PMID- 18972547 OWN - NLM STAT- MEDLINE DCOM- 20090608 LR - 20191210 IS - 1531-8257 (Electronic) IS - 0885-3185 (Linking) VI - 24 IP - 2 DP - 2009 Jan 30 TI - Odor identification test as an indicator of idiopathic REM sleep behavior disorder. PG - 268-73 LID - 10.1002/mds.22361 [doi] AB - Reduction of olfactory function in idiopathic rapid-eye-movement (REM) sleep behavior disorder (iRBD) is of the same magnitude as that found in patients with Parkinson's disease (PD) and dementia with Lewy bodies (DLB). We assessed olfactory function using the Odor Stick Identification Test for Japanese (OSIT-J) in 48 Japanese patients with iRBD, 21 with PD, and 34 with obstructive sleep apnea syndrome (OSAS). Possible score of the OSIT-J ranges from 0 to 12. OSIT-J scores were 4.9 +/- 2.8 in patients with iRBD, 4.8 +/- 2.8 in patients with PD, and 9.9 +/- 1.4 in OSAS patients. An OSIT-J score of 8.5 was associated with a sensitivity of 88.2 and 85.3%, respectively, and specificity of 83.3 and 85.7%, respectively, in differentiating iRBD or PD patients from OSAS patients. Odor identification is impaired in Japanese patients with iRBD and PD. The results suggest that OSIT-J, which is a short and simple nonlexical olfactory identification test, can be useful as a clinical indicator for iRBD with Lewy body formation and is appropriate in the Japanese elderly population. FAU - Miyamoto, Tomoyuki AU - Miyamoto T AD - Department of Neurology, Center of Sleep Medicine, Dokkyo Medical University School of Medicine, Tochigi, Japan. miyatomo@dokkyomed.ac.jp FAU - Miyamoto, Masayuki AU - Miyamoto M FAU - Iwanami, Masaoki AU - Iwanami M FAU - Suzuki, Keisuke AU - Suzuki K FAU - Inoue, Yuichi AU - Inoue Y FAU - Hirata, Koichi AU - Hirata K LA - eng PT - Journal Article PL - United States TA - Mov Disord JT - Movement disorders : official journal of the Movement Disorder Society JID - 8610688 SB - IM MH - Aged MH - Continuous Positive Airway Pressure MH - *Discrimination, Psychological MH - Dreams MH - Female MH - Humans MH - Japan MH - Lewy Body Disease/complications/diagnosis/physiopathology MH - Male MH - Middle Aged MH - *Odorants MH - Olfaction Disorders/*diagnosis/etiology/physiopathology MH - Polysomnography MH - Predictive Value of Tests MH - REM Sleep Behavior Disorder/complications/*diagnosis/physiopathology MH - *Recognition, Psychology MH - Sensitivity and Specificity MH - Sleep Apnea, Obstructive/physiopathology/therapy EDAT- 2008/10/31 09:00 MHDA- 2009/06/09 09:00 CRDT- 2008/10/31 09:00 PHST- 2008/10/31 09:00 [pubmed] PHST- 2009/06/09 09:00 [medline] PHST- 2008/10/31 09:00 [entrez] AID - 10.1002/mds.22361 [doi] PST - ppublish SO - Mov Disord. 2009 Jan 30;24(2):268-73. doi: 10.1002/mds.22361.