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Callander JK, Kandahari N, Strohl MP, Cheung SW, Chang JL. Laryngeal Hyposensitivity in Obstructive Sleep Apnea. Laryngoscope 2024; 134:3856-3861. [PMID: 38554047 DOI: 10.1002/lary.31415] [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: 12/21/2023] [Revised: 02/06/2024] [Accepted: 03/08/2024] [Indexed: 04/01/2024]
Abstract
INTRODUCTION Impaired laryngopharyngeal sensation has been implicated in obstructive sleep apnea (OSA) and may play an important pathophysiological role. We evaluated sensory function in OSA by examining the laryngeal adductor reflex (LAR) response rate and temporal profile to tactile stimulation. METHODS Laryngeal sensation testing was performed in awake adults with and without diagnosed OSA by stimulating the medial aryepiglottic fold or arytenoid using 30-mm 5-0 and 4-0 nylon Cheung-Bearelly monofilaments. Video analysis by two independent reviewers evaluated for the presence of the LAR in response to satisfactory stimuli and LAR latency to vocal fold adduction. RESULTS Twenty-six OSA and 12 control subjects were tested with 270 satisfactory stimuli. The mean full LAR response rate to 4-0 stimulation was 38.3% in OSA vs 86.9% in control subjects (p <0.001) and to 5-0 stimulation was 27% in OSA vs 63.9% in control subjects (p <0.001). The mean LAR latency to vocal fold closure in OSA was 123.7 ms (SD 35.8) vs 156.4 ms (SD 44.3) in control (p = 0.04) subjects. OSA LAR latency was positively correlated with the apnea-hypopnea index (r = 0.30; p = 0.008). CONCLUSION The OSA group exhibited reduced LAR response rates and shortened LAR latency, where latency was correlated with disease severity. Laryngeal hyposensitivity was affirmed and changes to LAR sensorimotor temporal dynamics were revealed. These pathophysiological alterations to the LAR may be accounted for by decreased somatosensory receptor sensitivity, increased sympathetic tone, and reorganized brain stem function in OSA. LEVEL OF EVIDENCE 3 Laryngoscope, 134:3856-3861, 2024.
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Affiliation(s)
- Jacquelyn K Callander
- Department of Otolaryngology-Head and Neck Surgery, University of California, San Francisco, San Francisco, California, U.S.A
| | - Nazineen Kandahari
- Department of Otolaryngology-Head and Neck Surgery, University of California, San Francisco, San Francisco, California, U.S.A
| | - Madeleine P Strohl
- Department of Otolaryngology Head and Neck Surgery and Communicative Disorders, University of Louisville, Louisville, Kentucky, U.S.A
| | - Steven W Cheung
- Department of Otolaryngology-Head and Neck Surgery, University of California, San Francisco, San Francisco, California, U.S.A
- Surgical Services, San Francisco Veterans Affairs Health Care System, San Francisco, California, U.S.A
| | - Jolie L Chang
- Department of Otolaryngology-Head and Neck Surgery, University of California, San Francisco, San Francisco, California, U.S.A
- Surgical Services, San Francisco Veterans Affairs Health Care System, San Francisco, California, U.S.A
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Sundar KM, Stark AC, Dicpinigaitis P. Chronic Cough and Obstructive Sleep Apnea. Sleep Med Clin 2024; 19:239-251. [PMID: 38692749 DOI: 10.1016/j.jsmc.2024.02.004] [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] [Indexed: 05/03/2024]
Abstract
Chronic cough, defined as a cough lasting more than 8 weeks, is a common medical condition occurring in 5% to 10% of the population. Its overlap with another highly prevalent disorder, obstructive sleep apnea (OSA), is therefore not surprising. The relationship between chronic cough and OSA extends beyond this overlap with higher prevalence of OSA in patients with chronic cough than in the general population. The use of continuous positive airway pressure can result in improvement in chronic cough although further studies are needed to understand which patients will experience benefit in their cough from the treatment of comorbid OSA.
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Affiliation(s)
- Krishna M Sundar
- Division of Pulmonary & Critical Care Medicine, 30 N, Mario Capecchi Drive, 2nd floor North, University of Utah, Salt Lake City, UT 84112, USA.
| | - Amanda Carole Stark
- Voice Disorders Center, University of Utah, 729 Arapeen Drive, Salt Lake City, UT 84106, USA
| | - Peter Dicpinigaitis
- Department of Medicine, Albert Einstein College of Medicine and Montefiore Medical Center, 1825 Eastchester Road, Bronx, NY 10461, USA
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Wang Z, Li S, Zuo C, Qin J, Wu D. Correlation Between Rapid Eye Movement Sleep Duration and Laryngopharyngeal Reflux in Patients with Obstructive Sleep Apnea. EAR, NOSE & THROAT JOURNAL 2023:1455613231214653. [PMID: 37997618 DOI: 10.1177/01455613231214653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2023] Open
Abstract
Objectives: The aim of this study was to investigate the correlation between rapid eye movement (REM) sleep duration and laryngopharyngeal reflux (LPR) in patients with obstructive sleep apnea (OSA). Methods: In all, 99 patients with OSA were enrolled in this study, and the correlation between REM sleep duration and the severity of LPR was analyzed after the polysomnography (PSG) and reflux symptom index (RSI) scores were completed. Subsequently, a multiple linear regression analysis was performed to further clarify the factors affecting LPR. Results: Partial correlation analysis showed that the REM sleep duration was positively correlated with the RSI scores (r = 0.236, P = .022) after controlling for apnea-hypopnea index (AHI), body mass index (BMI), lowest oxygen saturation (LSO2), age, and sex. The multiple linear regression analysis indicated that only REM sleep duration was a factor influencing LPR (t = 2.330, P = .022). Conclusions: Our study found a correlation between REM sleep duration and LPR in OSA patients. The shorter the REM sleep duration, the less severe the LPR symptoms.
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Affiliation(s)
- Zhe Wang
- Postgraduate Training Base of Jinzhou Medical University in the General Hospital of Northern Theater Command, Jinzhou, China
- Department of Otolaryngology, General Hospital of Northern Theater Command, Shenyang, China
| | - Shuhua Li
- Department of Otolaryngology, General Hospital of Northern Theater Command, Shenyang, China
| | - Chengcheng Zuo
- Department of Otolaryngology, General Hospital of Northern Theater Command, Shenyang, China
- Postgraduate Training Base of Dalian Medical University in the General Hospital of Northern Theater Command, Dalian, China
| | - Jie Qin
- Department of Otolaryngology, General Hospital of Northern Theater Command, Shenyang, China
| | - Dahai Wu
- Department of Otolaryngology, General Hospital of Northern Theater Command, Shenyang, China
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Hamdan AL, Lechien JR, Ghanem A, Abou Raji Feghali P, Hosri J, Alam E. Self-reported symptoms of laryngopharyngeal reflux using the reflux symptom score in patients with obstructive sleep apnea syndrome. Acta Otolaryngol 2023; 143:801-805. [PMID: 37737706 DOI: 10.1080/00016489.2023.2258160] [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: 07/20/2023] [Accepted: 09/03/2023] [Indexed: 09/23/2023]
Abstract
BACKGROUND Obstructive sleep apnea (OSA) is associated with many chronic diseases among which is laryngopharyngeal reflux disease (LPRD). OBJECTIVE To investigate the prevalence of laryngopharyngeal reflux (LPR)-related symptoms in patients with OSA using the Reflux Symptoms Score (RSS) and Reflux Symptom Index (RSI). METHODS The medical records and video-recordings of patients with OSA who presented to a tertiary referral center were reviewed. The diagnosis of OSA was made using the STOP-BANG questionnaire and/or polysomnography. The prevalence of LPR-related symptoms was assessed using both the RSS and RSI questionnaires. RESULTS Thirty-nine patients were included in this study. Twenty-seven patients (69.2%) had a positive RSS in comparison to only 7 (17.9%) using the RSI (p = .052). Subgroup analysis of those who had polysomnography (n = 24) showed that 18 patients (75%) had a positive RSS in comparison to only 5 patients (20.8%) using the RSI. Patients in the high-risk category for OSA were also found to have a higher prevalence of LPR-related symptoms using both the RSS and RSI questionnaires in comparison to those in the lower risk categories. CONCLUSION The results of this investigation indicate that the prevalence of LPR-related symptoms is higher using the RSS in comparison to the RSI.
