case_images: PMC8776265_01
case_images: PMC8776265_02
case_images: First catathrenia outbreak of night-polysomnographic pattern.
case_images: ssci-14-04-0390-g01.jpg
case_images: PMC8776265_02_ssci-14-04-0390-g01.jpg
case_images: f1
case_images: 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).
case_images: Second Catathrenia outbreak of night-polysomnographic pattern.
case_images: ssci-14-04-0390-g02.jpg
case_images: PMC8776265_02_ssci-14-04-0390-g02.jpg
case_images: f2
case_images: 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).