Value of Pediatric Sleep Questionnaire in Referrals for Obstructive Sleep Apnea at VCU Pediatric Dental Clinic

Purpose: The purpose of this study is to determine the number of VCU pediatric dental patients screened for obstructive sleep apnea (OSA) relative to the number of referrals made for a pediatric sleep study. Methods: This was a retrospective chart review of children between the ages of 1-18 years seen at the VCU Pediatric Dental Clinic between 2016-2020. Patients with a completed sleep apnea screening questionnaire in the health history form or sleep apnea form/referral were identified. The data was used to determine how many referrals were made for a pediatric sleep study in patients screening positive for sleep apnea. Results: A total of 1,265 patients were included in the analysis. Only 147 of the 1,265 patients had a PM-STOP-Bang form in their dental record (12%). There was a significant relationship with the number of “yes” responses from the screening questions and completion of the PM-STOP-Bang form (p-value \u3c0.0001). Of the 147 patients with a PM-STOP-Bang form, 37 were referred to a physician for an evaluation (25%). Having a documented referral was significantly associated with the PM-STOP-Bang score (p-value \u3c 0.0001). Conclusion: The purpose of this study is to determine the number of VCU pediatric dental patients screened for Obstructive Sleep Apnea using the Pediatric Modified (PM) STOP-Bang questionnaire relative to the number of referrals made for a sleep study. The screening questions from the patient’s electronic health record proved to be useful in aiding the dental provider to complete a PM-STOP-Bang. The PM-STOP-Bang proved to be a useful tool in providing referral to a patient’s physician following a positive screening for Obstructive Sleep Apnea. Based on the results of this study, this tool has an important role not only in pediatric dentistry, but when modified to serve the adult dental patient

Oscillations In Lotka-Volterra Systems Of Chemical Reactions

For a chemical reaction system modeled by x =k1Ax -k2x2 -k3xy +k4y2, y =k3xy -k4y2 -k5y +k6B, it is shown that for each positive choice of parameters k1A, B there exists a unique stationary state which is globally asymptotically stable in the positive quadrant. A criterion for the non-existence of periodic solutions is given for the generalized Lotka-Volterra system:x = f(x)h(x, y), y. © 1990 J.C. Baltzer AG, Scientific Publishing Company

Boundedness And Periodic Solutions In Infinite Delay Systems

Liapunov methods are used to give conditions ensuring that solutions of infinite delay equations are uniformly bounded and uniformly ultimately bounded with respect to unbounded (Cg) initial function spaces; and the connection to proving existence of periodic solutions is examined. Several examples illustrate the application of these results, especially to integrodifferential equations. © 1992

Parameter Identification of Pressure Sensors by Static and Dynamic Measurements

Fast identification methods of pressure sensors are investigated. With regard to a complete accurate sensor parameter identification two different measurement methods are combined. The approach consists on one hand in performing static measurements - an applied pressure results in a membrane deformation measured interferometrically and the corresponding output voltage. On the other hand optical measurements of the modal responses of the sensor membranes are performed. This information is used in an inverse identification algorithm to identify geometrical and material parameters based on a FE model. The number of parameters to be identified is thereby generally limited only by the number of measurable modal frequencies. A quantitative evaluation of the identification results permits furthermore the classification of processing errors like etching errors. Algorithms and identification results for membrane thickness, intrinsic stress and output voltage will be discussed in this contribution on the basis of the parameter identification of relative pressure sensors.Comment: Submitted on behalf of EDA Publishing Association (http://irevues.inist.fr/EDA-Publishing

Intra-Project Externality and Layout Variables in Residential Condominium Appraisals

This study examines the impact of intra-project externalities and layout variables on the selling prices of 897 condominium units in the cities of Irvine and Santa Ana in Orange County, California. It documents that, at a micro-level, proximity to intra-project externalities such as greenspace, swimming pools, recreational areas, traffic noise, and the like, and project layout variables representing the location of individual condominium units within multiunit structures, have significant effects on the property values of units within a condominium project. The results indicate that, when cost is not prohibitive, both appraisers and underwriters should take intra-project externalities and layout variables into consideration when estimating property values or underwriting residential mortgages for condominium properties.

Engineering derivatives from biological systems for advanced aerospace applications

The present study consisted of a literature survey, a survey of researchers, and a workshop on bionics. These tasks produced an extensive annotated bibliography of bionics research (282 citations), a directory of bionics researchers, and a workshop report on specific bionics research topics applicable to space technology. These deliverables are included as Appendix A, Appendix B, and Section 5.0, respectively. To provide organization to this highly interdisciplinary field and to serve as a guide for interested researchers, we have also prepared a taxonomy or classification of the various subelements of natural engineering systems. Finally, we have synthesized the results of the various components of this study into a discussion of the most promising opportunities for accelerated research, seeking solutions which apply engineering principles from natural systems to advanced aerospace problems. A discussion of opportunities within the areas of materials, structures, sensors, information processing, robotics, autonomous systems, life support systems, and aeronautics is given. Following the conclusions are six discipline summaries that highlight the potential benefits of research in these areas for NASA's space technology programs

Older adults have difficulty in decoding sarcasm

This research was funded by the Leverhulme Trust, United Kingdom (F/00152/W). We acknowledge the assistance of Francis Quinn in collecting the data.Peer reviewedPostprin