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1.
Cureus ; 16(3): e55750, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38586787

RESUMO

Introduction The coronavirus disease 2019 (COVID-19) pandemic led to the more common use of venovenous (VV) extracorporeal membrane oxygenation (ECMO) for adults with acute respiratory distress syndrome (ARDS). While tracheostomy is generally understood to decrease the risks of prolonged endotracheal intubation, there is conflicting data regarding the benefit of tracheostomy in patients on ECMO. The purpose of this study is to determine whether ECMO cannulation before tracheostomy impacted patient outcomes. Methods This is a retrospective chart review of patients who underwent tracheostomy for COVID-19-related ARDS at a tertiary academic center from March 2020 through March 2022. Patients were separated into two groups based on whether they were cannulated for ECMO prior to tracheostomy. Fisher's exact test or Wilcoxon rank sum test was used to compare the two groups. Results A total of 24 patients were included in the study, with 13 in the ECMO group and 11 in the non-ECMO group. There was no significant difference in age, comorbidities, race, or gender between the groups. Patients on ECMO had a longer time from admission to intubation (seven days vs. three days, p=.002), were more likely to have multiple intubations (54% vs 9%, p= .033), had increased rates of postoperative bleeding (62% vs. 18%, p = .047), and had a higher mortality rate (39% vs. 0%, p= .041). Conclusions ECMO cannulation prior to tracheostomy for COVID-19-related ARDS is associated with poorer outcomes. It is unclear whether this is related to a more severe disease burden in these patients. Further study is needed to evaluate this and guide future management.

2.
Laryngoscope ; 134(7): 3215-3219, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38409738

RESUMO

OBJECTIVES: Transgender individuals face significant health disparities including deficiencies in physician education, knowledge, and comfort with transgender health care. As the prevalence of the transgender population increases more individuals may seek gender-affirming surgery. Herein, we present a survey study which presents data on (1) the current practice patterns, (2) the familiarity with, (3) the perception of, and (4) the future educational goals of transgender health care among laryngologists in the United States. METHODS: A cross-sectional survey study of practicing laryngologists in the United States. RESULTS: A total of 53 laryngologists participated in the study, with 50 (94.3%) coming from an academic practice. Survey response rate was 32.3% (54/167). The number of patients cared for and surgeries performed were significantly associated with self-perceived overall competence (p < 0.001 and p < 0.001), surgical competence (p = 0.013 and p < 0.001), and comfort counseling patients on gender-affirming surgeries (p < 0.001 and p < 0.001). Most obtained training through real-world experience (n = 46, 86.8%), whereas only 11 (20.7%) had formal training in residency or fellowship. Although 37 (70%) of participants felt competent caring for transgender patients, 38 (72%) want to learn more about transgender care, and 49 (93%) support incorporating transgender care into otolaryngology residency/fellowship curricula. CONCLUSION: There is a need for an increased awareness of transgender healthcare issues to address disparities experienced by this diverse population. Many laryngologists report wanting to learn more about this developing part of our field and support incorporating transgender care into training. We attempt to spotlight the degree by which practicing laryngologists are familiar, competent, and comfortable with transgender care. LEVEL OF EVIDENCE: 5 Laryngoscope, 134:3215-3219, 2024.


Assuntos
Pessoas Transgênero , Humanos , Estudos Transversais , Pessoas Transgênero/psicologia , Pessoas Transgênero/estatística & dados numéricos , Masculino , Feminino , Estados Unidos , Inquéritos e Questionários , Padrões de Prática Médica/estatística & dados numéricos , Competência Clínica/estatística & dados numéricos , Adulto , Otolaringologia/educação , Otorrinolaringologistas/estatística & dados numéricos , Otorrinolaringologistas/psicologia , Pessoa de Meia-Idade , Atitude do Pessoal de Saúde
3.
Laryngoscope ; 134(6): 2812-2818, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38217412

