From the University of Cologne, Faculty of Medicine and University Hospital of Cologne, Department of Anaesthesiology and Intensive Care Medicine (HE, FL, NA, SW, RS, BWB, WAW); University of Cologne, Faculty of Medicine and University Hospital of Cologne, Institute of Medical Statistics and Computational Biology (IMSB), Cologne, (SH) Germany.
Eur J Anaesthesiol. 2020 Apr;37(4):294-302. doi: 10.1097/EJA.0000000000001177.
Despite intensive research, cardiac arrest remains a leading cause of death. It is of paramount importance to undertake every possible effort to increase the overall quality of cardiopulmonary resuscitation (CPR) and improve patient outcome. CPR initiated by a bystander is one of the key factors in survival of such an incident. Telephone-assisted CPR (T-CPR) has proved to be an effective measure in improving layperson resuscitation.
We hypothesised that adding video-telephony to the emergency call (video-CPR, V-CPR) enhances the quality of layperson resuscitation.
This randomised controlled simulation trial was performed from July to August 2018. Laypersons were randomly assigned to video-assisted (V-CPR), telephone-assisted (T-CPR) or control (unassisted CPR) groups. Participants were instructed to perform first aid on a mannequin during a simulated cardiac arrest.
This study was conducted in the Skills Lab of the University Hospital of Cologne.
One hundred and fifty healthy adult volunteers.
The participants received a smartphone to call emergency services, with Emergency Eye video-call in V-CPR group, and normal telephone functionality in the other groups. T-CPR and V-CPR groups received standardised CPR assistance via phone.
Our primary endpoint was resuscitation quality, quantified by compression frequency and depth, and correct hand position.
Mean compression frequency of V-CPR group was 106.4 ± 11.7 min, T-CPR group 98.9 ± 12.3 min (NS), unassisted group 71.6 ± 32.3 min (P < 0.001). Mean compression depth was 55.4 ± 12.3 mm in V-CPR, 52.1 ± 13.3 mm in T-CPR (P < 0.001) and 52.9 ± 15.5 mm in unassisted (P < 0.001). Total percentage of correct chest compressions was significantly higher (P < 0.001) in V-CPR (82.6%), than T-CPR (75.4%) and unassisted (77.3%) groups.
V-CPR was shown to be superior to unassisted CPR, and was comparable to T-CPR. However, V-CPR leads to a significantly better hand position compared with the other study groups. V-CPR assistance resulted in volunteers performing chest compressions with more accurate compression depth. Despite reaching statistical significance, this may be of little clinical relevance.
ClinicalTrials.gov (Identifier: NCT03527771).
尽管进行了深入的研究，心脏骤停仍然是导致死亡的主要原因之一。尽一切可能努力提高心肺复苏术（CPR）的整体质量并改善患者预后至关重要。旁观者发起的 CPR 是此类事件中患者存活的关键因素之一。电话辅助 CPR（T-CPR）已被证明是提高非专业人员复苏能力的有效措施。
我们假设在紧急呼叫中添加视频电话（视频-CPR，V-CPR）会提高非专业人员的复苏质量。
这是一项于 2018 年 7 月至 8 月进行的随机对照模拟试验。将非专业人员随机分配到视频辅助（V-CPR）、电话辅助（T-CPR）或对照组（无辅助 CPR）。参与者被指示在模拟心脏骤停期间对模型进行急救。
该研究在科隆大学医院的技能实验室进行。
150 名健康成年志愿者。
参与者使用智能手机拨打急救电话，V-CPR 组使用紧急眼视频电话，其他组使用普通电话功能。T-CPR 和 V-CPR 组通过电话接受标准化的 CPR 协助。
我们的主要终点是复苏质量，通过压缩频率和深度以及正确的手部位置来量化。
V-CPR 组的平均压缩频率为 106.4±11.7 min，T-CPR 组为 98.9±12.3 min（无统计学意义），无辅助组为 71.6±32.3 min（P<0.001）。V-CPR 的平均压缩深度为 55.4±12.3mm，T-CPR 为 52.1±13.3mm（P<0.001），无辅助组为 52.9±15.5mm（P<0.001）。正确的胸外按压百分比 V-CPR 组（82.6%）显著高于 T-CPR 组（75.4%）和无辅助组（77.3%）（P<0.001）。
与无辅助 CPR 相比，V-CPR 显示出优越性，与 T-CPR 相当。然而，与其他研究组相比，V-CPR 导致志愿者的手部位置明显更好。V-CPR 辅助可使志愿者更准确地进行按压深度的胸外按压。尽管达到了统计学意义，但这可能没有什么临床意义。
ClinicalTrials.gov（标识符：NCT03527771）。
