Newly detected rapid eye movement associated sleep apnea after coronavirus disease 2019 as a possible cause for chronic fatigue: two case reports

Table 1 Parameters during polysomnography without and with the use of automatic positive airway pressure therapy in two cases after post COVID-19

	Case 1		Case 2
Parameter	Without APAP	With APAP	Without APAP	With APAP
Apnea–hypopnea index	5.2	0.0	6.2	0.0
Number of hypopnea events during REM phase	22	0	13	0
Number of hypopnea events during non-REM phase	6	0	8	1
Hypopnea index during REM phase (events/hour)	36.8	0.0	19.5	0.0
Hypopnea index during non-REM phase (events/hour)	1.2	0.0	1.4	0.2
Maximum duration of hypopnea during REM phase, seconds	54.0	0	26.5	0
Maximum duration of hypopnea during non-REM phase, seconds	29.0	0	29.5	17.0
Mean duration of hypopnea during REM phase, seconds	25.7	0	15.2	0
Mean duration of hypopnea during non-REM phase, seconds	16.6	0	13.0	17.0
Arousals, n	137	48	46	43
SpO₂ nadir during REM phase, %	90	96	85	88
Maximum heart rate during REM phase, beats per minute	68	60	77	68

APAP automatic positive airway pressure, REM rapid eye movement, SpO₂ oxygen saturation

ISSN: 1752-1947