Résumé
ABSTRACT This brief communication demonstrates the correlation of persistent respiratory symptoms with functional, tomographic, and transbronchial pulmonary biopsy findings in patients with COVID-19 who had a long follow-up period. We report a series of six COVID-19 patients with pulmonary involvement who presented with persistent dyspnea within 4-15 months of discharge. We performed transbronchial biopsies, and the histopathological pattern consistently demonstrated peribronchial remodeling with interstitial pulmonary fibrosis. Therefore, lung biopsy may be useful in the approach of patients with long COVID-19, although the type of procedure, its precise indication, and the moment to perform it are yet to be clarified. (Brazilian Registry of Clinical Trials-ReBEC; identifier: RBR-8j9kqy [http://www.ensaiosclinicos.gov.br])
RESUMO Esta comunicação breve demonstra a correlação de sintomas respiratórios persistentes com achados funcionais, tomográficos e de biópsia pulmonar transbrônquica em pacientes com COVID-19 que tiveram um longo período de acompanhamento. Relatamos uma série de seis pacientes com COVID-19 com acometimento pulmonar que apresentavam dispneia persistente após 4-15 meses da alta. Realizamos biópsias transbrônquicas, e o padrão histopatológico consistentemente demonstrou remodelação peribrônquica com fibrose pulmonar intersticial. Portanto, a biópsia pulmonar pode ser útil na abordagem de pacientes com COVID-19 prolongada, embora o tipo de procedimento, suas indicações precisas e o momento de sua realização ainda não estejam esclarecidos. (Registro Brasileiro de Ensaios Clínicos - ReBEC; número de identificação: RBR-8j9kqy [http://www.ensaiosclinicos.gov.br])
Résumé
A new concept of multisystem disease has emerged as a long-term condition following mild-severe COVID-19 infection. The main symptoms of this affection are breathlessness, chest pain, and fatigue. We present here the clinical case of four COVID-19 patients during hospitalization and 60 days after hospital discharge. Physiological impairment of all patients was assessed by spirometry, dyspnea score, arterial blood gas, and 6-minute walk test 60 days after hospital discharge, and computed tomographic scan 90 days after discharge. All patients had fatigue, which was not related to hypoxemia or impaired spirometry values, and interstitial lung alterations, which occurred in both mechanically ventilated and non-mechanically ventilated patients. In conclusion, identifying the prevalence and patterns of permanent lung damage is paramount in preventing and treating COVID-19-induced fibrotic lung disease. Additionally, and based on our preliminary results, it will be also relevant to establish long-term outpatient programs for these individuals.