Study: NCT05009758

Intervention type: OTHER
Group type: ACTIVE_COMPARATOR
Intervention: Medical history of patients, demographic data, concomitant medication, questionnaire
Description: Patients will be asked for their medical history including demographic data and concomitant medication. Details will be noted in the source data file. Furthermore, patients will receive a questionnaire including tools to assess QOL impairment by CRS and asthma

Intervention type: OTHER
Group type: ACTIVE_COMPARATOR
Intervention: Medical history of patients, demographic data, concomitant medication, questionnaire
Description: Patients will be asked for their medical history including demographic data and concomitant medication. Details will be noted in the source data file. Furthermore, patients will receive a questionnaire including tools to assess QOL impairment by CRS and asthma

Intervention type: DIAGNOSTIC_TEST
Group type: ACTIVE_COMPARATOR
Intervention: UPSIT smell test
Description: University of Pennsylvania Smell Identification Test (UPSIT) smell test will be performed by the patients during the study. It consists of 40 questions in 4 different booklets. The patient needs to scratch a sniff strip with the microencapsulated odorant using a pencil and mark his choice on four-choice multiple-choice questions. The test is then scored by the study team out of the 40 items.

Intervention type: DIAGNOSTIC_TEST
Group type: ACTIVE_COMPARATOR
Intervention: UPSIT smell test
Description: University of Pennsylvania Smell Identification Test (UPSIT) smell test will be performed by the patients during the study. It consists of 40 questions in 4 different booklets. The patient needs to scratch a sniff strip with the microencapsulated odorant using a pencil and mark his choice on four-choice multiple-choice questions. The test is then scored by the study team out of the 40 items.

Intervention type: DIAGNOSTIC_TEST
Group type: ACTIVE_COMPARATOR
Intervention: UPSIT smell test
Description: University of Pennsylvania Smell Identification Test (UPSIT) smell test will be performed by the patients during the study. It consists of 40 questions in 4 different booklets. The patient needs to scratch a sniff strip with the microencapsulated odorant using a pencil and mark his choice on four-choice multiple-choice questions. The test is then scored by the study team out of the 40 items.

Intervention type: PROCEDURE
Group type: ACTIVE_COMPARATOR
Intervention: Spirometry
Description: Lung function will be measured by spirometry in the lung function unit of the Department of Pulmonology. Spirometry will be performed according to American Thoracic Society/European Respiratory Society (ATS/ERS) guidelines by authorized and properly certified personal.

Intervention type: PROCEDURE
Group type: ACTIVE_COMPARATOR
Intervention: Spirometry
Description: Lung function will be measured by spirometry in the lung function unit of the Department of Pulmonology. Spirometry will be performed according to American Thoracic Society/European Respiratory Society (ATS/ERS) guidelines by authorized and properly certified personal.

Intervention type: PROCEDURE
Group type: ACTIVE_COMPARATOR
Intervention: Spirometry
Description: Lung function will be measured by spirometry in the lung function unit of the Department of Pulmonology. Spirometry will be performed according to American Thoracic Society/European Respiratory Society (ATS/ERS) guidelines by authorized and properly certified personal.

Intervention type: PROCEDURE
Group type: ACTIVE_COMPARATOR
Intervention: FeNO
Description: Airway inflammation will be evaluated using a standardized single-breath FeNO test in accordance with the lung function unit of the Department of Pulmonology. A single exhalation technique recommended by the manufacturer will be followed. The FeNO measurements will not be performed within 2 weeks of a respiratory infection. The FeNO test will be performed prior to spirometry. Subjects should not eat or drink 1 hour prior to having the FeNO test. Subjects should not use their rescue SABA medication (e.g., albuterol/salbutamol) within 6 hours of the measurement. Inhaled bronchodilators (including ICS/LABA) should be withheld for the effect duration specific to the bronchodilator. If not, the assessment should be postponed till after the required time has passed since the meal or drink or bronchodilator inhalation. The NIOX VERO® Airway Inflammation Monitor will be used to measured FeNO in the lung function unit of the Department of Pulmonology.

Intervention type: PROCEDURE
Group type: ACTIVE_COMPARATOR
Intervention: FeNO
Description: Airway inflammation will be evaluated using a standardized single-breath FeNO test in accordance with the lung function unit of the Department of Pulmonology. A single exhalation technique recommended by the manufacturer will be followed. The FeNO measurements will not be performed within 2 weeks of a respiratory infection. The FeNO test will be performed prior to spirometry. Subjects should not eat or drink 1 hour prior to having the FeNO test. Subjects should not use their rescue SABA medication (e.g., albuterol/salbutamol) within 6 hours of the measurement. Inhaled bronchodilators (including ICS/LABA) should be withheld for the effect duration specific to the bronchodilator. If not, the assessment should be postponed till after the required time has passed since the meal or drink or bronchodilator inhalation. The NIOX VERO® Airway Inflammation Monitor will be used to measured FeNO in the lung function unit of the Department of Pulmonology.

Intervention type: PROCEDURE
Group type: ACTIVE_COMPARATOR
Intervention: FeNO
Description: Airway inflammation will be evaluated using a standardized single-breath FeNO test in accordance with the lung function unit of the Department of Pulmonology. A single exhalation technique recommended by the manufacturer will be followed. The FeNO measurements will not be performed within 2 weeks of a respiratory infection. The FeNO test will be performed prior to spirometry. Subjects should not eat or drink 1 hour prior to having the FeNO test. Subjects should not use their rescue SABA medication (e.g., albuterol/salbutamol) within 6 hours of the measurement. Inhaled bronchodilators (including ICS/LABA) should be withheld for the effect duration specific to the bronchodilator. If not, the assessment should be postponed till after the required time has passed since the meal or drink or bronchodilator inhalation. The NIOX VERO® Airway Inflammation Monitor will be used to measured FeNO in the lung function unit of the Department of Pulmonology.

Intervention type: PROCEDURE
Group type: ACTIVE_COMPARATOR
Intervention: Lung X-Ray
Description: After the bronchoscopy, a lung x-ray will be performed and patients will stay overnight in the ward of the Department of Pulmonology.

Intervention type: PROCEDURE
Group type: ACTIVE_COMPARATOR
Intervention: Lung X-Ray
Description: After the bronchoscopy, a lung x-ray will be performed and patients will stay overnight in the ward of the Department of Pulmonology.

Intervention type: PROCEDURE
Group type: ACTIVE_COMPARATOR
Intervention: Lung X-Ray
Description: After the bronchoscopy, a lung x-ray will be performed and patients will stay overnight in the ward of the Department of Pulmonology.