RESUMO

OBJECTIVES: Voice rest is commonly recommended for patients with benign vocal fold lesions (BVFLs) after phonomicrosurgery. The study compares the clinical voice outcomes of two protocols, 7-day complete voice rest (CVR) and 3-day CVR followed by 4-day relative voice rest (CVR + RVR), for patients with BVFLs after phonomicrosurgery. STUDY DESIGN: Prospective, randomized controlled trial. METHOD: Patients with BVFLs undergoing phonomicrosurgery were recruited prospectively and randomly assigned to either protocol. Outcomes were assessed on objective measures of acoustics (fundamental frequency, frequency range, mean intensity, cepstral peak analysis) and aerodynamics (vital capacity, airflow rate, subglottal pressure, phonation threshold pressure), as well as subjective measures, both provider-reported through the Consensus Auditory-Perceptual Evaluation of Voice (CAPE-V), and patient-reported through the Voice Handicap Index (VHI). Clinical measures were collected at three-time points: preoperatively, 1-week postoperatively (on voice rest), and 1-month postoperatively. In addition, adherence was estimated using a vocal dosimeter. RESULTS: Twenty-five patients were recruited and randomized to 7-day CVR (n = 13) and CVR + RVR regimen (n = 12). Statistically significant changes were found within both groups for subglottal pressure (p = 0.03) and VHI score (p < 0.001) comparing pre-operative baseline to 1-month postoperative follow-up. There were no statistically significant differences between the groups. Regardless of group assignment, a significant decrease in overall severity ratings for the CAPE-V was found by comparing the preoperative scores to postoperative scores at 1-week (p < 0.001) and 1-month (p < 0.001). CONCLUSION: Both groups improved their overall voice quality comparably 1 month after undergoing phonomicrosurgery as measured by objective and subjective parameters. LEVELS OF EVIDENCE: 2. Laryngoscope, 134:2812-2818, 2024.


Assuntos
Microcirurgia , Prega Vocal , Qualidade da Voz , Humanos , Feminino , Masculino , Microcirurgia/métodos , Estudos Prospectivos , Pessoa de Meia-Idade , Prega Vocal/cirurgia , Prega Vocal/fisiopatologia , Adulto , Resultado do Tratamento , Doenças da Laringe/cirurgia , Doenças da Laringe/fisiopatologia , Descanso/fisiologia , Distúrbios da Voz/etiologia , Distúrbios da Voz/cirurgia , Distúrbios da Voz/fisiopatologia , Fonação/fisiologia , Idoso
4.
Int Forum Allergy Rhinol ; 14(3): 621-629, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-37461130

RESUMO

OBJECTIVE: To evaluate the contribution of postnasal drip (PND) and chronic cough (CC) to symptoms of patients with chronic rhinitis treated with temperature-controlled radiofrequency (TCRF) neurolysis of the posterior nasal nerve (PNN), and correlate PND and CC scores with components of the reflective total nasal symptom score (rTNSS). METHODS: Pooled data from three prospective studies: two single-arm studies and the index active treatment arm of a randomized controlled trial. Adult patients with baseline rTNSS ≥6 were treated with TCRF neurolysis at nonoverlapping regions of the PNN. PND and CC symptoms were evaluated on a 0 (none) to 3 (severe) scale. RESULTS: Data from 228 patients (57.9% women, 42.1% men) were included. The mean baseline rTNSS was 8.1 (95% confidence interval [CI], 7.8-8.3), which decreased to 3.2 (95% CI, 2.9-3.5) at 6 months. At baseline, 97.4% of patients had PND and 80.3% had CC. Median baseline PND and CC symptom scores were 3 (interquartile range [IQR], 2-3) and 2 (IQR, 1-2), respectively. At 6 months, this decreased to 1 (IQR, 0-2) and 0 (IQR, 0-1), respectively, showing significant improvement from baseline (both p < 0.001). Spearman correlation coefficients with components of rTNSS (rhinorrhea, congestion, itching, sneezing) were 0.16 to 0.22 for CC and 0.19 to 0.46 for PND, indicating only a weak to moderate correlation. CONCLUSION: PND and CC contribute to the symptomatology of chronic rhinitis and are significantly improved after TCRF neurolysis of the PNN. The inclusion of PND and CC symptoms in a chronic rhinitis assessment instrument could provide important additional information for the characterization of the disease state and outcomes after any therapeutic treatment.


