Prognostic Counseling for Patients With Idiopathic/Isolated Rapid Eye Movement Sleep Behavior Disorder: Should We Tell Them What's Coming? No
Prognostic Counseling for Patients With Idiopathic/Isolated Rapid Eye Movement Sleep Behavior Disorder: Should We Tell Them What's Coming? No
复制标题
特发性/孤立性快速眼动睡眠行为障碍患者的预后咨询:我们应该告诉他们即将发生什么吗?
DOI:
10.1002/mdc3.12813
复制
发表时间:
2019
影响因子:
4
通讯作者:
F. Sixel
中科院分区:
文献类型:
--
作者:
F. Sixel
A recent episode from real-world neurology: A 66-year-old male patient presented to our movement disorders clinic with hypokinetic-rigid symptoms. The diagnostic workup confirmed the initial hypothesis of Parkinson’s disease (PD). Furthermore, rapid eye movement (REM) sleep behavior disorder (RBD) was identified on video-supported polysomnography. When diagnostic findings were discussed, his wife commented on the presence of RBD: “Oh, that..., but he’s been doing that in his sleep for over 20 years! I always thought it was because of his difficult childhood!” When introduced to the concept that RBD is part of the synucleinopathy syndrome complex and may appear prodromal to motor manifestation of PD, the couple grew quite agitated and reproached themselves for neglecting to seek earlier medical counseling in the assumption that an early medical intervention at the stage of isolated RBD could have prevented the manifestation of PD. The attending neurologist had a hard time explaining that nothing was lost, there had been no negligence on their part, and that there was and currently is no preventive treatment available. This episode illustrates the dilemma of physicians confronted with patients showing idiopathic/isolated RBD (iRBD): Phenoconversion may take quite a long time. During this period of life, a person is usually still in the midst of his or her professional life, is busy with family, career, and social life. An unconditional “yes” to full disclosure of a potentially developing debilitating and uncurable disease forging its way through the brain without any available disease-modifying treatment to prevent, or at least delay its progression, may cause serious emotional or psychological distress. However, patients have the right to be adequately informed about their diagnosis and advised on therapy and prognostic aspects according to evidence-based medicine. To actively withhold information disrespects patients’ autonomy and violates the ethical codes of our profession. The scientific evidence underlining the association of iRBD with an alpha-synucleinopathy, such as PD, Lewy body dementia, or MSA, is compelling and cannot be ignored. Over 20 years ago, the first study was published showing the conversion of iRBD into PD. Approximately 14 years after the onset of RBD, 81% of patients originally diagnosed with idiopathic RBD had developed parkinsonism and/or dementia. Other study groups confirmed these findings of RBD preceding a synuclein-mediated neurodegenerative disease by more than a decade, with a neurological disease-free survival rate from the time of iRBD diagnosis of 65.2% at 5 years and 7.5% at 14 years. Therefore, RBD is now recommended as a biomarker in clinical cohorts investigating prodromal PD. By now, this information is accessible to the general public and research, for example, an Internet search will reveal the association of iRBD to neurodegenerative disease very quickly. So we should meet patients’ need for trustworthy, up-to-date information. The question is whether unconditional disclosure of an impending neurodegenerative disease for all iRBD subjects at the time of polysomnographic confirmation of the diagnosis is truly appropriate. The current lack of disease-modifying treatments, as well as the potentially long gap between the first manifestation of the sleep disorder and phenoconversion to overt parkinsonism and/or dementia, has to be considered. A latency period from iRBD onset by the patient’s history to clinically manifest PD of up to half a century has been described, and long-term followup data of patients remaining with iRBD have been published. Depending on age, comorbidities, and life expectancy, an individual diagnosed with iRBD may never during his or her lifetime experience clinically relevant manifestation of parkinsonism and/or dementia. Furthermore, it is still unclear whether or not prognostic data derived from iRBD cohorts presenting to specialized sleep centers because of violent dream enactment may be generalized to those in whom RBD or isolated REM sleep
影响因子:
14.5
作者:
Postuma, Ronald B.;Iranzo, Alex;Pelletier, Amelie
通讯作者:
Pelletier, Amelie