Differentiation of Upper and Lower Respiratory Tract Infections Using Automated Lung Sound Analysis With LungPass Device

Study Overview
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Brief Summary
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This observational study evaluates whether lung sound analysis with LungPass device can be used to differentiate upper and lower respiratory tract infections (URTI and LRTI)

Detailed Description
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This is a prospective observational study comprised patients presenting with acute respiratory tract infection symptoms in primary care settings. Patients will undergo routine clinical examination including lung auscultation with conventional stethoscope and LungPass device. Moreover, symptoms and anamnesis data, result of diagnostic questionnaire from the LungPass App, complete blood count, C-reactive protein, procalcitonin (PCT) level, SARS-CoV-2 PCR test and X-ray chest examination or CT chest (in case of preliminary clinical suspicion of LRTI). Patients will be followed up within 5-7 days and at the end of the disease in person or by phone for clinical course of the disease assessment to confirm the final diagnosis (URTI or LRTI). Final diagnosis will be considered as Gold standard for accuracy assessment.

Official Title
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Differentiation of Upper and Lower Respiratory Tract Infections Using Automated Lung Sound Analysis With LungPass Device

Conditions
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Acute Respiratory Tract Infection

Intervention / Treatment
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* Device: Lung auscultation with LungPass device (electronic auscultation)


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Adults (over 18 years) and children (3-18 years) of both sexes; Patients able and willing to sign an informed consent to participate in the study (parents of children younger than 18 years old will be allowed to give an informed consent on behalf of their children). Patients presenting with a new onset of at least two of listed acute respiratory tract infection symptoms within the last 5 days: cough, purulent sputum, breathlessness, core temperature above 38°C. Patients who first visit a GP with these symptoms within the first 5 days from the onset of symptoms and was not previously treated with antibiotics during the last month. Exclusion Criteria: Age up to 3 years; Patient refusal to participate in the study (or patients' parents); Children under full State care (orphans, children left without parental care); Treatment with antibiotics during the last month; Patients with subcutaneous emphysema, with damaged skin on the surface of the chest, with drainage in the pleural space, patients undergoing mechanical ventilation; Presence of other known chronic lung conditions such as asthma, COPD, tuberculosis, cystic fibrosis or bronchiectasis; Mental illness, other known acute diseases or known chronic decompensated diseases, such as a known active malignancy or severe heart failure. Other known ongoing infection.

Ages Eligible for Study
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Minimum Age: 3 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Intervention/Treatment |
| --- |
|Device: Lung auscultation with LungPass device (electronic auscultation)|Lung auscultation with electronic stethoscope|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Accuracy of identifying LRTI by abnormal lung sounds | Accuracy of differentiation between ULRTI and LRTI by abnormal lung sounds detected with LungPass device | 16.11.2021- 30.11.2021 | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Accuracy of identifying LRTI by abnormal lung sounds in subgroups with COVID-19 and non-COVID-19 LRTI | Accuracy of differentiation between ULRTI and LRTI by abnormal lung sounds detected with LungPass device in subgroups with COVID-19 and non-COVID-19 LRTI | 16.11.2021- 30.11.2021 | 
| Lung sounds and clinical signs of LRTI correlation in patients with LRTI | Correlation between presence of pathological pulmonary sounds detected with LungPass device and presence of clinical signs of LRTI (clinical parameters/radiology results) in patients with LRTI | 16.11.2021- 30.11.2021 | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Lung sound analysis, Upper Respiratory Truct Infections, Lower Respiratory Truct Infections