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Diagnostic Accuracy of Capnography in Nasogastric Tube Placement

NCT05817864 · Status: RECRUITING · Type: OBSERVATIONAL · Enrollment: 390

Last updated 2024-09-05

No results posted yet for this study

Summary

A prospective observational diagnostic study will be conducted to assess the sensitivity and specificity of using capnography in detecting the correct placement of nasogastric tubes using the reference standards of radiography and measurement of aspirates for pH value.

Conditions

  • Capnography
  • Nasogastric Tube
  • Diagnostic Accuracy

Interventions

DIAGNOSTIC_TEST

Capnography

Index test: Capnography, which monitors ETCO2, the percentage concentration, or partial pressure of CO2 at the end of exhalation, will serve as the index test. It will be performed by connecting the end of the nasogastric tube with the sensor of the bedside sidestream capnography device. Placement within the airway is defined as detecting a capnogram waveform or an ETCO2 level \> 10 mmHg. Reference standard: This study will use radiography (chest/abdominal X-ray) as the reference standard for determining the correct placement of nasogastric tubes. Radiology will be performed as soon as possible and interpreted by a physician. A repeat radiography will be performed if necessary. We will also use pH-Fix-4.5-10 to determine the pH value, and its accuracy is +/- 0.2 pH with minimum increments of 0.5. A pH of 5.5 or below indicates gastric placement.

Sponsors & Collaborators

  • Hospital Authority, Hong Kong

    collaborator OTHER_GOV

  • Chinese University of Hong Kong

    lead OTHER

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2023-07-01
Primary Completion
2025-06-30
Completion
2025-12-31

Countries

  • China

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 NCT05817864 on ClinicalTrials.gov