The PEP respiratory monitor: a validation study

Brookes, C N; Whittaker, Jonathan; Moulton, Christopher J.; Dodds, D.E.

doi:10.1136/emj.20.4.326

Cited by 11 publications

(5 citation statements)

References 10 publications

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“…The most commonly used method to determine the respiratory rate is discontinuous manual measurement by counting the respiratory chest movements (via inspection or auscultation). In adult patients, the respiratory rate can also be measured manually with sufficient reliability (good intra-and inter-observer reliability) (29,30). Taking into consideration the variability of breathing, a period of at least 30 seconds should be allowed for measuring.…”

Section: Measuring Of Respiratory Ratementioning

confidence: 99%

The Prognostic Significance of Respiratory Rate in Patients With Pneumonia

Strauß

Ewig

Richter

et al. 2014

Deutsches Ärzteblatt International

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Section: Measuring Of Respiratory Ratementioning

confidence: 99%

The Prognostic Significance of Respiratory Rate in Patients With Pneumonia

Strauß

Ewig

Richter

et al. 2014

Deutsches Ärzteblatt International

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“…Despite its limitations manual counting of respiratory rate is seen as the industry standard whereas capnography is recognized as the gold standard measurement. We aimed to demonstrate equivalence of RespiraSense™ at measuring respiratory rate in comparison to the gold standard method of capnography [ 10 , 11 ] and to manual counting both when the patient is (a) instructed to remain still and (b) when allowed to go about normal hospital routines.…”

Section: Introductionmentioning

confidence: 99%

Continuous Monitoring of Respiratory Rate in Emergency Admissions: Evaluation of the RespiraSense™ Sensor in Acute Care Compared to the Industry Standard and Gold Standard

Subbe

Kinsella²

2018

Sensors

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Respiratory Rate (RR) is the best marker to indicate deterioration but measurement are often inaccurate. The RespiraSense™ is a non-invasive, wireless, body worn, motion-tolerant and continuous respiratory rate monitor. We aimed to determine whether the performance of RespiraSense™ was equivalent to that of a gold standard measurement technique of capnography and the industry standard of manual counts. RespiraSense™ measures respiratory rate and transmit signals wirelessly to a tablet device. We measured respiratory rate in 24 emergency admissions to an Acute Medical Unit in the UK. Patients were observed for two hours. Manual counts were undertaken every 15 min and compared to measurements with capnography and RespiraSense™. Data from 17 patients admitted as medical emergencies was evaluated. For measurements obtained at rest a mean RR of 19.3 (SD 4.89) for manual measurements compared to mean RR of 20.2 (SD 4.54) for measurements obtained with capnography and mean RR of 19.8 (SD 4.52) with RespiraSense™. At rest, RespiraSense™ has a bias of 0.38 and limits of agreement of 1.0 to 1.8 bpm, when compared to the capnography derived RR. Measurements were within pre-defined limits of error at rest. Continuous measurement of RR with RespiraSense™ in patients admitted as acute emergencies is both feasible and reliable.

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“…The PPG-based HR measurements comparison was further tested by using the Bland–Altman analysis ( Figure 6 ), which has been intensively used in wearable device performance assessments [ 50 , 57 ]. In a physiological monitoring study, Gatti and colleagues [ 55 ], based on previous sport studies, selected a maximum acceptable limit of agreements (LoA) in the range of ±11 bpm for HR.…”

Section: Discussionmentioning

confidence: 99%

A Study on the Effect of Contact Pressure during Physical Activity on Photoplethysmographic Heart Rate Measurements

Scardulla

D’Acquisto

Colombarini

et al. 2020

Sensors

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Heart rate (HR) as an important physiological indicator could properly describe global subject’s physical status. Photoplethysmographic (PPG) sensors are catching on in field of wearable sensors, combining the advantages in costs, weight and size. Nevertheless, accuracy in HR readings is unreliable specifically during physical activity. Among several identified sources that affect PPG recording, contact pressure (CP) between the PPG sensor and skin greatly influences the signals. Methods: In this study, the accuracy of HR measurements of a PPG sensor at different CP was investigated when compared with a commercial ECG-based chest strap used as a test control, with the aim of determining the optimal CP to produce a reliable signal during physical activity. Seventeen subjects were enrolled for the study to perform a physical activity at three different rates repeated at three different contact pressures of the PPG-based wristband. Results: The results show that the CP of 54 mmHg provides the most accurate outcome with a Pearson correlation coefficient ranging from 0.81 to 0.95 and a mean average percentage error ranging from 3.8% to 2.4%, based on the physical activity rate. Conclusion: Authors found that changes in the CP have greater effects on PPG-HR signal quality than those deriving from the intensity of the physical activity and specifically, the individual best CP for each subject provided reliable HR measurements even for a high intensity of physical exercise with a Bland–Altman plot within ±11 bpm. Although future studies on a larger cohort of subjects are still needed, this study could contribute a profitable indication to enhance accuracy of PPG-based wearable devices.

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The PEP respiratory monitor: a validation study

Cited by 11 publications

References 10 publications

The Prognostic Significance of Respiratory Rate in Patients With Pneumonia

The Prognostic Significance of Respiratory Rate in Patients With Pneumonia

Continuous Monitoring of Respiratory Rate in Emergency Admissions: Evaluation of the RespiraSense™ Sensor in Acute Care Compared to the Industry Standard and Gold Standard

A Study on the Effect of Contact Pressure during Physical Activity on Photoplethysmographic Heart Rate Measurements

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