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Objective: The purpose of this study is to characterize the presentation, outcomes, and barriers to care for White and non-White patients undergoing endoscopic sinus surgery (ESS). Background: ESS is often successful in providing long-term relief for patients suffering from chronic rhinosinusitis (CRS). Literature that uses robust measures of socioeconomic status (SES) and barriers to care to assess ESS outcomes is limited. Methods: A retrospective matched cohort study of patients who underwent ESS for CRS between 1/1/2015 and 6/1/2021 at a single tertiary care academic center was conducted. White and non-White patients were matched 1-to-1 by sex and age (± 5 years). SES was evaluated using the area of deprivation index (ADI). Results: Of the 298 patients included in the study, 149 are White and 149 are non-White, 111 (37.2%) have CRS with nasal polyposis (CRSwNP), 141 (47.3%) had allergic rhinitis, 90 (30.2%) had asthma and 22 (7.4%) required revision ESS. Non-White patients were 3.62 times more likely to present with CRSwNP (95% confidence interval [CI] 2.2-5.96) and had 2.87 times increased odds for requiring revision ESS than age and sex-matched White patients (95% CI 1.090-7.545). The median ADI for non-White (6.00) patients was higher than for White patients (3.00) (P <.001) and 21.5% more non-White patients presented with Medicaid (P <.001). Conclusion: Non-White patients undergoing ESS for CRS are more likely to present from areas with fewer resources and be underinsured. Using robust measures of SES, such as ADI, may allow for care to be tailored to patients with barriers to care. [ABSTRACT FROM AUTHOR]

Objective: The purpose of this study is to determine the impact of demographics and sinonasal comorbidities on the revision rate of functional endoscopic sinus surgery (FESS) for chronic rhinosinusitis (CRS). Background: Although endoscopic sinus surgery (ESS) is often successful in providing long‐term relief for patients suffering from CRS, revision surgery can occur. There is conflicting literature on the impact of race on FESS outcomes. Methods: A single‐center retrospective cohort study of patients that underwent FESS for CRS between January 1, 2015 and June 1, 2021 at a single tertiary care academic center. Results: A total of 682 patients between the ages of 18 and 89 underwent primary ESS between January 1, 2015 and June 1, 2021 and were included in this study. Of these patients, 388 (56.9%) were female, with an average age of 48.6 ± 16.7. Thirty‐eight patients (5.6%) underwent revision sinus surgery during the study period. Patients that identified as White had significantly lower rates of revision sinus surgery (4.1%) than non‐White patients (10.7%), including those identifying as Asian, Black, multiracial, or other. On multivariate analysis, non‐White race (OR 4.933), polyposis (3.175), and high preoperative SNOT‐22 scores (OR 1.029) were independently associated with revision sinus surgery. The mean preoperative SNOT‐22 for all participants was 39.1 ± 22.0, whereas the mean postoperative SNOT‐22 was 20.6 ± 17.5 (p < 0.001). Conclusion: Race plays an important role in outcomes following revision sinus surgery that is independent of location and insurance status. More studies are required to assess the reason race plays an important role in outcomes following revision sinus surgery. Level of Evidence: Level 3 Laryngoscope, 133:2878–2884, 2023 [ABSTRACT FROM AUTHOR]

