Effect of Face Masks on Pulmonary Function in Patients With COPD

Since COPD patients are at higher risk for severe illness in case of SARS-CoV-2-infection, precautions such as wearing masks are important for them. However, for this group of patients wearing a mask can lead to increased shortness of breath and discomfort. Aim of this study is to examine the impact of wearing a face mask during 6-Minute-Walking-Tests (6-MWT) in COPD patients.

Chronic obstructive pulmonary disease (COPD) is a common disease among smokers and former smokers. Patients with COPD have an increased mortality risk when infected by the SARS-CoV-2 virus. Therefore face-masks are often recommended as a preventive method. However, shortness of breath is the leading symptom in this patient group. Furthermore, no data regarding blood oxygenation while wearing different kinds of face-masks is available. In the present study we will investigate patients with COPD, wearing two different face-masks, while performing a 6-minutes-walking-test (6MWT). I summary three 6MWTs will be performed: without a mask, with a simple face-mask, with a FFP2 mask. Prior to the 6 minute walking test, a pulmonary function test with spirometry, bodyplethysmography and CO-Diffusion capacity measurement will be performed. Additionally capillary blood gas analysis will be performed prior to the 6MWT and following each test.

Inclusion Criteria: COPD Diagnosis Vaccinated against SARS-CoV 2 Exclusion Criteria: Known cardial insufficency Long term oxgenation therapy immobility BMI >35 Pregnancy