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Ahmadian D, Wehbi N, Tseng P, Bixby B, Yip HT. Assessing the interrater and intrarater reliability of subglottic stenosis grading systems. Am J Otolaryngol 2024; 45:104323. [PMID: 38677144 DOI: 10.1016/j.amjoto.2024.104323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Revised: 04/17/2024] [Accepted: 04/17/2024] [Indexed: 04/29/2024]
Abstract
BACKGROUND Subglottic stenosis (SGS) is a condition leading to narrowing of the upper airway which can lead to dyspnea and life-threatening airway obstruction. Although other proposed grading systems exist, the Cotton Myer (CM) and percent stenosis systems are the most widespread in clinical practice. Despite this, the CM system has not yet been validated for visual assessment of SGS. OBJECTIVE To determine the interrater and intrarater reliability of the CM grading system among a cohort of physicians who manage patients with SGS. METHODS An online survey created with videos of tracheoscopies from 20 adult patients with subglotticstenosis (SGS) was sent individually to 9 expert physicians from various medical specialties, all of whom managed patients with SGS. Physicians were asked to view the 20 tracheoscopy videos and assess both the percent stenosis and Cotton Myer (CM) grade of each patient. After a period of 4 weeks, the physicians were sent the same survey of the 20 tracheoscopy videos. The interrater and intrarater reliability was calculated using the intraclass correlation coefficient (ICC), a measurement used to evaluate the reliability (the extent to which a measurement can be replicated) of two or more raters measuring the same subject. RESULTS Overall, CM and percent stenosis systems were found to have an ICC of 0.94 and 0.90 within the domain of interrater reliability, respectively, and ICC of 0.71 and 0.81 within the domain of intrarater reliability, respectively. CONCLUSION Our findings suggest that the CM and percent stenosis grading systems remain a valid clinical tool to measure and communicate the severity of airway obstruction in SGS.
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Affiliation(s)
- David Ahmadian
- University of Arizona, College of Medicine - Tucson, 1501 N Campbell Ave, Tucson, AZ 85724, United States of America.
| | - Nader Wehbi
- University of Arizona, College of Medicine - Phoenix, 475 N 5th St, Phoenix, AZ 85004, United States of America
| | - Phil Tseng
- University of Arizona, College of Medicine - Tucson, 1501 N Campbell Ave, Tucson, AZ 85724, United States of America
| | - Billie Bixby
- University of Arizona, College of Medicine - Tucson, Department of Medicine, 1501 N Campbell Ave, Tucson, AZ 85724, United States of America
| | - Helena T Yip
- University of Arizona, College of Medicine - Tucson, Department of Otolaryngology, 1501 N Campbell Ave, Tucson, AZ 85724, United States of America
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Erlandsson A, Lundquist A, Olofsson K. Mapping quality of life after balloon dilatation in subglottic stenosis using Dyspnea index and Short Form Health Survey-36. Eur Arch Otorhinolaryngol 2024; 281:3701-3706. [PMID: 38705896 PMCID: PMC11211135 DOI: 10.1007/s00405-024-08667-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Accepted: 04/08/2024] [Indexed: 05/07/2024]
Abstract
PURPOSE An accurate diagnosis and proper treatment plan are required to restore an adequate patent airway in fibrotic subglottic stenosis (SGS). Currently, the definitive treatment entails single-stage balloon dilatation with steroid injections. The primary aim was to evaluate successful airway restoration and general quality of life in cases with SGS in northern Sweden using robust patient reported outcomes. METHODS All participants with need of surgical treatment due to SGS that had been referred to the department of otorhinolaryngology, University Hospital of Umeå from September 2020 to August 2023 was included. Exclusion criteria included malignant, extrathoracic or cartilaginous cause, age < 18 years, or incompetent to sign consent documents. We assessed the patient-reported outcome measures pre- as well as 3 months postoperatively. RESULTS Of the 40 cases fulfilling the eligibility criteria's, 33 cases completed the Dyspnea index (DI) and the short form health survey (SF-36) pre- as well as 3 months post-operatively. Receiver operating characteristics showed significant improvement in DI as well as in SF 36 scores post-operatively. CONCLUSIONS Evaluation of balloon dilatation in SGS in this cohort follow-up analysis shows clear improvement in patient quality of life using robust PROM 3 months postoperatively, ensuring the use of a safe and well-tolerated procedure.
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Affiliation(s)
- Anders Erlandsson
- Department of Clinical Sciences, Otorhinolaryngology, Umeå University, Umeå, Sweden.