Assuntos
Tosse Crônica , Rinite , Adulto , Feminino , Humanos , Masculino , Tosse/terapia , Mucosa Nasal , Estudos Prospectivos , Rinite/tratamento farmacológico , Rinorreia , Temperatura , Ensaios Clínicos Controlados Aleatórios como Assunto
5.
J Voice ; 2023 Jan 11.
Artigo em Inglês | MEDLINE | ID: mdl-36639311

RESUMO

OBJECTIVE: This case comparison explored the relation between personality, perceived present control, and postoperative voice rest (as estimated by self-report and objective voice use) following surgery for benign vocal fold lesions. METHOD: Two participants were included. Both participants were diagnosed with benign vocal fold pathology, underwent phonosurgery, and were assigned to either complete voice rest (CVR) or relative voice rest (RVR) postoperatively. During voice rest (VR), a visual analog scale (VAS) and a dosimeter (the Vocalog2) were used daily to estimate self-perceived and objective voice use, respectively. The participants also completed questionnaires on voice-related demographics, the Voice Handicap Index (VHI), Ten-Item Personality Inventory (TIPI), and Perceived Present Control (PPC). After 7 days of CVR or RVR, participants completed a postoperative questionnaire and a final VAS for overall voice use. RESULTS: A wide discrepancy was observed in one of two participant's subjective perception of voice use (using the VAS) versus objective dosimetry data wherein she reported significantly more voice use than was observed objectively. Differences in personality and PPC between the participants did not appear to affect their voice use following the VR protocols. CONCLUSION: The amount of voice use in both VR protocols for these two participants suggests that personality and PPC did not affect their adherence to recommendations of VR. Patients may perceive their voice use differently across time, which might play a role in their adherence to voice rest recommendations: voice use measured as instances versus a unit of time (seconds).

6.
Otolaryngol Head Neck Surg ; 169(1): 176-184, 2023 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-36040827

RESUMO

OBJECTIVE: To evaluate the impact of a quality improvement bundle on opioid discharge prescribing following thyroidectomy and parathyroidectomy. METHODS: This before-and-after study included patients undergoing thyroidectomy or parathyroidectomy at an academic medical center. The quality improvement bundle included a patient education flyer, electronic health record order sets with multimodal analgesia regimens, and provider education. The preimplementation cohort included patients treated from January 2018 to December 2019. The postimplementation cohort included patients treated from June 2021 to August 2021. The primary outcome was the proportion of patients who received new opioid discharge prescriptions. RESULTS: A total of 160 patients were included in the preimplementation cohort, and the first 80 patients treated after bundle implementation were included in the postimplementation cohort. Patients receiving new opioid discharge prescriptions decreased from 80% (128/160) in the preimplementation cohort to 35% (28/80) in the postimplementation cohort with an unadjusted absolute reduction of 45% (95% CI, 33%-57%; P < .001; number needed to treat = 3) and an adjusted odds ratio (OR) of 0.08 (95% CI, 0.04-0.19; P < .001). The bundle was associated with reductions in opioid discharge prescriptions that exceeded 112.5 oral morphine milligram equivalents (33% pre- vs 10% postimplementation; adjusted OR, 0.20; P = .001) or 5 days of therapy (17% pre- vs 6% postimplementation; adjusted OR, 0.34; P = .049). DISCUSSION: Implementation of a pain management quality improvement bundle reduced opioid discharge prescribing following thyroidectomy and parathyroidectomy. IMPLICATIONS FOR PRACTICE: Unnecessary opioid prescriptions generate unused opioids in patients' homes that can lead to opioid misuse. We believe that this bundle reduced the risk for opioid misuse in our community. REGISTRATION: The study was registered at ClinicalTrials.gov (NCT04955444) before implementation.