Background and Objectives: Performing an effective maxillary antrostomy is critical to improving chronic maxillary sinusitis symptomatology. Incomplete dissection of the uncinate process and failure to incorporate the natural drainage pathway may lead to recirculation and need for revision surgery. The purpose of this study is to determine if 70° endoscopes provide added value in determining incomplete dissection or residual disease. Methods: Prospective study of 35 sinuses from 18 patients undergoing FESS for Chronic Rhinosinusitis (CRS) between 11/1/2020 and 4/30/2021. Two fellowship trained Rhinologists initially performed maxillary antrostomies exclusively using a 0° endoscope, then transitioned to a 70° endoscope. Surgeons completed a survey to assess completion of the antrostomy prior to use of 70° endoscope, sino-nasal anatomy, and difficulty of the operation. Intraoperative photographs before and after using a 70° endoscope were evaluated by a third party. Pre-operative CT scans were used to evaluate the sphenoid keel-caudal septum-nasolacrimal duct (SK-CS-NL) angle. Results: Of 35 sinuses from 18 patients all 35 sinuses had CRS with 48.5% having nasal polyposis and 42.9% having active infection. There was residual inflammatory tissue in the anterior maxillary sinus, including polypoid tissue and uncinate process prior to using the 70° endoscope in 82.9% of sinuses. The natural drainage pathway was not incorporated into the dissection in 28.6% of sinuses before converting to 70° endoscope. Incomplete dissection with 0° endoscope was not associated with nasal polyposis (P =.086) or uncinate position (0.741). Narrow SK-CS-NL angles were associated with incomplete dissection of the anterior maxillary sinus with 0° endoscope (16.0° ± 3.0° vs 20.6° ± 3.2°; P =.013). Conclusion: Use of 70° endoscope in maxillary antrostomy may be beneficial in identifying and resecting disease within the anterior maxillary sinus that may otherwise be difficult to find using a 0° endoscope. This is especially true in patients with narrow nasolacrimal duct positioning. [ABSTRACT FROM AUTHOR]

Background: Fall-related injuries (FRIs) are a leading cause of morbidity, mortality, and costs among nursing home (NH) residents. Carefully defining FRIs in administrative data is essential for improving injury-reduction efforts. We developed a series of novel claims-based algorithms for identifying FRIs in long-stay NH residents.Methods: This is a retrospective cohort of residents of NH residing there for at least 100 days who were continuously enrolled in Medicare Parts A and B in 2016. FRIs were identified using 4 claims-based case-qualifying (CQ) definitions (Inpatient [CQ1], Outpatient and Provider with Procedure [CQ2], Outpatient and Provider with Fall [CQ3], or Inpatient or Outpatient and Provider with Fall [CQ4]). Correlation was calculated using phi correlation coefficients.Results: Of 153 220 residents (mean [SD] age 81.2 [12.1], 68.0% female), we identified 10 104 with at least one FRI according to one or more CQ definition. Among 2 950 residents with hip fractures, 1 852 (62.8%) were identified by all algorithms. Algorithm CQ4 (n = 326-2 775) identified more FRIs across all injuries while CQ1 identified less (n = 21-2 320). CQ2 identified more intracranial bleeds (1 028 vs 448) than CQ1. For nonfracture categories, few FRIs were identified using CQ1 (n = 20-488). Of the 2 320 residents with hip fractures identified by CQ1, 2 145 (92.5%) had external cause of injury codes. All algorithms were strongly correlated, with phi coefficients ranging from 0.82 to 0.99.Conclusions: Claims-based algorithms applied to outpatient and provider claims identify more nonfracture FRIs. When identifying risk factors, stakeholders should select the algorithm(s) suitable for the FRI and study purpose. [ABSTRACT FROM AUTHOR]

The molecular details of the assembly (DPPC phospholipid monolayer/bilayer on a hexadecanethiol monolayer on a copper- or nickel-coated microarray) are determined using the infrared, surface-plasmon-mediated, extraordinary transmission of the metal microarrays. Infrared absorption spectra with greatly enhanced absorptions by comparison to literature are recorded and used as a diagnostic for the phase composition, and molecular geometry of these nanocoatings.

The preparation of a commercial nickel mesh coated with copper in order to reduce the metallic micro- and nanoarrays of subwavelength holes size is explained. Reduction of hole sizes enhances surface plasmons (SPs) lifetime and help to study the catalytic process on copper (Cu) surface via zero-order FTIR transmission spectra.

Surface plasmons were accessed with mid-IR light using zeroth-order FTIR transmission spectra. It is reported that these can be used in sensitive detection schemes.

