Patients undergoing major surgery are at risk of postoperative complications. Continuous wireless monitoring outside the post-anesthesia or intensive care units may enable early detection of patient deterioration, but good accuracy of measurements is required. This validation study, which is part of the WARD-SX project, aimed to assess the agreement between vital signs recorded by standard and novel wireless devices
Patients undergoing major surgery are at risk of postoperative complications. Complications may be preceded by abnormal vital signs. Standard monitoring at general wards is intermittent and manual, leaving the patients unobserved for extended periods. The chance to enhance monitoring has arisen with recent technological advances in the form of small wearable and wireless devices that continuously record vital signs. Wearable devices enable continuous monitoring outside the intensive care unit and post-anesthesia care unit, thus enabling early detection of patient deterioration. However, before implementing such devices in hospital settings, good accuracy, and precision of measurements is required. This validation study, which is part of the WARD-SX project, aimed to assess the agreement between vital signs recorded by standard and novel wireless devices
Study Type
OBSERVATIONAL
Enrollment
20
Department of Anesthesiology, Center for Cancer and Organ Diseases
Copenhagen, Denmark
Heart rate comparisons
Heart rate (beats per minute) measurements compared between Isansys Lifetouch and standard monitoring (Phillips IntelliVue). Analysed using Bland Altman (BA) analysis to measure mean diference and limits of agreement between to methods. The BA analysis is corrected for repeated measures within each subject.
Time frame: 1.5 hours (measurement interval every 15 min)
Respiratory rate comparisons
Respiratory rate (breaths per minute) measurements compared between Isansys Lifetouch and observed counted measurements. Analysed using Bland Altman (BA) analysis to measure mean difference and limits of agreement between to methods. The BA analysis is corrected for repeated measures within each subject.
Time frame: 1.5 hours
SpO2 measurements comparisons wireless vs. standard
SpO2 (percent) measurements compared between Nonin WristOx 3150 and standard monitoring. Analysed using Bland Altman (BA) analysis to measure mean difference and limits of agreement between to methods. The BA analysis is corrected for repeated measures within each subject.
Time frame: 1.5 hours (measurement interval every 15 min)
SpO2 measurements comparisons wireless vs. invasive
SpO2 (percent) measurements compared between Nonin WristOx 3150 and arterial arterial oxygen saturation. Analysed using Bland Altman (BA) analysis to measure mean difference and limits of agreement between to methods. The BA analysis is corrected for repeated measures within each subject.
Time frame: 1.5 hours
Pulse rate comparisons
Pulse rate measurements (beats per minute) measures compared between Nonin WristOx 3150 and standard monitoring. Analysed using Bland Altman (BA) analysis to measure mean difference and limits of agreement between to methods. The BA analysis is corrected for repeated measures within each subject.
Time frame: 1.5 hours
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Blood pressure comparisons wireless vs. standard
Blood pressure (mmHg) measurements compared between Meditech BlueBp-05 and standard monitoring. Analysed using Bland Altman (BA) analysis to measure mean difference and limits of agreement between to methods. The BA analysis is corrected for repeated measures within each subject.
Time frame: 1.5 hours, every 15 min
Blood pressure comparisons, wireless vs. arterial BP
Systolic and diastolic (mmHg) measurements compared between Meditech BlueBp-05 and invasive arterial blood pressure. Analysed using Bland Altman (BA) analysis to measure mean difference and limits of agreement between to methods. The BA analysis is corrected for repeated measures within each subject.
Time frame: 1.5 hours