New breathing monitor could help doctors spot lung trouble faster

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Age 18+, fluent knowledge of English or German. * Group A: Obstructive ventilatory disorders (conditions resulting in an increased load on the respiratory muscle pump due to hyperinflation ± pronounced hypoxaemia) * Acute exacerbation of COPD (pronounced hypoxia OR acute or acute on chronic hypercapnic respiratory failure) * Exacerbation of asthma bronchiale * Exacerbation of non-CF-bronchiectasis (infectious) * Infectious exacerbation of lung disease in cystic fibrosis * Group B: Conditions with an increase in NRD due to an impairment in gas exchange (particularly die to diffusion limitation and/or ventilation-perfusion-mismatch * Exacerbation of an interstitial lung disease (e.g. Idiopathic pulmonary fibrosis (IPF), Non Specific Interstitial Pneumonia (NSIP), Connective tissue disease- associated interstitial lung disease CTD-ILD) * Worsening of pulmonary arterial hypertension World Health Organisation (WHO) group 1 (e.g. due decompensated heart failure) * Acute pulmonary embolism * Pneumonia (resulting in hypoxaemia) Exclusion Criteria: * Obesity hypoventilation syndrome (rationale: NRD decreased) * Obesity WHO III with Body Mass Index (BMI) \> 40 kg/m2 (rationale: surface EMG signal quality low) * Hypercapnic respiratory failure due to hypoventilation of central origin, e.g. opiate-induced, Congenital central hypoventilation syndrome, post stroke (rationale: central respiratory control affected) * Neuromuscular disease affecting respiratory muscles, e.g. motor neurone disease, muscular dystrophy type Duchenne etc. (rationale: EMG signal quality etc. different) * Decompensated heart failure with atrial fibrillation (rationale: central breathing disturbance common) * Patients on chronic opioid therapy (e.g. chronic pain, methadone etc.) (rationale: reduced NRD) * Self reported pregnancy