There appears to be no peer-reviewed clinical validation information available on the technology used in the Nissei DS-250 to measure blood pressure.
|Medaval||Not recommended||This device has not been clinically validated.|
Altunkan S, Genç Y, Altunkan E. A comparative study of an ambulatory blood pressure measuring device and a wrist blood pressure monitor with a position sensor versus a mercury sphygmomanometer. Eur J Intern Med. 2007 Mar;18(2):118-23. PMID: 17338963.
Measurements from the Nissei DS-250 are compared to those from the Omron 637IT and a standard mercury sphygmomanometer, though not in a formal validation.
Genç Y, Altunkan S, Kilinç O, Altunkan E. Comparative study on auscultatory and oscillometric methods of ambulatory blood pressure measurements in adult patients. Blood Press Monit. 2008 Feb;13(1):29-35. doi: 10.1097/MBP.0b013e3282f13f20. PMID: 18199921.
Measurement methods are compared.