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PURPOSE: Nasal septal perforation (NSP) repair is a complex procedure with variable techniques and success rates. In this study we describe NSP repair using a trilayer interposition graft of temporalis fascia and thin polydioxanone (PDS) plate without intranasal flaps and report outcomes in our patient population. MATERIALS AND METHODS: IRB-approved retrospective review of 20 consecutive patients presenting to a tertiary medical center with NSP from September 2018 to December 2020 and who underwent NSP repair via our trilayer temporalis fascia interposition graft. De-identified patient data was obtained from the medical record and stored on an encrypted secure server. Descriptive statistics were examined for each variable. RESULTS: All 20 NSP repairs demonstrated durable repair with complete mucosal coverage at last follow-up (average 7 months). Complete resolution of preoperative symptoms was achieved in 85 % of patients, with partial resolution in the remaining 15 %. Of the 20 perforations 25 % were small (<1 cm), 50 % medium (1-2 cm), and 25 % large (>2 cm). The only surgical complication was a single intranasal synechiae. No graft harvest site complications were noted. CONCLUSION: The application of a trilayer temporalis fascia - PDS plate interposition graft without intranasal flaps is highly effective for repair of NSP.
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Perfuração do Septo Nasal , Rinoplastia , Humanos , Perfuração do Septo Nasal/cirurgia , Resultado do Tratamento , Retalhos Cirúrgicos , Fáscia/transplante , Estudos Retrospectivos , Complicações Pós-Operatórias/cirurgia , Septo Nasal/cirurgia , Rinoplastia/métodosRESUMO
INTRODUCTION: The profunda artery perforator (PAP) fasciocutaneous flap is underutilized in head and neck reconstruction, with advantages including ease of harvest and minimal donor site morbidity. METHODS: Cadaveric dissection of cutaneous perforators to origin at profunda femoris system to characterize vascular anatomy. RESULTS: 22 PAP flaps were studied. Each contained 1-6 cutaneous perforators originating from the profunda system, designated into A, B, or C vascular pedicle systems. Muscular perforators did not consistently extend to skin in systems A and C, but all dissections demonstrated myocutaneous perforator in system B. Average distance from groin crease to cutaneous perforators of A, B, and C respectively was 8 cm (range 3-15 cm), 11.4 cm (range 5-17 cm), and 17.5 cm (range 12.5-22 cm). Average pedicle length was 11.07 cm (range 7-16 cm), 11.78 cm (range 9-16 cm), and 11.23 cm (range 9-15 cm). Average vena comitans diameter at origin was 3.14 mm (range 1.27-4.46 mm). Average arterial diameter at origin was 2.07 mm (range 1.27-3.82 mm). Range of maximal primary closure was 6-11 cm. CONCLUSION: PAP free flap demonstrates reliable vascular anatomy in cadavers, with adequate pedicle length and vessel diameter. All specimens contained adequate myocutaneous perforator to support free tissue transfer.
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Retalho Miocutâneo , Retalho Perfurante , Procedimentos de Cirurgia Plástica , Humanos , Retalho Perfurante/cirurgia , Retalho Perfurante/transplante , Artérias/cirurgia , Retalho Miocutâneo/transplante , Coxa da Perna/cirurgiaRESUMO
Patients undergoing free tissue reconstruction are at risk for development of an anastomotic pseudoaneurysm, which may present as delayed neck hemorrhage or a pulsatile neck mass. Diagnosis may be achieved by noninvasive imaging, angiography, and exploration. Management strategies for head and neck pseudoaneurysms have included open vessel ligation, open direct vessel repair, endovascular parent vessel embolization, and, most recently, endovascular pseudoaneurysm embolization. In patients with anastomotic pseudoaneurysms where adequate flap inosculation is doubted, endovascular pseudoaneurysm embolization with pedicle preservation may be an appropriate primary treatment approach. We discuss the successful endovascular coiling of an external carotid artery branch anastomotic pseudoaneurysm in a patient one month after free tissue reconstruction of a total laryngopharyngectomy and partial glossectomy defect.
