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Diagnostic Accuracy of Using Point-of-care Ultrasonography for Confirming Nasogastric Tube Placement

NCT06821737 · Status: ACTIVE_NOT_RECRUITING · Type: OBSERVATIONAL · Enrollment: 530

Last updated 2025-07-09

No results posted yet for this study

Summary

A prospective observational diagnostic study will be conducted to assess the sensitivity and specificity of ultrasound in verifying the correct nasogastric tube placement, using X-ray as the reference standard.

Conditions

  • Ultrasound
  • Nasogastric Tube
  • Nasogastric Tube Placement

Interventions

DEVICE

Diagnostic ultrasound

A portable wireless ultrasound system (Vscan Air, General Electric Healthcare) with dual probes-linear array (3-12 MHz) for neck scanning and curved array (2-5 MHz) for subxiphoid scanning-will be used. The linear probe is placed transversely on the anterior neck, slid left at the thyroid level to focus on the esophagus, then rotated for longitudinal views. The curved probe is applied subxiphoid, using the liver as a landmark, and tilted left to image the stomach. A positive result is confirmed by visualizing the NGT shadow in the esophagus and stomach, followed by dynamic upsurge fogging after injecting 50cc of air. Ultrasonography and X-ray results will be compared.

DEVICE

Diagnostic X-ray

This study will employ chest radiography as the reference standard for verification of correct nasogastric tube placement. Radiographic imaging will be conducted following NGT insertion and interpreted by physicians to verify positional accuracy.

Sponsors & Collaborators

  • Pamela Youde Nethersole Eastern Hospital

    lead OTHER

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2025-04-28
Primary Completion
2026-10-31
Completion
2028-10-31
FDA Device
Yes

Countries

  • Hong Kong

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT06821737 on ClinicalTrials.gov