Bradycardia was defined as a heart rate of less than 50 bpm and bradypnoea
as a respiratory rate of less than 10 breaths/minute.
In those patients who did have this vital observation monitored, none had tachypnoea or bradypnoea
in the 24 hour period and only one patient had an abnormal oxygen saturation (89%) on transfer to the ward.
* Respiratory Dysfunction- Acute cyanosis, gasping, severe tachypnoea (respiratory rate > 40 breaths per minute), severe bradypnoea
(respiratory rate < 6 breaths per minute), intubation and ventilation not related to anaesthesia, severe hypoxaemia ([O.sub.2] saturation < 90% for > 60 minutes or PA[O.sub.2]/Fi[O.sub.2] < 200).
Systemic reactions, such as tachycardia, bradycardia, tachypnoea, bradypnoea
, hyper- or hypothermia, systemic hypo- or hypertension, and haemolysis in a peripheral blood smear during therapy were observed in the neonates.
The absence of indicators of respiratory dysfunction (hypoxaemia, tachypnoea and bradypnoea
) for each device tested suggests that the devices were safe and effective at providing low-flow oxygen supplementation for the assessment period.