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Purpose <p>We aimed to explore the factors associated with a gastric volume (GV) &gt; 0.8&#xa0;mL/kg in anesthetized patients undergoing gastrointestinal endoscopy.</p> Methods <p>Patients receiving sedation for gastrointestinal endoscopy were enrolled. Gastric cross-sectional area (CSA) was measured using ultrasonography in both the supine and right lateral decubitus (RLD) positions. Actual GV was determined by measuring gastric contents aspirated during endoscopy. The primary outcome was the incidence of high-risk GV, defined as GV &gt; 0.8&#xa0;mL/kg.</p> Results <p>Among 503 patients, the incidence of high-risk GV was 15.3%. Multivariate logistic regression analysis identified diabetes (odds ratio [OR] = 5.743; 95% confidence interval [CI]: 2.040–16.166; P = 0.001), younger age (OR = 0.936; 95% CI: 0.908–0.964; P &lt; 0.001), a last meal consisting of meat (OR = 16.150; 95% CI: 4.186–62.302; P &lt; 0.001), BMI &lt; 18.5 (OR = 9.386; 95% CI: 2.640–33.377; P = 0.001), RLD CSA (OR = 1.426; 95% CI: 1.283–1.584; P &lt; 0.001), and Perlas score (OR = 4.025; 95% CI: 1.282–12.636; P = 0.017) as independent predictors of high-risk GV. The area under the receiver operating characteristic curve for RLD CSA in predicting high-risk GV was 0.861 (95% CI: 0.828–0.890, P &lt; 0.001), with an optimal cutoff value of 5.32 cm<sup>2</sup>.</p> Conclusions <p>Diabetes, younger age, consumption of meat as the last meal, BMI &lt; 18.5&#xa0;kg/m<sup>2</sup>, increased RLD CSA, and higher Perlas scores are significant predictors of high-risk GV. RLD CSA demonstrates high diagnostic accuracy for identifying patients at increased risk.</p>

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Gastric ultrasound assessment of gastric volume and related factors in patients undergoing gastrointestinal endoscopy under sedation

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年6月15日

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  • Zheng Peng,
  • Shanggeng Li,
  • Yulong Yu,
  • Xiaodan Wang,
  • Yue Wu,
  • Donghang Cao,
  • Lingyang Chen

摘要

Purpose

We aimed to explore the factors associated with a gastric volume (GV) > 0.8 mL/kg in anesthetized patients undergoing gastrointestinal endoscopy.

Methods

Patients receiving sedation for gastrointestinal endoscopy were enrolled. Gastric cross-sectional area (CSA) was measured using ultrasonography in both the supine and right lateral decubitus (RLD) positions. Actual GV was determined by measuring gastric contents aspirated during endoscopy. The primary outcome was the incidence of high-risk GV, defined as GV > 0.8 mL/kg.

Results

Among 503 patients, the incidence of high-risk GV was 15.3%. Multivariate logistic regression analysis identified diabetes (odds ratio [OR] = 5.743; 95% confidence interval [CI]: 2.040–16.166; P = 0.001), younger age (OR = 0.936; 95% CI: 0.908–0.964; P < 0.001), a last meal consisting of meat (OR = 16.150; 95% CI: 4.186–62.302; P < 0.001), BMI < 18.5 (OR = 9.386; 95% CI: 2.640–33.377; P = 0.001), RLD CSA (OR = 1.426; 95% CI: 1.283–1.584; P < 0.001), and Perlas score (OR = 4.025; 95% CI: 1.282–12.636; P = 0.017) as independent predictors of high-risk GV. The area under the receiver operating characteristic curve for RLD CSA in predicting high-risk GV was 0.861 (95% CI: 0.828–0.890, P < 0.001), with an optimal cutoff value of 5.32 cm2.

Conclusions

Diabetes, younger age, consumption of meat as the last meal, BMI < 18.5 kg/m2, increased RLD CSA, and higher Perlas scores are significant predictors of high-risk GV. RLD CSA demonstrates high diagnostic accuracy for identifying patients at increased risk.