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Falso Aneurisma/terapia , Carcinoma de Células Escamosas/cirurgia , Retalhos de Tecido Biológico/transplante , Neoplasias Laríngeas/patologia , Neoplasias Laríngeas/cirurgia , Neoplasias da Língua/cirurgia , Idoso , Falso Aneurisma/diagnóstico por imagem , Falso Aneurisma/etiologia , Carcinoma de Células Escamosas/patologia , Artéria Carótida Externa/diagnóstico por imagem , Embolização Terapêutica/métodos , Seguimentos , Retalhos de Tecido Biológico/efeitos adversos , Glossectomia/métodos , Glote/patologia , Glote/cirurgia , Sobrevivência de Enxerto , Humanos , Masculino , Faringectomia/métodos , Procedimentos de Cirurgia Plástica/métodos , Medição de Risco , Fumar/efeitos adversos , Neoplasias da Língua/secundárioRESUMO
Rhinoplasty often requires the use of grafting material, and the goal of the specific graft dictates the ideal characteristics of the material to be used. An ideal material would be biologically inert, resistant to infection, noncarcinogenic, nondegradable, widely available, cost-effective, readily modifiable, and easily removable, have compatible biomechanical characteristics, retain physical properties over time, and not migrate. Unfortunately, no material currently in existence meets all of these criteria. In modern rhinoplasty, autologous grafts are the gold standard against which all other nasal implants are measured and offer the safest long-term results for most patients. They are easily manipulated, have inherent stability and biomechanical characteristics similar to the native nasal framework, and confer minimal risk of complications. Modern homologous and alloplastic materials have gained considerable support in recent years because they are readily available in endless quantity, do not require a second surgical site for harvest, and are generally considered safe if most circumstances, but they confer additional risk and have biomechanical characteristics different from that of the native nasal framework. To address some of these issues, we provide a contemporary review of autologous, homologous, and alloplastic materials commonly used in rhinoplasty surgery.
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Cartilagem/transplante , Próteses e Implantes , Rinoplastia/instrumentação , Materiais Biocompatíveis/efeitos adversos , Transplante Ósseo , História do Século XIX , História do Século XX , História do Século XXI , Humanos , Seleção de Pacientes , Polietileno , Politetrafluoretileno , Próteses e Implantes/efeitos adversos , Próteses e Implantes/história , Rinoplastia/efeitos adversos , Rinoplastia/métodos , Fatores de Risco , Silicones , Transplante HomólogoRESUMO
OBJECTIVES: Self-reported hearing impairment is often used to gauge objective hearing loss in both clinical settings and research studies. The aim of this study was to examine whether demographic factors affect the accuracy of subjective, self-reported hearing in older adults. DESIGN: We examined 3557 participants aged 50 and older in the National Health and Nutrition Examination Survey cycles 1999-2006 and 2009-2010. We examined the relationship between objective and subjective hearing impairment using percent correct classification and misclassification bias in analyses stratified by gender, age group, race/ethnicity, and education. RESULTS: We found that younger participants tended to overestimate and older participants underestimate their hearing impairment. Older women, blacks, and Hispanics were less accurate in self-reporting than their respective younger age groups. CONCLUSIONS: The association between subjective and objective hearing differs across gender, age, race/ethnicity, and education, and this observation should be considered by clinicians and researchers employing self-reported hearing.
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Audiometria de Tons Puros , Audiometria da Fala , Etnicidade , Perda Auditiva/diagnóstico , Autorrelato , Negro ou Afro-Americano , Fatores Etários , Idoso , Idoso de 80 Anos ou mais , Estudos de Coortes , Feminino , Hispânico ou Latino , Humanos , Masculino , Pessoa de Meia-Idade , Inquéritos Nutricionais , Fatores Sexuais , População BrancaRESUMO
PURPOSE: Objective measures of physical functioning and mobility are considered to be the strongest indicators of overall health and mortality risk in older adults. These measures are not routinely used in otolaryngology research. We investigated the feasibility of using a validated physical performance battery to assess the functioning of older adults seen in a tertiary care otolaryngology clinic. MATERIALS AND METHODS: The Short Physical Performance Battery was performed on 22 individuals aged 50 years or older enrolled in the Studying Multiple Outcomes after Aural Rehabilitative Treatment (SMART) study at Johns Hopkins. RESULTS: We successfully administered the SPPB to 22 participants, and this testing resulted in minimal participant and provider burden with respect to time, training, and space requirements. The mean time to complete 5 chair stands was 13.0 ± 3.8 seconds. The mean times for the side-by-side, semi-tandem, and tandem stands were 10.0 ± 0.0, 9.5 ± 2.1, and 8.8 ± 3.2 seconds, respectively. Mean walking speed was 1.1 ± 0.3 meters per second, and composite SPPB scores ranged from 6 to 12 (mean = 10.45, S.D. = 1.6). CONCLUSIONS: Our results demonstrate the feasibility of implementing a standardized physical performance battery to assess physical functioning in a cohort of older adults seen in a tertiary otolaryngology clinic. We provide detailed instructions, references, and analytic methods for implementing the SPPB in future otolaryngology studies involving older adults.
