Data from: Non-contact respiration monitoring using impulse radio ultrawideband radar in neonates

Vital sign monitoring in neonates requires adhesive electrodes, which
often damage fragile newborn skin. Because impulse radio ultrawideband
(IR-UWB) radar has been reported to recognize chest movement without
contact in adult humans, IR-UWB may be utilized to measure respiratory
rates (RRs) in a noncontact fashion. We investigated the feasibility of
radar sensors for respiration monitoring in neonates without any
respiratory support and to compare the accuracy and reliability of radar
measurements with those of conventional impedance pneumography
measurements. In the neonatal intensive care unit, RRs were measured using
radar (RRRd) and impedance pneumography (RRIP) simultaneously. The
neonatal voluntary movements were measured using the radar sensor and
categorized into 3 levels (low [M0], intermediate [M1], and high [M2]).
RRRd highly agreed with RRIP (r=0.90; intraclass correlation coefficient
[ICC]=0.846 [0.835–0.856]). For the M0 movement, there was good agreement
between RRRd and RRIP (ICC=0.893; mean bias -0.15 [LOA -9.6–10.0]).
However, the agreement was slightly lower for the M1 (ICC=0.833; mean
bias=0.95 [LOA -11.4–13.3]) and M2 (ICC=0.749; mean bias=3.04 [LOA
-9.30–15.4]) movements than for the M0 movement. In conclusion, IR-UWB
radar can provide accurate and reliable estimates of RR in neonates in a
noncontact fashion. The performance of radar measurements could be
affected by neonate movement.