- Department of Otorhinolaryngology, University Hospital of Umeå, 901 89, Umeå, Sweden.
| | - Anders Lundquist
- Umeå School of Business, Economics, and Statistics, Umeå University, Umeå, Sweden
| | - Katarina Olofsson
- Department of Clinical Sciences, Otorhinolaryngology, Umeå University, Umeå, Sweden
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Stoelben E. [Functional, Radiological and Endoscopic Diagnostic of Tracheal Diseases]. Zentralbl Chir 2024; 149:253-259. [PMID: 38056500 DOI: 10.1055/a-2210-3636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/08/2023]
Abstract
Diseases of the trachea are rare, while other diseases associated with shortness of breath and pulmonary symptoms are common, which is why the necessary diagnosis and therapy are regularly delayed. At the same time, diseases range from simple scarring stenosis to extensive tumour disease. Patients may be otherwise healthy, suffer from autoimmune disease, or have severe general illnesses, as in tracheotomised patients. Therefore, history and clinical examination provide very important clues to a disease of the trachea. Subsequent diagnostics should be ordered in a reasonable manner and lead to the correct diagnosis and subsequent therapy in a timely manner. Functional, radiological and endoscopic examinations, each with a special focus in experienced hands, avoid duplicate examinations or misinterpretations. Patients are grateful because diseases of the trachea - a central airway that cannot be bypassed - are experienced as life-threatening or at least as severely limiting the quality of life.
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Affiliation(s)
- Erich Stoelben
- Thoraxchirurgie, Thoraxklinik Köln, St. Hildegardis Krankenhaus, Köln, Deutschland
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Gottman DC, Corbisiero MF, Sus R, Fink DS. The Impact of Tracheal Stenosis on Distal Airway Pressure with Jet Ventilation. Laryngoscope 2024; 134:2300-2305. [PMID: 37933801 DOI: 10.1002/lary.31150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 10/09/2023] [Accepted: 10/17/2023] [Indexed: 11/08/2023]
Abstract
OBJECTIVE This study investigates the effects of tracheal stenosis on distal airway pressure during low-frequency jet ventilation (LFJV) in tracheal stenosis resection procedures, focusing on variables like stenosis size, depth, scope type, and inlet pressure. METHODS A 3D-printed human airway model was employed, featuring inserted tracheal stenoses of varied sizes and depths. Distal airway pressure was measured with 16 pressure transducers, and data were processed via MATLAB. The study varied stenosis size, depth, scope type, and inlet pressure during five sequential jet bursts under LFJV. RESULTS Using a subglottiscope resulted in significantly reduced distal airway pressure compared to a laryngoscope. Interestingly, neither stenosis size nor depth significantly influenced distal airway pressure. However, increased distance between the scope and stenosis raised normalized pressure. A linear rise in normalized distal airway pressure was noted with increased inlet pressure, regardless of stenosis dimensions. CONCLUSION In this model, scope type and inlet pressure were noted to be significant determinants of distal airway pressure, while stenosis size and depth were not. The distance between the scope and the stenosis did influence distal pressures. These findings may have clinical implications for managing airway pressures in patients undergoing LFJV, potentially reducing the risk of ventilator-induced lung injury. LEVEL OF EVIDENCE NA (Basic Research) Laryngoscope, 134:2300-2305, 2024.
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Affiliation(s)
- Drew C Gottman
- Department of Otolaryngology-Head and Neck Surgery, University of Colorado School of Medicine, Aurora, Colorado, U.S.A
| | - Michaele Francesco Corbisiero
- Department of Otolaryngology-Head and Neck Surgery, University of Colorado School of Medicine, Aurora, Colorado, U.S.A
| | - Ruba Sus
- Department of Bioengineering, University of Colorado Denver, Aurora, Colorado, U.S.A
| | - Daniel S Fink
- Department of Otolaryngology-Head and Neck Surgery, University of Colorado School of Medicine, Aurora, Colorado, U.S.A
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Lu RJ, Hijaz B, Naunheim MR, Stevenson L, Franco RA. The Subglottic Stenosis 6 Questionnaire: A Novel Quality-of-Life Survey Validated to Predict Need for Intervention in Patients With Idiopathic Subglottic Stenosis. Chest 2024; 165:161-171. [PMID: 37544425 DOI: 10.1016/j.chest.2023.07.4217] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 07/25/2023] [Accepted: 07/28/2023] [Indexed: 08/08/2023] Open
Abstract
