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Singh, Davinder

https://orcid.org/0009-0004-4982-1405

Mayo Clinic

University of Arizona

Citations 22

The Levator Veli Palatini: Are all Segments Created Equal?
Perry, Jamie L. , Snodgrass, Taylor D. , Gilbert, Imani , Chee-Williams, Jessica L. , Sitzman, Thomas J. , Gilbert, Imani R , Sitzman, Thomas J , Chee-Williams, Jessica L , Snodgrass, Taylor , Perry, Jamie L , Singh, Davinder

The Cleft Palate Craniofacial Journal | August 13, 2024 | Volume: 62 | Issue: 1 | Pages: 28-34

10.1177/10556656241271666 Get It

Introduction The levator veli palatini (LVP) muscle has two segments with distinct roles in velopharyngeal function. Previous research suggests longer extravelar segments with shorter intravelar segments may lead to a more advantageous mechanism for velopharyngeal closure. The purpose of this study was to examine whether the distribution of the LVP intravelar and extravelar segments differs between children with cleft palate with and without VPI and controls. Methods The study included 97 children: 37 with cleft palate +/- lip with VPI, 37 controls, and 19 with cleft palate with normal resonance. Measures included mean LVP length, mean extravelar LVP length, and intravelar LVP length. Results Overall mean LVP length was similar ( P = .267) between controls and children with cleft palate (with and without VPI). However, there was a significant difference ( P < .001) between group for both intravelar and extravelar LVP lengths: the intravelar segment was significantly longer in those with VPI compared to controls and children with cleft palate and normal resonance; and the extravelar segment was significantly shorter in those with VPI compared to controls and children with cleft palate and normal resonance. Conclusions Results from this study demonstrate a significant difference between the distribution of the functional segments of the LVP among children with VPI, with a more disadvantageous distribution of the muscle segments among those with VPI.
Do Palatoplasty Procedures Resolve Hypernasality as Effectively as Pharyngoplasty Procedures in Patients with 22q11.2 Deletion Syndrome?
Chee-Williams, Jessica L. , Perry, Jamie L. , Sitzman, Thomas J. , Sitzman, Thomas J , Chee-Williams, Jessica L , Perry, Jamie L , Singh, Davinder

The Cleft Palate Craniofacial Journal | July 26, 2024 | Volume: 62 | Issue: 9 | Pages: 1616-1624

10.1177/10556656241266365 Get It

Objective Compare the effectiveness of palatoplasty and pharyngoplasty procedures at resolving hypernasality in patients with 22q11.2 deletion syndrome (22q). Design Retrospective cohort study. Setting Metropolitan children's hospital. Patients Fourteen patients with 22q presenting for management of velopharyngeal insufficiency. Interventions Palatoplasty or pharyngoplasty procedure. Main Outcome Measure Resolution of hypernasality 12 months postoperatively. Results Both procedure groups had a mean preoperative velopharyngeal gap of 6.2 mm during phonation. No patient who underwent palatoplasty achieved resolution of hypernasality; 1/7 patients had worse hypernasality, 4/7 had no change, and 2/7 had improved hypernasality. In contrast, hypernasality was resolved in 6/7 patients in the pharyngoplasty group, which was significantly ( P = .03) higher than the palatoplasty group. Conclusions In patients with 22q, palatoplasty procedures may be less effective than pharyngoplasty procedures at resolving hypernasality. This may be due to underlying anatomic or physiologic differences, such as increased pharyngeal depth and hypodynamic muscles.
Can MRI Replace Nasopharyngoscopy in the Evaluation of Velopharyngeal Insufficiency?
Chee-Williams, Jessica L. , Perry, Jamie L. , Snodgrass, Taylor D. , Singh, Davinder , Temkit, M’hamed , Sitzman, Thomas J. , Sitzman, Thomas J , Singh, Davinder J , Chee-Williams, Jessica L , Snodgrass, Taylor , Perry, Jamie L

The Cleft Palate Craniofacial Journal | March 15, 2024 | Volume: 62 | Issue: 7 | Pages: 1093-1102

10.1177/10556656241239459 Get It

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.
Comparative Effectiveness of Secondary Furlow and Buccal Myomucosal Flap Lengthening to Treat Velopharyngeal Insufficiency
Snodgrass, Taylor D. , Temkit, M’hamed , Singh, Davinder , Singh, Davinder J , Snodgrass, Taylor , Sitzman, Thomas J. , Perry, Jamie L. , Chee-Williams, Jessica L.