Assuntos
Analgésicos Opioides , Transtornos Relacionados ao Uso de Opioides , Humanos , Analgésicos Opioides/uso terapêutico , Glândula Tireoide , Alta do Paciente , Dor Pós-Operatória/tratamento farmacológico , Estudos Retrospectivos , Prescrições de Medicamentos
7.
Head Neck ; 42(10): 2791-2800, 2020 10.
Artigo em Inglês | MEDLINE | ID: mdl-32484591

RESUMO

BACKGROUND: We report outcomes for patients with T2N0M0 glottic squamous cell carcinoma (SCC) treated with radiation therapy (RT). METHODS: Patients who received definitive RT for T2 glottic SCC from 2000 through 2013 were retrospectively reviewed. RESULTS: One hundred and thirteen patients were analyzed (median follow-up time 91 months; 85 patients received three-dimensional conformal radiotherapy [3D-CRT] and 28 received intensity-modulated radiation therapy [IMRT]). Fractionation was conventional (58%) or altered (42%); 20 patients (18%) received concurrent chemotherapy. Five-year local control was 83% for the 3D-CRT vs 81% for the IMRT group (P = .76). The ultimate locoregional control at 5 years was 100% for IMRT vs 91% for 3D-CRT (P = .1). The 5-year overall survival (OS) was 78% for 3D-CRT vs 81% for IMRT (P = .83). On multivariate analysis, younger age was the only independent predictor of improved OS (P = .0002). CONCLUSIONS: Oncologic and survival outcomes were excellent for patients with T2N0 glottic cancer. Patients treated with IMRT and 3D-CRT had no statistically significant differences in all investigated endpoints.


Assuntos
Neoplasias de Cabeça e Pescoço , Radioterapia Conformacional , Radioterapia de Intensidade Modulada , Humanos , Estudos Retrospectivos , Carcinoma de Células Escamosas de Cabeça e Pescoço/radioterapia
8.
Laryngoscope ; 130(1): 146-153, 2020 01.
Artigo em Inglês | MEDLINE | ID: mdl-30756394

RESUMO

OBJECTIVES: We aim to report oncologic outcomes after conventional radiotherapy (ConRT) using opposed lateral beams and intensity-modulated radiation therapy (IMRT) for tumor (T)1 nodal (N)0 T1 N0 glottic squamous cell carcinoma. STUDY DESIGN: Retrospective case-control study. METHODS: We retrospectively reviewed demographic, disease, and treatment characteristics for patients treated at our institution during 2000 to 2013. RESULTS: One hundred fifty-three patients (71%) were treated using ConRT and 62 (29%) using IMRT. The median follow-up for all patients was 68 months. There was no statistically significant difference in 5-year local control between patients with T1a versus T1b disease (94% vs. 89%, respectively, P = 0.5). Three-year locoregional control for patients treated with ConRT was 94% compared to 97% with IMRT (P = 0.4). Three-year overall survival (OS) for patients treated with ConRT was 92.5% compared with 100% with IMRT (P = 0.1). Twelve of 14 patients with local recurrence underwent salvage surgery with 5-year ultimate locoregional control of 98.5% and 97.1% in the ConRT and IMRT cohorts, respectively (P = 0.7). Multivariate analysis showed age < 60 years (P < 0.0001) and pretreatment Eastern Cooperative Oncology Group performance status <2 (P = 0.0022) to be independent correlates of improved OS. Postradiation cerebrovascular events were in four patients in the ConRT cohort (3%), whereas no patients in the IMRT cohort suffered any events. CONCLUSION: Because the oncologic outcomes for patients treated with IMRT were excellent and IMRT allows for carotid sparing, we have transitioned to IMRT as our standard for most patients with T1 glottic cancer. LEVEL OF EVIDENCE: 3b Laryngoscope, 130:146-153, 2020.