BACKGROUND Idiopathic subglottic stenosis (iSGS) is a recurrent, chronic disease defined by fibroinflammatory narrowing of the subglottic airway. A key challenge in treatment is monitoring disease progression, which may be debilitating and unpredictable in its timing. RESEARCH QUESTION Can the Subglottic Stenosis 6 (SGS-6) questionnaire be validated as a novel quality-of-life (QOL) instrument to monitor breathing, disease progression, and disease severity proactively in patients with iSGS? STUDY DESIGN AND METHODS Panel data from 51 patients with iSGS were collected from January 2012 through June 2022, representing 1,684 patient encounters including routine office visits and treatment encounters. Subjective QOL scores (including the novel SGS-6 and established RAND-36 and EuroQol Five Dimensions [EQ-5D] Visual Analog Scale) and objective pulmonary function test (PFT) results were collected at each visit. Subjective SGS-6 QOL scores were repeated within 1 week of initial reporting. Panel regression analyses were performed to assess the relationship between SGS-6 scores, PFT results, and a patient's need for intervention. Minimal clinically important differences (MCIDs) for SGS-6 and peak expiratory flow percentage (PEF%) were assessed using receiver operating characteristic (ROC) curve analysis and a patient's need for intervention as the external anchor. RESULTS Each one-point increase in SGS-6 score (of a maximum of 27) was associated with a 3.26% decrease in PEF%, a 1.93-point decrease in RAND-36 Physical Health composite score, a 1.27-point decrease in RAND-36 Mental Health composite score, and a 0.88-point decrease in EQ-5D Visual Analog Scale score. The intracorrelation coefficient for the SGS-6 composite score is 0.838 (95% CI, 0.770-0.888). Compared with patient baselines, SGS-6 scores were 4.66 points greater at the time of intervention with an MCID of 2.25 from a patient's baseline. The area under the ROC curve for SGS-6 and a patient's intervention point was 0.81. INTERPRETATION iSGS disease severity can be modeled using the SGS-6 questionnaire, offering physicians and patients a potentially new method of tracking disease progression and need for intervention remotely.
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Affiliation(s)
| | | | - Matthew R Naunheim
- Harvard Medical School, Boston, MA; Mass Eye and Ear, Boston, MA; Massachusetts General Hospital, Boston, MA
| | | | - Ramon A Franco
- Harvard Medical School, Boston, MA; Mass Eye and Ear, Boston, MA; Massachusetts General Hospital, Boston, MA.
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Ntouniadakis E, Sundh J, Söderqvist J, von Beckerath M. How can we identify subglottic stenosis in patients with suspected obstructive disease? Eur Arch Otorhinolaryngol 2023; 280:4995-5001. [PMID: 37540269 PMCID: PMC10562276 DOI: 10.1007/s00405-023-08141-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 07/17/2023] [Indexed: 08/05/2023]
Abstract
PURPOSE Subglottic stenosis, a rare condition of the upper airway, is frequently misdiagnosed as obstructive lung disease. The aim of this study was to investigate whether subglottic stenosis could be identified and distinguished from asthma and chronic obstructive pulmonary disease (COPD) using spirometry or the dyspnea index (DI). METHODS The study population included 43 patients with asthma, 31 patients with COPD and 50 patients with subglottic stenosis planned to undergo endoscopic intervention. All patients completed the DI and underwent dynamic spirometry registering both inspiratory and expiratory volumes and flows, including the expiratory disproportion index (EDI), the ratio of forced expiratory volume in 1 s to peak expiratory flow. One-way analysis of variance assessed the discrepancy of the variables among the study groups, and receiver operating curve (ROC) analysis determined the measurement with the best discriminatory power providing a cutoff value, maximizing both sensitivity and specificity. RESULTS The only statistically significant variables differing between all three groups were the EDI and the DI. The EDI showed an excellent area under the ROC curve (0.99, p < 0.001) with a cutoff value of 0.39 (98% sensitivity, 96% specificity), followed by DI (0.87, p < 0.001) with a cutoff score of > 25 (83% sensitivity and 78% specificity). CONCLUSION In patients with dyspnea of unknown cause, an increase in EDI should arouse a suspicion of extrathoracic airway obstruction, advocating for further evaluation with laryngotracheoscopy.
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Affiliation(s)
- Eleftherios Ntouniadakis
- Department of Ear Nose and Throat, Faculty of Medicine and Health, Örebro University Hospital, Södra Grev Rosengatan, 701 85, Örebro, Sweden.
