An interventional study of Digital lung auscultation and Pulse oximetry measurement in Respiratory Diseases, Pneumonia and Asthma, sponsored by Pediatric Clinical Research Platform. Recruiting at 1 site in Switzerland. Open to participants aged 1 Year and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2024-07-03.
Sponsored by Pediatric Clinical Research Platform · Not applicable, Interventional, and Other
Respiratory diseases are associated with high morbidity and mortality worldwide. Proper diagnosis and risk assessment of these conditions are essential for optimal management. Clinicians use three particularly useful tools to identify these conditions when assessing the patient's status: the stethoscope, the pulse oximeter, and the thermometer. The Pneumoscope is an all-in-one device including a digital stethoscope, a pulse oximeter, and a thermometer. This study aims to assess the performance and safety of the Pneumoscope in recording respiratory sounds, body temperature, non-invasive blood oxygen saturation levels and heart rate in children and adults.
Respiratory diseases affect over 500 million people globally, ranking third in causes of death. Chronic obstructive pulmonary diseases impact 251 million individuals due to air pollution and tobacco smoke. Asthma is the most prevalent chronic disease in children, while pneumonia is the leading cause of death in children under 5. Respiratory infections are prominent in pediatric outpatient clinics, especially in low- and middle-income countries. Accurate diagnosis and risk assessment are crucial for effective management. Clinicians utilize three key tools: the stethoscope for auscultation, detecting abnormal breathing sounds; the pulse oximeter, indicating oxygen deficiency in inflamed lungs; and the thermometer, primarily for fever-related infections like pneumonia. Auscultation, while quick and non-invasive, suffers from user-dependent subjective interpretation, as highlighted by studies reporting low correct response rates, especially among non-pulmonologists. Pulmonary auscultation's sensitivity and specificity are notably low, particularly in unilateral or focal changes. Pulse oximetry, utilizing harmless light wavelengths, measures oxygenated hemoglobin concentration, with a saturation below 92% indicating hypoxia, albeit with reduced accuracy below 90%. Thermometers measure body temperature, with rectal measurement considered the gold standard in children, although non-contact methods remain contentious
The use of the Pneumoscope, a digital medical device, could address the above challenge. The Pneumoscope is designed to enhance respiratory disease diagnosis and provide heart rate, respiratory rate, pulse oximetry, and body temperature data. This project aims to evaluate its performance against gold standards in lung sound processing, pulse oximetry, and body temperature measurement. Furthermore, the Pneumoscope is envisioned to integrate artificial intelligence (AI) for future applications. Data on breath sounds, oximetry, heart rate, and temperature from patients with respiratory diseases will inform AI algorithms for disease recognition and risk assessment. Ultimately, this technology could enable remote diagnosis and follow-up, particularly beneficial for patients in low- and middle-income countries or with limited mobility. However, the current study focuses solely on assessing the Pneumoscope's performance as a standard digital stethoscope with integrated temperature and oximetry sensors, aiming to establish agreement with established clinical tools for digital lung auscultation, pulse oximetry, heart rate, and body temperature measurement.
This is a single center, open, non-controlled investigation that will be conducted at the University Hospitals of Geneva, Switzerland. This will be a non-inferiority study between Pneumoscope and CE marked comparable medical devices in children and adults.
617 studies on the registry are indexed under Respiratory Tract Diseases; 111 are open to participants now.
This study's planned enrollment of 225 is above the median of 80 across 381 interventional studies indexed under Respiratory Tract Diseases.
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Patients will be recruited from the pediatric and adult clinical departments of the Geneva University Hospitals.
Inclusion Criteria:
Exclusion Criteria:
Patients with various respiratory conditions, such as asthma or pneumonia, along with healthy individuals, will be targeted to assess the Pneumoscope's performance under clinical conditions. Additionally, patients with lower blood oxygen saturation levels, such as those with cyanotic heart defects like tetralogy of Fallot, will also be included
Device: Digital lung auscultation · Device: Pulse oximetry measurement · Device: Non invasive body temperature measurement
Two 30-second recordings will be made using CE-marked Littmann® CORE digital stethoscopes and the Pneumoscope at two bilateral lung positions on the posterior chest wall, focusing on the lower lobes. Spectral comparison and audio quality indices will be assessed between the Pneumoscope and the Littmann® CORE digital stethoscope. Comparator: The Gold Standard Littmann® CORE picks up sounds, such as heart and lung sounds, from a patient's body. After amplification and filtering, the sounds are sent to the user through a binaural headset. The stethoscope chest piece is designed for use with adult, pediatric, and infant patients.
