Impairments in sleep and brain molecular clearance in people with cognitive deterioration and biological evidence of AD: a report of four cases

Table 2 Sleep objective and subjective data. Absolute parameter values obtained from a full night sleep polysomnography (PSG) recording, and Pittsburgh Sleep Quality Index (PSQI) [10] scores

PSG Parameters	T001	T002	T003	T004
Sleep Latency (min)	1.8	14.4	40.0	49.5
Total sleep time (min) Sleep efficiency (%)	315.0 66.7	314.5 66.2	199.5 39.0	297.5 61.8
N1%	43.3	17.0	28.6	28.4
N2%	46.5	45.5	56.1	51.4
N3%	5.2	24.3	0.3	10.6
REM %	4.9	13.2	15.0	18.8
PLMS index (events/hr)	2.9	0	26.8	0
AHI (events/hr)	37.9	10.9	8.4	40.9
WASO (min) ST₉₀ (%)	155.5 0.6	146.1 0.1	271.7 8.4	134.6 69.7
Pittsburgh Sleep Quality Index (PSQI)	15	6	NA	4

Abbreviations: periodic limb movement during sleep (PLMS); Apnoea/hypopnea index (AHI); rapid eye movement (REM), Non-REM stage 1 (N1); stage 2 (N2) and stage 3 (N3); wakefulness after sleep onset (WASO) and total sleep time with oxygen saturation below 90% (ST₉₀).

ISSN: 1471-2377