Brasileiro Augusto Cézar Lacerda, Silva Aeudson Víctor Cunha Guedes E, Garcia Ariana Lacerda, Furtado Beatriz Ribeiro Coutinho de Mendonça, Araújo Frederico Augusto Polaro, Diniz Laís Nóbrega, Silva Leonardo César Maia E, Lima Lorena Agra da Cunha
Faculdade de Medicina Nova Esperança - FAMENE, João Pessoa, PB, Brasil.
J Vasc Bras. 2023 Jul 17;22:e20230038. doi: 10.1590/1677-5449.202300382. eCollection 2023.
Obtaining an adequate image of the needle by ultrasound reduces complications resulting from punctures, increasing patient safety and reducing hospitalization costs.
To verify human perception in relation to number of pixels, while also identifying the best puncture angle and which needle should be used, and to evaluate whether there is a difference if needle visualization software is used.
20 images were analyzed by 103 students who classified them as being sufficient or insufficient and were compared with the quality observed using photoshop. We evaluated whether there were differences between puncture angles of less than 45º and more than 45º, between IV catheter and introducer needles, and between images obtained with and without visualization software.
There was a higher percentage of sufficient ratings for images those that had more than 60 pixels and when the puncture angle was less than 45º, with significant associations between students' evaluations and each of these groups (p < 0.001). The percentages of images classified as sufficient were higher for images in which a IV catheter was used and also higher for those using the needle visualization software, with significant associations between the results for students' classifications and each of these groups (p < 0.001).
The human eye classifies an image as sufficient according to higher numbers of pixels. Images of punctures at angles smaller than 45º in relation to the surface, of punctures performed with a IV catheter, and when using specific visualization software are also better detected by the human eye.
通过超声获得足够清晰的穿刺针图像可减少穿刺相关并发症，提高患者安全性并降低住院费用。
验证人类对像素数量的感知，同时确定最佳穿刺角度以及应使用哪种穿刺针，并评估使用穿刺针可视化软件是否存在差异。
103名学生对20张图像进行分析，将其分类为足够清晰或不够清晰，并与使用Photoshop观察到的质量进行比较。我们评估了小于45°和大于45°的穿刺角度之间、静脉留置针和穿刺引导针之间以及使用和不使用可视化软件获得的图像之间是否存在差异。
对于像素超过60个的图像以及穿刺角度小于45°的图像，足够清晰评级的百分比更高，学生的评估与这些组中的每一组之间存在显著关联（p < 0.001）。对于使用静脉留置针的图像以及使用穿刺针可视化软件的图像，分类为足够清晰的图像百分比更高，学生分类结果与这些组中的每一组之间存在显著关联（p < 0.001）。
人眼根据较高的像素数量将图像分类为足够清晰。相对于表面角度小于45°的穿刺图像、使用静脉留置针进行的穿刺图像以及使用特定可视化软件时的图像，人眼也能更好地检测到。