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Affiliation(s)
- Abdul-Latif Hamdan
- Department of Otolaryngology and Head & Neck Surgery, American University of Beirut-Medical Center, Beirut, Lebanon
| | - Jerome R Lechien
- Laryngopharyngeal Reflux Study Group of Young-Otolaryngologists of the International Federations of Oto-rhino-laryngological Societies (YO-IFOS), Department of Otolaryngology-Head and Neck Surgery, Foch Hospital, School of Medicine, University Paris Saclay, Paris, France
| | - Anthony Ghanem
- Department of Otolaryngology and Head & Neck Surgery, American University of Beirut-Medical Center, Beirut, Lebanon
| | - Patrick Abou Raji Feghali
- Department of Otolaryngology and Head & Neck Surgery, American University of Beirut-Medical Center, Beirut, Lebanon
| | - Jad Hosri
- Department of Otolaryngology and Head & Neck Surgery, American University of Beirut-Medical Center, Beirut, Lebanon
| | - Elie Alam
- Department of Otolaryngology and Head & Neck Surgery, American University of Beirut-Medical Center, Beirut, Lebanon
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Horner RL. Targets for obstructive sleep apnea pharmacotherapy: principles, approaches, and emerging strategies. Expert Opin Ther Targets 2023; 27:609-626. [PMID: 37494064 DOI: 10.1080/14728222.2023.2240018] [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: 05/16/2023] [Accepted: 07/19/2023] [Indexed: 07/27/2023]
Abstract
INTRODUCTION Obstructive sleep apnea (OSA) is a common and serious breathing disorder. Several pathophysiological factors predispose individuals to OSA. These factors are quantifiable, and modifiable pharmacologically. AREAS COVERED Four key pharmacotherapeutic targets are identified and mapped to the major determinants of OSA pathophysiology. PubMed and Clinicaltrials.gov were searched through April 2023. EXPERT OPINION Target #1: Pharyngeal Motor Effectors. Increasing pharyngeal muscle activity and responsivity with noradrenergic-antimuscarinic combination is central to recent breakthrough OSA pharmacotherapy. Assumptions, knowledge gaps, future directions, and other targets are identified. #2: Upper Airway Sensory Afferents. There is translational potential of sensitizing and amplifying reflex pharyngeal dilator muscle responses to negative airway pressure via intranasal delivery of new potassium channel blockers. Rationales, advantages, findings, and potential strategies to enhance effectiveness are identified. #3: Chemosensory Afferents and Ventilatory Control. Strategies to manipulate ventilatory control system sensitivity by carbonic anhydrase inhibitors are supported in theory and initial studies. Intranasal delivery of agents to stimulate central respiratory activity are also introduced. #4: Sleep-Wake Mechanisms. Arousability is the fourth therapeutic target rationalized. Evolving automated tools to measure key pathophysiological factors predisposing to OSA will accelerate pharmacotherapy. Although not currently ready for general clinical settings, the identified targets are of future promise.
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Affiliation(s)
- Richard L Horner
- Departments of Physiology and Medicine, University of Toronto, Toronto, ON, Canada
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Lutsey PL, Zineldin I, Misialek JR, Full KM, Lakshminarayan K, Ishigami J, Cowan LT, Matsushita K, Demmer RT. OSA and Subsequent Risk of Hospitalization With Pneumonia, Respiratory Infection, and Total Infection: The Atherosclerosis Risk in Communities Study. Chest 2023; 163:942-952. [PMID: 36442663 PMCID: PMC10268811 DOI: 10.1016/j.chest.2022.11.028] [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: 06/11/2022] [Revised: 10/07/2022] [Accepted: 11/22/2022] [Indexed: 11/27/2022] Open
Abstract
BACKGROUND OSA has been linked to microaspiration, systemic inflammation, and suboptimal immune function. RESEARCH QUESTION Is OSA prospectively associated with risk of hospitalization for pneumonia, respiratory, and total infections? STUDY DESIGN AND METHODS Prospective cohort. Participants in the Atherosclerosis Risk in Communities (ARIC) study (N = 1,586) underwent polysomnography in 1996-1998 and were followed up through 2018 for infection-related hospitalizations. The apnea-hypopnea index (AHI; events/h) was used to categorize participants as having severe OSA (≥ 30), moderate OSA (15-29), mild OSA (5-14), or a normal breathing pattern (< 5). Cox regression was used to calculate hazard ratios (HRs) and 95% CIs. RESULTS ARIC participants were on average 62.7 (SD = 5.5) years of age, and 52.8% were female. Severe OSA was present in 6.0%, moderate OSA in 12.7%, mild OSA in 30.0%, and normal breathing in 51.3%. A total of 253 hospitalizations with pneumonia occurred over a median 20.4 (max, 22.9) years' follow-up. Participants with severe OSA were at 1.87 times (95% CI, 1.19-2.95) higher risk of hospitalization with pneumonia compared with those with a normal breathing pattern after adjustment for demographics and lifestyle behaviors. Results were attenuated modestly after adjustment for BMI (1.62 [0.99-2.63]), and prevalent asthma and COPD (1.62 [0.99-2.63]). A similar pattern existed for hospitalization with respiratory infection and composite infection (demographic and behavior-adjusted HRs: 1.47 [0.96-2.25] and 1.48 [1.07-2.04], respectively). INTERPRETATION Severe OSA was associated with increased risk of hospitalizations with pneumonia in this community-based cohort. OSA patients may benefit from more aggressive efforts to prevent pneumonia and other infectious conditions.