Pulse oximetry and heart rate will be measured using the CE-marked Masimo Rad-G® and iHealth® Air oximeters, as well as the Pneumoscope's built-in oximeter. Agreement between the Pneumoscope's oximeter and the reference oximeters will be evaluated. Measurement will take 30 second on the right index finger. Comparators: 1. The Gold Standard Masimo Rad-G® sensor is indicated for the continuous noninvasive peripheral monitoring of arterial oxygen saturation (SpO2) and pulse rate. Its use consists in positioning the emitting window of the sensor attachment envelope on the top of the finger nail bed, while the detector is placed opposite the emitter on the other side of the same finger. 2. The Gold Standard iHealth® Air works by projecting two beams of light through a clip with a transmitter and a detector that is placed around a finger, nail side down and screen side up.
Also known as: Oximeters
Comparison of body temperature measurements between the Pneumoscope's built-in thermometer and Gold Standard thermometers (Terumo® C205 and VisioFocus Pro 06480). Comparators: 1. The Gold Standard Terumo® C205 is an axillary thermometer. Its use consists in placing the probe in the armpit, then lowering the arm and holding the device firmly until the temperature is stabilised and the temperature is read and displayed on the thermometer screen. 2. The Gold Standard VisioFocus Pro 06480 is an infrared thermometer that detects the infrared radiation naturally emitted by the body and in particular from the human forehead. Its use consists in holding the thermometer close to the forehead but without direct contact with the skin. The temperature reading is then projected on the patient's forehead using a symbol system.
Also known as: Thermometers
Evaluation of Pneumoscope's built-in sensors
To be used in patients and certified by competent authorities the performance of Pneumoscope has to be at least equal as comparable devices on the market. Performances of digital audio quality, as well as pulse oximetry, heart rate and temperature measurements by the Pneumoscope will be compared to CE certified similar medical devices used as gold-standards tools. Hence, the primary objective is to evaluate whether the three built-in sensors into the Pneumoscope are equivalent to CE marked Gold Standards: 1. Spectral comparison and other audio quality indices of recordings with the Pneumoscope and a commercially available digital stethoscope (Littmann® CORE digital stethoscope). 2. Agreement between the Pneumoscope thermometer and reference thermometers (Terumo® C205 and VisioFocus Pro® 06480). 3. Agreement between the Pneumoscope pulse oximeter (for blood oxygen saturation and heart rate) and reference oximeters (Masimo Rad-G® and iHealth® Air).
Time frame: During procedure, i.e. 20 minutes per patient for both out- and inpatients.
Collect audio records of lung sounds for AI models training and sensor calibration
The collected anonymised audio records of lung sounds will be used in the future to develop and validate AI algorithms for various bronchopulmonary diseases in children (pneumonia, asthma, bronchiolitis), as well as SARS-CoV-2 infections in adults.
Time frame: During procedure, i.e. 20 minutes per patient for both out- and inpatients.
Pulse oximetry
The collected pulse oximetry measures will be used to calibrate the oximeter sensor.
Time frame: During procedure, i.e. 20 minutes per patient for both out- and inpatients.
Body temperature
The collected, non-invasive, body temperature measures will be used to calibrate the thermometer sensor.
Time frame: During procedure, i.e. 20 minutes per patient for both out- and inpatients.
Plan to share: Yes — * Data types: Deidentified participant data. The final database will be shared on a non-commercial repository following the FAIR data principles. * How to access data: contact the principal investigator Dr Johan N. Siebert at: Johan.Siebert@hcuge.ch * When available: beginning 6 months and ending 10 years following article(s) publication.
Supporting information: Study protocol, Sap
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