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Otopatias/reabilitação , Indicadores Básicos de Saúde , Idoso , Implantes Cocleares , Estudos de Viabilidade , Feminino , Auxiliares de Audição , Humanos , Masculino , Pessoa de Meia-Idade , Equilíbrio Postural , Estudos Prospectivos , Análise e Desempenho de Tarefas , CaminhadaRESUMO
The greater saphenous vein can be harvested from the standard incision for an anterolateral free flap and used as a vein graft in complex head and neck reconstruction. Laryngoscope, 134:648-650, 2024.
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Retalhos de Tecido Biológico , Neoplasias de Cabeça e Pescoço , Procedimentos de Cirurgia Plástica , Humanos , Retalhos de Tecido Biológico/transplante , Veia Safena/cirurgia , Pescoço/cirurgia , Cabeça/cirurgia , Neoplasias de Cabeça e Pescoço/cirurgiaRESUMO
OBJECTIVES: To characterize the effect of facial reanimation using masseteric nerve transfer on the masseter muscle itself, examining whether there is any demonstrable atrophy postoperatively. METHODS: Electronic medical records of adult patients who underwent facial reanimation using masseteric nerve transfer at our institution over a 15-year period were reviewed. To account for the impact of postoperative radiation, randomly selected patients who underwent radical parotidectomy without nerve transfer and received postoperative radiation served as controls in a 1:1 fashion against those who underwent masseteric nerve transfer with postoperative radiation. RESULTS: Twenty patients were identified who underwent masseteric nerve transfer and had sufficient pre- and postoperative imaging to assess masseter volume (mean age 58.2, 60% female). Of the four patients who did not receive postoperative radiation, each demonstrated masseteric atrophy on the side of their nerve transfer, with a mean reduction in masseter volume of 20.6%. The remaining 16 patients were included in the case-control analysis accounting for radiation. When compared with controls, those in the study group were found to have a statistically significant difference in atrophy (p = 0.0047) and total volume loss (p = 0.0002). The overall reduction in masseter volume in the study group was significantly higher compared with the control group, at 41.7% and 16.6%, respectively (p = 0.0001). CONCLUSION: Facial reanimation utilizing masseteric nerve transfer appears to result in atrophy of the denervated masseter when compared with the contralateral muscle. This volume deficit may lead to further facial asymmetry for patients undergoing comprehensive reanimation surgery. LEVEL OF EVIDENCE: 3 Laryngoscope, 2024.
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OBJECTIVE: To evaluate national trends in racial disparities for patients undergoing head and neck reconstructive surgery. METHODS: Retrospective analysis using the 2008 to 2021 American College of Surgeons National Surgical Quality Improvement Program database. Patients receiving microvascular free tissue transfer were eligible for inclusion. Pediatric patients and those treated by non-otolaryngologists were excluded. Outcomes were analyzed with univariate and multivariable models. RESULTS: A total of 5831 head and neck free flap cases were analyzed, 4869 (83.5%) were White, 560 (9.6%) were Black or African American, and 402 (6.9%) were Asian, Native American, or other groups (ANAOG). The proportion of Black or African American patients and ANAOG patients undergoing free tissue transfer increased significantly over the time period (p = 0.047 and p = 0.010, respectively). However, there was a downtrend that started around 2017. In a multivariable model, Black or African American race was not associated with readmission (OR = 0.99 [95% CI 0.74, 1.31], p > 0.05), returning to the operating room (OR = 1.20 [95% CI 0.96, 1.49], p > 0.05), or any post-operative complication (OR = 0.83 [95% CI 0.68, 1.01], p > 0.05). There were also no significant associations found in the ANAOG population on multivariate analysis (p > 0.05 for all). CONCLUSION: The percentage of free tissue transfer performed in patients from minority backgrounds with head and neck cancer has been increasing in the United States. Outcomes after head and neck microvascular reconstruction are similar when stratified by race. However, racial disparities remain and further work is necessary to reduce these disparities. LEVEL OF EVIDENCE: Level IV Laryngoscope, 2024.
