Appropriateness of mechanical chest compression position by skin and bony landmark in Cardiopulmonary Resuscitation in Nan populations
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Abstract
BACKGROUND: The American Heart Association suggests chest compressions on the lower half of the sternum in adults in cardiac arrest. However, some studies suggest that other sites may be more appropriate. In Nan Hospital, we use mechanical chest compression equipment (Corpuls quadboard and LUCAS 3 v 3.1) instead of manual compression.
OBJECTIVE: To find the optimal site to adjust the stamp of mechanical CPR in the Nan population
METHODS: The retrospective cross-sectional study included Nan Hospital patients who underwent chest computed tomography with the contrast between January 1, 2015, and December 31, 2019. The skin length from the tip of the xiphoid to the landmarks of the heart, liver, and stomach was found and presented with the mean+ SD for normal distribution and the median (min, max) if not. Normal distribution was confirmed by Kolmogorov-Smirnova. Find the site to adjust the stamp of mechanical chest compression that includes the widest part of the left ventricle, which does not cover the liver and stomach.
RESULTS: There were 333 patients in this study. The length of tip of xyphoid to the sternal notch, mid-sternum, the lower half of mid-sternum, the uppermost part of the heart, left ventricular outflow tract, left ventricular widest part, the uppermost part of the stomach, and liver were: 188.8 + 18.31, 94.4 + 9.16, 47.2 + 4.58, 108.8 + 16.75, 61.08 + 15.85, 44.25 + 15.92, 0.66 + 21.45, and 25.93 (-24.7, 91.42) millimeter.
CONCLUSION AND RECCOMMENDATION: Based on our findings, Corpuls quadboard’s stamp center should be applied 1.87 cm above the mid-lower half of the sternum and the Lucas 3 v 3.1 ‘s stamp center should be applied at the mid-sternum.
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