| | - Josefin Sundh
- Department of Respiratory Medicine, Faculty of Medicine and Health, Örebro University, 70182, Örebro, Sweden
| | - Jeanette Söderqvist
- Department of Clinical Physiology, Faculty of Medicine and Health, Örebro University, 70182, Örebro, Sweden
| | - Mathias von Beckerath
- Department of Ear Nose and Throat, Faculty of Medicine and Health, Örebro University Hospital, Södra Grev Rosengatan, 701 85, Örebro, Sweden
- Department of Clinical Sciences, Intervention and Technology, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
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Ratwani AP, Chen H, Brown L, Schwartz EA, Patel K, Guttentag A, McLaren TA, Sandler KL, Rickman OB, Shojaee S, Lentz RJ, Maldonado F. Inter-rater reliability of a novel objective endpoint for benign central airway stenosis interventions: Segmentation-based volume rendering of computed tomography scans. PLoS One 2023; 18:e0290393. [PMID: 37878622 PMCID: PMC10599541 DOI: 10.1371/journal.pone.0290393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Accepted: 08/08/2023] [Indexed: 10/27/2023] Open
Abstract
OBJECTIVES To evaluate the reliability of a novel segmentation-based volume rendering approach for quantification of benign central airway obstruction (BCAO). DESIGN A retrospective single-center cohort study. SETTING Data were ascertained using electronic health records at a tertiary academic medical center in the United States. PARTICIPANTS AND INCLUSION Patients with airway stenosis located within the trachea on two-dimensional (2D) computed tomography (CT) imaging and documentation of suspected benign etiology were included. Four readers with varying expertise in quantifying tracheal stenosis severity were selected to manually segment each CT using a volume rendering approach with the available free tools in the medical imaging viewing software OsiriX (Bernex, Switzerland). Three expert thoracic radiologists were recruited to quantify the same CTs using traditional subjective methods on a continuous and categorical scale. OUTCOME MEASURES The interrater reliability for continuous variables was calculated by the intraclass correlation coefficient (ICC) using a two-way mixed model with 95% confidence intervals (CI). RESULTS Thirty-eight patients met the inclusion criteria, and fifty CT scans were selected for measurement. The most common etiology of BCAO was iatrogenic in 22 patients (58%). There was an even distribution of chest and neck CT imaging within our cohort. The average ICC across all four readers for the volume rendering approach was 0.88 (95% CI, 0.84 to 0.93), suggesting good to excellent agreement. The average ICC for thoracic radiologists for subjective methods on the continuous scale was 0.38 (95% CI, 0.20 to 0.55), suggesting poor to fair agreement. The kappa for the categorical approach was 0.26, suggesting a slight to fair agreement amongst the raters. CONCLUSION In this retrospective cohort study, agreement was good to excellent for raters with varying expertise in airway cross-sectional imaging using a novel segmentation-based volume rendering approach to quantify BCAO. This proposed measurement outperformed our expert thoracic radiologists using conventional subjective grading methods.
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Affiliation(s)
- Ankush P. Ratwani
- Department of Medicine, Division of Allergy, Pulmonary and Critical Care, Vanderbilt University Medical Center, Nashville, TN, United States of America
| | - Heidi Chen
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, TN, United States of America
| | - Leah Brown
- Department of Medicine, Division of Allergy, Pulmonary and Critical Care, Vanderbilt University Medical Center, Nashville, TN, United States of America
| | - Evan A. Schwartz
- Department of Medicine, Division of Pulmonary, Allergy and Critical Care Medicine, Duke University School of Medicine, Durham, NC, United States of America
| | - Khushbu Patel
- Department of Medicine, Division of Allergy, Pulmonary and Critical Care, Vanderbilt University Medical Center, Nashville, TN, United States of America
| | - Adam Guttentag
- Department of Radiology and Radiological Science, Vanderbilt University Medical Center, Nashville, TN, United States of America
| | - Thomas A. McLaren
- Department of Radiology and Radiological Science, Vanderbilt University Medical Center, Nashville, TN, United States of America
| | - Kim L. Sandler
- Department of Radiology and Radiological Science, Vanderbilt University Medical Center, Nashville, TN, United States of America
| | - Otis B. Rickman
- Department of Medicine, Division of Allergy, Pulmonary and Critical Care, Vanderbilt University Medical Center, Nashville, TN, United States of America
| | - Samira Shojaee
- Department of Medicine, Division of Allergy, Pulmonary and Critical Care, Vanderbilt University Medical Center, Nashville, TN, United States of America
