OBJECTIVES/HYPOTHESIS: There is a significant lack of uniform agreement regarding nomenclature for benign vocal fold lesions (BVFLs). This confusion results in difficulty for clinicians communicating with their patients and with each other. In addition, BVFL research and comparison of treatment methods are hampered by the lack of a detailed and uniform BVFL nomenclature. STUDY DESIGN: Clinical consensus conferences were held to develop an initial BVFL nomenclature paradigm. Perceptual video analysis was performed to validate the stroboscopy component of the paradigm. METHODS: The culmination of the consensus conferences and the video-perceptual analysis was used to evaluate the BVFL nomenclature paradigm using a retrospective review of patients with BVFL. RESULTS: An initial BVFL nomenclature paradigm was proposed utilizing detailed definitions relating to vocal fold lesion morphology, stroboscopy, response to voice therapy and intraoperative findings. Video-perceptual analysis of stroboscopy demonstrated that the proposed binary stroboscopy system used in the BVFL nomenclature paradigm was valid and widely applicable. Retrospective review of 45 patients with BVFL followed to the conclusion of treatment demonstrated that slight modifications of the initial BVFL nomenclature paradigm were required. With the modified BVFL nomenclature paradigm, 96% of the patients fit into the predicted pattern and definitions of the BVFL nomenclature system. CONCLUSIONS: This study has validated a multidimensional BVFL nomenclature paradigm. This vocal fold nomenclature paradigm includes nine distinct vocal fold lesions: vocal fold nodules, vocal fold polyp, pseudocyst, vocal fold cyst (subepithelial or ligament), nonspecific vocal fold lesion, vocal fold fibrous mass (subepithelial or ligament), and reactive lesion.

OBJECTIVES Quantitative laryngeal electromyography (LEMG) using turns analysis can differentiate acute vocal fold paralysis from normal controls. The objective of this study is to determine if using both traditional qualitative LEMG measurements in addition to turns analysis improves prognostic accuracy in patients with acute vocal fold paralysis who demonstrate voluntary motor activity. STUDY DESIGN Retrospective review of LEMG data (qualitative and quantitative) and charts of patients with vocal fold paralysis on flexible laryngoscopy, recurrent laryngeal neuropathy, and varying degrees of motor unit recruitment. METHODS Laryngeal EMG using a standardized protocol involving qualitative (evaluation of recruitment, motor unit configuration, detection of fibrillations, synkinesis) and quantitative (turns analysis) measurements was performed. Prognosis was correlated with vocal fold motion recovery status (minimum of 6 months following onset) using positive and negative predictive values (PPV, NPV). RESULTS Twenty-three patients underwent LEMG for acute recurrent laryngeal neuropathy. All four patients with excellent LEMG prognosis recovered motion, whereas 17/19 patients with fair/poor LEMG prognosis were without motion at least 6 months following onset, resulting in a 100% PPV and 89.5% NPV. CONCLUSIONS Integrating both qualitative and quantitative LEMG data improves prognostic accuracy in vocal fold paralysis patients who demonstrate voluntary motor unit activity.

OBJECTIVES/HYPOTHESIS No studies to date have examined the clinical safety and efficacy of carboxymethylcellulose (CMC) for vocal fold injection. The current study investigates the voice outcomes and complications of CMC injection. STUDY DESIGN Retrospective review. METHODS All patients who underwent CMC injection from three independent sites in a 1-year period were reviewed. Voice outcomes in the form of voice handicap index-10 (VHI-10) and complications from injection were recorded. RESULTS Seventy-eight patients with VHI-10 results from 1 to 8 weeks after CMC injection were evaluated. Thirty-eight patients were treated for vocal fold immobility, and 15 patients underwent treatment for hypomobility, 15 for vocal fold atrophy, seven for scar/sulcus, one for previous laryngeal fracture, one for functional dysphonia, and one for persistent granuloma. In 60 patients with available VHI-10 data, overall improvement in voice was seen. There was a mean decrease in VHI-10 of 7.48 (26.4 to 18.9, P <.05), correlating to a 19.9% decrease. Forty-five patients (75%) showed a decrease in VHI-10, nine (15%) showed an increase, and six (10%) showed no change. Statistically significant differences were seen for patients with immobility (decrease of 8.6, or 31%) and hypomobility (decrease of 10.7, or 37.8%). There were no complications of vocal fold stiffness, inflammatory reaction, or scar in the 78 patients during the total follow-up period. CONCLUSIONS CMC is a viable, safe, and efficacious material for the temporary treatment of glottic insufficiency in vocal fold immobility and hypomobility, with minimal risk of permanent adverse voice outcomes.

Flow coefficients v_{n} for n=2, 3, 4, characterizing the anisotropic collective flow in Au+Au collisions at sqrt[s_{NN}]=200  GeV, are measured relative to event planes Ψ_{n}, determined at large rapidity. We report v_{n} as a function of transverse momentum and collision centrality, and study the correlations among the event planes of different order n. The v_{n} are well described by hydrodynamic models which employ a Glauber Monte Carlo initial state geometry with fluctuations, providing additional constraining power on the interplay between initial conditions and the effects of viscosity as the system evolves. This new constraint can serve to improve the precision of the extracted shear viscosity to entropy density ratio η/s.

