Respiratory Variability According to Sleep States During Mechanical Ventilation: A Polygraphic Study in a Baby with Bilateral Diaphragmatic Paralysis

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Abstract
Polygraphic recordings were performed at 1 and 2 mo. of age in a mechanically ventilated baby (25-27 insufflations per min) with bilateral diaphragmatic paralysis. The EEG and the sleep organization were normal for the given age. Breathing patterns were state dependent. Autonomous breathing movements and phasic inspiratory intercostal EMG [electromyogram] were present during both wakefulness and active sleep (AS). In quiet sleep (QS) the respiration was usually passive, completely dependent on the respirator. Small, autonomous breathings can occur in some periods of QS, simultaneously with the appearance of numerous skin potential responses. These results are probably related to the differences between the respiratory control in QS and in AS.

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