Plastic and Reconstructive Surgery - Global Open | November 3, 2023 | Volume: 11 | Issue: 11 | Pages: e5375

10.1097/gox.0000000000005375 Get It

Background: Secondary Furlow (Furlow) and buccal myomucosal flaps (BMMF) treat velopharyngeal insufficiency by lengthening the palate and retropositioning the levator veli palatini muscles. The criteria for choosing one operation over the other remain unclear. Methods: A single-center retrospective cohort study was conducted. Thirty-two patients with nonsyndromic, repaired cleft palate were included. All patients underwent a Furlow or BMMF. Outcome measures included (1) resolution of hypernasality 12 months postoperatively, (2) degree of improvement of hypernasality severity; and (3) change in velar length, as measured on magnetic resonance imaging scans obtained preoperatively and 12 months postoperatively. All measures were performed by raters blinded to participants’ medical and surgical history. Results: Hypernasality was corrected to normal in 80% of the Furlow group and in 56% of the BMMF group. Patients receiving BMMF had more severe hypernasality during preoperative speech evaluation. Both groups had a median decrease of two scalar rating points for severity of hypernasality (P = 0.58). On postoperative magnetic resonance imaging, patients who underwent Furlow had a median increased velar length of 6.9 mm. Patients who received BMMF had a median increased velar length of 7.5 mm. There was no statistically significant difference between groups regarding increase in velar length (P = 0.95). Conclusions: Furlow and BMMF procedures increase velar length with favorable speech outcomes. The same degree of improvement for hypernasality was observed across groups, likely explained by the similar increase in velar length achieved. Anatomic changes in palate length and levator veli palatini retropositioning persist 1 year after surgery.
Experiences of Hispanic Safety Net Clinic Patients With Diabetes During the COVID-19 Pandemic
Vickery, Katherine Diaz , Novotny, Paul J. , Ford, Becky R., Lantz, Kiley, Kavistan, Silvio, Hernandez, Valentina, Sia, Irene G. , Vickery, Katherine D , Singh, Davinder , Sia, Irene G , Singh, Davinder , Wieland, Mark L.

The Science of Diabetes Self-Management and Care | February 4, 2022 | Volume: 48 | Issue: 2 | Pages: 87-97

10.1177/26350106221076037 Get It

Purpose: The purpose of this study was to characterize the material, health (general and diabetes-specific), and social impacts of the COVID-19 pandemic on Hispanic adults with type 2 diabetes who did not experience COVID-19 infection. Methods: This cross-sectional and longitudinal study used surveys within a clinical trial of 79 Hispanic adult clinic patients with type 2 diabetes. Cross-sectional measures included the Coronavirus Anxiety Scale, items from the Coronavirus Impact Scale, and the Pandemic Impacts Inventory. Longitudinal measures included the Summary of Diabetes Self-Care, health care utilization, and measures of diabetes self-efficacy, social support, and quality of life. Results: Participants were majority low-income, Spanish-speaking females with poor diabetes control. Coronavirus anxiety was low despite majority of participants having an affected family member and frequent access barriers. More than half of participants reported moderate/severe pandemic impact on their income. Diabetes self-care behaviors did not change between prepandemic and pandemic measures. Diabetes self-efficacy and quality of life improved despite fewer diabetes-related health care visits. Conclusions: Despite high levels of access barriers, financial strain, and COVID-19 infection of family members, Hispanic adults with type 2 diabetes continued to prioritize their diabetes self-management and demonstrated substantial resilience by improving their self-efficacy and quality of life.
An Analysis of Procedural Medicare Reimbursement Rates in Craniofacial Plastic Surgery: 2000–2019
Thornburg, Danielle A. , Chow, Nathan , Haglin, Jack M. , Chow, Nathan A , Gupta, Nikita , Singh, Davinder

Plastic and Reconstructive Surgery - Global Open | May 7, 2021 | Volume: 8 | Issue: 9S | Pages: 33-33

10.1097/01.gox.0000720448.94083.2f Get It

The Effectiveness of Palate Re-Repair for Treating Velopharyngeal Insufficiency: A Systematic Review and Meta-Analysis
Kurnik, Nicole M. , Weidler, Erica M. , Lien, Kari, Cordero, Kelly Nett , Chee-Williams, Jessica L. , Temkit, M’hamed , Beals, Stephen P., Singh, Davinder , Sitzman, Thomas J. , Sitzman, Thomas J , Singh, Davinder J , Chee-Williams, Jessica L , Weidler, Erica M

The Cleft Palate Craniofacial Journal | February 19, 2020 | Volume: 57 | Issue: 7 | Pages: 860-871