| | - Robert J. Lentz
- Department of Medicine, Division of Allergy, Pulmonary and Critical Care, Vanderbilt University Medical Center, Nashville, TN, United States of America
| | - Fabien Maldonado
- Department of Medicine, Division of Allergy, Pulmonary and Critical Care, Vanderbilt University Medical Center, Nashville, TN, United States of America
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Ntouniadakis E, Sundh J, Magnuson A, von Beckerath M. Balloon dilatation is superior to CO 2 laser excision in the treatment of subglottic stenosis. Eur Arch Otorhinolaryngol 2023; 280:3303-3311. [PMID: 36964409 PMCID: PMC10038384 DOI: 10.1007/s00405-023-07926-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Accepted: 03/13/2023] [Indexed: 03/26/2023]
Abstract
INTRODUCTION Endoscopic treatment of subglottic stenosis (SGS) is regarded as a safe procedure with rare complications and less morbidity than open surgery yet related with a high risk of recurrence. The abundance of techniques and adjuvant therapies complicates a comparison of the different surgical approaches. The primary aim of this study was to investigate disease recurrence after CO2 laser excisions and balloon dilatation in patients with SGS and to identify potential confounding factors. MATERIALS AND METHODS In a tertiary referral center, two cohorts of previously undiagnosed patients treated for SGS were retrospectively reviewed and followed for 3 years. The CO2 laser cohort (CLC) was recruited between 2006 and 2011, and the balloon dilatation cohort (BDC) between 2014 and 2019. Kaplan‒Meier and multivariable Cox regression analyzed time to repeated surgery and estimated hazard ratios (HRs) for different variables. RESULTS Nineteen patients were included in the CLC, and 31 in the BDC. The 1-year cumulative recurrence risk was 63.2% for the CLC compared with 12.9% for the BDC (HR 33.0, 95% CI 6.57-166, p < 0.001), and the 3-year recurrence risk was 73.7% for the CLC compared with 51.6% for the BDC (HR 8.02, 95% CI 2.39-26.9, p < 0.001). Recurrence was independently associated with overweight (HR 3.45, 95% CI 1.16-10.19, p = 0.025), obesity (HR 7.11, 95% CI 2.19-23.04, p = 0.001), and younger age at diagnosis (HR 8.18, 95% CI 1.43-46.82, p = 0.018). CONCLUSION CO2 laser treatment is associated with an elevated risk for recurrence of SGS compared with balloon dilatation. Other risk factors include overweight, obesity, and a younger age at diagnosis.
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Affiliation(s)
- Eleftherios Ntouniadakis
- Department of Ear Nose and Throat, Faculty of Medicine and Health, Örebro University, 70182, Örebro, Sweden.
- Ear Nose and Throat Department, Örebro University Hospital, Södra Grev Rosengatan, 701 85, Örebro, Sweden.
| | - Josefin Sundh
- Department of Respiratory Medicine, Faculty of Medicine and Health, Örebro University, 70182, Örebro, Sweden
| | - Anders Magnuson
- Clinical Epidemiology and Biostatistics, School of Medical Sciences, Faculty of Medicine and Health, Örebro University, 70182, Örebro, Sweden
| | - Mathias von Beckerath
- Department of Clinical Sciences, Intervention and Technology, Karolinska Institute, Karolinska University Hospital, Stockholm, Sweden
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An Updated Review of Subglottic Stenosis: Etiology, Evaluation, and Management. CURRENT PULMONOLOGY REPORTS 2022; 11:29-38. [PMID: 35261874 PMCID: PMC8892813 DOI: 10.1007/s13665-022-00286-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/13/2022] [Indexed: 12/27/2022]
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Guedes F, Branquinho MV, Sousa AC, Alvites RD, Bugalho A, Maurício AC. Central airway obstruction: is it time to move forward? BMC Pulm Med 2022; 22:68. [PMID: 35183132 PMCID: PMC8858525 DOI: 10.1186/s12890-022-01862-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Accepted: 02/14/2022] [Indexed: 12/18/2022] Open
Abstract
INTRODUCTION Central airway obstruction (CAO) represents a pathological condition that can lead to airflow limitation of the trachea, main stem bronchi, bronchus intermedius or lobar bronchus. MAIN BODY It is a common clinical situation consensually considered under-diagnosed. Management of patients with CAO can be difficult and deciding on the best treatment approach represents a medical challenge. This work intends to review CAO classifications, causes, treatments and its therapeutic limitations, approaching benign and malign presentations. Three illustrative cases are further presented, supporting the clinical problem under review. CONCLUSION Management of CAO still remains a challenge. The available options are not always effective nor free from complications. A new generation of costume-tailored airway stents, associated with stem cell-based therapy, could be an option in specific clinical situations.
