Real-Time Visual Feedback Device Improves Quality Of Chest Compressions; A Manikin Study

摘要

Objective: To evaluate the impact of a real-time visual feedback device on CCs rate and depth delivered by?healthcare professionals.Methods: In a simulated scenario a sensor was placed on a manikin’s chest and connected to a defibrillator?which provided real-time visual feedback on the rate and depth of CCs. Thirty-two healthcare professionals?performed sequentially 5 cycles of 30 CCs without (FeedOFF) and with (FeedON) feedback. CCs with a depth?between 50 and 60mm and a rate between 100 and 120cpm were considered optimal.Results: Visual feedback resulted in a significant increase in the proportion of CCs with optimal depth (median?8.7 [interquartile range 0.7–55.5]% FeedOFF vs 63.3 [17.6–88.1]% FeedON, p=0.002) and optimal rate (median?51.3 [1.3–81.3]% FeedOFF vs 68.3 [45.3–86.1]% FeedON, p=0.018). Overall, CCs were too shallow and too?fast in the FeedOFF cycle. There was also a significant increase in optimal CCs (optimal depth and rate) with?the use of the feedback device (from median 0.7 [0–26.9]% FeedOFF to 31.9 [3.6-59.9]% FeedON, p=0.001).?Participants’ factors such as age, sex, body mass index, job or time since last CPR training did not have a?significant impact on CPR quality.Conclusion: In the absence of visual feedback, there is a tendency towards lower depth and higher rate of CCs.?The use of feedback technology significantly improves the quality of CCs.