Figure 5.

The time waveform of the L _eq in the open room is shown over a 20-min period with corresponding heart rate data for Babies A and B. Multiple acoustic events, which were identified by the observer to be alarms that were unrelated to either infant, took place during this time window. Visual examination reveals that Baby B’s heart rate may be fluctuating with the onset of acoustic events; however, Baby A’s heart rate remains stable. Overall variability of infants precluded measurable correlation between events and physiologic changes.