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Masimo announces findings from before-and-after study of Patient SafetyNet
The Fly

Masimo announces findings from before-and-after study of Patient SafetyNet

Masimo announced the findings of a before-and-after study published in PLoS ONE in which Ahmed Balshi and colleagues at King Saud Medical City in Riyadh, Saudi Arabia, evaluated the impact of implementing remote patient monitoring with Masimo Patient SafetyNet on the efficacy of hospital rapid response teams, or RRTs. Comparing outcomes before and after implementation of Patient SafetyNet, they found that the "after" group experienced more RRT activations but had significantly lower incidence and rate of cardiopulmonary resuscitation, or CPR, significantly shorter hospital length of stay, or LOS, and lower hospital mortality. Noting that RRT activation depends on the "timely detection of [patient] deterioration," the researchers sought to determine whether a remote patient surveillance system that automated calculation and relaying of early warning scores could lead to earlier recognition of changes in patient status and the improved efficacy of RRTs. They hypothesized that implementing such a system could decrease the rate of severe adverse events, as a result of potentially quicker RRT activation. To that end, they designed a "before" and "after" study at a large government hospital in central Saudi Arabia where the ICU provides outreach, in the form of an RRT, to the general ward. In the "before" period nurses manually recorded patient vital signs, calculated warning scores, and activated RRTs; in the "after" period", vital signs data collected at the bedside, alongside automatically calculated warning scores, were wirelessly relayed to nursing stations for centralized remote patient surveillance and RRT activation. Both before and after, activation of an RRT was triggered when a patient’s vital signs deteriorated to the point they scored greater than or equal to 5 on the MEWS scale. "Before" group data was analyzed from 2,346 adult patients from January to August 2020, and "after" group data from 2,151 patients from September 2020 to April 2021. For the "after" group, Masimo Patient SafetyNet was used to automate transfer of bedside monitoring data to central nursing stations, with alarm and notification data also relayed to clinicians’ smartphones using Masimo Replica. The researchers found that in the "before" group, there were 78 episodes of CPR over 20,510 total inpatient days, for an incidence of 3.3% and rate of 3.8 per 1000 inpatient days. In the "after" group, there were 42 episodes over 17,945 inpatient days, for an incidence of 1.95% and rate of 2.3 per 1000 inpatient days. CPR incidence in the "after" group was significantly lower. In addition, the CPR success rate was significantly higher in the "after" group. The average hospital LOS was higher in the "before" group. The number of RRT activations was lower in the "before" group. Overall hospital mortality was lower in the "after" group. Using multivariable logistic regression, they calculated that being in the "after" group decreased a patient’s odds of needing CPR by 33%.

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