Investigation identified that the issue reported is associated defect in which the device logic looks back 7 days inclusive of today and gets the minimum and the maximum value from those past measurements.The device logic then compares the date of the maximum and minimum value to determine if it is an increase or decrease within the timeframe.Patient's weight measurements ranged from (b)(6).Over a 7 day period.The device only flagged for the weight loss, not the weight gain.The patient was hospitalized due to the weight gain.The intervention rule evaluates the difference of the largest and the smallest value over the defined number of days.If the change in measurement meets the requirements, the intervention rule flags.The decrease of measurements works similarly, it evaluates the smallest value and largest value over a number of defines days.If the change in measurement meets the requirements after the set number of days, the intervention rule flags.The two rules are applied separately and as the patient experienced both larger weight loss and smaller weight gain, only the weight loss met the requirements and the weight loss was flagged.Engineering developed a corrective action for this defect and is being deployed to affected customers.The defect is corrected in v.1.3.
|