Data from: Screening for postoperative vital signs abnormalities by continuous remote monitoring using the Biobeat patch: A feasibility multicenter observational study

Study Objective: Evaluating the wearable Biobeat sensor which measure
hemodynamic and respiratory main variables and temperature. Design:
Prospective multicenter observational study without human intervention.
Setting: Private non-profit hospitals. Patients: Patients having had
abdominal surgery. Interventions: Carrying the precordial sensor for 72hr
whose information was transmitted to a cloud-based repository through a
Wi-Fi router. Measurements: Incidences of total or partial lack of
measurement, artifacts, hemodynamic (particularly hypotension),
respiratory and temperature abnormalities. Sensor measurements were
compared with nurses‘ ones using Bland and Altman analysis and
Clarke-Error grid analysis including five zones, from A (excellent
concordance) to E (opposite treatment). Results: 114 patients were
included, 90 were analyzed. The median duration of recording per patient
was 63.8 hrs [25-75thpercentiles: 42.6-72.3]. Overall complete data loss
was important (45% of time), and, when data was available, pulse oximetry
was missing the most often (16.1% of the remaining time). Artefacts were
infrequent (0.1%). Biobeat patch detected a severe hypotension in 10.0% of
the patients vs 2.9% according to nurse follow up (p 0.034). The bias
between Biobeat and nurses measurements was small but with large limits of
agreement. However, most Biobeat’s measurements were in zone A except for
temperature (53.4% in zone B) and respiratory rate (55.6% in zone B and
4.4% in zone D). Conclusions: Our findings suggest that wireless
monitoring using Biobeat sensor is reliable, provided that the problems
associated with data transmission are resolved.