Key result
The Medic4All wrist-worn sensor accurately measured vital signs compared to conventional devices, with a mean error of -0.1 beats/min for heart rate and 0.1 respirations/min for respiration rate.
Why the study?
Does a wireless wristwatch-like sensor accurately measure heart rate and respiration rate compared to conventional ECG and spirometry in cardiac and healthy patients?
Observational (n=144)
Does a wireless wristwatch-like sensor accurately measure heart rate and respiration rate compared to conventional ECG and spirometry in cardiac and healthy patients?
Mean Difference: -0.1
A wireless wristwatch-like sensor provides accurate measurements of heart rate and respiration rate compared to conventional ECG and spirometry, suggesting utility for home monitoring.
May support remote vital sign monitoring; hypothesis-generating and requires prospective validation before practice change.
A telecare system (Medic4All) has been developed that relies on a wireless wristwatch-like sensor to measure the pulse wave from the radial artery. From this, the heart rate and respiration rate are derived. The system's performance was examined by comparing the results obtained from the pulse wave signal with those obtained from conventional electrocardiographic and spirometer devices. A total of 144 patients participated in the study; their mean (SD) age was 43 (18) years. There were 44 cardiac patients in group 1 and 100 healthy patients, who were studied in their homes, in group 2. There was a significant correlation between the heart rates measured by the two monitoring methods. A 'difference versus average' analysis showed that the error distribution had a mean (SD) value of -0.1 (3.3) beats/min. Similarly, the respiration rates measured by the two techniques were significantly correlated. The error distribution had a mean (SD) value of 0.1 (1.9) respirations/min. The present study suggests that the wrist-worn sensor represents a promising tool for online detection and monitoring of vital signs in the home.
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Kornowski et al. (2003) conducted an observational in Cardiac patients and healthy individuals (n=144). Medic4All telecare system vs. Conventional electrocardiographic and spirometer devices was evaluated on Heart rate measurement accuracy (MD -0.1). The Medic4All wrist-worn sensor accurately measured vital signs compared to conventional devices, with a mean error of -0.1 beats/min for heart rate and 0.1 respirations/min for respiration rate.
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