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30-day Spirometry Holter method design and prospective observational study.

Piotr Korczyński1, Mikołaj Basza2,3, Katarzyna Górska1

  • 1Department of Internal Medicine, Pulmonary Diseases and Allergy, Medical University of Warsaw, Warsaw, Poland.

Scientific Reports
|November 1, 2024
PubMed
Summary
This summary is machine-generated.

This study introduces a novel digital spirometry tool to aid asthma diagnosis by objectively monitoring airway obstruction and variability. The "Spirometry Holter" shows promise for improving diagnosis in patients without prior confirmed obstruction.

Keywords:
AsthmaDiagnostic toolHome monitoringHome spirometryPulmonary function testingSpirometry

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Area of Science:

  • Pulmonology
  • Medical Devices
  • Digital Health

Background:

  • Asthma diagnosis is challenged by underdiagnosis and overdiagnosis, highlighting limitations in current guidelines and methods.
  • Objective diagnostic support is crucial for accurate asthma identification and management.

Purpose of the Study:

  • To introduce and evaluate a novel spirometry-based approach using digital tools for objective asthma diagnosis support.
  • To assess the feasibility and effectiveness of a portable spirometer system for monitoring airway limitation variability.

Main Methods:

  • A prospective cohort study involving adults with suspected asthma but no confirmed obstruction.
  • Patients used a portable spirometer (AioCare®) for twice-daily measurements and symptom reporting via a mobile app over four weeks.
  • Evaluated obstruction detection, probability over time, spirometry variability, test correctness, and symptom reporting.

Main Results:

  • Obstruction was detected in 42% of participants.
  • The probability of detecting obstruction reached 100% within 21 days.
  • Significant diurnal variability in Peak Expiratory Flow (PEF) and Forced Expiratory Volume in 1 second (FEV1) was observed in most patients (73% and 66%, respectively).
  • 88% of participants performed tests correctly, and 85% reported symptoms.

Conclusions:

  • The "Spirometry Holter" is a novel, feasible tool for monitoring airway limitation variability, aligning with GINA guidelines.
  • This digital spirometry approach shows potential for objectively supporting asthma diagnosis in treatment-naive patients lacking documented obstruction.