Department of Anaesthesiology, University Hospital Aachen, Rheinisch-Westfälische Technische Hochschule Aachen University, Germany.
Resuscitation. 2010 Jan;81(1):53-8. doi: 10.1016/j.resuscitation.2009.10.005. Epub 2009 Nov 12.
Quality of external chest compression (ECC) is a key component of Basic Life Support. Different approaches to improve rescuers' performance have been evaluated, but few attempts have been made to invent simple devices to improve performance. This study evaluates a new visual feedback system for ECC for healthcare professionals.
Ninety-three healthcare professionals volunteered (14 emergency medical technicians, 45 paramedics, 34 physicians; age 32+/-7.2 (range 21-61); 72% male) in this randomized cross-over study. All subjects were tested on a manikin (Skillreporter ResusciAnne, Laerdal, Stavanger, Norway) in identical mock cardiac arrest scenario and asked to perform 2 min of continuous ECC (secured airway): Group A (n=46): ECC with device first, followed by ECC without device a minimum of 45 min later; group B (n=47): vice versa. Primary endpoints: mean compression rate 90-120 min(-1); mean compression depth 38-51 mm. Data were analyzed using repeated measure logistic regression model for binary categorized endpoints and repeated measure ANOVA test for continuous endpoints.
Correct compression depth was achieved by 45.2% of subjects (95%-CI: 30.5-64.9 mm) without vs. 73.1% (95%-CI: 40.3-57.4 mm) with device (p<0.001); correct compression rate was achieved by 62.4% (95%-CI: 78-147.8 min(-1)) without vs. 94.6% (95%-CI: 87.3-126.6 min(-1)) with device (p<0.001). Overall, 85% of the subjects thought the feedback system was helpful and 80.6% would use it if available.
The new visual feedback device significantly improved ECC performance (compression rate and depth) by healthcare professionals in simulated cardiac arrest. Most participants found the device easy to use.
外部胸部按压（ECC）的质量是基本生命支持的关键组成部分。已经评估了不同的方法来提高救援人员的表现，但很少有人尝试发明简单的设备来提高性能。本研究评估了一种新的用于医疗保健专业人员的 ECC 视觉反馈系统。
93 名医疗保健专业人员自愿参加了这项随机交叉研究（14 名急救技师、45 名护理人员、34 名医生；年龄 32+/-7.2（范围 21-61）；72%为男性）。所有受试者均在模拟心搏骤停场景中的人体模型（Skillreporter ResusciAnne，Laerdal，Stavanger，挪威）上进行测试，并要求进行 2 分钟的连续 ECC（气道固定）：A 组（n=46）：先使用设备进行 ECC，至少 45 分钟后再无设备进行 ECC；B 组（n=47）：反之亦然。主要终点：平均按压频率 90-120 min(-1)；平均按压深度 38-51 mm。使用二元分类终点的重复测量逻辑回归模型和连续终点的重复测量方差分析测试对数据进行分析。
无设备时，45.2%的受试者（95%-CI：30.5-64.9 mm）达到正确的按压深度，而有设备时为 73.1%（95%-CI：40.3-57.4 mm）（p<0.001）；无设备时，62.4%（95%-CI：78-147.8 min(-1))达到正确的按压频率，而有设备时为 94.6%（95%-CI：87.3-126.6 min(-1))（p<0.001）。总体而言，85%的受试者认为反馈系统有帮助，如果有，80.6%的人会使用。
新的视觉反馈设备显著提高了医疗保健专业人员在模拟心搏骤停中的 ECC 性能（按压频率和深度）。大多数参与者发现该设备易于使用。