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Affiliation(s)
- Pamela L Lutsey
- Division of Epidemiology & Community Health, School of Public Health, University of Minnesota, Minneapolis, MN.
| | - Islam Zineldin
- M Health Fairview, University of Minnesota, Minneapolis, MN
| | - Jeffrey R Misialek
- Division of Epidemiology & Community Health, School of Public Health, University of Minnesota, Minneapolis, MN
| | - Kelsie M Full
- Division of Epidemiology & Community Health, School of Public Health, University of Minnesota, Minneapolis, MN; Division of Epidemiology, Vanderbilt University Medical Center, Nashville, TN
| | - Kamakshi Lakshminarayan
- Division of Epidemiology & Community Health, School of Public Health, University of Minnesota, Minneapolis, MN
| | - Junichi Ishigami
- Division of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD
| | - Logan T Cowan
- Department of Biostatistics, Epidemiology, and Environmental Health Sciences, Georgia Southern University, Statesboro, GA
| | - Kunihiro Matsushita
- Division of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD
| | - Ryan T Demmer
- Division of Epidemiology & Community Health, School of Public Health, University of Minnesota, Minneapolis, MN
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Matsumoto-Sasaki M, Suzuki M, Kimura H, Shimizu K, Makita H, Nishimura M, Konno S. Association of longitudinal changes in quality of life with comorbidities and exacerbations in patients with severe asthma. Allergol Int 2022; 71:481-489. [PMID: 35718710 DOI: 10.1016/j.alit.2022.05.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 04/15/2022] [Accepted: 05/16/2022] [Indexed: 11/01/2022] Open
Abstract
BACKGROUND Quality of life (QoL) assessment is important in the management of severe asthma, and comorbidities and/or exacerbations may affect longitudinal QoL. However, there are few reports on the longitudinal assessment of QoL in patients with asthma over multiple years and its related factors. This study aimed to clarify the relationship of longitudinal changes in QoL with comorbidities and/or exacerbations during a prolonged observation period in patients with severe asthma. METHODS A total of 105 subjects who participated in the Hokkaido-based Investigative Cohort Analysis for Refractory Asthma (Hi-CARAT) with a six-year follow-up were analyzed. QoL was assessed annually, using the Standardized Asthma Quality of Life Questionnaire, and the subjects were divided into three groups: (1) persistently good QoL, (2) persistently poor QoL, and (3) fluctuating QoL. Assessed comorbidities comprised depression, gastroesophageal reflux disease, and excessive daytime sleepiness (EDS), a key symptom of obstructive sleep apnea. RESULTS Of 105 subjects with severe asthma, 53 (50%) were classified in the persistently good QoL group, 10 (10%) in the persistently poor QoL group, and 42 (40%) in the fluctuating QoL group. The persistently poor QoL group was associated with shorter time to hospitalization due to exacerbation and the presence of multiple comorbidities. In addition, the presence of EDS was an independent contributor to the fluctuating QoL group compared to the persistently good QoL group. CONCLUSIONS The presence of multiple comorbidities and hospitalization due to exacerbation contribute to longitudinal changes in QoL in patients with severe asthma.
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Affiliation(s)
- Machiko Matsumoto-Sasaki
- Department of Respiratory Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Masaru Suzuki
- Department of Respiratory Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan.
| | - Hirokazu Kimura
- Department of Respiratory Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Kaoruko Shimizu
- Department of Respiratory Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Hironi Makita
- Department of Respiratory Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Masaharu Nishimura
- Department of Respiratory Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Satoshi Konno
- Department of Respiratory Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
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Tamin S, Siregar D, Hutauruk SM, Restuti RD, Rachmawati EZK, Bardosono S. Association between laryngopharyngeal reflux and obstructive sleep apnea in adults. PeerJ 2022; 10:e13303. [PMID: 35497179 PMCID: PMC9053297 DOI: 10.7717/peerj.13303] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Accepted: 03/29/2022] [Indexed: 01/13/2023] Open
Abstract
Background Obstructive sleep apnea syndrome (OSAS) and laryngopharyngeal reflux (LPR) have been found to coexist in the population. OSAS and LPR also share obesity as an important risk factor. However, the relationship between LPR and OSAS remains unclear. This study aimed to correlate LPR as measured by the Reflux Symptom Index (RSI) and the Reflux Finding Score (RFS) with OSAS. Methods This cross-sectional study included sixty-four subjects who underwent anamnesis to complete the RSI and the Epworth Sleeping Scale (ESS). The subjects were then divided into the OSAS and non-OSAS groups based on the Apnea-Hypopnea Index (AHI) obtained through a polysomnography examination. Both groups underwent a flexible fiberoptic nasopharyngolaryngoscopy examination to determine the RFS. LPR was identified based on the RSI and RFS. Results The mean BMI of the OSAS group significantly was higher than the non-OSAS group (p < 0.05). Most of the subjects in the OSAS group exhibited mild-moderate OSAS (AHI 10-29), and severe OSAS occurred in only seven subjects. The mean RSI and RFS values in the OSAS group did not differ significantly from the non-OSAS group (p = 0.34 and p = 0.36, respectively). The proportion of LPR between the mild-moderate OSAS group, the severe OSAS group, and the non-OSAS group did not differ significantly (p = 1.00). RSI and RFS did not significantly correlate with AHI. Based on RSI, the proportion of LPR between the ESS (+) and ESS (-) groups did not significantly differ (adjusted p = 0.062). The proportion of LPR based on RFS was almost equal between the ESS (+) and ESS (-) groups (p = 0.817). Conclusions The BMI of the OSAS group was significantly higher than the non-OSAS group. There was no significant difference in RSI and RFS between the OSAS and non-OSAS groups. There was no significant correlation between RSI and AHI, or between RFS and AHI. There was no significant difference in the proportion of RSI between the ESS (+) and the ESS (-) groups.
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Affiliation(s)
- Susyana Tamin
- Department of Otorhinolaryngology-Head and Neck Surgery, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
| | - Dumasari Siregar
- Department of Otorhinolaryngology-Head and Neck Surgery, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
| | - Syahrial Marsinta Hutauruk
- Department of Otorhinolaryngology-Head and Neck Surgery, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
| | - Ratna Dwi Restuti
- Department of Otorhinolaryngology-Head and Neck Surgery, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
| | | | - Saptawati Bardosono
- Department of Nutrition Science, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
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Tang X, Tang Q, Li S, Yang X, Zhang Y, Zeng S, Huang P, Li M. Changes in laryngopharyngeal reflux after uvulopalatopharyngoplasty for obstructive sleep apnea: An observational study. Laryngoscope Investig Otolaryngol 2022; 7:266-273. [PMID: 35155807 PMCID: PMC8823242 DOI: 10.1002/lio2.718] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 12/09/2021] [Accepted: 12/11/2021] [Indexed: 01/06/2023] Open
Abstract
PURPOSE To estimate laryngopharyngeal reflux (LPR) changes after uvulopalatopharyngoplasty (UPPP) for obstructive sleep apnea (OSA) using the reflux symptom index (RSI) and reflux finding score (RFS) questionnaires. METHODS A total of 91 participants were recruited and divided into three groups: control (n = 27), OSA mild to moderate (n = 29), and OSA severe (n = 35) groups according to polysomnography. All participants completed the preoperative RSI, and underwent blinded evaluation on videolaryngoscopy using the RFS questionnaire. Thirty-four OSA patients who underwent UPPP surgery completed postoperative polysomnography and questionnaires again after a 6-month follow-up. RESULTS The RSI score and RFS were higher in patients with OSA than in those without OSA. Patients with severe OSA also had a higher RSI score and RFS than those with mild to moderate OSA. Apnea and hypopnea index degree and percentage of recording time for <90% oxygen saturation showed positive correlation with LPR symptoms. But the lowest blood oxygen saturation during the recording time was negatively correlated with LPR symptoms. The mean RSI score and RFS before UPPP surgery were 15.88 ± 4.85 and 13.18 ± 4.80, after surgery decreasing to 9.53 ± 4.16 and 8.65 ± 4.87, respectively (P <.05). In 25 patients where surgery was successful, RSI scores, RFSs and individual RSI variables decreased after surgery. CONCLUSIONS LPR symptoms are common among OSA patients, and the coexistence of OSA and LPR cannot be ignored. Successful UPPP surgery potentially reduces LPR symptoms and improves laryngoscopic signs by alleviating sleep respiratory disorders. Level of Evidence: 3.
