Surgical Treatment of Velopharyngeal Insufficiency

Velopharyngeal insufficiency (VPI) is a condition where the soft palate and posterior oropharynx fail to close adequately, leading to complications such as abnormal speech, nasal regurgitation and nasal emission. Although there exist many approaches to treating VPI depending on the shape and severity of the insufficiency, this chapter describes the three most frequently used and well-researched techniques: the Furlow Palatoplasty (double-opposing Z-palatoplasty), the creation and placement of a pharyngeal flap, and a sphincter pharyngoplasty. This chapter contains an introduction to VPI causes and treatment, a description of patient assessment methods, step-by-step instructions for the different operative procedures, and the recovery process.

Greater Palatal Cleft Width Predicts an Increased Risk for Unfavorable Outcomes in Cleft Palate Repair

Objective: To investigate the impact of cleft width and cleft type on the need for secondary surgery and velopharyngeal competence from a longitudinal perspective. Design: Retrospective, longitudinal study. Setting: A single multidisciplinary craniofacial team at a university hospital. Patients: Consecutive patients with unilateral or bilateral cleft lip and palate and cleft palate only (n = 313) born from 1984 to 2002, treated with 2-stage palatal surgery, were reviewed. A total of 213 patients were included. Main Outcome Measures: The impact of initial cleft width and cleft type on secondary surgery. Assessment of hypernasality, audible nasal emission, and glottal articulation from routine follow-ups from 3 to 16 years of age. The assessments were compared with reassessments of 10% of the recordings. Results: Cleft width, but not cleft type, predicted the need for secondary surgery, either due to palatal dehiscence or velopharyngeal insufficiency. The distribution of cleft width between the scale steps on a 4-point scale for hypernasality and audible nasal emission differed significantly at 5 years of age but not at any other age. Presence of glottal articulation differed significantly at 3 and 5 years of age. No differences between cleft types were seen at any age for any speech variable. Conclusions: Cleft width emerged as a predictor of the need for secondary surgery as well as more deviance in speech variables related to velopharyngeal competence during the preschool years. Cleft type was not related to the need for secondary surgery nor speech outcome at any age.

Role of Speech Aid Prosthesis as Diagnostic and Therapeutic Aid for Velopharyngeal Insufficiency Defect: A Case Report

Soft palate tumors pose the challenge during reconstructive and rehabilitating procedures. Surgical resection of these tumors leads to velopharyngeal insufficiency (VPI). The primary effects of VPI are hypernasality and air-flow escape, while the secondary effects are abnormalities in speech articulation. Surgical revision along with speech therapy is a common approach to the treatment of VPI. Prosthetic management by means of speech aid prosthesis helps to reduce resonance, nasal emission and consonants errors. This clinical report describes the different stages of rehabilitation of velopharyngeal insufficiency defect following resection of malignant melanoma of left posterior alveolar ridge and soft palate. The speech aid prosthesis helped to rehabilitate the velopharyngeal insufficiency defect and aided in the diagnosis of extent of speech function improvement by perceptual and objective methods.

Speech Outcomes Following Orticochea Pharyngoplasty in Patients With History of Cleft Palate and Noncleft Velopharyngeal Dysfunction

Objective: To report speech outcomes following Orticochea pharyngoplasty in 43 patients with cleft palate and noncleft velopharyngeal dysfunction. Design: A retrospective surgical audit of patients undergoing Orticochea pharyngoplasty between 2004 and 2012, with speech as a primary outcome measure. Setting: Patients known to a regional UK cleft center. Methods: Forty-three patients underwent Orticochea pharyngoplasty by a single surgeon in a UK regional cleft center. Twenty-one patients had undergone a prior procedure for velopharyngeal dysfunction. Pre- and postoperative speech samples were assessed blindly using the Cleft Audit Protocol for Speech-Augmented by a specialist cleft speech and language therapist, external to the team. Speech samples were rated on the following parameters: hypernasality, hyponasality, audible nasal emission, nasal, turbulence, and passive cleft speech characteristics. Statistical differences in pre- and postoperative speech scores were tested using the Wilcoxon matched-pairs signed-ranks test. Inter- and intrareliability scores were calculated using weighted Cohen κ. Results: Whole group: A statistically significant difference in pre- and postoperative scores for hypernasality ( P < .001), hyponasality ( P < .05), nasal emission ( P < .01), and passive cleft speech characteristics ( P < .01) were reported. Patients with cleft diagnoses: A statistically significant difference in scores for hypernasality ( P < .001), nasal emission ( P < .01), and passive cleft speech characteristics ( P < .01) were reported for this group of patients. Patients with noncleft diagnoses: The only parameter to demonstrate a statistically significant difference was hypernasality ( P < .01) in this group. Conclusions: Orticochea pharyngoplasty is a successful surgical procedure in treating velopharyngeal dysfunction in both the cleft and noncleft populations.

