1. Bronchodilator Response in Post-COVID-19 Patients Undergoing Pulmonary Rehabilitation.
- Author
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Krooss, Simon Alexander, Klefenz, Isabel, Ott, Michael, Klawonn, Frank, Leitl, Daniela, Schneeberger, Tessa, Jarosch, Inga, Vogelmeier, Claus Franz, Lommatzsch, Marek, Gloeckl, Rainer, and Koczulla, Andreas Rembert
- Subjects
PULMONARY function tests ,VITAL capacity (Respiration) ,POST-acute COVID-19 syndrome ,ADRENERGIC beta agonists ,DESCRIPTIVE statistics ,LUNGS ,VIRAL pneumonia ,REHABILITATION centers ,LUNG diseases ,MEDICAL rehabilitation ,DRUG efficacy ,OBSTRUCTIVE lung diseases ,FORCED expiratory volume ,RESPIRATORY measurements ,RESEARCH methodology ,CASE-control method ,DYSPNEA ,DATA analysis software ,BRONCHODILATOR agents ,COMORBIDITY - Abstract
Introduction: SARS-CoV-2 infections can result in a broad spectrum of symptoms from mild to life-threatening. Long-term consequences on lung function are not well understood yet. Methods: In our study, we have examined 134 post-COVID patients (aged 54.83 ± 14.4 years) with dyspnea on exertion as a leading symptom 6 weeks to 24 months after a SARS-CoV-2 infection for bronchodilator responsiveness during their stay in our pulmonary rehabilitation clinic. Results: Prior to bronchial dilation, 6 out of 134 patients (4.47%) presented an FEV
1 /FVC ratio below lower limit of normal (Z-score = −1.645) indicative of an obstructive airway disease. Following inhalation of a β2-adrenergic agonist we measured a mean FEV1 increase of 181.5 mL in our cohort, which was significantly elevated compared to a historical control group (ΔFEV1 = 118 mL). 28.7% of the patients showed an increase greater than 200 mL and 12% displayed a significant bronchodilation response (>200 mL ΔFEV1 and >12% FEV1 increase). Interestingly, no significant difference in bronchial dilation effect was observed when comparing patients hospitalized and those non-hospitalized during the course of their SARS-CoV-2 infection. Conclusion: Our data provide evidence for increased prevalence of obstructive ventilatory defects and increased bronchodilator responsiveness in patients with persisting symptoms after COVID-19. Depending on the extent of this complication, post-COVID patients may benefit from an adapted β2-inhalation therapy including subsequent reevaluation. [ABSTRACT FROM AUTHOR]- Published
- 2024
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