L.MOHAPATRA1, L.G CHAN1, N.D.LIM1, O.H.CHAN1, H.S.M.NG2
Tan Tock Seng Hospital1, Admiralty Medical Centre2
Stroke is the leading cause of long-term disability in Singapore and literature suggests that majority of stroke patients face sleep problems post stoke. In this preliminary analysis we explored stroke patients’ subjective sleep report within 3 months post-stroke.
The eligibility criteria consisted of patients who experienced a stroke not more than 6 months ago and did not have delirium, aphasia, mental illnesses, or history of substance abuse at the time of assessment. Patients were recruited from Tan Tock Seng Hospital and scores for the 4AT screen for delirium at the time of index stroke hospitalisation were retrieved. Sleep was assessed using the Pittsburgh Sleep Quality Index (PSQI).
A total of 28 participants contributed data to this study. Sleep efficiency (SE), sleep latency (SL), total sleep time (TST) and time in bed (TIB) were obtained from the corresponding PSQI component. SE below 85%, TST below 7 hr and TIB below 8hr were deemed as poor. Fisher’s exact test was conducted to assess statistical significance.
Preliminary results showed that posterior circulation strokes were associated with poor SE (P=0.035). Bilateral stroke was associated with poor TIB (P=0.045) compared to only left or right side. There was a trending interaction between posterior circulation stroke and poor TST (P=0.056). The presence of cognitive impairment at time of stroke was unexpectedly negatively associated with poor SL (P=0.049).
Preliminary analysis suggests that posterior circulation strokes may be associated with self-reported poor sleep indices. Further research correlating subjective reports and objective sleep measures are needed evaluate this relationship