MOESM1 of Interpretation errors in focused cardiac ultrasound by novice pediatric emergency medicine fellow sonologists

Additional file 1: Phase S1. Missed diminished function (False Negative). Parasternal long axis view. Image acquisition made interpretation difficult. The gain setting is a bit dark to visualize the interventricular septum and the anterior leaflet of the mitral valve. The captured video would be improved by including the inferior portion of left ventricle and apex. Phase S2. Missed diminished function (False Negative). Parasternal long axis view. Image acquisition made interpretation difficult. Similar to Additional file Phase 1(a) gain setting is a bit dark and the left ventricle is not well imaged. Phase S3. Normal interpreted as effusion (False Positive). Subxiphoid view. Image acquisition made interpretation difficult, again with the gain setting too dark. Trace or trivial amount of pericardial effusion was considered negative for our study; it was listed as â None/ Trivialâ on the data collection form. Phase S4. Missed pericardial effusion (False Negative). Parasternal long axis view. Image acquisition was adequate, while gain could be increased. This was a gross operator interpretation error.

附加文件1：
S1期：漏诊的功能减退（假阴性（False Negative））。采用胸骨旁长轴切面（Parasternal long axis view）采集图像，图像采集导致阅片困难：增益设置（gain setting）偏暗，难以清晰显示室间隔（interventricular septum）与二尖瓣前叶（anterior leaflet of the mitral valve）；若优化该采集视频，需纳入左心室（left ventricle）下壁及心尖（apex）结构。
S2期：漏诊的功能减退（假阴性（False Negative））。采用胸骨旁长轴切面（Parasternal long axis view）采集图像，图像采集影响阅片效果，与附加文件S1期情况类似：增益设置偏暗且左心室显像不佳。
S3期：正常征象被误判为积液（假阳性（False Positive））。采用剑突下切面（Subxiphoid view）采集图像，图像采集导致阅片困难，同样存在增益设置过暗的问题。本研究将微量或少量心包积液（pericardial effusion）判定为阴性，数据收集表中将其标注为"无/微量"。
S4期：漏诊心包积液（假阴性（False Negative））。采用胸骨旁长轴切面（Parasternal long axis view）采集图像，图像采集质量达标，但可适当提高增益设置。此为明显的操作者判读失误。