HOW to train for telephone-CPR

Using a Mobile Phone Application Versus Telephone Assistance During Cardiopulmonary Resuscitation: A Randomized Comparative Study

INTRODUCTION

In recent years, the way CPR instructions are given has changed because of the development of new technology that allows bystanders who witness a cardiac arrest to be guided in performing CPR. This study aimed to compare the effectiveness of using a mobile phone application (app) versus telephone operator assistance in performing cardiopulmonary resuscitation (CPR) techniques in simulated settings.

METHODS

A comparative study was performed with 2 intervention groups: (1) mobile phone app and (2) telephone assistance. A total of 128 students participated and were distributed randomly into each intervention group. A CPR observation checklist and standard CPR quality parameter measurements were used for data collection.

RESULTS

The group that used the app obtained better results than the group that had telephone assistance on 5 items during CPR observation: checking if the area is secure (X²(1) = 26.81; P < 0.05), asking for help (X²(1) = 66.07; P < 0.05), opening of airways (X²(1) = 12.03; P < 0.05), checking for breathing (X²(1) = 6.10; P < 0.05), and contacting emergency services (X²(1) = 12.41; P < 0.05). Regarding the skill level of CPR, no statistically significant differences were found when comparing the 2 intervention groups (X²(1) = 0.91; P = 0.33). As for the parameters measured, there were only statistically significant differences found in the item compression fraction (U = 1,593.00; Z = -2.16; P < 0.05), with the group that used the app obtaining better results.

DISCUSSION

Better outcomes were observed in recognizing if the area was safe, asking for help, opening up the airways, checking for breathing, and calling emergency services in the mobile phone app group. However, the results indicated that there were no differences in the CPR parameters, except compression fraction, when the app was used as opposed to being guided by telephone.

Public knowledge and expectations about dispatcher assistance in out-of-hospital cardiac arrest

AIM

To assess the factors associated with the knowledge and expectations among the general public about dispatcher assistance in out-of-hospital cardiac arrest incidents.

BACKGROUND

In medical dispatch centres, emergency calls are frequently operated by specially trained nurses as dispatchers. In cardiac arrest incidents, efficient communication between the dispatcher and the caller is vital for prompt recognition and treatment of the cardiac arrest.

DESIGN

A cross-sectional observational survey containing six questions and seven demographic items.

METHOD

From January-June 2017 we conducted standardized interviews among 500 members of the general public in Norway. In addition to explorative statistical methods, we used multivariate logistic analysis.

RESULTS

Most participants expected cardiopulmonary resuscitation instructions, while few expected "help in deciding what to do." More than half regarded the bystanders present to be responsible for the decision to initiate cardiopulmonary resuscitation. Most participants were able to give the correct emergency medical telephone number. The majority knew that the emergency call would not be terminated until the ambulance arrived at the scene. However, only one-third knew that the emergency telephone number operator was a trained nurse.

CONCLUSION

The public expect cardiopulmonary resuscitation instructions from the emergency medical dispatcher. However, the majority assume it is the responsibility of the bystanders to make the decision to initiate cardiopulmonary resuscitation or not. Based on these findings, cardiopulmonary resuscitation training initiatives and public campaigns should focus more on the role of the emergency medical dispatcher as the team leader of the first resuscitation team in cardiac arrest incidents.

Simulation training to improve 9-1-1 dispatcher identification of cardiac arrest: A randomized controlled trial

BACKGROUND

The objective of this study was to test the effectiveness of simulation training, using actors to make mock calls, on improving Emergency Medical Dispatchers' (EMDs) ability to recognize the need for, and reduce the time to, telephone-assisted CPR (T-CPR) in simulated and real cardiac arrest 9-1-1 calls.

METHODS

We conducted a parallel prospective randomized controlled trial with n=157 EMDs from thirteen 9-1-1 call centers. Study participants were randomized within each center to intervention (i.e., completing 4 simulation training sessions over 12-months) or control (status quo). After the intervention period, performance on 9 call processing skills and 2 time-intervals were measured in 2 simulation assessment calls for both arms. Six of the 13 call centers provided recordings of real cardiac arrest calls taken by study participants during the study period.

RESULTS

Of the N=128 EMDs who completed the simulation assessment, intervention participants (n=66) performed significantly better on 6 of 9 call processing skills and started T-CPR 23s faster (73 vs 91s respectively, p<0.001) compared to participants in the control arm (n=62). In real cardiac arrest calls, EMDs who completed 3 or 4 training sessions were more likely to recognize the need for T-CPR for more challenging cardiac arrest calls than EMDs who completed fewer than 3, including controls who completed no training (68% vs 53%, p=0.018).

CONCLUSIONS

Simulation training improves call processing skills and reduces time to T-CPR in simulated call scenarios, and may improve the recognition of the need for T-CPR in more challenging real-life cardiac arrest calls.

CLINICAL TRIAL REGISTRATION

http://www.clinicaltrials.gov Trial # NCT01972087.