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OBJECTIVE: In 2013, the American Academy of Otolaryngology-Head and Neck Surgery (AAO-HNS) published guidelines for Bell's palsy (BP), including recommendations for workup, management, and specialist referral. Patients with BP often present to primary care; however, adherence to guidelines may vary by setting. This study sought to evaluate the management of patients with BP presenting to primary care, emergency department (ED), and urgent care settings. STUDY DESIGN: Retrospective cohort study. SETTING: Tertiary care center. METHODS: Retrospective chart review of patients identified by diagnosis code for BP. RESULTS: A total of 903 patients were included; 687 (76.1%) presented to ED, 87 (9.6%) to internal medicine, 77 (8.5%) to family medicine, and 52 (5.8%) to urgent care. On presentation, 804 (89.0%) patients were prescribed corticosteroids and 592 (65.6%) antiviral therapy. Steroid therapy ranged from 1 dose to greater than a 14-day course, with 177 (19.6%) receiving an adequate duration of 10 days or greater. Referrals were provided to facial plastics and/or otolaryngology for 51 patients (5.6%). For all comers, 283 (31.3%) had complete resolution, 197 (21.8%) had an incomplete resolution, 62 (6.9%) had persistent palsy, and 361 (40.0%) lost to follow-up. In assessing the association between clinic setting and management, appropriate corticosteroid therapy (p < .01), imaging (p < .01), and eye care (p < .01) were statistically significant. CONCLUSION: Adherence to guidelines for BP management varies amongst providers. In our study cohort, 15.5% of patients received medical therapy in accordance with AAO-HNS guidelines, and only 5.6% were referred to facial plastics. To facilitate more appropriate care, tertiary care institutions may benefit from system-wide care pathways to manage acute BP.
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Paralisia de Bell , Paralisia Facial , Humanos , Paralisia de Bell/diagnóstico , Paralisia de Bell/tratamento farmacológico , Estudos Retrospectivos , Encaminhamento e Consulta , Plásticos/uso terapêuticoRESUMO
The purpose of this review was to study the evaluation, diagnosis, and management of ophthalmic complications associated with facial nerve palsy and to discuss the current and future interventions. The ophthalmic complications of facial paralysis include lagophthalmos, ectropion, exposure keratopathy, ocular synkinesis, and crocodile tears. Evaluation by an ophthalmologist skilled in recognizing and managing complications of facial paralysis shortly after its initial diagnosis can help identify and prevent long-term complications. Several types of grading scales are used to evaluate, measure the severity, and track surgical and patient-reported treatment outcomes. Lagophthalmos or ectropion are managed using temporary measures aimed at lubricating and covering the eye, including scleral lenses; however, these measures can be expensive and challenging to acquire and maintain. Temporary surgical interventions include lateral tarsorrhaphy, weighted eyelid implants, lateral canthoplasty, and other procedures that tighten or lift the eyelid or surrounding tissues. Management of flaccid facial paralysis due to iatrogenic injury or neoplasm requires neurorrhaphy or graft repair. The most common techniques for dynamic reconstruction in chronic facial paralysis are regional and free muscle flap transfer. Future directions for the management of ophthalmic complications aim to induce blinking and eye closure by developing systems that can detect blinking in the normal eye and transmit the signal to the paralyzed eye using mechanisms that would stimulate the muscles to induce eyelid closure. Blink detection technology has been developed, and a study demonstrated that blinking can be stimulated using electrodes on the zygomatic branch of the facial nerve. Further studies are needed to develop a system that will automate blinking and synchronize it with that of the normal eye.
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Ectrópio , Doenças Palpebrais , Paralisia Facial , Humanos , Paralisia Facial/diagnóstico , Paralisia Facial/etiologia , Paralisia Facial/terapia , Ectrópio/cirurgia , Pálpebras/cirurgia , Nervo Facial , Piscadela , Doenças Palpebrais/cirurgiaRESUMO
This review aims to summarize recent studies regarding the specific modalities of physical therapy as a form of treatment for patients with facial paralysis, analyze the different components of physical therapy, and provide healthcare providers with guidance for their best practice in treating patients with facial paralysis. This paper will discuss the mechanism, indications, and impact factors for facial retraining, evaluate the standards for facial retraining, the creation of a treatment plan, and analyze the combined use of facial retraining with botulinum toxin injections and the application of facial retraining in post facial reanimation patients. Other modes of physical therapy, including electrical stimulation, dry needling, and acupuncture, will be addressed. Lastly, the application of new digital technology will be discussed.