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Affiliation(s)
- Xiaojun Tang
- Department of Otolaryngology Head and Neck Surgery, The Second Xiangya HospitalCentral South UniversityChangshaHunanChina
| | - Qinglai Tang
- Department of Otolaryngology Head and Neck Surgery, The Second Xiangya HospitalCentral South UniversityChangshaHunanChina
| | - Shisheng Li
- Department of Otolaryngology Head and Neck Surgery, The Second Xiangya HospitalCentral South UniversityChangshaHunanChina
| | - Xinming Yang
- Department of Otolaryngology Head and Neck Surgery, The Second Xiangya HospitalCentral South UniversityChangshaHunanChina
| | - Ying Zhang
- Department of Otolaryngology Head and Neck Surgery, The Second Xiangya HospitalCentral South UniversityChangshaHunanChina
| | - Shiying Zeng
- Department of Otolaryngology Head and Neck Surgery, The Second Xiangya HospitalCentral South UniversityChangshaHunanChina
| | - Peiying Huang
- Department of Otolaryngology Head and Neck Surgery, The Second Xiangya HospitalCentral South UniversityChangshaHunanChina
| | - Mengmeng Li
- Department of Otolaryngology Head and Neck Surgery, The Second Xiangya HospitalCentral South UniversityChangshaHunanChina
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Wallace ES, Carberry JC, Toson B, Eckert DJ. A Systematic Review and Meta-Analysis of Upper Airway Sensation in Obstructive Sleep Apnea – Implications for Pathogenesis, Treatment and Future Research Directions. Sleep Med Rev 2022; 62:101589. [DOI: 10.1016/j.smrv.2022.101589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Revised: 01/04/2022] [Accepted: 01/05/2022] [Indexed: 10/19/2022]
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He J, Wang C, Li W. Laryngopharyngeal Reflux in Obstructive Sleep Apnea-Hypopnea Syndrome: An Updated Meta-Analysis. Nat Sci Sleep 2022; 14:2189-2201. [PMID: 36545474 PMCID: PMC9762266 DOI: 10.2147/nss.s390272] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Accepted: 12/04/2022] [Indexed: 12/15/2022] Open
Abstract
Laryngopharyngeal reflux (LPR) is a common disorder in patients with obstructive sleep apnea-hypopnea syndrome (OSAHS). This meta-analysis was carried out to evaluate the LPR prevalence in individuals with OSAHS and to analyze the correlation of LPR positivity with the clinical features of patients with OSAHS. A detailed review of the English and Chinese literature on the occurrence of LPR in patients with OSAHS was performed by employing online search tools such as PubMed, EMBASE, Web of Science, VIP, CNKI, WanFang, etc. Two researchers analyzed the studies for quality according to the STROBE standard checklist. The acquired data were analyzed using Stata 11.0 and R 3.6.1 software. The effect size was estimated and calculated using weighted mean difference (WMD) and correlation coefficients. Moreover, a combined analysis was performed by employing either a random- or fixed-effects model. Ultimately, 27 studies met our inclusion criteria. Our study revealed that the LPR prevalence in OSAHS patients was 49%. We carried out subgroup analyses as per OSAHS severity, ethnicity, and body mass index (BMI). The results suggested that the probability of LPR in European and American patients with OSAHS was higher, and the prevalence of LPR was higher in obese individuals and patients with severe OSAHS. Moreover, apnea-hypopnea index (AHI) and BMI were higher in LPR-positive OSAHS patients than in LPR-negative OSAHS patients, but no significant variation in age was observed in the two groups. Moreover, the reflux symptom index (RSI) scores and the reflux finding score (RFS) exhibited a positive correlation with AHI. The current literature shows a higher incidence of LPR in individuals with OSAHS (49%). The severity of AHI in individuals with OSAHS is associated with the presence of LPR. Patients with OSAHS accompanied by LPR showed higher BMI and AHI as compared to those patients with LPR-negative OSAHS.
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Affiliation(s)
- Jie He
- Clinical Medical College of Chengdu Medical College, Chengdu, People's Republic of China.,Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Chengdu Medical College, Chengdu, People's Republic of China
| | - Chunmao Wang
- Clinical Medical College of Chengdu Medical College, Chengdu, People's Republic of China.,Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Chengdu Medical College, Chengdu, People's Republic of China
| | - Wancheng Li
- Clinical Medical College of Chengdu Medical College, Chengdu, People's Republic of China.,Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Chengdu Medical College, Chengdu, People's Republic of China
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Eckley CA, Tangerina R. Using RSI and RFS scores to differentiate between reflux-related and other causes of chronic laryngitis. Braz J Otorhinolaryngol 2021; 89:54-59. [PMID: 34840124 PMCID: PMC9874340 DOI: 10.1016/j.bjorl.2021.08.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 06/28/2021] [Accepted: 08/09/2021] [Indexed: 02/07/2023] Open
Abstract
OBJECTIVE To establish if the Reflux Symptom Index (RFI) and the Reflux Finding Score (RFC) can help establish the differential diagnosis in patients with distinct causes of chronic laryngopharyngitis. METHODS A group of 102 adult patients with chronic laryngopharyngitis (Group A - 37 patients with allergic rhinitis; Group B - 22 patients with Obstructive Sleep Apnea (OSA); Group C - 43 patients with Laryngopharyngeal Reflux (LPR)) were prospectively studied. Chronic laryngitis was diagnosed based on suggestive symptoms and videolaryngoscopic signs (RSI ≥ 13 and RFS ≥ 7). Allergies were confirmed by a positive serum RAST, OSA was diagnosed with a positive polysomnography, and LPR with a positive impedance-PH study. Discriminant function analysis was used to determine if the combination of RSI and RFS scores could differentiate between groups. RESULTS Patients with respiratory allergies and those with LPR showed similar and significantly higher RSI scores when compared to that of patients with OSA (p < 0.001); Patients with OSA and those with LPR showed similar and significantly higher RFS scores when compared to that of patients with Respiratory Allergies (OSA vs. Allergies p < 0.001; LPR vs. Allergies p < 0.002). The combination of both scores held a higher probability of diagnosing OSA (72.73%) and Allergies (64.86%) than diagnosing LPR (51.16%). CONCLUSIONS RSI and RFS are not specific for reflux laryngitis and are more likely to induce a false diagnosis if not used with diligence.