OBJECTIVES/HYPOTHESIS: An increasing number of laryngeal procedures are performed in the office. However, little is known about how well these procedures are tolerated and what factors determine success or failure. STUDY DESIGN: Prospectively collected patient and physician surveys from five surgeons at two institutions describe patient tolerance of awake, in-office laryngeal procedures (AIOLPs). METHODS: There were 154 procedures performed in a 6-month period, including vocal fold injection (VFI)(72%), laser treatment (19%), and transnasal esophagoscopy (3%). Average duration of procedure was 13 ± 8 minutes. RESULTS: Patients reported an average of 37 of 100 on a discomfort scale, with 0 representing no discomfort and 100 representing maximal discomfort. Ninety-three percent of patients would undergo another procedure, and 96% would recommend AIOLPs to other patients. Procedures were completed successfully in 92%. Most common surgeon-reported difficulties included copious secretions and uncontrolled gag reflex. Procedures that involved such difficulties had a significantly lower rate of procedure completion, 73% vs. 96%, P =.0001. High preprocedure anxiety did not adversely impact patient comfort or procedure completion rate. There was no difference in discomfort scores based on VFI approach or patient familiarity with AIOLPs. There was a significant difference in discomfort score between patients with successful first-approach VFI and those who required a change in VFI approach, 36.0 vs. 61.3, respectively, P =.003. The rate of requiring a second and third VFI approach was 4.6% and 2.8%, respectively. CONCLUSIONS: This study encompasses multiple diagnoses, procedures, VFI techniques, and methods of anesthesia. AIOLPs are exceptionally well tolerated by patients, resulting in extremely high completion and satisfaction rates.

Back-to-back hadron pair yields in d+Au and p+p collisions at √s(NN)=200 GeV were measured with the PHENIX detector at the Relativistic Heavy Ion Collider. Rapidity separated hadron pairs were detected with the trigger hadron at pseudorapidity |η|<0.35 and the associated hadron at forward rapidity (deuteron direction, 3.0<η<3.8). Pairs were also detected with both hadrons measured at forward rapidity; in this case, the yield of back-to-back hadron pairs in d+Au collisions with small impact parameters is observed to be suppressed by a factor of 10 relative to p+p collisions. The kinematics of these pairs is expected to probe partons in the Au nucleus with a low fraction x of the nucleon momenta, where the gluon densities rise sharply. The observed suppression as a function of nuclear thickness, p(T), and η points to cold nuclear matter effects arising at high parton densities.

We present measurements of J/ψ yields in d+Au collisions at sqrt[s(NN)]=200  GeV recorded by the PHENIX experiment and compare them with yields in p+p collisions at the same energy per nucleon-nucleon collision. The measurements cover a large kinematic range in J/ψ rapidity (-2.2<y<2.4) with high statistical precision and are compared with two theoretical models: one with nuclear shadowing combined with final state breakup and one with coherent gluon saturation effects. In order to remove model dependent systematic uncertainties we also compare the data to a simple geometric model. The forward rapidity data are inconsistent with nuclear modifications that are linear or exponential in the density weighted longitudinal thickness, such as those from the final state breakup of the bound state.

OBJECTIVES/HYPOTHESIS Visible light spectroscopy (VLS) is the technology behind the Food and Drug Administration-approved TSTAT device that is used to monitor tissue oxygen (StO(2)) and relative total hemoglobin (rtHb) levels by measuring reflected visible light. The purpose of this novel, pilot study was to determine if VLS is a reliable and valid method of measuring StO(2) and rtHb levels in the human thyroarytenoid/lateral cricoarytenoid (TA-LCA) muscle complex, thus providing information about vocal fold muscle physiology. STUDY DESIGN Pre-test/post-test with mulitple baselines and two conditions. METHODS VLS measurements were taken at baseline, during exercise, and following recovery on six subjects using both noncontact channel-port endoscope (endo-probe) and laryngeal electromyography (LEMG) needle-guided techniques. RESULTS The average baseline StO(2) was 69%(standard deviation [SD]= 3.6%) for the LEMG-guided probe and was 71.5%(SD = 2.8%) for the endo-probe. During phonation, the StO(2) for the LEMG-guided probe dropped to 59%(SD = 7%; P =.04). Mean rtHb measured by the LEMG probe rose from a baseline of 144 μM (SD = 165 μM) to 214 μM (SD = 166 μM, P =.34) during phonation and back to 149 μM (SD = 139 μM, P =.85) after recovery. Mean rtHb as measured using the endo-probe at baseline and after recovery was 104 μM (SD = 30 μM, P =.76). CONCLUSIONS VLS can be used to measure changes in StO(2) and rtHb levels pre- and postexercise in the human TA-LCA muscle complex.

PURPOSE OF REVIEW: Many procedures exist to address the airway restriction often seen with bilateral vocal fold immobility. We review the most recent studies involving arytenoid and/or posterior vocal fold surgery to provide an update on the issues related to these procedures. Specific focus is placed on selection of the surgical approach and operative side, use of adjunctive therapies, and outcome measures including decannulation rate, revision and complication rate, and postoperative results. RECENT FINDINGS: Ten studies were identified between 2004 and 2011. Modifications to the orginal transverse cordotomy and medial arytenoidectomy techniques continue to be investigated to seek improvement in dyspnea symptoms with minimal decline in voice and/or swallowing function. Decannulation rates for these approaches are high. Postoperative dysphagia appears to be less commonly observed but requires continued study. The use of mitomycin-C in these procedures has been poorly studied to date. SUMMARY: Both transverse cordotomy and medial arytenoidectomy procedures result in high success rates. However, many questions related to these procedures remain unanswered, particularly with respect to preoperative and postoperative evaluations of voice quality, swallowing function, and pulmonary status. There is need for rigorous prospective clinical studies to address these many issues further.