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Affiliation(s)
- Fernando Guedes
- Centro de Estudos de Ciência Animal (CECA), Instituto de Ciências, Tecnologias e Agroambiente (ICETA) da Universidade do Porto, Praça Gomes Teixeira, Apartado 55142, 4051-401, Porto, Portugal
- Departamento de Clínicas Veterinárias, Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto (UP), Rua de Jorge Viterbo Ferreira, nº 228, 4050-313, Porto, Portugal
- Pulmonology Department, Bronchology Unit, Centre Hospitalier du Luxembourg, Luxembourg, Luxembourg
| | - Mariana V Branquinho
- Centro de Estudos de Ciência Animal (CECA), Instituto de Ciências, Tecnologias e Agroambiente (ICETA) da Universidade do Porto, Praça Gomes Teixeira, Apartado 55142, 4051-401, Porto, Portugal
- Departamento de Clínicas Veterinárias, Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto (UP), Rua de Jorge Viterbo Ferreira, nº 228, 4050-313, Porto, Portugal
| | - Ana C Sousa
- Centro de Estudos de Ciência Animal (CECA), Instituto de Ciências, Tecnologias e Agroambiente (ICETA) da Universidade do Porto, Praça Gomes Teixeira, Apartado 55142, 4051-401, Porto, Portugal
- Departamento de Clínicas Veterinárias, Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto (UP), Rua de Jorge Viterbo Ferreira, nº 228, 4050-313, Porto, Portugal
| | - Rui D Alvites
- Centro de Estudos de Ciência Animal (CECA), Instituto de Ciências, Tecnologias e Agroambiente (ICETA) da Universidade do Porto, Praça Gomes Teixeira, Apartado 55142, 4051-401, Porto, Portugal
- Departamento de Clínicas Veterinárias, Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto (UP), Rua de Jorge Viterbo Ferreira, nº 228, 4050-313, Porto, Portugal
| | - António Bugalho
- CUF Tejo Hospital e CUF Descobertas Hospital, Lisbon, Portugal
- Centro de Estudos de Doenças Crónicas (CEDOC), NOVA Medical School, Lisbon, Portugal
| | - Ana Colette Maurício
- Centro de Estudos de Ciência Animal (CECA), Instituto de Ciências, Tecnologias e Agroambiente (ICETA) da Universidade do Porto, Praça Gomes Teixeira, Apartado 55142, 4051-401, Porto, Portugal.
- Departamento de Clínicas Veterinárias, Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto (UP), Rua de Jorge Viterbo Ferreira, nº 228, 4050-313, Porto, Portugal.
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Ntouniadakis E, Sundh J, von Beckerath M. Monitoring Adult Subglottic Stenosis With Spirometry and Dyspnea Index: A Novel Approach. Otolaryngol Head Neck Surg 2021; 167:517-523. [PMID: 34813409 PMCID: PMC9442627 DOI: 10.1177/01945998211060817] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
Objective The aim was to examine the correlations among the anatomic Cotton-Myer classification, pulmonary function tests (PFTs), and patient-perceived dyspnea or dysphonia in patients with subglottic stenosis and identify measurements accurately reflecting treatment effects. Study Design Prospective cohort study. Setting Tertiary referral center. Method Fifty-two adults receiving endoscopic treatment for isolated subglottic stenosis were consecutively included. Correlations were calculated among the preoperative Cotton-Myer scale, PFTs, the Dyspnea Index (DI), and the Voice Handicap Index. Receiver operating characteristic curves were determined for PFT, DI, and Voice Handicap Index pre- and postoperative measurements. Results The Cotton-Myer classification correlated weakly with peak expiratory flow (r = −0.35, P = .012), expiratory disproportion index (r = 0.32, P = .022), peak inspiratory flow (r = −0.32, P = .022), and total peak flow (r = −0.36, P = .01). The DI showed an excellent area under the curve (0.99, P < .001), and among PFTs, the expiratory disproportion index demonstrated the best area under the curve (0.89, P < .001), followed by total peak flow (0.88, P < .001), peak expiratory flow (0.87, P < .001), and peak inspiratory flow (0.84, P < .001). Patients treated endoscopically with balloon dilatation showed a 53% decrease in expiratory disproportion index (95% CI, 41%-66%; P < .001) and a 37% improvement in peak expiratory flow (95% CI, 31%-43%; P < .001). Conclusion Expiratory disproportion index or peak expiratory flow combined with DI was a feasible measurement for the monitoring of adult subglottic stenosis. The percentage deterioration of peak expiratory flow and increase in expiratory disproportion index correlated significantly with a proportional percentage increase in DI.