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Yue R, Xing D, Qin J, Lu H, Liu C, Li S, Wu D. The effect of obstructive sleep apnea surgery on laryngopharyngeal reflux with obstructive sleep apnea. Acta Otolaryngol 2020; 140:697-701. [PMID: 32340527 DOI: 10.1080/00016489.2020.1755448] [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: 10/24/2022]
Abstract
Background: Obstructive sleep apnea (OSA) may play a role in the occurrence of laryngopharyngeal reflux (LPR). OSA surgery also may have a significant curative effect on LPR with OSA.Objectives: To analyze the role of OSA in LPR and the effect of OSA surgery on LPR with OSA.Methods: Forty-five OSA patients with LPR symptoms were enrolled and were divided into the LPR positive group (RSI > 13) and the LPR suspicious group (1 ≤ RSI ≤ 13) based on reflux symptom index (RSI). All the patients underwent OSA surgery. The RSI scores at three different time points postoperatively were compared with that preoperatively.Results: In the LPR positive and LPR suspicious group, the result revealed that there were significant differences in RSI score between one month, three months, six months after surgery and before surgery (p < .001 for all). Moreover, in the LPR positive group, there was a significant difference in RSI score among one month, three months and six months after surgery (p = .01).Conclusions and significance: The effect of OSA on LPR exists and OSA surgery can improve the symptoms of LPR with OSA obviously. For some LPR patients with OSA, the combination therapy of OSA and LPR is needed.
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Affiliation(s)
- Ruiyi Yue
- Postgraduate Training Base of Jinzhou Medical University in the General Hospital of Northern Theater Command, Jinzhou, China
- Department of Otolaryngology, General Hospital of Northern Theater Command, Shenyang, China
| | - Dengxiang Xing
- Department of Medical Information Center, General Hospital of Northern Theater Command, Shenyang, China
| | - Jie Qin
- Department of Otolaryngology, General Hospital of Northern Theater Command, Shenyang, China
| | - Haibo Lu
- Postgraduate Training Base of Jinzhou Medical University in the General Hospital of Northern Theater Command, Jinzhou, China
- Department of Otolaryngology, General Hospital of Northern Theater Command, Shenyang, China
| | - Chun Liu
- Postgraduate Training Base of Jinzhou Medical University in the General Hospital of Northern Theater Command, Jinzhou, China
- Department of Otolaryngology, General Hospital of Northern Theater Command, Shenyang, China
| | - Shuhua Li
- Department of Otolaryngology, General Hospital of Northern Theater Command, Shenyang, China
| | - Dahai Wu
- Department of Otolaryngology, General Hospital of Northern Theater Command, Shenyang, China
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Abstract
Obstructive sleep apnea (OSA) is a multisystem breathing disorder associated with increased morbidity and mortality. Clinical and operative assessment tools improve surgical approaches to treat airway obstruction. The primary sites of anatomic obstruction are at the levels of the nasal, palatal, and hypopharyngeal airway. The literature suggests a relationship between reduced neuromuscular tone and the age-related increase in OSA prevalence for normal-weight adults. Pharyngeal soft tissue collapse due to reduced airway pressure is defined as the critical closing pressure. Respiratory biochemistry homeostasis is an additional factor in maintaining airway patency.
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Affiliation(s)
- Kevin Coughlin
- Department of Otolaryngology-Head and Neck Surgery, University of Tennessee Health Science Center, 910 Madison Avenue, Suite 410, Memphis, TN 38163, USA
| | - George M Davies
- Department of Otolaryngology-Head and Neck Surgery, University of Tennessee Health Science Center, 855 Monroe Avenue, Suite 327, Memphis, TN 38163, USA.
| | - Marion Boyd Gillespie
- Department of Otolaryngology-Head and Neck Surgery, University of Tennessee Health Science Center, 910 Madison Avenue, Suite 408, Memphis, TN 38163, USA
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Roy N, Merrill RM, Pierce J, Sundar KM. Evidence of Possible Irritable Larynx Syndrome in Obstructive Sleep Apnea: An Epidemiologic Approach. J Voice 2020; 35:932.e29-932.e38. [PMID: 32171641 DOI: 10.1016/j.jvoice.2020.02.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 12/12/2019] [Accepted: 02/06/2020] [Indexed: 12/12/2022]
Abstract
OBJECTIVE "Irritable larynx syndrome" (ILS) often refers to a constellation of laryngeal-based symptoms including chronic cough (CC), diurnal dyspnea, and dysphonia. In patients with OSA, we examined: (1) the frequency, severity, comorbidity, risks and triggers of each problem, (2) whether these symptoms were compatible with stereotypic ILS and (3) the role of CPAP in their expression. STUDY DESIGN Cross-sectional, descriptive epidemiology study. SETTING Sleep-Wake Center at University of Utah Health Care, Salt Lake City, UT. SUBJECTS AND METHODS Ninety-four individuals with OSA (53 men, 41 women; mean age 54.7 ± 12.8 yrs.) underwent an extensive telephone interview that addressed study objectives. RESULTS Long-term CC, daytime breathing and voice problems were common, especially among women despite less severe OSA. Women, more than men, reported all three chronic conditions alone or in combination: CC (44% vs 11.3%), diurnal dyspnea (41.5% vs 13.2%) and voice disorders (41.5% vs 13.2%). Symptoms were not associated with age, BMI or Apnea Hypopnea Index after adjusting for sex. Although evidence supporting stereotypic ILS symptomatology was inconsistent, those participants with a voice disorder were 3.3 (95% CI = 1.8-6.0) times more likely to report CC and 2.4 (95% CI = 1.3-4.4) times more likely to experience diurnal dyspnea. Esophageal reflux, post-nasal drip, and frequent sinus infections were significantly associated with all three conditions. Triggers that provoked or made symptoms worse varied by condition and sex. Nightly, humidified CPAP use was associated with fewer symptoms overall and improved quality of life. CONCLUSIONS Symptoms suggestive of possible ILS are common in OSA, especially among women, and lessened by nightly CPAP use.
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Affiliation(s)
- Nelson Roy
- Department of Communication Sciences and Disorders, The University of Utah, Salt Lake City, Utah.
| | - Ray M Merrill
- Department of Public Health, Brigham Young University, Provo, Utah
| | - Jenny Pierce
- Department of Communication Sciences and Disorders, The University of Utah, Salt Lake City, Utah
| | - Krishna M Sundar
- Division of Pulmonary, Critical Care and Sleep Medicine, The University of Utah, Salt Lake City, Utah
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Borders JC, O'Dea MB, McNally E, Norberg E, Kitila M, Walsh M, Liu R, Pisegna JM. Inter- and Intra-Rater Reliability of Laryngeal Sensation Testing with the Touch Method During Flexible Endoscopic Evaluations of Swallowing. Ann Otol Rhinol Laryngol 2020; 129:565-571. [PMID: 31958985 DOI: 10.1177/0003489419901145] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
OBJECTIVES Sensation is an integral component of laryngeal control for breathing, swallowing, and vocalization. Laryngeal sensation is assessed by elicitation of the laryngeal adductor reflex (LAR), a brainstem-mediated adduction of the true vocal folds. During Flexible Endoscopic Evaluations of Swallowing (FEES), the touch method can be used to elicit the LAR to judge laryngeal sensation. Despite the prevalence of this method in clinical practice and research, prior studies have yet to examine inter- and intra-rater reliability. METHODS Four speech-language pathologists rated 125 randomized video clips for the presence, absence, or inability to rate the LAR. Fifty percent of video clips were re-randomized and re-rated 1 week later. Raters then created guidelines and participated in formal consensus training sessions on a separate set of videos. Ratings were repeated post-training. RESULTS Overall inter-rater reliability was fair (κ = 0.22) prior to training. Pre-training intra-rater reliability ranged from fair (κ = 0.35) to almost perfect (κ = 0.89). Inter-rater reliability significantly improved after training (κ = 0.42, P < .001), though agreement did not reach prespecified acceptable levels (κ ≥ 0.80). Post-training intra-rater reliability ranged from moderate (κ = 0.49) to almost perfect (κ = 0.85). CONCLUSION Adequate inter-rater reliability was not achieved when rating isolated attempts to elicit the LAR. Acceptable within-rater reliability was observed in some raters 1 week after initial ratings, suggesting that ratings may remain consistent within raters over a short period of time. Limitations and considerations for future research using the touch method are discussed.
