Abstract 173: The Effectiveness of Continuous Voice Feedback in Telephone CPR to Maintain the Quality of Hands-Only Cardiopulmonary Resuscitation
Background: Also, it is well known that telephone-CPR (T-CPR) is effective to increase the rate of bystander CPR. However few reported suggested that T-CPR’ effective trough neurologically favorable outcome due to lack of adequate feedback.
Purpose: The aim is this study is to identify the effective voice feedback during on T-CPR.
Method: Twenty layperson without CPR training experience for at least 1 year were enrolled. They performed Hands-only CPR for 4 minutes followed by in 3 ways randomly. The first way is no feedback in the trial (non-FB Group). Second, they receive feedback in each 30 seconds (30sec-FB group). The third, they receive feedback in each 10 seconds (10sec-FB group) with enough interval time(30min) to restoration by fatigue, respectively. The feedback is simply telling by phone laypersons to push harder no matter how their compressions. Paired t-test were applied for statically analysis.
Result: The average depth of 4 minutes through is 40.9±8.3mm with non-FB group, 43.8±6.5mm with 30sec-FB group, 47.8±5.9mm with 10sec-FB group, respectively. Statically significance were seen in non-FB groups and 30 sec-FB groups(P<.05) compared with 10sec-FB group. The compression depth decreasing by time in each group, however the decrease rate is higher in non-FB group than 10sec-FB group and 30sec-FB group(P<.05), respectively.
Discussion: Chest compression depth in layperson is normally not enough. But the depth increased when they positive voice feedback. However they could keep better compressing for entire 2 minutes.
Conclusion: The continuous feedback by phone is necessary to make layperson to perform quality chest compression. Further investigation warrant.
Author Disclosures: T. Hara: None. H. Tanaka: None. H. Takahashi: None. T. Kinoshi: None. T. Shirakawa: None. S. Gotoh: None. E. Hasegawa: None.
- © 2014 by American Heart Association, Inc.