Telemonitoring of Spirometry and Oximetry in Patients with Interstitial Lung Disease Associated with Connective Tissue Disorders: A Prospective Observational Cohort Analysis - Scorecard - MDSpire

Telemonitoring of Spirometry and Oximetry in Patients with Interstitial Lung Disease Associated with Connective Tissue Disorders: A Prospective Observational Cohort Analysis

  • By

  • Wan Lin Ng

  • Aoife Carolan

  • Imran Sulaiman

  • Garrett Greene

  • Ross K. Morgan

  • Donough Howard

  • Laura Durcan

  • Killian Hurley

  • November 20, 2025

  • 0 min

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Clinical Scorecard: Telemonitoring of Spirometry and Oximetry in Patients with Interstitial Lung Disease Associated with Connective Tissue Disorders: A Prospective Observational Cohort Analysis

At a Glance

CategoryDetail
ConditionInterstitial Lung Disease (ILD) associated with Connective Tissue Disorders (CTD)
Key MechanismsAutoimmune multisystem inflammation causing pulmonary complications; monitoring via home spirometry (FVC, FEV1) and pulse oximetry (SpO2) to detect disease progression and exacerbations
Target PopulationAdults with CTD-ILD (including RA, SSc, PM, DM, pSS, MCTD, UCTD) and idiopathic pulmonary fibrosis (IPF) as control
Care SettingHome-based telemonitoring with remote data transmission to healthcare providers in tertiary referral centers

Key Highlights

  • Home spirometry correlates well with hospital spirometry and enables early detection of ILD progression and acute exacerbations.
  • Pulse oximetry is critical for monitoring hypoxemia, guiding oxygen supplementation decisions in ILD patients.
  • Challenges in home monitoring include impaired hand function and microstomia in CTD patients, and Raynaud’s phenomenon affecting SpO2 accuracy.

Guideline-Based Recommendations

Diagnosis

  • Diagnosis of CTD-ILD should follow ACR/EULAR and Alarcón-Segovia criteria for CTD and established ILD diagnostic criteria.
  • IPF diagnosis should follow ATS/ERS/JRS/ALAT guidelines or surgical lung biopsy confirmation.

Management

  • Use handheld spirometers linked to smartphone apps for weekly home monitoring of FVC and FEV1.
  • Employ finger or ear-clip pulse oximeters to monitor peripheral oxygen saturation regularly.
  • Provide alternative oximetry devices (ear-clip) for patients with Raynaud’s phenomenon to improve SpO2 accuracy.

Monitoring & Follow-up

  • Perform at least weekly spirometry maneuvers at consistent times, using the best daily value for analysis.
  • Transmit data securely and in real-time to healthcare providers for review.
  • Use patient-reported outcome measures (mMRC, LCQ, K-BILD, EQ-5D-3L) at baseline and 6 months to assess symptoms and quality of life.
  • Define successful adherence as >70% weekly monitoring compliance.

Risks

  • Potential for inaccurate spirometry readings due to microstomia limiting mouthpiece seal.
  • False low SpO2 readings in patients with Raynaud’s phenomenon due to impaired peripheral circulation.
  • Exclusion of patients without smartphone/internet access or life expectancy under 12 months limits applicability.

Patient & Prescribing Data

Patients with CTD-ILD and IPF participating in home monitoring programs

Home telemonitoring is feasible and acceptable, with adherence influenced by device usability and patient-specific challenges related to CTD manifestations.

Clinical Best Practices

  • Provide training and support to patients for device setup and use to enhance adherence.
  • Use Bluetooth-enabled spirometers linked to secure smartphone applications for real-time data sharing.
  • Offer alternative oximetry devices for patients with peripheral circulation issues to ensure accurate SpO2 readings.
  • Incorporate patient-reported outcome measures to complement physiological monitoring and guide clinical decisions.

References

Original Source(s)

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