Agreement between wireless and standard measurements of vital signs in acute exacerbation of chronic obstructive pulmonary disease: a clinical validation study

Abstract

Objective. Wireless sensors for continuous monitoring of vital signs have potential to improve patient care by earlier detection of deterioration in general ward patients. We aimed to assess agreement between wireless and standard (wired) monitoring devices in patients hospitalized with acute exacerbation of chronic obstructive pulmonary disease (AECOPD). Approach. Paired measurements of vital signs were recorded with 15 min intervals for two hours. The primary outcome was agreement between wireless and standard monitor measurements using the Bland and Altman method to calculate bias with 95% limits of agreement (LoA). We considered LoA of less than ±5 beats min−1 (bpm) acceptable for heart rate (HR), whereas agreement of peripheral oxygen saturation (SpO2), respiratory rate (RR), and blood pressure (BP) were acceptable if within ±3%-points, ±3 breaths min−1 (brpm), and ±10 mmHg, respectively. Main results. 180 sample-pairs of vital signs from 20 with AECOPD patients were recorded for comparison. The wireless versus standard monitor bias was 0.03 (LoA −3.2 to 3.3) bpm for HR measurements, 1.4% (LoA −0.7% to 3.6%) for SpO2, −7.8 (LoA −22.3 to 6.8) mmHg for systolic BP and −6.2 (LoA −16.8 to 4.5) mmHg for diastolic BP. The wireless versus standard monitor bias for RR measurements was 0.75 (LoA −6.1 to 7.6) brpm. Significance. Commercially available wireless monitors could accurately measure HR in patients admitted with AECOPD compared to standard wired monitoring. Agreement for SpO2 were borderline acceptable while agreement for RR and BP should be interpreted with caution.

Continuous monitoring of vital sign abnormalities; association to clinical complications in 500 postoperative patients

“…Vital signs were recorded continuously by clinically validated devices 20 ; (a) Isansys Lifetouch (Isansys Lifecare, Oxfordshire, UK), an FDA approved electrocardiogram (ECG) patch placed on the thorax with two electrodes (single lead ECG) recording heart rate and respiratory rate continuously; (b) FDA approved Meditech BlueBP‐05 (Meditech Ltd., Hungary), a compact device for non‐invasive oscillometric measurements of blood pressure, in this study programmed to measure every 30 min during the daytime (07 am–9:59 pm) and every 60 min during the nighttime (10 pm–06:59 am) and thus not continuously measured; and (c) FDA approved Nonin WristOx 3150 (Nonin Medical Inc., Minnesota, USA), a wearable finger pulse oximeter for peripheral oxygen saturation (Figure 1). Data were transmitted through Bluetooth to a bedside gateway and from the gateway via a secure hospital wi‐fi connection to a hospital server.…”

Continuously monitored vital signs for detection of myocardial injury in high‐risk patients – An observational study

“…AECOPD patients were monitored within 24 h of admittance, and surgical patients were monitored immediately after discharge from the post‐anaesthesia care unit (PACU) to the general ward, both cohorts for a maximum of 96 h or until discharged if sooner. Monitoring was made using the following three devices from the WARD project sensor network, all of which have been validated 18 : (1) Nonin WristOx 3150 (Nonin Medical inc., Minnesota, USA) measuring peripheral oxygen saturation (SpO 2 ) with a sampling frequency of 1 per second. (2) Isansys Lifetouch patch (Isansys Lifecare, Oxfordshire, United Kingdom) measuring heart rate (HR) continuously and respiratory rate (RR) with a 1‐minute sampling frequency derived from a single‐lead ECG.…”

Simulation-Based Education of Endovascular Scrub Nurses Reduces Stress and Improves Team Performance

“…These data were transmitted via Bluetooth to a bedside gateway. 20,21 Data were sent to a secure data server within the Wireless Assessment of Respiratory and circulatory Distress (WARD) project and extracted for further analysis. Recordings from surgical time out to surgical sign out were analyzed.…”