoxia syndrome (POS) is a rare condition characterized by hypoxaemia and dyspnoea when changing from a recumbent to an upright position. Diagnosis requires a high clinical suspicion and is often underdiagnosed., Case Summary: We report a case of POS in a 50-year-old woman with dyspnoea and new-onset atrial fibrillation. Oxygen saturation and dyspnoea worsened as she changed from a supine to a sitting position (96 vs. 86%, respectively). Transoesophageal echocardiography demonstrated enlargement of both atria and right ventricle with reduced systolic function and a large Chiari network (CN). Colour Doppler discovered severe tricuspid regurgitation with tenting and tethering of the valve leaflets. Finally, a bubble test revealed the cause of POS to be a patent foramen ovale along with the severe tricuspid regurgitant jet moving into the left atrium and favoured by the CN. Surgical closure of the foramen ovale resulted in the resolution of symptoms., Discussion: Platypnoea-orthodeoxia syndrome is most commonly caused by a right-to-left shunt through an anatomical defect of the interatrial septum, typically a patent foramen ovale, combined with elevated right atrium pressure. This case illustrates an uncommon cause of POS in the absence of elevated atrium pressure due to the interplay of three key elements: a patent foramen ovale, tricuspid regurgitation, and the CN. Our aim is to alert physicians to the possibility of an intracardiac shunt as the cause of unexplained and/or refractory hypoxaemia related to position changes. Early recognition of this syndrome promotes timely treatment, greatly improving patient outcomes., (© The Author(s) 2021. Published by Oxford University Press on behalf of the European Society of Cardiology.)