To avoid acute variceal bleeding in cirrhosis, current guidelines recommend screening for high-risk esophageal varices (EVs) by determining variceal size and identifying red wale markings. However, visual measurements of EV during routine endoscopy are often inaccurate.

中文翻译：

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活检钳可用于体外测量食管静脉曲张。

为了避免肝硬化引起的急性静脉曲张出血，目前的指南建议通过确定静脉曲张大小和识别红色条纹来筛查高风险食管静脉曲张（EV）。然而，常规内窥镜检查期间 EV 的目视测量通常不准确。