Camera-based Measurement of Respiratory Rates

NCT ID: NCT02837341

Last Updated: 2016-12-02

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

Get a concise snapshot of the trial, including recruitment status, study phase, enrollment targets, and key timeline milestones.

Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

30 participants

Study Classification

INTERVENTIONAL

Study Start Date

2015-12-31

Study Completion Date

2016-11-30

Brief Summary

Review the sponsor-provided synopsis that highlights what the study is about and why it is being conducted.

Respiratory rate as an important predictor for adverse events, but still a neglected vital sign.

Precise and simple measurement of the respiratory rate in volunteers by a new electronic camera device in different settings.

Detailed Description

Dive into the extended narrative that explains the scientific background, objectives, and procedures in greater depth.

Background of the study The respiratory rate (RR) is an important vital sign to be monitored in the emergency room, as it is a sensitive predictor of risk and critical illness . An increased RR is a sensitive and independent marker of increased mortality in patients with community acquired pneumonia and in unselected patients presenting to the emergency department (ED): This is why the RR is a component in many risk scores for prediction of adverse outcomes, such as the 'Confusion/Urea/Respiratory rate/Blood pressure/-Age 65 or older' (CURB-65) score, the Modified Early Warning Score (MEWS), Trauma Score, Revised Trauma Score, APACHE II (Acute Physiology and Chronic Health Evaluation) and PRISM (Paediatric Risk of Mortality ). Additionally, it is part of the Systemic Inflammatory Response Syndrome (SIRS) Sepsis-definition and definitions for weaning a patient from a ventilator (RSBI, Rapid Shallow Breathing Index, ). In some cases, measurement of the oxygen saturation is not sufficient as tachypnoea may not always have a connection to hypoxia . Hence, RR plays an important role in triage of patients presenting to the emergency room. Especially tachypnoea brings the need for more detailed monitoring and investigation. Tachypnea/Bradypnoea can be seen as a red flag and may indicate a big variety of diseases like heart failure, pneumonia, metabolic disturbances or pulmonary embolism. Recent studies could demonstrate that also trends of RR are reliable predictors of clinical outcome. Especially an increase in tachypnoea during hospitalisation is associated with high mortality A careful and exact measurement is essential. In emergency situations the RR is one component of the Emergency Severity Index (ESI) algorithm and a mandatory vital sign measured at decision point "D". However, its measurement is often omitted due to time constraints . Moreover documented pathologic RR in ER scenarios indicating hypoxia are often neglected leading to fatal events and contributing to deaths caused by medical errors.

According to recommendations of the World Health Organization (WHO) the RR should be measured by counting the breaths over a period of 1 minute by counting how many times the chest rises. This should be done when the patient is at rest. This appears impractical due to time consumption and workload for nursing staff in an emergency department. Studies have shown that this fact is a main reason why RR is often not recorded and critical situations might be missed. A prospective study by Lovett et al. demonstrated that the measurement of RR by nursing staff and even by impedance plethysmography as a common used device have a low sensitivity in detecting brady- or tachypnoea. The vital sign measurements may also differ according to observer variability. The approach to use mobile devices for RR measurement has shown encouraging results to improve efficiency in comparison to traditional methods though the field of using mobile devices is still in an experimental stadium.

The investigators aim to compare the results given by the camera-based measurements to the results given by capnography. The goal of the survey is to analyse the accuracy of measurements performed by the software.

The investigators will recruit healthy volunteers without any history of pulmonary diseases for an analysis of RR monitoring. Upon agreement the investigators will measure the RR camera-based by a device and simultaneously count the RR by capnography as a reference method. The data will be collected through a standardised protocol and archived in an Access(R) database. Different settings (e.g. supine vs sitting) will be assessed. Results will be depicted in a Bland-Altmann plot. In a first step the investigators plan to do a feasibility study, after that, as a second step, they will continue to measure the RR in different positions and situations to simulate a situation similar to emergency conditions.

Conditions

See the medical conditions and disease areas that this research is targeting or investigating.

Tachypnea

Study Design

Understand how the trial is structured, including allocation methods, masking strategies, primary purpose, and other design elements.

Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

DIAGNOSTIC

Blinding Strategy

NONE

Study Groups

Review each arm or cohort in the study, along with the interventions and objectives associated with them.

Volunteers

Monitoring of respiratory rates via camera-based System Monitoring of respiratory rate by Philips®Vital Sign Device - Camera-based system (Prototype) and capnography simultaneously.

Group Type OTHER

Philips®Vital Sign Device - Camera-based system (Prototype)

Intervention Type DEVICE

Respiratory rates monitored via camera-based system and capnography simultaneously The "Philips Vital Sign Device" will record chest movements by camera. The program will use an algorithm to convert the chest movements into the respiratory rate

Interventions

Learn about the drugs, procedures, or behavioral strategies being tested and how they are applied within this trial.

Philips®Vital Sign Device - Camera-based system (Prototype)

Respiratory rates monitored via camera-based system and capnography simultaneously The "Philips Vital Sign Device" will record chest movements by camera. The program will use an algorithm to convert the chest movements into the respiratory rate

Intervention Type DEVICE

Eligibility Criteria

Check the participation requirements, including inclusion and exclusion rules, age limits, and whether healthy volunteers are accepted.

Inclusion Criteria

* Age 18 and older
* healthy male volunteers
* BMI 19-25

Exclusion Criteria

* pulmonary diseases
Minimum Eligible Age

18 Years

Eligible Sex

MALE

Accepts Healthy Volunteers

Yes

Sponsors

Meet the organizations funding or collaborating on the study and learn about their roles.

Clinical Trial Unit, University Hospital Basel, Switzerland

OTHER

Sponsor Role collaborator

University Hospital, Basel, Switzerland

OTHER

Sponsor Role lead

Responsible Party

Identify the individual or organization who holds primary responsibility for the study information submitted to regulators.

Responsibility Role SPONSOR

Principal Investigators

Learn about the lead researchers overseeing the trial and their institutional affiliations.

Christian Nickel, MD

Role: PRINCIPAL_INVESTIGATOR

University Hospital, Basel, Switzerland

Locations

Explore where the study is taking place and check the recruitment status at each participating site.

Intensive Care Unit, University Hospital Basel

Basel, Canton of Basel-City, Switzerland

Site Status

Countries

Review the countries where the study has at least one active or historical site.

Switzerland

References

Explore related publications, articles, or registry entries linked to this study.

Hodgetts TJ, Kenward G, Vlachonikolis IG, Payne S, Castle N. The identification of risk factors for cardiac arrest and formulation of activation criteria to alert a medical emergency team. Resuscitation. 2002 Aug;54(2):125-31. doi: 10.1016/s0300-9572(02)00100-4.

Reference Type RESULT
PMID: 12161291 (View on PubMed)

Strauss R, Ewig S, Richter K, Konig T, Heller G, Bauer TT. The prognostic significance of respiratory rate in patients with pneumonia: a retrospective analysis of data from 705,928 hospitalized patients in Germany from 2010-2012. Dtsch Arztebl Int. 2014 Jul 21;111(29-30):503-8, i-v. doi: 10.3238/arztebl.2014.0503.

Reference Type RESULT
PMID: 25142073 (View on PubMed)

Pollack MM, Ruttimann UE, Getson PR. Pediatric risk of mortality (PRISM) score. Crit Care Med. 1988 Nov;16(11):1110-6. doi: 10.1097/00003246-198811000-00006.

Reference Type RESULT
PMID: 3048900 (View on PubMed)

Bone RC, Sprung CL, Sibbald WJ. Definitions for sepsis and organ failure. Crit Care Med. 1992 Jun;20(6):724-6. doi: 10.1097/00003246-199206000-00002. No abstract available.

Reference Type RESULT
PMID: 1597021 (View on PubMed)

Meade M, Guyatt G, Cook D, Griffith L, Sinuff T, Kergl C, Mancebo J, Esteban A, Epstein S. Predicting success in weaning from mechanical ventilation. Chest. 2001 Dec;120(6 Suppl):400S-24S. doi: 10.1378/chest.120.6_suppl.400s.

