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Pilot Study Evaluating Characteristic Closure Patterns of the Normal Velopharyngeal Portal

This study has been completed.
Sponsor:
ClinicalTrials.gov Identifier:
NCT00773994
First Posted: October 16, 2008
Last Update Posted: October 18, 2017
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
Information provided by (Responsible Party):
Joseph Losee, University of Pittsburgh
  Purpose
This prospective research study seeks to determine how the normal velopharyngeal mechanism compares, both anatomically and physiologically, with previous data obtained on subjects with submucous cleft palate (SMCP) in IRB#07080395.

Condition Intervention
Cleft Palate Other: Normal Velopharyngeal Mechansim

Study Type: Interventional
Study Design: Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Pilot Study Evaluating Characteristic Closure Patterns of the Normal Velopharyngeal Portal

Resource links provided by NLM:


Further study details as provided by Joseph Losee, University of Pittsburgh:

Primary Outcome Measures:
  • Normalnormal velopharyngeal mechanism vs abnormal [ Time Frame: 2 years or 10 subjects. ]

Enrollment: 4
Study Start Date: May 2008
Study Completion Date: July 15, 2015
Primary Completion Date: July 2015 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Normal velopharyngeal mechanism
All participants in this study are normal healthy adults, who have agreed to undergo to a videofluoroscopic Televex. These participants are acceptable control subjects because they are not diagnosed with VPI and/or submucous cleft palate (SMCP) and the velopharyageal mechanism functions the same in adults as it does in children. This procedure will take approximately 3 minutes to 5 minutes.
Other: Normal Velopharyngeal Mechansim
The amount of radiation exposure that you will receive from this procedure is about 0.3 rem to the head and neck, with minimal exposure of the other body areas.

Detailed Description:

Televex videofluoroscopy utilizes real-time, x-ray imaging to visualize the velopharyngeal port from multiple views or planes. The views generally utilized include the lateral, base and frontal. This technique requires the subject to provide specific speech patterns, as presented by a speech pathologist, while a radiologist obtains adequate views of the velopharyngeal (VP) port. Each procedure will take about 3 to 5 minutes. Fluoroscopic imaging is provided only during speech tasks and swallowing limiting radiation exposure.

1) The radiologist begins by taking a lateral view while speaking, which allows viewing of the velum and posterior pharyngeal wall during speech production, as well as evaluation of cranial base angle, size and location of adenoid tissue, velar length, velar thickness and velar stretch. 2) The speech pathologist gives the subject barium sulfate contrast, approximately 2 to 4 oz, to swallow, which allows for better structure delineation, as well as the confirmation of the presence of palatal fistulae if barium passes through the palate during swallowing. 3) The speech pathologist places the subject in a supine position and barium sulfate is then instilled into the nasal passages bilaterally via syringe, approximately 5 ml. approximately 2. 5 ml in each nostril. This allows for nasopharyngeal coating of structures. 4) The speech pathologist then places the subject in the prone on the table and positioned into a sphinx position with head and neck extended and forearms and palms flat on the fluoroscopic table. The head, shoulders and neck are positioned to find the base view of the velopharyngeal port. This view affords the ability to obtain velopharyngeal closure patterns and size of velopharyngeal defect similar to that of nasopharyngoscopy. 5) The next view obtained by the radiologist is the frontal or anterior-posterior. This is obtained with the head/neck extended to allow for evaluation of the degree of lateral pharyngeal wall motion. 6) The final view obtained by the radiologist is a repeat of the initial lateral view this time with the nasopharyngeal coating in place. This can be beneficial in confirming VPI in the presence of a small VP gap. During the coated lateral view blowing of barium through the VP port can be observed. Additionally if barium is not dissipated during velopharyngeal closure this can be indicative of anatomic VPI. This is all done in the radiology department and takes approximately 3 minutes to 5 minutes.

  Eligibility

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Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Criteria

Inclusion Criteria:

  • All subjects for this study are adults.
  • In this study, the most significant risk is that of radiation exposure, which for Televex videofluoroscopy, is comparable to a single undergoing a single x-ray study, and is significantly less than most CT scans.
  • There are no risks to a fetus or pregnant subject involved in this study, nor are there any interventions involved in the research that may be associated with reproductive risks, because all female participants will be given a urine pregnancy test prior to undergoing the Televex Videofluoroscopy.
  • All participants will wear protective lead torso and pelvic shields, which are standard for all personnel in a room where a radiologic evaluation is being performed.

Exclusion Criteria:

  • The subjects for this study are all adult.
  • None of the participants will be children because we are looking for subjects who have reached skeletal maturity which happens around the age of 18 years old
  • Any positive urine pregnancy test results would exclude the female subject from this study.
  Contacts and Locations
Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00773994


Locations
United States, Pennsylvania
Children's Hospital of Pittsburgh of UPMC
Pittsburgh, Pennsylvania, United States, 15213
Sponsors and Collaborators
University of Pittsburgh
Investigators
Principal Investigator: Jennifer Szczepaniak, BS Children's Hospital of Pittsburgh of UPMC
  More Information

Responsible Party: Joseph Losee, Ross H. Musgrave Professor of Pediatric Plastic Surgery Executive Vice-Chair and Program Director Department of Plastic Surgery University of Pittsburgh Medical Center, University of Pittsburgh
ClinicalTrials.gov Identifier: NCT00773994     History of Changes
Other Study ID Numbers: 07100381
First Submitted: October 15, 2008
First Posted: October 16, 2008
Last Update Posted: October 18, 2017
Last Verified: October 2017

Keywords provided by Joseph Losee, University of Pittsburgh:
anterior palatal eminence
palatal elevation above the maxillary plane
anterior uvular prolapse
"inverted-V" present in base view.

Additional relevant MeSH terms:
Cleft Palate
Jaw Abnormalities
Jaw Diseases
Musculoskeletal Diseases
Maxillofacial Abnormalities
Craniofacial Abnormalities
Musculoskeletal Abnormalities
Stomatognathic Diseases
Mouth Abnormalities
Mouth Diseases
Stomatognathic System Abnormalities
Congenital Abnormalities