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Can MRI Replace Nasopharyngoscopy in the Evaluation of Velopharyngeal Insufficiency?
Cleft Palate-craniofacial Journal 2024 March 16
OBJECTIVE: To investigate whether flexible nasopharyngoscopy, when performed in addition to magnetic resonance imaging (MRI), influences the type of surgery selected or success of surgery in patients with velopharyngeal insufficiency (VPI).
DESIGN: Cohort study.
SETTING: A metropolitan children's hospital.
PATIENTS: Patients with non-syndromic, repaired cleft palate presenting for management of VPI.
INTERVENTIONS: MRI and nasopharyngoscopy or MRI alone for preoperative imaging of the velopharyngeal mechanism.
MAIN OUTCOME MEASURES: (1) Surgical selection and (2) resolution of hypernasality. All speech, MRI, and nasopharyngoscopy measurements were performed by raters blinded to patients' medical and surgical history.
RESULTS: Of the 25 patients referred for nasopharyngoscopy, 76% completed the exam. Of the 41 patients referred for MRI, the scan was successfully completed by 98% of patients. Completion of nasopharyngoscopy was significantly (p=0.01) lower than MRI. Surgical selection did not significantly differ (p=0.73) between the group receiving MRI and nasopharyngoscopy and the group receiving MRI alone, nor was there a significant difference between these groups in the proportion of patients achieving resolution of hypernasality postoperatively (p=0.63). Percent total velopharyngeal closure assessments on nasopharyngoscopy and MRI were strongly correlated (r=0.73).
CONCLUSIONS: In patients receiving MRI as part of their preoperative VPI evaluation, the addition of nasopharyngoscopy did not result in a difference in surgical selection or resolution of hypernasality. Routine inclusion of nasopharyngoscopy may not be necessary for the evaluation of velopharyngeal anatomy when MRI is available.
DESIGN: Cohort study.
SETTING: A metropolitan children's hospital.
PATIENTS: Patients with non-syndromic, repaired cleft palate presenting for management of VPI.
INTERVENTIONS: MRI and nasopharyngoscopy or MRI alone for preoperative imaging of the velopharyngeal mechanism.
MAIN OUTCOME MEASURES: (1) Surgical selection and (2) resolution of hypernasality. All speech, MRI, and nasopharyngoscopy measurements were performed by raters blinded to patients' medical and surgical history.
RESULTS: Of the 25 patients referred for nasopharyngoscopy, 76% completed the exam. Of the 41 patients referred for MRI, the scan was successfully completed by 98% of patients. Completion of nasopharyngoscopy was significantly (p=0.01) lower than MRI. Surgical selection did not significantly differ (p=0.73) between the group receiving MRI and nasopharyngoscopy and the group receiving MRI alone, nor was there a significant difference between these groups in the proportion of patients achieving resolution of hypernasality postoperatively (p=0.63). Percent total velopharyngeal closure assessments on nasopharyngoscopy and MRI were strongly correlated (r=0.73).
CONCLUSIONS: In patients receiving MRI as part of their preoperative VPI evaluation, the addition of nasopharyngoscopy did not result in a difference in surgical selection or resolution of hypernasality. Routine inclusion of nasopharyngoscopy may not be necessary for the evaluation of velopharyngeal anatomy when MRI is available.
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