MedTrace Logo

Diaphragmatic Height Index: the New Diagnostic Test for Phrenic Nerve Dysfunction

NCT01450917 · Status: COMPLETED · Type: OBSERVATIONAL · Enrollment: 245

Last updated 2011-10-12

No results posted yet for this study

Summary

Diaphragmatic contraction is controlled by phrenic nerve which consists of anterior rami of 3rd- 5th cervical nerve roots. Usually, It can't be evaluated from history taking and physical examination. Thus the diaphragmatic elevation on chest radiograph is assumed to identify the phrenic nerve dysfunction. Normally, the right diaphragm is higher than the left side about 1.5 ± 0.9 centimeters or 0.5 ± 0.3 time of vertebral height. Although there are several methods to determine the diaphragmatic elevation from previous studies, the accuracy, reliability, intra and inter-observer variation are problem.

Neurotization is the effective procedure to restore upper extremity function in root avulsion type. Phrenic nerve is one of the common donor nerves which used for this procedure. But sometimes, concomitant injury of this nerve can occur. Therefore, the investigators established "Diaphragmatic height index (DHI)" from chest radiograph to use as the diagnostic test for phrenic nerve dysfunction.

Conditions

  • Respiratory Paralysis

Sponsors & Collaborators

  • Mahidol University

    lead OTHER

Principal Investigators

  • Saichol Wongtrakul, MD · Mahidol University

Eligibility

Min Age
18 Years
Max Age
60 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2009-09-30
Primary Completion
2009-10-31
Completion
2009-10-31

More Related Trials

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 NCT01450917 on ClinicalTrials.gov