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目的:观察体表激光定位可视化干预对单纯胸外按压质量的影响。方法:建立体表激光定位可视化干预模型,将我院急诊、ICU、PICU经系统CPR培训的84名医护人员,随机分为对照组和干预组各42人。两组均对模拟人进行持续的单纯胸外按压4 min,干预组同时要求在体表激光定位装置指示按压深度情况下按压。测量两组入选者双掌叠扣厚度,记录各分钟内按压次数、深度正确的按压次数以及按压前后心率、血压数值。结果:全体入选者双掌叠扣厚度为65.08±6.47 mm,两组各分钟按压频率均达到指南推荐要求,对照组各分钟按压频率及深度正确按压次数在第2 min开始显著下降(P<0.05)。干预组各分钟按压频率无统计学差异(P>0.05),而深度正确的按压次数在第3 min开始显著下降。干预组第3、4 min深度正确的按压次数比较对照组差异有统计学意义(P<0.05);两组按压后心率、收缩压均较按压前显著增高(P<0.05),但组间比较无统计学差异(P>0.05)。结论:体表激光定位干预能有效改善持续单纯胸外按压质量,且不会加剧操作者疲劳。
Objective: To observe the effect of surface laser positioning visualization intervention on the quality of simple chest compression. Methods: A visualization intervention model of laser surface location was established. Eighty-four medical staff trained in emergency department, ICU and PICU through systematic CPR training were randomly divided into control group and intervention group. Both groups were simulative continuous chest compressions for 4 min, while the intervention group also required that the body surface laser positioning device press the depth of the indication pressure. Measure the thickness of palms folded in both groups, record the number of compressions in each minute, the depth of the correct number of compressions, and the heart rate and blood pressure before and after pressing. Results: The thickness of palms of both hands was 65.08 ± 6.47 mm, and the press frequency of each group reached the guideline recommendation. The press frequency and the depth of correct press in every minute of the control group decreased significantly from the 2nd minute (P <0.05) ). There was no significant difference in the press frequency between the two groups in the intervention group (P> 0.05), while the depth of the correct press was significantly decreased at the 3rd minute. In the intervention group, the correct compression times at 3 and 4 min were significantly different from those in the control group (P <0.05). The heart rate and systolic pressure of the two groups were significantly higher than those before the compression (P <0.05) No statistical difference (P> 0.05). CONCLUSIONS: Body surface laser positioning intervention can effectively improve the quality of continuous chest compressions without increasing operator fatigue.