0709 Incidence, Determinants, and Impact of RLS During Pregnancy and Puerperium

Introduction RLS is associated with a lower quality of life. During pregnancy, RLS is highly frequent and peaks in the third trimester. The main objective of the present study was to evaluate the impact of RLS on sleep during pregnancy and puerperium by using subjective and objective data. Methods This study was part of the multicenter study “Life-ON”, prospective, cohort investigation on sleep and mood changes during early pregnancy until 12 months after delivery. The presence of Restless legs Syndrome (RLS) was assessed in interview, according to essential criteria for diagnosis of RLS proposed by the International RLS Study Group (IRLSSG) during 11 visits (1 º, 2 º and 3 º trimester; and after delivery – 8 visits). Sleep was evaluated by PSG during the 2º trimester. Mood (MADRS, EPDS, HDRS-21), sleep quality (PSQI), insomnia (ISI), sleepiness (ESS) were also assessed at visits. Results Out of the 439 pregnant women recruited, 113 (26.037%) met the criteria for diagnosis of RLS. Together with the prevalence, the severity of RLS get worse in the third trimester. Pregnant women suffering from RLS had a worse sleep quality and insomnia then non-RLS women. A reduction in Sleep Efficiency and an increase in PLMS have also been demonstrated by polysomnography. Mood deflection was also associated with RLS; while RLS was not associated with adverse fetal outcomes and pregnancy related complications. Conclusion RLS is confirmed to be highly prevalent in late pregnancy. A negative impact of RLS on mood and sleep was evident from both subjective and objective tests. Support (if any)