Assuntos
Carcinoma de Células Escamosas/radioterapia , Glote , Neoplasias Laríngeas/radioterapia , Radioterapia de Intensidade Modulada/métodos , Carcinoma de Células Escamosas/patologia , Artérias Carótidas , Estudos de Casos e Controles , Feminino , Humanos , Neoplasias Laríngeas/patologia , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Tratamentos com Preservação do Órgão , Estudos Retrospectivos , Resultado do Tratamento
9.
Int J Pediatr Otorhinolaryngol ; 79(8): 1320-3, 2015 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-26093531

RESUMO

OBJECTIVE: To provide detailed information about recurrent laryngeal nerve (RLN) reinnervation outcomes in children using objective measures. METHODS: The records of three pediatric patients with unilateral vocal cord paralysis that underwent RLN reinnervation were retrospectively reviewed. Fundamental frequency (F0), jitter, shimmer, noise-to-harmonic ratio (NHR), and voice phonation (sustained /s/, /z/, /a/) were measured preoperatively and post-operatively at 13, 9, and 33 months (each time period corresponding to one of the three patients). RESULTS: Mean preoperative and post-operative variables were as follows: shimmer, 9.65±1.02% vs. 4.46±0.71% (p=0.01); NHR, 0.296±0.063 vs. 0.127±0.011 (p=0.04); jitter, 3.57±0.89% vs. 1.46±0.54% (p=0.08); F0, 274.6±35.4Hz vs. 282.2±70.6Hz (p=0.44); maximum phonation time, 7.46±1.40s vs. 9.79±1.84s (p=0.22); /s:z/ ratio, 1.28±0.22 vs.1.07±0.09 (p=0.26). CONCLUSIONS: There was statistically significant improvement in shimmer and NHR. Jitter improvement approached statistical significance. All other variables failed to show significant improvement among this small sample size. RLN reinnervation for pediatric patients is an option for the treatment of vocal cord paralysis. Further studies with larger cohorts are needed to show the full benefits.


Assuntos
Procedimentos Neurocirúrgicos , Nervo Laríngeo Recorrente/cirurgia , Paralisia das Pregas Vocais/cirurgia , Criança , Feminino , Seguimentos , Humanos , Masculino , Estudos Retrospectivos , Resultado do Tratamento
10.
Ear Nose Throat J ; 88(2): E8-12, 2009 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-19224471

RESUMO

Ehlers-Danlos syndrome (EDS) comprises a group of related hereditary connective tissue diseases. EDS manifests as joint hypermobility, tissue elasticity, and easy bruising. Although affected patients typically present to primary care physicians, orthopedists, and rheumatologists, some head and neck symptoms (e.g., dysphonia, dysphagia, and/or temporomandibular joint complaints) may direct some to an otolaryngologist. We describe the cases of 2 patients who presented to our otolaryngology clinic for evaluation of dysphonia. On physical examination, both exhibited tongue hypermobility, and both were subsequently diagnosed with EDS. We also review the results of our comprehensive literature search, in which we found only 3 articles that specifically described tongue hypermobility; in each case, the hypermobility was related to EDS. Finally, we discuss presentations of EDS that otolaryngologists might encounter.


Assuntos
Disfonia/diagnóstico , Síndrome de Ehlers-Danlos/diagnóstico , Instabilidade Articular/etiologia , Doenças da Língua/etiologia , Adulto , Disfonia/etiologia , Síndrome de Ehlers-Danlos/complicações , Síndrome de Ehlers-Danlos/fisiopatologia , Feminino , Humanos , Instabilidade Articular/fisiopatologia , Laringoscopia , Masculino , Estroboscopia , Doenças da Língua/fisiopatologia
11.
Neurosurgery ; 60(6): E1150; discussion 1150, 2007 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-17538363

