Efficacy of Medical Device Alarm Integration into a Simulated H-60 Integrated Communication System

This study sought to examine the efficacy of integrating medical device alarms into the intercommunication set of a simulated HH-60, allowing medics to hear the alarms over the ambient noise of the aeromedical environment.

U.S. Army critical care flight paramedics were recruited as subjects for this study. Subjects participated in two testing scenarios: One with patient monitor alarms integrated into their communication lines and one without integrated alarms (the control condition). Testing took place in a simulated HH-60 interior with two priority-level patients per testing scenario, one on either side of the interior. Subjects provided care to these two patients for 30 minutes per scenario. After both scenarios were complete, the subjects were given a questionnaire to obtain their feedback on alarm integration.

Six subjects took part in this study, so the results do not have sufficient power to represent the population. No statistically significant results were found. Looking at the trends in the data, implementing alarm integration showed the indications of reducing reaction time to alarms, decreasing or matching the amount of time spent with the patient monitor, and equivalent amounts of time dedicated to patient treatment when compared to the nonintegrated scenario.The feedback obtained from the subjects provided a list of perceived benefits, drawbacks, and improvements related to the integration of medical device alarms into the intercommunication set.

Although the study was underpowered, the trends in the data indicate a benefit to the medics when integrating medical device alarms. When coupled with strongly favorable end-user feedback, the results provide justification for pursuing the effort of integrating alarms and performing future studies with improved integration systems to optimize the potential of the system.