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Aim <p>To compare the effectiveness of ultrasonography (USG) and auscultation in verifying nasogastric tube (NGT) placement using a cadaveric model.</p> Methods <p>Nine emergency medicine (EM) residents evaluated NGT placement in torso cadavers using both auscultation and ultrasonography (B-mode and Doppler). Sensitivity, specificity, predictive values, and inter-observer agreement (Cohen’s κ) were calculated.</p> Results <p>Among 72 NGT placements, auscultation had a sensitivity of 86.1% and specificity of 97.2%, while USG achieved 88.9% sensitivity and 91.7% specificity. Cohen’s κ indicated substantial agreement for auscultation (κ = 0.75) and almost perfect agreement for USG (κ = 0.86).</p> Conclusion <p>Ultrasonography demonstrates high diagnostic accuracy and interobserver reliability, making it a viable alternative to radiographic confirmation, particularly when X-ray is unavailable or infeasible.</p>

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Evaluation of ultrasonography as an alternative method for nasogastric tube placement verification: a cadaveric study

  • 期刊论文

  • 发表日期：

    2026年4月20日

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  • Omer Yusuf Erdurmus,
  • Şefik Meriç Uysal,
  • Ahmet Burak Oğuz,
  • Necati Salman,
  • Yaşar Çatal,
  • Sinan Genç,
  • Ayça Koca,
  • Muge Gunalp Eneyli

摘要

Aim

To compare the effectiveness of ultrasonography (USG) and auscultation in verifying nasogastric tube (NGT) placement using a cadaveric model.

Methods

Nine emergency medicine (EM) residents evaluated NGT placement in torso cadavers using both auscultation and ultrasonography (B-mode and Doppler). Sensitivity, specificity, predictive values, and inter-observer agreement (Cohen’s κ) were calculated.

Results

Among 72 NGT placements, auscultation had a sensitivity of 86.1% and specificity of 97.2%, while USG achieved 88.9% sensitivity and 91.7% specificity. Cohen’s κ indicated substantial agreement for auscultation (κ = 0.75) and almost perfect agreement for USG (κ = 0.86).

Conclusion

Ultrasonography demonstrates high diagnostic accuracy and interobserver reliability, making it a viable alternative to radiographic confirmation, particularly when X-ray is unavailable or infeasible.