Furlow Palatoplasty: Should We Also Focus on the Size of the Nasopharynx?

Objectives: (1) To determine the incidence rate of velopharyngeal dysfunction (VPD) according to 7 speech criteria post-Furlow palatoplasty. (2) To find an anatomical measurement of the cleft palate (or combination of measurements) associated with the occurrence of VPD. Study design: Retrospective cohort study. Participants and Methods: Fifty-six patients with cleft palate ± cleft lip underwent palatoplasty with the Furlow technique at the age of 10 months. Pre-and post-palatoplasty cleft palate measurements were collected during the procedure. Three blinded speech-language pathologists (SLPs) retrospectively scored the patients from the chart data at age 4. Student t test and receiver operating characteristic curve analysis were used to evaluate the association and predictive capacity between cleft measurements and parameters (M&P) with all VPD criteria. Results: The SLPs found an incidence of VPD according to 7 criteria: hypernasality (11%), audible nasal emission (4%), nasal rustle (14%), compensatory errors (4%), impairment of speech understandability (7%), and impairment of speech acceptability (16%). The SLPs recommended a secondary surgical procedure in 5 patients (9%). A statistically significant association was found between, respectively, 17 and 5 M&P and the occurrence of compensatory errors and audible nasal emission. Our data suggest that the length of the cleft, the cleft area, and the postoperative transversal size of the nasopharynx are the best indicators of the future positivity of VPD criteria. Conclusion: The size of the postoperative transverse nasopharyngeal area during the primary cleft palate procedure may become the focus of the next generation of cleft surgeons to reduce the incidence of VPD.

Using High-Speed Nasopharyngoscopy to Quantify the Bubbling Above the Velopharyngeal Valve in Cases of Nasal Rustle

Objective: The loud and severely distorting form of audible nasal emission (commonly known as nasal turbulence or nasal rustle) typically occurs with a small velopharyngeal opening during production of pressure-sensitive consonants. The purpose of this study was to determine whether bubbling of the secretions, which commonly occurs on the superior aspect of the velopharyngeal port when there is a small opening, is a periodic process that can generate sound in the nasal cavity. Participants: Ten pediatric patients were included in the study. All participants had normal articulation and resonance but exhibited audible nasal emission characterized as nasal rustle. Measures: For each participant, high-speed video (HSV) nasopharyngoscopy and acoustic signals were recorded simultaneously. The acoustic recordings were captured in a manner similar to nasometry using nasal and oral microphones connected to a separation plate. Spectral analysis of the audio recordings and the HSV images was used to determine correlation between the acoustic and visual measurements. Results: This study showed that secretion bubbling is a periodic process and its frequency, measured from the HSV data, was also captured by the acoustic measurements. The nasal acoustic signal correlated more strongly with the video of bubbling than the oral acoustic signal in the majority of the cases where bubbling occurred. Conclusion: These findings are strong evidence that secretion bubbling plays a significant role in the mechanism that generates undesired sound in the nasal cavity. Further work is needed to determine whether this sound is perceived as nasal rustle.

Understanding Nasal Emission During Speech Production: A Review of Types, Terminology, and Causality

There are several different types of nasal emission that can occur during speech due to either velopharyngeal dysfunction or abnormal articulation in the pharynx. Nasal emission can be inaudible or very loud and distracting, depending on the size of the velopharyngeal opening and the physics of the flow. Nasal emission can be obligatory and/or compensatory (due to abnormal structure) or it can be caused by a misarticulation that results in a substitution of a pharyngeal sound for an oral sound, despite normal velopharyngeal structure. Nasal emission can occur on all pressure-sensitive phonemes or it can be phoneme-specific. Although it is generally recognized that the loud and distracting form of nasal emission (called nasal turbulence or nasal rustle) is due to a small velopharyngeal opening, the causality of the distracted sound is debated. This article provides a brief review of the types of nasal emission, the terms used to describe it, and the potential causes. This article also stresses the need for further research to clarify the causality of the sound generated by a small velopharyngeal opening.