住院环境中手持式腹部超声诊断时间研究

This outcome evaluates the clinical efficiency of the diagnostic workflow by measuring the time interval (in minutes) required to complete the initial diagnostic imaging.

The exact measurement endpoints are defined by the study arm:

Start point (Both arms): The exact time the gastroenterology consultation is initiated.

End point (Intervention group): Defined as the interval from the consultation request to the first modality that established the correct diagnosis of the targeted organs matching the final electronic medical record. If the bedside POCUS findings accurately identified the primary pathology, the POCUS timestamp was used; otherwise, the timestamp of the subsequent formal radiology report was utilized.

End point (Control group): The execution of the first formally scheduled diagnostic imaging study (e.g., computed tomography [CT], magnetic resonance imaging [MRI], or conventional cart-based ultrasound) ordered as part of standard care following the consultation.

该结局指标通过测量会诊后住院时长，评估干预措施对医院总体资源利用的影响。

会诊后住院时长定义为从胃肠病学会诊确切启动日期（基线）至患者正式出院日期的时间间隔（以天为单位）。

将同时收集干预组（HUD）和对照组（标准护理）的数据。通过组间差异分析，确定与干预相关的加速床旁诊断工作流程是否能有效减少剩余住院天数。为处理临床数据的偏态分布，比较结果将采用中位数天数配合四分位距（IQR）及校正率比进行报告。

该结果评估了使用手持超声设备（HUD）进行的初步即时诊断评估的诊断准确性。准确性通过将HUD结果（索引测试）与最终确定性诊断（参考标准）进行比较来确定。

索引测试：由顾问在床旁HUD检查后立即记录的主要病理结果。

参考标准：出院前确立的目标器官（例如胆道、肝脏、胰腺）的最终临床诊断。这通过后续的正式影像学检查（例如全面超声、CT、MRI）确认。

准确性报告为HUD评估与参考标准正确匹配的百分比。