<prompt> A non-ventilated preterm baby in incubator is under observation. Which is the best way to monitor the babys breathing and detect apnea?Infrared throracic movement studyCapnographyNasal digital temperature monitoringImpedance technique  <response>: d. Impedance techniqueRef: AAP guidelines 2015Respiratory monitoring is based on impedance technique, that measures changes in electrical resistance during breathing;The electrode is fixed on the chest wall to pick up signals which are displayed as respiratory rate. 