Accuracy of Spircare Device as Compared to the Conventional Plethysmograph

Phase I Health subjects without respiratory system disease.

Phase II Subjects which are referred to a Pulmonary Functional Testing in the Meir pulmonary unit.

Inclusion Criteria:

1. Signed Informed consent.
2. Age≥18 year.
3. Subject is cooperative and capable of following instructions.
4. Phase I: Healthy asymptomatic subjects, never smokers without known history of respiratory, cardiovascular, hepatic, renal or metabolic disease.

5. Phase II: Chronic pulmonary patients with lung volume disorders:

   • COPD
   • Asthma
   • Restrictive diseases such as pulmonary fibrosis, other interstitial lung diseases, kyphoscoliosis, neuro-muscular disorders.

Exclusion Criteria:

1. Subjects unable or unwilling to give informed consent.
2. Subjects who are unable to satisfactorily perform routine, full lung function testing (due to non-compliance or claustrophobia).
3. History suggesting upper respiratory infection during the four weeks prior to testing
4. Physical activity during 1 hour prior to the Study.
5. Patients with a tracheostomy.
6. Pregnant women.