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Affiliation(s)
| | | | | | | | | | | | - Rui Liu
- Department of Communication Sciences and Disorders, MGH-Institute of Health Professions, Boston, MA, USA
| | - Jessica M Pisegna
- Boston Medical Center, Boston, MA, USA.,Department of Otolaryngology, School of Medicine, Boston University, Boston, MA, USA
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Caparroz F, Campanholo M, Stefanini R, Vidigal T, Haddad L, Bittencourt LR, Tufik S, Haddad F. Laryngopharyngeal reflux and dysphagia in patients with obstructive sleep apnea: is there an association? Sleep Breath 2019; 23:619-626. [PMID: 31020485 DOI: 10.1007/s11325-019-01844-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 04/07/2019] [Accepted: 04/10/2019] [Indexed: 02/06/2023]
Abstract
INTRODUCTION There is evidence that patients with obstructive sleep apnea (OSA) tend to have a high prevalence of laryngopharyngeal reflux (LPR) and dysphagia. These diseases are known to share the same risk factors and may be interrelated, but there is a lack of studies evaluating their co-occurrence. OBJECTIVES To evaluate whether the presence of signs and symptoms suggestive of LPR may be associated with the presence of dysphagia in patients with moderate and severe obstructive sleep apnea (OSA), as well as assess the additional impact of these diseases on quality of life in patients with OSA. METHODS Seventy adult patients with moderate or severe OSA were included in the study. The RSI (Reflux Symptom Index) and Swallowing Quality of Life (SWAL-QOL) in dysphagia questionnaires were administered, laryngoscopy was performed to calculate the Reflux Finding Score (RFS), and fiber-optic endoscopic evaluation of swallowing (FEES) was conducted. RESULTS The prevalence of LPR was 59.7%, and the prevalence of dysphagia was 27.3%. The association between LPR and dysphagia was present in 17.9% of patients, but with no statistically significant difference. Lower SWAL-QOL scores were observed in several domains in patients with LPR and in only one domain in patients with evidence of dysphagia on FEES. CONCLUSIONS Although 17.9% of patients presented with findings suggestive of concomitant LPR and dysphagia, there was no statistically significant association between these two conditions. Patients with LPR had worse scores in several domains of dysphagia-related quality of life, while FEES evidence of dysphagia was associated with worse quality of life in only one domain.
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Affiliation(s)
- Fabio Caparroz
- Department of Otorhinolaryngology and Head and Neck Surgery, Escola Paulista de Medicina, Federal University of São Paulo (UNIFESP), Sao Paulo, Brazil.
| | - Milena Campanholo
- Department of Otorhinolaryngology and Head and Neck Surgery, Escola Paulista de Medicina, Federal University of São Paulo (UNIFESP), Sao Paulo, Brazil
| | - Renato Stefanini
- Department of Otorhinolaryngology and Head and Neck Surgery, Escola Paulista de Medicina, Federal University of São Paulo (UNIFESP), Sao Paulo, Brazil
| | - Tatiana Vidigal
- Department of Otorhinolaryngology and Head and Neck Surgery, Escola Paulista de Medicina, Federal University of São Paulo (UNIFESP), Sao Paulo, Brazil
| | - Leonardo Haddad
- Department of Otorhinolaryngology and Head and Neck Surgery, Escola Paulista de Medicina, Federal University of São Paulo (UNIFESP), Sao Paulo, Brazil
| | - Lia Rita Bittencourt
- Department of Psychobiology, Instituto do Sono, Federal University of São Paulo (UNIFESP), Sao Paulo, Brazil
| | - Sergio Tufik
- Department of Psychobiology, Instituto do Sono, Federal University of São Paulo (UNIFESP), Sao Paulo, Brazil
| | - Fernanda Haddad
- Department of Otorhinolaryngology and Head and Neck Surgery, Escola Paulista de Medicina, Federal University of São Paulo (UNIFESP), Sao Paulo, Brazil
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Roy N, Merrill RM, Pierce J, Sundar KM. Voice Disorders in Obstructive Sleep Apnea: Prevalence, Risk Factors, and the Role of CPAP. Ann Otol Rhinol Laryngol 2018; 128:249-262. [PMID: 30577715 DOI: 10.1177/0003489418819541] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
OBJECTIVE Obstructive sleep apnea (OSA) is characterized by frequent interruptions in breathing related to upper airway collapse during sleep and may adversely affect phonatory function. This study aimed to: (1) establish the prevalence, risks, and quality of life burden of voice disorders in OSA and (2) explore the relation between voice disorders and positive airway pressure (PAP) therapy. STUDY DESIGN Cross-sectional, descriptive epidemiology study. METHODS Analyses were based on 94 individuals with OSA (53 men, 41 women; mean age = 54.7 ± 12.8 years) who completed a telephone interview. RESULTS Twenty-eight percent of participants reported having a current voice disorder. Of those with a current voice disorder, 83% had experienced symptoms for at least a year, and 58% had symptoms for at least 4 years. The prevalence of a current voice disorder was greater in women than men (44% vs 15%, P = .0020) but did not vary significantly across different age groups, body mass index (BMI), apnea/hypopnea index (AHI) severity, or medical history. After adjusting for sex, consistent use of PAP therapy (with humidification) was associated with (1) lower occurrence of voice disorders in women (Mantel-Haenszel [MH] χ2P = .0195), (2) reduced snoring severity accompanied by fewer voice disorders in men (MH χ2P = .0101), and (3) fewer reports of acid reflux as a possible trigger for voice problems (MH χ2P = .0226). Patients with OSA who also had a current voice disorder experienced lower overall quality of life compared to those without. CONCLUSIONS Chronic, longstanding voice disorders are common in women with OSA and produce significant adverse effects on quality of life. Nightly PAP use (with humidification) was associated with fewer voice symptoms and reduced severity of snoring and acid reflux as possible contributors. Further research is necessary to better understand the origin of these voice disorders in OSA and their potential response to treatment.