10.1177/1055665620902883 Get It

Background: Palate re-repair has been proposed as an effective treatment for velopharyngeal insufficiency (VPI) with a low risk of obstructive sleep apnea (OSA). The authors conducted a systematic review and meta-analysis to determine the proportion of patients achieving normal speech resonance following palate re-repair for VPI, the proportion developing OSA, and the criteria for patient selection that are associated with increased effectiveness. Methods: PubMed, Embase, and Scopus were searched from inception through April 2018 for English language articles evaluating palate re-repair for the treatment of VPI in patients with a repaired cleft palate. Inclusion criteria included reporting of hypernasality, nasal air emission, nasometry, additional VPI surgery, and/or OSA outcomes. Meta-analysis was conducted using random effects models. Risk of bias was assessed regarding criteria for patient selection, blinding of outcome assessors, and validity of speech assessment scale. Results: Eighteen studies met inclusion criteria. The incidence of achieving no consistent hypernasality follow palate re-repair was 61% (95% confidence interval [CI]: 44%-75%). The incidence of additional surgery for persistent VPI symptoms was 21% (95% CI: 12%-33%). The incidence of OSA was 28% (95% CI: 13%-49%). Criteria for selecting patients to undergo re-repair varied, with anterior/sagittal position of palatal muscles (33%) and small velopharyngeal gap (22%) being the most common. No specific patient selection criteria led to superior speech outcomes ( P = .6572). Conclusions: Palate re-repair achieves normal speech resonance in many but not all patients with VPI. Further research is needed to identify the specific examination and imaging findings that predict successful correction of VPI with re-repair.
Long-Term Outcomes for Adult Patients With Cleft Lip and Palate
Connolly, Katharine A., Kurnik, Nicole M. , Truong, Tuan, Müller, Cristiane , Beals, Patricia, Singh, Davinder , Beals, Stephen P., Truong, Tuan A, Singh, Davinder J , Muller, Cristiane

Journal of Craniofacial Surgery | September 14, 2019 | Volume: 30 | Issue: 7 | Pages: 2048-2051

10.1097/scs.0000000000005932 Get It

Abstract The purpose of this study was to evaluate a single center's experience with adult patients who had cleft lip, cleft palate, or both. The authors aimed to identify common long-term needs in this patient population and evaluated the relationship of team-based care in meeting those needs. To do so, the authors retrospectively reviewed chart records from a single private practice and tertiary referral cleft center for all patients who were ≥15 years of age and who had a history of clefts of the lip or palate, or both, from January 1, 2013, to June 30, 2014. The authors compared the concerns of the patients who received cleft-team–based care by a single, multidisciplinary cleft team; multiple multidisciplinary cleft teams; or no formal cleft team. The authors analyzed data for 142 patients. The most common patient concerns were lip aesthetics (64%), nose aesthetics (61%), septal deviations (47%), nasal obstruction (44%), malocclusion (32%), oronasal fistulas (29%), and speech (21%). Oronasal fistulas were more commonly reported in the group of patients who had care by multiple teams (42.9%; P < .001). Malocclusion was more commonly reported in the group of patients who had care by multiple teams (50%; P = .001). The authors found that adult patients who have undergone rehabilitation for cleft lip and palate appear to have a common set of long-term needs. Multidisciplinary cleft-team–based care appears to be the most effective way to address these needs.
Craniofacial Fellowship Trained Surgeons: Where Are They Now?
Howarth, Ashley L. , Kurnik, Nicole M. , Rebecca, Alanna M. , Singh, Davinder

Plastic and Reconstructive Surgery - Global Open | September 10, 2019 | Volume: 7 | Issue: 8S-1 | Pages: 59-59

10.1097/01.gox.0000584544.25788.14 Get It

Work-Related Musculoskeletal Discomfort and Injury in Craniofacial and Maxillofacial Surgeons
Howarth, Ashley L. , Lemaine, Valérie, Singh, Davinder , Noland, Shelley S. , Singh, Davinder J , Hallbeck, M. Susan

Journal of Craniofacial Surgery | August 1, 2019 | Volume: 30 | Issue: 7 | Pages: 1982-1985

10.1097/scs.0000000000005631 Get It

Introduction: Long, complex surgical procedures with non-ergonomic postures, headlights, loupe magnification, and microscope use may put craniofacial and maxillofacial surgeons at an increased risk of work-related musculoskeletal discomfort (WRMD). Identifying the prevalence and impact of WRMD may guide preventive strategies to prolong well-being, job satisfaction, and career duration. Methods: A 31-question survey was designed to evaluate WRMD. The survey was sent to American Society of Craniofacial Surgeons and American Society of Maxillofacial Surgeons members. The survey was created and distributed electronically through a private survey research center (Qualtrics Survey Software). Results: There were 95 respondents (23.75% response rate): 75% male, 56% aged 31 to 50 years old, and 73% in academic practice. On a scale of 0 to 10 (0 no pain, 10 worst pain), WRMD for surgery without loupes/microscope had a median of 3, with loupes 4, and with microscope 5. Pain was most common in the neck. Pain within 4 hours of surgery was present in 55% and 38% feared pain would influence future surgical performance. Surgeon discomfort affects posture (72%), stamina (32%), sleep (28%), surgical speed (24%), relationships (18%), and concentration (17%). Medical treatment for discomfort was sought by 22%. Time off work for treatment occurred in 9%. Conclusion: The WRMD can affect many aspects of a craniofacial or maxillofacial surgeon's life and has the potential to shorten or end a career. Occupational health and surgical ergonomics should be emphasized during surgical training and in surgical practice.