HeartLight: Heart Rate Monitoring for Newborn Resuscitation

Inclusion Criteria: * Written consent from the mother * Realistic prospect of survival as determined by the attending clinical team Phase 1: \- Infants on NICU Phase 2: \- Infants on NICU requiring heart rate monitoring Phase 3: \- Newborn infants following non-emergency elective cesarean section Phase 4: \- Newborn infants who attending clinical team anticipate will require assessment of heart rate at time of birth Feedback: * Mothers of babies recruited into HeartLight study * Healthcare professionals exposed to the new device Exclusion Criteria: Phase 1+2: * Infants undergoing palliative care * Infants too sick to tolerate additional procedures Phase 3: * Abnormal antenatal scans suggesting significant fetal abnormality (by definition these are not routine pregnancies). * Any infant in whom resuscitation is likely to be required. * If multiple births then only the first baby born shall be recruited (due to resource limitations with researchers attending the birth) Phase 4: * Infants \<23 weeks * Infants that are not for active resuscitation as decided by the clinical team * If multiple births then only the first baby born shall be recruited (due to resource limitations with researchers attending the birth) Feedback: Unable to obtain written informed consent