RESUMO

OBJECTIVE: The cerebellopontine angle (CPA) is a rare location for an arachnoid cyst. We describe a patient with a CPA arachnoid cyst who presented with hoarseness (unilateral vocal cord paralysis) and dysphagia secondary to isolated compression of the vagus nerve. This rare presentation of a CPA arachnoid cyst has not been reported previously. CLINICAL PRESENTATION: The patient described is a 50-year-old man who experienced a precipitous onset of hoarseness and dsyphagia. An otolaryngological evaluation revealed right-sided vocal cord paralysis. Brain magnetic resonance images displayed a cystic mass at the right CPA and anterior displacement of the vagus nerve. INTERVENTION: The patient underwent retrosigmoidal craniectomy with cyst fenestration, which was well tolerated. Intraoperatively, Cranial Nerve X was found splayed over the cyst and was consequently decompressed. CONCLUSION: Postoperatively, the patient's dysphagia completely resolved. However, the results of a laryngeal electromyocardiogram revealed minimal evidence of recovery in the affected vocal fold, and the patient continued to suffer from dysphonia. Although CPA arachnoid cysts are rare, they should be considered when a patient presents with an isolated cranial nerve palsy. Treatment options include cyst fenestration and cranial nerve decompression.


Assuntos
Cistos Aracnóideos/complicações , Ângulo Cerebelopontino , Síndromes de Compressão Nervosa/etiologia , Doenças do Nervo Vago/etiologia , Cistos Aracnóideos/diagnóstico , Cistos Aracnóideos/cirurgia , Humanos , Masculino , Pessoa de Meia-Idade
12.
J Voice ; 18(3): 387-91, 2004 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-15331112

RESUMO

Symptoms of unilateral vocal fold paralysis are improved significantly by augmenting the paralyzed vocal fold via vocal fold injection. In this trial, augmentation with a new calcium hydroxylapatite implant was evaluated. In addition, two different phonosurgical injection techniques were used, and these procedures were compared for accuracy and reliability. A total of 11 terminal patients with unilateral vocal fold paralysis underwent vocal fold injection with calcium hydroxylapatite. Efficacy of the implant was evaluated by comparing results from the Voice Handicap Index (VHI) and mean airflow measurements before and 6 months after injection. Surgeon evaluations determined the comparative benefits of either endoscopic direct vocal fold injection or percutaneous vocal fold injection. Six-month data were obtained for a cohort of five patients. VHI scores improved for all five patients available for full evaluation and four of the five achieved improvements in mean airflow rates. Of the remaining patients, one later had a medialization laryngoplasty, two died from their terminal diseases before the 6-month follow-up, and two of the remaining three reported satisfaction with the results via telephone follow-up. Vocal fold injection via endoscopic, direct laryngoscopy was found to be a more reliable procedure for vocal fold injection than percutaneous injection. Slight overinjection (10% to 15%) was found to provide optimum results. Vocal fold injection of calcium hydroxylapatite for unilateral vocal fold paralysis improved voice quality and reduced mean airflow rates in this patient group with short-term results. Long-term studies are needed to confirm the durability of these findings.


Assuntos
Materiais Biocompatíveis/administração & dosagem , Durapatita/administração & dosagem , Próteses e Implantes , Paralisia das Pregas Vocais/cirurgia , Prega Vocal/cirurgia , Idoso , Feminino , Humanos , Injeções/métodos , Laringoscopia , Masculino , Espirometria , Estroboscopia , Resultado do Tratamento
13.
Am J Otolaryngol ; 25(4): 295-300, 2004.
Artigo em Inglês | MEDLINE | ID: mdl-15239042

RESUMO

Paragangliomas are rare tumors that derive from neural crest tissue. Vagal paragangliomas account for only 3% of all head and neck paragangliomas. Patients with vagal paragangliomas typically present with an asymptomatic neck mass and, less frequently, with cranial neuropathies. It is estimated that only 1% to 3% of all head and neck paragangliomas secrete catecholamines. The incidence of secreting vagal paragangliomas is even smaller. The diagnosis of a secreting paraganglioma involves the use of a screening test for serum catecholamines and a 24-hour urinary test for catecholamine metabolites. The identification and staging of these tumors can be performed through the use of MRI and/or CT scans and an octreotide scintigraphy. The mainstay treatment is surgical extirpation; however, preoperative medical blockade is critical to avoid a hypertensive crisis intra-operatively. We present two illustrative cases of secreting vagal paragangliomas involving a complex diagnostic and therapeutic algorithm.


