Difference in finger, earlobe, and forehead oxygen levels to predict outcomes in dyspnea

Is this trial a fit for you?

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This prospective observational study enrolls adults (≥19) with dyspnea presenting to a single emergency department. SpO2 is measured simultaneously at the finger, earlobe, and forehead, along with perfusion indices, to calculate inter-site differences (ΔSpO2). The primary outcome compares mean ΔSpO2 between patients who experience poor outcomes (death or ICU admission) and those with favorable outcomes. Secondary analyses assess associations with mortality, ICU admission, the need for intubation, lactate, and perfusion index, and compare predictive performance against established early warning scores. Data are collected at presentation and outcomes are obtained from medical records; analyses include logistic regression and ROC methods. The study is led by Yonsei University at Yonsei University Severance Hospital in Seoul, Korea, and focuses on adult dyspnea patients admitted with KTAS levels 1-3.

Why it matters

Who can join: the full rules

Inclusion Criteria:

* Adult patients aged 19 years or older presenting to the emergency department with dyspnea, classified as KTAS level 1-3

Exclusion Criteria:

* Patients in whom SpO₂ measurements were not obtained simultaneously
* Patients in whom arterial blood gas analysis was not ordered at initial evaluation
* Pregnant patients
* Patients with facial trauma or hand trauma
* Patients with amputation, injury, or burns at the measurement sites
* Patients wearing nail polish
* Patients with dyshemoglobinemia
* Non-Korean nationality
* Patients who did not provide consent to participate in the study

Where it's running

• Yonsei University Severance Hospital
  Seoul, Seoul, South Korea Recruiting

Study contacts

• Study coordinator: Stephen GW LEE, MD
• Email: leestephengyungwon@yuhs.ac
• Phone: 82-10-5124-8415

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How to take part

1. Review the eligibility criteria above with your treating physician.
2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.