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Toxinas Botulínicas Tipo A , Paralisia Facial , Sincinesia , Humanos , Paralisia Facial/terapia , Músculos Faciais , Modalidades de Fisioterapia , Face , Sincinesia/tratamento farmacológicoRESUMO
Facial nerve function is essential for a multitude of processes in the face, including facial movement; expression; and functions, such as eating, smiling, and blinking. When facial nerve function is disrupted, facial paralysis may occur and various complications for the patient may result. Much research has been conducted on the physical diagnosis, management, and treatment of facial paralysis. However, there is a lack of knowledge of the psychological and social effects of the condition. Patients may be at an increased risk for anxiety and depression, as well as negative self and social perceptions. This review analyzes the current literature on the various adverse psychological and psychosocial effects of facial paralysis, factors that may play a role, and treatment options that may help improve patients' quality of life.
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Paralisia Facial , Humanos , Paralisia Facial/etiologia , Paralisia Facial/psicologia , Qualidade de Vida/psicologia , Sorriso , Ansiedade , Percepção Social , Nervo Facial , Expressão FacialRESUMO
Importance: Mandibular osteoradionecrosis (ORN) is a progressive disease that can be difficult to treat. Conservative measures often fail, while conventional definitive management requires a morbid segmental resection with osteocutaneous reconstruction. Evidence of the anterolateral thigh fascia lata (ALTFL) rescue flap technique's safety, effectiveness, and long-term outcomes is needed. Objective: To determine the long-term outcomes of the ALTFL rescue flap procedure for treating patients with mandibular ORN. Design, Settings, and Participants: This was a retrospective medical record review performed at a single tertiary-level academic health care institution with patients who were appropriate candidates for the ALTFL procedure to treat mandibular ORN from March 3, 2011, to December 31, 2022. Data analyses were performed from January 1 to March 26, 2023. Main Outcomes and Measures: Patient characteristics, preoperative radiographic Notani staging, intraoperative defect size, length of stay, complication rates, and clinical and radiographic findings of progression-free intervals. Results: The study population of 43 patients (mean [SD] age, 66.1 [47-80] years; 24 [55.8%] male individuals) included 52 cases of mandibular ORN. The preoperative Notani staging of the study population was known for 46 of the 52 total cases: 11 cases (23.9%) were stage I; 21 (45.7%), stage II; and 14 (30.4%), stage III. The mean defect area was 20.9 cm2. Successful arrest of ORN disease progression was noted in the clinical and radiographic findings of 50 of the 52 (96.2%) cases, with only 2 (3.8%) cases subsequently requiring fibular free flap reconstruction. The major complication rate was 1.9% (1 case). Clinical and radiographic progression-free intervals were assessed, and no statistically significant differences were noted between Notani staging groups (log-rank P = .43 and P = .43, respectively); ie, patients with stage III disease had no significant difference in risk of clinical (HR, 0.866; 95% CI, 0.054-13.853) or radiographic (HR, 0.959; 95% CI, 0.059-15.474) progression vs those with stage I disease. Weibull profiling revealed 96.9%, 94.6%, and 93.1% successful mandibular ORN arrest at 1, 3, and 5 years, respectively. The major complication rate was 1.9%. Mean (SD) length of stay was 2.7 (0.0-7.0) days. Mean (SD) radiographic follow-up was 29.3 (30.7) months. Conclusions and Relevance: The findings of this large retrospective patient case series support the continued success of the ALTFL rescue flap technique, a safe and highly effective long-term treatment for mandibular ORN in carefully selected patients.