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Affiliation(s)
- Eleftherios Ntouniadakis
- Department of Ear Nose and Throat, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
| | - Josefin Sundh
- Department of Respiratory Medicine, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
| | - Mathias von Beckerath
- Department of Ear Nose and Throat, Faculty of Medicine and Health, Örebro University, Örebro, Sweden.,Department of Clinical Sciences, Intervention and Technology, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
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Bhatt NK, Huang VP, Bertelsen C, Gao WZ, Reder LS, Johns MM, O'Dell K. Pulmonary Function Tests May Better Predict Dyspnea-Severity in Patients with Subglottic Stenosis Compared to Clinician-Reported Stenosis. Ann Otol Rhinol Laryngol 2021; 131:791-796. [PMID: 34496642 DOI: 10.1177/00034894211045266] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
OBJECTIVE Patients with subglottic stenosis (SGS) present with varied degree of breathing complaints. The dyspnea index (DI) is a 10-question patient-reported outcome measure designed to measure the severity of upper airway obstruction. We set out to determine whether pulmonary function tests or clinician-reported degree of stenosis best predicted DI scores. METHODS Thirty patients with SGS were retrospectively reviewed over a 6-year period. One visit from each patient was included. Data including peak expiratory flow rate (PEFR), body-mass index (BMI), clinician-reported degree of stenosis, and DI scores were reviewed. Multiple linear regression was performed to determine how degree of stenosis and PEFR % predicted the variation in DI score. RESULTS PEFR % better predicted DI scores compared to degree of stenosis (partial correlation -0.32 vs 0.17). After stepwise elimination, PEFR % remained in the regression and was significantly associated with DI scores (F[1, 29] = 9.38, P = .005). BMI did not demonstrate a linear relationship with DI scores and was not included in the regression (r = -.02). The PEFR % unstandardized coefficient was -0.25 (95% CI: -0.42 to -0.08, P = .005). The model predicts that a 4% increase in the PEFR % results in a 1-point decrease in the DI score (95% CI: -1.68 to -0.32). CONCLUSION This study suggests that pulmonary function tests may be a better in-office measure to substantiate the severity of symptoms in patients with SGS.
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Affiliation(s)
- Neel K Bhatt
- Department of Otolaryngology-Head and Neck Surgery, School of Medicine, University of Washington, St Louis, MO, USA
| | - Valerie P Huang
- Tina and Rick Caruso Department of Otolaryngology-Head and Neck Surgery, University of Southern California, Los Angeles, CA, USA
| | | | - William Z Gao
- Department of Otolaryngology-Head and Neck Surgery, Georgetown University Medical Center, Washington, DC, USA
| | - Lindsay S Reder
- Southern California Permanente Medical Group, Kaiser Permanente Baldwin Park, Baldwin Park, CA, USA
| | - Michael M Johns
- Tina and Rick Caruso Department of Otolaryngology-Head and Neck Surgery, University of Southern California, Los Angeles, CA, USA
| | - Karla O'Dell
- Tina and Rick Caruso Department of Otolaryngology-Head and Neck Surgery, University of Southern California, Los Angeles, CA, USA
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Bourdillon AT, Hajek MA, Wride M, Lee M, Lerner M, Kohli N. Correlations of Radiographic and Endoscopic Observations in Subglottic Stenosis. Ann Otol Rhinol Laryngol 2021; 131:724-729. [PMID: 34459264 DOI: 10.1177/00034894211042768] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE(S) Subglottic stenosis (SGS) represents a constellation of diverse pathologic processes that ultimately lead to narrowing of the subglottic region and can produce significant morbidity. Existing endoscopic and radiographic assessments may not be consistent in practice. METHODS Severity of stenosis was evaluated and reported using the Cotton-Myer classification system from 33 endoscopic procedures from 32 unique subjects. Radiographic imaging within the preceding 3 month period was subsequently reviewed and narrowing was measured by a blinded radiologist. Degree of stenosis was reported as a percentage in 30 out of 33 endoscopic evaluations and subsequently compared to radiographically determined percentage of stenosis. Statistical analyzes were conducted to evaluate concordance between endoscopic and radiographic assessments. RESULTS About 45.5% (15/33) of the evaluations were in agreement using Cotton-Myer scoring, while 27.3% (9/33) were discrepant by 1 grade and 27.3% (9/33) by 2 grades. Correlation of degree of stenosis as a percentage using Spearman (coefficient: 0.233, P-value: .214) and Pearson (coefficient: 0.138, P-value: .466) methods demonstrated very weak relationships. Radiographic scoring did not predict endoscopic classification to a significant degree using mixed effects regression. CONCLUSIONS Radiographic and endoscopic grading of subglottic stenosis may not be reliably concordant in practice.
