探讨基于线上自主学习和考核的产科超声教学模式对规范化培训学员识别产科超声标准切面能力的效果。

2021年3月纳入21名在北京协和医院超声医学科参加住院医师规范化培训的学员，应用调查问卷收集学员对产科超声的教学需求，以胎儿颅脑、胸腹腔和心脏3个部位的标准切面及标志性结构为培训内容录制讲课视频。学员通过线上自主学习形式，完成标准切面强化培训及考核。应用χ2检验对比培训前后学员答题正确率的差异。

大部分学员（95.2%，20/21）认为产科超声培训非常重要并且非常愿意参加；考核题目包含胎儿颅脑、胸腹腔、心脏3个部位标准切面的标志性结构识别共22题。培训前学员答题总正确率为79.9%（369/462），培训后学员答题总正确率提高为88.7%（410/462），其中，学员对心脏标志性结构识别的正确率提高11.5%（87.7% vs 76.2%），培训前后答题正确率比较，差异具有统计学意义（χ²=11.28，P=0.001）。

基于线上自主学习和考核的标准切面强化培训，提高了规范化培训学员对胎儿颅脑、胸腹腔和心脏系统标准切面中标志性结构的识别能力，可作为产科超声培训的有效手段。

To explore the effect of obstetric ultrasound teaching mode based on online self-learning and examination on the standardized training ability to identify standard sections of obstetric ultrasound.

Twenty-one trainees attending standardized training at the Ultrasonography Department of Peking Union Medical College Hospital were enrolled in March 2021. A questionnaire was used to collect trainees' needs for obstetric ultrasound teaching. The fetal cranial, thoracoabdominal, and cardiac standard planes and symbolic structures were selected as training contents to record videos for teaching. Trainees completed the intensive training and assessment questionnaire through online self-learning. Chi-square test was used to compare the accuracy rate of the trainees before and after training.

Most trainees (95.2%, 20/21) considered the obstetric ultrasound training very important and were quite willing to attend it. There were a total of 22 questions on the identification of fetal cranial, thoracoabdominal, and cardiac standard planes and symbolic structures. The accuracy rates before and after the training were 79.9% (369/462) and 88.7% (410/462), respectively. The accuracy rate for fetal cardiac structure recognition was significantly increased by 11.5% after the training (87.7% vs 76.2%, χ²=11.28, P=0.001).

The intensive training based on online self-learning and examination can improve the ability of trainees to identify fetal cranial, thoracoabdominal and cardiac standard planes and symbolic structures, which can be used as an effective method during obstetric ultrasound training.