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Affiliation(s)
- Nelson Roy
- Department of Communication Sciences and Disorders, The University of Utah, Salt Lake City, UT, USA
| | - Ray M Merrill
- Department of Public Health, Brigham Young University, Provo, UT, USA
| | - Jenny Pierce
- Department of Communication Sciences and Disorders, The University of Utah, Salt Lake City, UT, USA
| | - Krishna M Sundar
- Division of Pulmonary, Critical Care and Sleep Medicine, The University of Utah, Salt Lake City, UT, USA
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Caparroz FA, de Almeida Torres Campanholo M, Sguillar DA, Haddad L, Park SW, Bittencourt L, Tufik S, Haddad FLM. A Pilot Study on the Efficacy of Continuous Positive Airway Pressure on the Manifestations of Dysphagia in Patients with Obstructive Sleep Apnea. Dysphagia 2018; 34:333-340. [PMID: 30251146 DOI: 10.1007/s00455-018-9944-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Accepted: 09/17/2018] [Indexed: 12/29/2022]
Abstract
There is evidence in the literature demonstrating that patients with obstructive sleep apnea (OSA) may present with dysphagia, but few studies have evaluated whether this complaint can be reversed with treatment of OSA. To assess whether findings of dysphagia in patients with OSA can be reversed with the use of continuous positive airway pressure (CPAP) devices. Seventy adult patients (age 18-70 years) with moderate or severe OSA were included in the study. All patients underwent fiberoptic endoscopic evaluation of swallowing (FEES) and completed the SWAL-QOL questionnaire on quality of life in dysphagia. Patients with visible abnormalities on FEES were treated with CPAP and reassessed after 3 months. The prevalence of dysphagia was 27.3% (18 patients). Premature spillage was the main finding. On comparison of groups with and without dysphagia, the SWAL-QOL score was significantly worse in the dysphagia group in domain 2 (eating duration and eating desire, p = 0.015), with no impact on overall score (p = 0.107). Of the 18 patients with dysphagia, 12 were started on CPAP; 11 exhibited satisfactory adherence and remained in the study. Abnormal FEES findings resolved in 81% (n = 9/11) of patients who started CPAP (p = 0.004), and dysphagia-specific quality of life also improved significantly (overall SWAL-QOL score, p = 0.028). In this sample of patients with OSA, the overall prevalence of dysphagia (as demonstrated by premature spillage on FEES) was 27.3%. Treatment of OSA with CPAP was able to reverse the endoscopic findings of swallowing dysfunction and to improve quality of life as measured by the SWAL-QOL.
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Affiliation(s)
- Fabio Azevedo Caparroz
- Departamento de Otorrinolaringologia e Cirurgia de Cabeça e Pescoço, Universidade Federal de São Paulo, São Paulo, Brazil
| | | | - Danilo Anunciatto Sguillar
- Departamento de Otorrinolaringologia e Cirurgia de Cabeça e Pescoço, Universidade Federal de São Paulo, São Paulo, Brazil.
| | - Leonardo Haddad
- Departamento de Otorrinolaringologia e Cirurgia de Cabeça e Pescoço, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Sung Woo Park
- Departamento de Otorrinolaringologia e Cirurgia de Cabeça e Pescoço, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Lia Bittencourt
- Departamento de Psicobiologia, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Sergio Tufik
- Departamento de Psicobiologia, Universidade Federal de São Paulo, São Paulo, Brazil
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21
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Ban MJ, Kim WS, Park KN, Kim JW, Lee SW, Han K, Chang JW, Byeon HK, Koh YW, Park JH. Korean survey data reveals an association of chronic laryngitis with tinnitus in men. PLoS One 2018; 13:e0191148. [PMID: 29324903 PMCID: PMC5764343 DOI: 10.1371/journal.pone.0191148] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Accepted: 01/02/2018] [Indexed: 12/12/2022] Open
Abstract
The association between chronic laryngitis and tinnitus is not a well-studied topic, unlike the association of these two conditions with many other disorders. Cross-sectional data of 11,347 adults (males: 4,934; females: 6,413), who completed the Korea National Health and Nutrition Examination Survey (KNHANES) from 2010 to 2012 were used to investigate this association. Lifestyle patterns, including smoking and alcohol habits, regular exercise, physical and mental health status, socioeconomic status, nutritional status, and other chronic diseases, were analyzed. Chronic laryngitis and tinnitus were diagnosed by field survey teams, which included otolaryngologists, who conducted chronic disease surveillance using a health status interview, a nutritional status questionnaire, and a physical examination. Chronic laryngitis was significantly associated with age, education beyond high school, depressed mood, voice change, metabolic syndrome, and tinnitus in men. In women, chronic laryngitis was associated with body mass index and diabetes mellitus. Chronic laryngitis in men was significantly associated with tinnitus (odds ratio 1.671, [95% confidence interval: 1.167-2.393]) after adjusting for age, body mass index, smoking status, alcohol intake, regular exercise, metabolic syndrome, education beyond high school, and depressed mood. Additionally, the prevalence of chronic laryngitis increased with increasing severity of tinnitus in men alone (P = 0.002). The study revealed a significant association between chronic laryngitis and tinnitus.
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Affiliation(s)
- Myung Jin Ban
- Department of Otolaryngology-Head and Neck Surgery, Soonchunhyang University College of Medicine, Cheonan, Republic of Korea.,Department of Medicine, Graduate School, Yonsei University, Seoul, Republic of Korea
| | - Won Shik Kim
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea
| | - Ki Nam Park
- Department of Otolaryngology-Head and Neck Surgery, Soonchunhyang University College of Medicine, Bucheon, Republic of Korea
| | - Jae Wook Kim
- Department of Otolaryngology-Head and Neck Surgery, Soonchunhyang University College of Medicine, Seoul, Republic of Korea
| | - Seung Won Lee
- Department of Otolaryngology-Head and Neck Surgery, Soonchunhyang University College of Medicine, Bucheon, Republic of Korea
| | - Kyungdo Han
- Department of Biostatistics, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Jae Won Chang
- Department of Otorhinolaryngology, Chungnam National University College of Medicine, Daejeon, Korea
| | - Hyung Kwon Byeon
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea
| | - Yoon Woo Koh
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea
| | - Jae Hong Park
- Department of Otolaryngology-Head and Neck Surgery, Soonchunhyang University College of Medicine, Cheonan, Republic of Korea
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Lee JS, Heo SJ, Kim JS, Ahn D, Sohn JH, Kim H. Relationship between the severity of laryngopharyngeal reflux and sleep apnea: using drug-induced sleep endoscopy (DISE). Eur Arch Otorhinolaryngol 2017; 275:219-224. [DOI: 10.1007/s00405-017-4812-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2017] [Accepted: 11/15/2017] [Indexed: 12/21/2022]
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Kim SJ, Kim HY, Jeong JI, Hong SD, Chung SK, Dhong HJ. Changes in the Reflux Symptom Index After Multilevel Surgery for Obstructive Sleep Apnea. Clin Exp Otorhinolaryngol 2017; 10:259-264. [PMID: 28449553 PMCID: PMC5545698 DOI: 10.21053/ceo.2017.00052] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 03/16/2017] [Accepted: 03/22/2017] [Indexed: 11/22/2022] Open
Abstract
Objectives This study evaluated whether the symptoms of laryngopharyngeal reflux (LPR) change after multilevel surgery for obstructive sleep apnea (OSA). Methods Patients who underwent multilevel surgery for OSA between April 2009 and September 2014 were enrolled in this study. All patients underwent preoperative polysomnography prior to surgery and were asked to complete the reflux symptom index (RSI) questionnaire before and after surgery. Results Of 73 enrolled patients, 24 (33%) reported an RSI score >13 and were thus classified as having reflux. The mean RSI score before surgery was 11.48±7.95; this number decreased to 4.95±6.19 after surgery (P<0.001). The rate of positive RSI responses was 33% before surgery and 9% after surgery. Each variable that comprised the RSI improved significantly after surgery, except for difficulty with swallowing. Regarding the degree of RSI improvement after surgery, there were no significant differences between subgroups according to sex, age, body mass index, OSA severity, or surgical outcome. Conclusion LPR symptoms are prevalent in OSA patients. Treatment for OSA using multilevel surgery potentially reduces the symptoms of LPR.
