PMC8776265_01
PMC8776265_02
First catathrenia outbreak of night-polysomnographic pattern.
ssci-14-04-0390-g01.jpg
PMC8776265_02_ssci-14-04-0390-g01.jpg
f1
The first outbreak started at 4.37 a.m. during the NREM sleep and presented an expiratory groan pattern, which lasted an average of 10 seconds followed by complete silence (Figure 1).
Second Catathrenia outbreak of night-polysomnographic pattern.
ssci-14-04-0390-g02.jpg
PMC8776265_02_ssci-14-04-0390-g02.jpg
f2
At 5.26 a.m., there was another outbreak, also in NREM sleep, and it showed the same cyclic pattern as the previous one (Figure 2).