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Retalhos de Tecido Biológico , Doenças Mandibulares , Osteorradionecrose , Humanos , Masculino , Idoso , Feminino , Estudos Retrospectivos , Coxa da Perna/cirurgia , Fascia Lata , Osteorradionecrose/cirurgia , Osteorradionecrose/complicações , Osteorradionecrose/epidemiologia , Resultado do Tratamento , Doenças Mandibulares/cirurgia , Doenças Mandibulares/etiologiaRESUMO
BACKGROUND: Resected oral cavity carcinoma defects are often reconstructed with osteocutaneous or soft-tissue free flaps, but risk of osteoradionecrosis (ORN) is unknown. METHODS: This retrospective study included oral cavity carcinoma treated with free-tissue reconstruction and postoperative IMRT between 2000 and 2019. Risk-regression assessed risk factors for grade ≥2 ORN. RESULTS: One hundred fifty-five patients (51% male, 28% current smokers, mean age 62 ± 11 years) were included. Median follow-up was 32.6 months (range, 1.0-190.6). Thirty-eight (25%) patients had fibular free flap for mandibular reconstruction, whereas 117 (76%) had soft-tissue reconstruction. Grade ≥2 ORN occurred in 14 (9.0%) patients, at a median 9.8 months (range, 2.4-61.5) after IMRT. Post-radiation teeth extraction was significantly associated with ORN. One-year and 10-year ORN rates were 5.2% and 10%, respectively. CONCLUSIONS: ORN risk was comparable between osteocutaneous and soft-tissue reconstruction for resected oral cavity carcinoma. Osteocutaneous flaps can be safely performed with no excess concern for mandibular ORN.
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Carcinoma , Retalhos de Tecido Biológico , Doenças Mandibulares , Osteorradionecrose , Radioterapia de Intensidade Modulada , Humanos , Masculino , Pessoa de Meia-Idade , Idoso , Feminino , Estudos Retrospectivos , Radioterapia de Intensidade Modulada/efeitos adversos , Osteorradionecrose/etiologia , Osteorradionecrose/cirurgia , Doenças Mandibulares/etiologia , Doenças Mandibulares/cirurgia , BocaRESUMO
Importance: Traditional techniques of facial reanimation using gracilis free tissue transfer do not address the lower eyelid or provide contraction at the site of orbicularis oculi, which is necessary to create a natural appearing Duchenne smile. In this report, we describe a novel technique to achieve this element of a true mimetic smile using a tri-vector gracilis muscle flap. Objective: To describe a novel gracilis free flap technique for facial reanimation to provide contraction of the inferior and lateral orbicularis oculi and achieve a Duchenne smile. Design, Setting, and Participants: This was a surgical pearls-description of a novel surgical technique at Academic Tertiary Medical Center. Three patients underwent the operation.
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Paralisia Facial , Músculo Grácil , Procedimentos de Cirurgia Plástica , Humanos , Músculo Grácil/transplante , Paralisia Facial/cirurgia , Procedimentos de Cirurgia Plástica/métodos , Estudos Retrospectivos , Resultado do TratamentoAssuntos
Efeitos Psicossociais da Doença , Nível de Saúde , Hospitalização/estatística & dados numéricos , Idoso , Idoso de 80 Anos ou mais , Doenças Cardiovasculares/epidemiologia , Feminino , Serviços de Saúde/estatística & dados numéricos , Perda Auditiva , Humanos , Masculino , Inquéritos Nutricionais , Fatores de Risco , Estados Unidos/epidemiologiaRESUMO
BACKGROUND: Vocal fold motion impairment (VFMI) is a well-recognized complication of thyroid and parathyroid surgery. Preoperative counseling requires a thorough understanding of the incidence, risk factors, and value of early diagnosis of postoperative VFMI. Our objective is to describe the incidence of and risk factors for VFMI for a single high-volume academic surgeon, and to assess the utility of immediate postoperative fiberoptic laryngoscopy (FOL) in early diagnosis of VFMI. METHODS: Retrospective cohort study of patients undergoing primary thyroid and parathyroid procedures by a single high-volume surgeon at an academic tertiary care center. All patients underwent preoperative and immediate postoperative FOL. The primary outcome was incidence of VFMI, either temporary (<1 year) or permanent (1 year or more). The unit of analysis was number of recurrent laryngeal nerves (RLN) at risk. Risk factors for VFMI were analyzed using logistic regression, reporting unadjusted and adjusted odds ratios (OR and aOR) and 95% confidence intervals (CI). RESULTS: The study population comprised 1547 patients undergoing 1580 procedures for a total of 2527 nerves at risk, excluding the 27 nerves found to have motion impairment on preoperative FOL. Sixty-seven new incidents of VFMI were identified on postoperative FOL, with an additional six new incidents detected after voice complaints prompted FOL upon follow-up. Thus, the incidence of postoperative VFMI was 2.9% of RLNs at risk (73 of 2527). The sensitivity and negative predictive value of immediate postoperative FOL were 92% and 99.8% respectively. Permanent VFMI occurred in 9 cases (0.4%), 3 of which were from intentional RLN transection for malignancy. Odds of VFMI were significantly lower after parathyroidectomy (aORâ¯=â¯0.1, 95%CIâ¯=â¯0.01-0.8 compared with hemithryoidectomy) and higher with central neck dissection (aORâ¯=â¯2.4, 95CIâ¯=â¯1.0-5.9). Among cases of malignancy, odds of VFMI increased significantly with increasing T-stage (adjusted ptrend<0.001). CONCLUSION: VFMI is rare and usually temporary after primary thyroid and parathyroid procedures, with increased risk associated with larger primary malignancies and the inclusion of central neck dissection. Immediate postoperative FOL is useful for early detection of VFMI that may allow for clear definition of temporary and permanent immobility rehabilitation especially if there is evidence to support early intervention.