Reference Type RESULT
PMID: 11742961 (View on PubMed)

Mower WR, Sachs C, Nicklin EL, Safa P, Baraff LJ. A comparison of pulse oximetry and respiratory rate in patient screening. Respir Med. 1996 Nov;90(10):593-9. doi: 10.1016/s0954-6111(96)90017-7.

Reference Type RESULT
PMID: 8959116 (View on PubMed)

Subbe CP, Kruger M, Rutherford P, Gemmel L. Validation of a modified Early Warning Score in medical admissions. QJM. 2001 Oct;94(10):521-6. doi: 10.1093/qjmed/94.10.521.

Reference Type RESULT
PMID: 11588210 (View on PubMed)

Goldhill DR, White SA, Sumner A. Physiological values and procedures in the 24 h before ICU admission from the ward. Anaesthesia. 1999 Jun;54(6):529-34. doi: 10.1046/j.1365-2044.1999.00837.x.

Reference Type RESULT
PMID: 10403864 (View on PubMed)

Kellett J, Murray A, Woodworth S, Huang W. Trends in weighted vital signs and the clinical course of 44,531 acutely ill medical patients while in hospital. Acute Med. 2015;14(1):3-9.

Reference Type RESULT
PMID: 25745643 (View on PubMed)

Grossmann FF, Nickel CH, Christ M, Schneider K, Spirig R, Bingisser R. Transporting clinical tools to new settings: cultural adaptation and validation of the Emergency Severity Index in German. Ann Emerg Med. 2011 Mar;57(3):257-64. doi: 10.1016/j.annemergmed.2010.07.021. Epub 2010 Oct 16.

Reference Type RESULT
PMID: 20952097 (View on PubMed)

Venkatesh AK, Curley D, Chang Y, Liu SW. Communication of Vital Signs at Emergency Department Handoff: Opportunities for Improvement. Ann Emerg Med. 2015 Aug;66(2):125-30. doi: 10.1016/j.annemergmed.2015.02.025. Epub 2015 Mar 21.

Reference Type RESULT
PMID: 25805116 (View on PubMed)

Hogan J. Why don't nurses monitor the respiratory rates of patients? Br J Nurs. 2006 May 11-24;15(9):489-92. doi: 10.12968/bjon.2006.15.9.21087.

Reference Type RESULT
PMID: 16723921 (View on PubMed)

Lovett PB, Buchwald JM, Sturmann K, Bijur P. The vexatious vital: neither clinical measurements by nurses nor an electronic monitor provides accurate measurements of respiratory rate in triage. Ann Emerg Med. 2005 Jan;45(1):68-76. doi: 10.1016/j.annemergmed.2004.06.016.

Reference Type RESULT
PMID: 15635313 (View on PubMed)

Edmonds ZV, Mower WR, Lovato LM, Lomeli R. The reliability of vital sign measurements. Ann Emerg Med. 2002 Mar;39(3):233-7. doi: 10.1067/mem.2002.122017.

Reference Type RESULT
PMID: 11867974 (View on PubMed)

Karlen W, Gan H, Chiu M, Dunsmuir D, Zhou G, Dumont GA, Ansermino JM. Improving the accuracy and efficiency of respiratory rate measurements in children using mobile devices. PLoS One. 2014 Jun 11;9(6):e99266. doi: 10.1371/journal.pone.0099266. eCollection 2014.

Reference Type RESULT
PMID: 24919062 (View on PubMed)

Folke M, Cernerud L, Ekstrom M, Hok B. Critical review of non-invasive respiratory monitoring in medical care. Med Biol Eng Comput. 2003 Jul;41(4):377-83. doi: 10.1007/BF02348078.

Reference Type RESULT
PMID: 12892358 (View on PubMed)

Other Identifiers

Review additional registry numbers or institutional identifiers associated with this trial.

EKNZ 2015-306

Identifier Type: -

Identifier Source: org_study_id

More Related Trials

Additional clinical trials that may be relevant based on similarity analysis.

The PneumoRator Study
NCT07293299 RECRUITING