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Affiliation(s)
| | - Michael A Hajek
- Division of Otolaryngology, Department of Surgery, Yale School of Medicine, Yale University, New Haven, CT, USA
| | - Mitchel Wride
- Yale School of Medicine, Yale University, New Haven, CT, USA
| | - Mike Lee
- Department of Radiology and Biomedical Imaging Diagnostic Radiology, Yale School of Medicine, Yale University, New Haven, CT, USA
| | - Michael Lerner
- Division of Otolaryngology, Department of Surgery, Yale School of Medicine, Yale University, New Haven, CT, USA
| | - Nikita Kohli
- Division of Otolaryngology, Department of Surgery, Yale School of Medicine, Yale University, New Haven, CT, USA
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Filauro M, Vallin A, Marcenaro E, Missale F, Fragale M, Mora F, Marrosu V, Sampieri C, Carta F, Puxeddu R, Peretti G. Quality of life after transoral CO 2 laser posterior cordotomy with or without partial arytenoidectomy for bilateral adductor vocal cord paralysis. Eur Arch Otorhinolaryngol 2021; 278:4391-4401. [PMID: 34274996 PMCID: PMC8486712 DOI: 10.1007/s00405-021-06971-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Accepted: 06/27/2021] [Indexed: 11/24/2022]
Abstract
Objectives Bilateral adductor vocal cord paralysis (BAVCP) is a rare and challenging condition whose main consequence is reduction of airway patency at the glottic level, often causing respiratory distress, while vocal function tends to remain almost normal. We investigated the effect of transoral glottal widening on quality of life and decannulation rates in patients affected by BAVCP. Methods We retrospectively evaluated patients affected by BAVCP and treated by transoral CO2 posterior cordotomy with or without medial partial arytenoidectomy (PC ± MPA) at two referral centers. The primary outcome was change in quality of life, evaluated pre- and post-operatively by the ADVS, VHI-30, and EAT-10 questionnaires. Secondary outcomes were the need for retreatments and, for patients with tracheotomy, the time to decannulation. Results Thirty-three patients met selection criteria. The etiology was post-surgical in 27 cases (81.8%), idiopathic in 4 (12.1%), a trauma-related in 1 (6.0%), and to other causes in 1 (3.0%). In 22 cases (66.7%), PC was combined with MPA. A significant improvement in responses for the ADVS (p < .0001) and EAT-10 (p < .0001) was observed, whereas the VHI-30 score did not change significantly post-operatively. All nine patients with a tracheostomy were successfully decannulated within 18 months after the surgical procedure. Conclusions For patients affected by BAVCP, PC ± MPA by transoral CO2 laser microsurgery is a safe, customizable and minimally invasive treatment that can guarantee an affordable balance between quality of life in terms of phonation and swallowing and acceptable airway patency.
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Affiliation(s)
- Marta Filauro
- Unit of Otorhinolaryngology-Head and Neck Surgery, IRCCS Ospedale Policlinico San Martino, Largo Rosanna Benzi, 10, 16132, Genova, Italy.,Department of Surgical Sciences and Integrated Diagnostics (DISC), University of Genova, Genova, Italy.,Department of Experimental Medicine (DIMES), University of Genova, Genova, Italy
| | - Alberto Vallin
- Unit of Otorhinolaryngology-Head and Neck Surgery, IRCCS Ospedale Policlinico San Martino, Largo Rosanna Benzi, 10, 16132, Genova, Italy.,Department of Surgical Sciences and Integrated Diagnostics (DISC), University of Genova, Genova, Italy
| | - Elisa Marcenaro
- Department of Surgical Sciences and Integrated Diagnostics (DISC), University of Genova, Genova, Italy
| | - Francesco Missale
- Unit of Otorhinolaryngology-Head and Neck Surgery, IRCCS Ospedale Policlinico San Martino, Largo Rosanna Benzi, 10, 16132, Genova, Italy. .,Department of Molecular and Translational Medicine, University of Brescia, 25121, Brescia, Italy.
| | - Marco Fragale
- Unit of Otorhinolaryngology-Head and Neck Surgery, IRCCS Ospedale Policlinico San Martino, Largo Rosanna Benzi, 10, 16132, Genova, Italy.,Department of Surgical Sciences and Integrated Diagnostics (DISC), University of Genova, Genova, Italy
| | - Francesco Mora
- Unit of Otorhinolaryngology-Head and Neck Surgery, IRCCS Ospedale Policlinico San Martino, Largo Rosanna Benzi, 10, 16132, Genova, Italy.,Department of Surgical Sciences and Integrated Diagnostics (DISC), University of Genova, Genova, Italy
| | - Valeria Marrosu
- Department of Otorhinolaryngology-Head and Neck Surgery, University of Cagliari, 09124, Cagliari, Italy
| | - Claudio Sampieri
- Unit of Otorhinolaryngology-Head and Neck Surgery, IRCCS Ospedale Policlinico San Martino, Largo Rosanna Benzi, 10, 16132, Genova, Italy.,Department of Surgical Sciences and Integrated Diagnostics (DISC), University of Genova, Genova, Italy
| | - Filippo Carta
- Department of Otorhinolaryngology-Head and Neck Surgery, University of Cagliari, 09124, Cagliari, Italy
| | - Roberto Puxeddu
- Department of Otorhinolaryngology-Head and Neck Surgery, University of Cagliari, 09124, Cagliari, Italy
| | - Giorgio Peretti
- Unit of Otorhinolaryngology-Head and Neck Surgery, IRCCS Ospedale Policlinico San Martino, Largo Rosanna Benzi, 10, 16132, Genova, Italy.,Department of Surgical Sciences and Integrated Diagnostics (DISC), University of Genova, Genova, Italy
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