Describes the National Bicentennial Competition on the Constitution and Bill of Rights, a Center for Civic Education project. Includes two project lessons which focus on the U.S. Constitution as an instrument to protect individual freedom at the middle school level, and feature the founding philosophy of the Constitution at the high school level. (LS)

Metal films with arrays of subwavelength holes (mesh) exhibit extraordinary transmission resonances to which many attribute a role for surface plasmon polaritons (SPPs); others debated this point. Experimental measurements of propagation lengths are presented under conditions that pertain to the use of SPPs for surface spectroscopy. The lateral extent of electromagnetic propagation along the mesh surface is measured by recording absorption spectra of a line of latex microspheres as a function of distance away from the line along the mesh. Measurements reveal an exponential functional form for decay of absorption signal laterally from the absorption source. Results at 697 cm-1, which are closest to the strongest transmission resonance of the mesh, reveal a 1/e propagation distance along the surface of 17.8±2.9 μm. This is 40% larger than the lattice spacing implicating the holes as the SPP damping mechanism, however, this is significantly shorter than smooth metal expectations. [ABSTRACT FROM AUTHOR]

The interaction of an infrared surface plasmon and an excited molecular vibration was investigated by using a square array of subwavelength holes in a Ni film which supports propagating, surface-plasmon-mediated, transmission resonances. The largest transmission resonance [the (1,0)-] was tuned through the rocking vibration of the hexadecane molecule (at 721 cm-1) in a hexadecane film on the mesh by varying the thickness of the film. The interaction of the rocking vibration and surface plasmon is characterized spectroscopically by an increase in the intensity of the vibrational band by more than a factor of 2, variation of the vibrational line shape relative to the spectrum on a nonmetallic surface, and shifts in vibrational peak position by as much as 3.0 cm-1. Relationships are developed between the transmission resonance position and the thickness and dielectric properties of the coating. [ABSTRACT FROM AUTHOR]

Reliable thermochemistry is computed for infinite stretches of pure-carbon materials including acetylenic and cumulenic carbon chains, graphene sheet, and single-walled carbon nanotubes (SWCNTs) by connection to the properties of finite size molecules that grow into the infinitely long systems. Using ab initio G3 theory, the infinite cumulenic chain (:C==C==C==C:) is found to be 1.9±0.4 kcal/mol per carbon less stable in free energy at room temperature than the acetylenic chain (·C=C–C=C·) which is 24.0 kcal/mol less stable than graphite. The difference between carbon-carbon triple, double, and single bond lengths (1.257, 1.279, and 1.333 Å, respectively) in infinite chains is evident but much less than with small hydrocarbon molecules. These results are used to evaluate the efficacy of similar calculations with the less rigorous PM3 semiempirical method on the (5,5) SWCNT, which is too large to be studied with high-level ab initio methods. The equilibrium electronic energy change for C(g)→C[infinite (5,5) SWCNT] is -166.7 kcal/mol, while the corresponding free energy change at room temperature is -153.3 kcal/mol (6.7 kcal/mol less stable than graphite). A threefold alternation (6.866, 6.866, and 6.823 Å) in the ring diameter of the equilibrium structure of infinitely long (5,5) SWCNT is apparent, although the stability of this structure over the constant diameter structure is small compared to the zero point energy of the nanotube. In general, different (n,m) SWCNTs have different infinite tube energetics, as well as very different energetic trends that vary significantly with length, diameter, and capping. [ABSTRACT FROM AUTHOR]

The surface-plasmon-mediated, extraordinary transmission of metallic arrays of subwavelength apertures has been used as the light source for absorption studies of self-assembled monolayers on metal. Enhanced infrared absorption spectra of a sequence of alkanethiol self-assembled monolayers on copper were recorded for carbon chain lengths varying from 8 to 18 atoms. Transition positions and intensities are presented over a large range of the infrared region. The connection between the vibrational modes of the CH2 wagging progression and the infinite methylene chain is explored using a traditional coupled oscillator approach and a new cluster perspective.© 2004 American Institute of Physics. [ABSTRACT FROM AUTHOR]

The extraordinary transmission effect and several other properties of the metal films with arrays of subwavelength holes are studied. The results show that the excitement of the surface plasmons leads to the transmission of intense radiations from the optically thick metal films.