Assuntos
Neoplasias de Cabeça e Pescoço/metabolismo , Paraganglioma/metabolismo , Nervo Vago , Adulto , Feminino , Neoplasias de Cabeça e Pescoço/diagnóstico , Neoplasias de Cabeça e Pescoço/cirurgia , Humanos , Imageamento por Ressonância Magnética , Pessoa de Meia-Idade , Pescoço/cirurgia , Paraganglioma/diagnóstico , Paraganglioma/cirurgia , Tomografia Computadorizada por Raios X
14.
Ann Otol Rhinol Laryngol ; 113(2): 97-107, 2004 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-14994762

RESUMO

Intrinsic laryngeal muscle investigations, especially those of the interarytenoid (IA) muscle, have been primarily teleologically based. We determined IA muscle anatomy and histochemical and immunohistochemical classification of extrafusal and intrafusal (muscle spindle) fibers in 5 patients. Extrafusal fibers were oxidative type I and glycolytic types IIA and IIX. Intrafusal fibers of muscle spindles were identified by the presence of tonic and neonatal myosin. The results demonstrate that the IA muscle has a phenotype similar to that of limb skeletal muscle. Myosin coexpression, the absence of intrafusal fibers, and fiber type grouping were unusual features found previously in the thyroarytenoid and posterior cricoarytenoid muscles, but they were not present in the IA muscle. These findings lead to the conclusion that the IA muscle has functional significance beyond its assumed importance in maintaining vocal fold position during phonation. The presence of spindles demonstrates differences in motor control as compared to the thyroarytenoid and posterior cricoarytenoid muscles. Further, extrafusal fiber characteristics implicate IA muscle involvement in muscle tension dysphonia and adductor spasmodic dysphonia. Given the unique physiologic characteristics of the human IA muscle, further research into the role of the IA muscle in voice disorders is warranted.


Assuntos
Músculos Laríngeos/anatomia & histologia , Fibras Musculares Esqueléticas/classificação , Trifosfato de Adenosina/metabolismo , Idoso , Anticorpos/análise , Cartilagem Aritenoide/anatomia & histologia , Desidrogenases de Carboidrato/análise , Feminino , Glicerol-3-Fosfato Desidrogenase (NAD+) , Glicerolfosfato Desidrogenase/análise , Humanos , Imuno-Histoquímica , Músculos Laríngeos/citologia , Músculos Laríngeos/inervação , Músculos Laríngeos/metabolismo , Masculino , Fibras Musculares Esqueléticas/metabolismo , Fibras Musculares Esqueléticas/ultraestrutura , Fusos Musculares/anatomia & histologia , Fusos Musculares/metabolismo , Miofibrilas/enzimologia , Cadeias Pesadas de Miosina/imunologia , Cadeias Pesadas de Miosina/metabolismo , Coloração e Rotulagem
15.
Otolaryngol Clin North Am ; 35(5): 953-69, v, 2002 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-12587242

RESUMO

Laryngeal carcinoma must be diagnosed expeditiously to maximize curative efforts. Our approach combines useful aspects of the patient's presentation with application of appropriate diagnostic modalities. Newer methods of assessment and follow-up are being scientifically validated and will likely enhance the diagnostic efforts of the head and neck surgical oncologist.


Assuntos
Carcinoma de Células Escamosas/diagnóstico , Neoplasias Laríngeas/diagnóstico , Consumo de Bebidas Alcoólicas/efeitos adversos , Biomarcadores/análise , Carcinoma de Células Escamosas/etiologia , Carcinoma de Células Escamosas/patologia , Carcinoma de Células Escamosas/cirurgia , Feminino , Genes p53/genética , Humanos , Neoplasias Laríngeas/etiologia , Neoplasias Laríngeas/patologia , Neoplasias Laríngeas/cirurgia , Masculino , Pessoa de Meia-Idade , Recidiva Local de Neoplasia , Estadiamento de Neoplasias , Fatores de Risco , Fumar/efeitos adversos
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