Breathing Rate, Respiratory Rate
Conditions
Keywords
respiratory rate, emergency department, Welch
Brief summary
This prospective observational study will evaluate the accuracy of the Welch Allyn Connex Spot Monitor equipped with a Masimo SpO₂ finger sensor in measuring respiratory rate in the emergency department. Respiratory rate is a key predictor of patient deterioration, yet it is frequently measured inaccurately when assessed manually. In this study, respiratory rate values obtained by the monitor will be compared against manual counts performed by trained observers (physicians). An additional analysis will compare respiratory rates measured by trained observers with those recorded by triage nurses during triage. A subgroup analysis will also investigate whether cardiac arrhythmias influence measurement accuracy. The aim is to examine if respiratory rates measured by the Welch Allyn Connex Spot Monitor are comparable to those obtained by trained observers and triage nurses in the emergency department.
Detailed description
Design: prospective observational method comparison study
Interventions
None listed
Sponsors
Semmelweis University
Dr. Rapszky Gabriella Anna
Study design
Observational model
OTHER
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No
Inclusion criteria
\- all patients aged ≥18 years.
Exclusion criteria
* patients receiving invasive or non-invasive respiratory support; * patients with disorders causing involuntary movements; * skin or digit abnormalities preventing proper application of the pulse oximeter; * clinically unstable patients on arrival (requiring immediate transfer to the resuscitation area); * patients with a left ventricular assist device (LVAD).
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Agreement between respiratory rate values measured by the Welch Allyn Connex Spot Monitor and manual counts performed by trained observers (reference standard) | During the emergency department visit (single measurement per participant). | Respiratory rate will be measured simultaneously using the Welch Allyn Connex Spot Monitor and by trained observers performing manual counting over 60 seconds. Agreement between the two methods will be assessed using the Intraclass Correlation Coefficient and Bland-Altman analysis to evaluate bias and limits of agreement. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Agreement between respiratory rate values measured by trained observers and those recorded by triage nurses during triage | During the emergency department visit (single measurement per participant). | Respiratory rate measurements recorded by triage nurses during triage will be compared with manual 60-second counts performed by trained observers. Agreement between the two methods will be evaluated using the Intraclass Correlation Coefficient and Bland-Altman analysis to assess bias and limits of agreement. |
| Agreement between respiratory rate values measured by the Welch Allyn Connex Spot Monitor and manual counts performed by trained observers in patients with ECG-confirmed arrhytmias | During the emergency department visit (single measurement per participant). | Respiratory rate measurements recorded by triage nurses during triage will be compared with manual 60-second spot measurements performed by trained observers. Agreement between the two methods will be evaluated using the Intraclass Correlation Coefficient and Bland-Altman analysis to assess bias and limits of agreement. |
Countries
Hungary
Contacts
Primary ContactBánk G Fenyves, MD, PhD
Backup ContactGabriella A Rapszky, MD
Outcome results
None listed