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To the Editor Patient selection criteria for deep brain stimulation (DBS) in Parkinson disease have been constantly refined and age is certainly a critical factor. DeLong et al1 proposed that the results of their study, showing little difference in postoperative complication rates, length of hospital stay, or mortality rates within 90 days of surgery in older vs younger patients, could support an expansion of the therapeutic window greater than the traditional age cutoff.
Aquino CC, Lozano AM, Lang AE. Deep Brain Stimulation for Parkinson Disease in Elderly Individuals. JAMA Neurol. 2015;72(3):367. doi:10.1001/jamaneurol.2014.4216