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Laringoscopia/estatística & dados numéricos , Glândulas Paratireoides/cirurgia , Complicações Pós-Operatórias/epidemiologia , Glândula Tireoide/cirurgia , Paralisia das Pregas Vocais/epidemiologia , Adulto , Idoso , Feminino , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , Complicações Pós-Operatórias/diagnóstico , Complicações Pós-Operatórias/etiologia , Valor Preditivo dos Testes , Nervo Laríngeo Recorrente/cirurgia , Traumatismos do Nervo Laríngeo Recorrente/etiologia , Estudos Retrospectivos , Fatores de Risco , Sensibilidade e Especificidade , Paralisia das Pregas Vocais/diagnóstico , Paralisia das Pregas Vocais/etiologia , Prega Vocal/lesões , Prega Vocal/cirurgiaRESUMO
5-Ammonionaphthalene-1-sulfonate monohydrate, C10H9NO3S x H2O, contains layers of zwitterionic molecules with the acidic sulfonic acid H atom transferred to the amine N atom. Within each layer, the charged groups (NH3(+) and SO3(-)) are directed to the surface of the layer and are inverted on adjacent molecules. The naphthalene rings in a given layer are all parallel. The layers are held together by N-H...O and O-H...O hydrogen bonds involving the ammonium, sulfonate and water atoms. The Mn and Ni salts crystallize as fully aquated trihydrates, namely hexaaquamanagnese(II) bis(5-aminonaphthalene-1-sulfonate) trihydrate, [Mn(H2O)6](C10H8NO3S)2 x 3 H2O, (II), and hexaaquanickel(II) bis(5-aminonaphthalene-1-sulfonate) trihydrate, [Ni(H2O)6](C10H8NO3S)2 x 3 H2O, (III), in which layers of hexaaquametal(II) complexes alternate with layers of 5-aminonaphthalene-1-sulfonate anions. The cations reside on twofold rotation axes and display regular octahedral coordination. The additional water molecules are found in the inorganic layer between the complex cations, one on a twofold axis and one in a general position. The anions are packed in a herring-bone arrangement with the rings of neighboring rows of anions approximately 43 degrees out of parallel. The NH2 and SO3(-) groups line the surface of the layer, where they participate in numerous hydrogen bonds with the water molecules. Whereas the Mn and Ni salts are orthorhombic, the Co salt, hexaaquacobalt(II) bis(5-aminonaphthalene-1-sulfonate) dihydrate, [Co(H2O)6](C10H8NO3S)2 x 2 H2O, (IV), crystallizes in a triclinic cell of similar dimensions, with the cations situated on centers of inversion. The overall packing is very similar to that of the Mn and Ni salts, with the main differences being the absence of the solvent water molecule on the special position and subtle modifications in the positioning of the anions within their layers. This series of salts is compared with those of the same metals with the 5-aminonaphthalene-2-sulfonate and 4-aminonaphthalene-1-sulfonate isomers, allowing for similarities and differences in packing to be discussed on the basis of the differing substitution of the naphthalene ring and, in some cases, differing degrees of hydration.