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Affiliation(s)
- Su Jin Kim
- Department of Otorhinolaryngology, Eulji University Hospital, Eulji University School of Medicine, Daejeon, Korea
| | - Hyo Yeol Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jong In Jeong
- Department of Otolaryngology, Keimyung University School of Medicine, Daegu, Korea
| | - Sang Duk Hong
- Department of Otorhinolaryngology-Head and Neck Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Seung-Kyu Chung
- Department of Otorhinolaryngology-Head and Neck Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Hun-Jong Dhong
- Department of Otorhinolaryngology-Head and Neck Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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Emilsson ÖI, Benediktsdóttir B, Ólafsson Í, Cook E, Júlíusson S, Berg S, Nordang L, Björnsson ES, Guðlaugsdóttir S, Guðmundsdóttir AS, Janson C, Gislason T. Definition of nocturnal gastroesophageal reflux for studies on respiratory diseases. Scand J Gastroenterol 2016; 51:524-30. [PMID: 26825677 DOI: 10.3109/00365521.2015.1124284] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
OBJECTIVE Nocturnal gastroesophageal reflux (nGER) has been associated with respiratory diseases. Our aim was to study a questionnaire method to identify nGER subjects with respiratory involvement in a general population. MATERIAL AND METHODS A subgroup of Icelandic participants in the European Community Respiratory Health Survey III (ECRHS III) reporting symptoms of nGER (n = 48) as well as age and gender paired controls (n = 42) were studied further by a structured interview, questionnaires, laryngeal fibrescopy, and exhaled breath condensate. A subgroup underwent 24-h oesophageal pH impedance (24-h MII-pH) measurements. Symptoms of nGER were assessed with a modified version of the reflux disease questionnaire (RDQ), where symptoms were divided into daytime and nocturnal. A report of nGER both at baseline and at follow-up was defined as persistent nGER. RESULTS Participants reporting persistent nGER had significantly more signs of laryngopharyngeal reflux according to the reflux finding score than those without nGER (Mean ± SD: 5.1 ± 2.3 vs. 3.9 ± 2.2, p = 0.02). Of the 16 persistent nGER subjects that underwent 24-h MII-pH, 11 had abnormal gastroesophageal reflux, but none of three control subjects (69% vs. 0%). Pepsin was more commonly found in exhaled breath condensate in the nGER group (67% vs. 45%, p = 0.04). CONCLUSIONS Participants with nGER symptoms at least once a month, reported on two occasions, had a high level of positive 24-h MII-pH measurements, laryngeal inflammation and pepsin in exhaled breath condensate. This nGER definition identified a representable group for studies on nGER and respiratory diseases in a general population.
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Affiliation(s)
- Össur Ingi Emilsson
- a Faculty of Medicine, University of Iceland , Reykjavik , Iceland ;,b Department of Respiratory Medicine and Sleep , Landspitali University Hospital , Reykjavik , Iceland ;,c Department of Respiratory , Allergy and Sleep Research, Uppsala University , Uppsala , Sweden
| | - Bryndís Benediktsdóttir
- a Faculty of Medicine, University of Iceland , Reykjavik , Iceland ;,b Department of Respiratory Medicine and Sleep , Landspitali University Hospital , Reykjavik , Iceland
| | - Ísleifur Ólafsson
- d Department of Clinical Biochemistry , Landspitali University Hospital , Reykjavik , Iceland
| | - Elizabeth Cook
- d Department of Clinical Biochemistry , Landspitali University Hospital , Reykjavik , Iceland
| | - Sigurður Júlíusson
- a Faculty of Medicine, University of Iceland , Reykjavik , Iceland ;,e Department of Ear, Nose and Throat , Landspitali University Hospital , Reykjavik , Iceland
| | - Sören Berg
- f Department of Otolaryngology and Head and Neck Surgery , Lund University , Lund , Sweden
| | - Leif Nordang
- g Department of Surgical Sciences , Otorhinolaryngology and Head and Neck Surgery, Uppsala University , Uppsala , Sweden
| | - Einar Stefán Björnsson
- a Faculty of Medicine, University of Iceland , Reykjavik , Iceland ;,h Department of Gastroenterology , Landspitali University Hospital , Reykjavik , Iceland
| | - Sunna Guðlaugsdóttir
- h Department of Gastroenterology , Landspitali University Hospital , Reykjavik , Iceland
| | | | - Christer Janson
- c Department of Respiratory , Allergy and Sleep Research, Uppsala University , Uppsala , Sweden
| | - Thorarinn Gislason
- a Faculty of Medicine, University of Iceland , Reykjavik , Iceland ;,b Department of Respiratory Medicine and Sleep , Landspitali University Hospital , Reykjavik , Iceland
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Emilsson ÖI, Benediktsdóttir B, Ólafsson Í, Cook E, Júlíusson S, Björnsson ES, Guðlaugsdóttir S, Guðmundsdóttir AS, Mirgorodskaya E, Ljungström E, Arnardóttir ES, Gíslason Þ, Janson C, Olin AC. Respiratory symptoms, sleep-disordered breathing and biomarkers in nocturnal gastroesophageal reflux. Respir Res 2016; 17:115. [PMID: 27646537 PMCID: PMC5029098 DOI: 10.1186/s12931-016-0431-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Accepted: 09/12/2016] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Nocturnal gastroesophageal reflux (nGER) is associated with respiratory symptoms and sleep-disordered breathing (SDB), but the pathogenesis is unclear. We aimed to investigate the association between nGER and respiratory symptoms, exacerbations of respiratory symptoms, SDB and airway inflammation. METHODS Participants in the European Community Respiratory Health Survey III in Iceland with nGER symptoms (n = 48) and age and gender matched controls (n = 42) were studied by questionnaires, exhaled breath condensate (EBC), particles in exhaled air (PEx) measurements, and a home polygraphic study. An exacerbation of respiratory symptoms was defined as an episode of markedly worse respiratory symptoms in the previous 12 months. RESULTS Asthma and bronchitis symptoms were more common among nGER subjects than controls (54 % vs 29 %, p = 0.01; and 60 % vs 26 %, p < 0.01, respectively), as were exacerbations of respiratory symptoms (19 % vs 5 %, p = 0.04). Objectively measured snoring was more common among subjects with nGER than controls (snores per hour of sleep, median (IQR): 177 (79-281) vs 67 (32-182), p = 0.004). Pepsin (2.5 ng/ml (0.8-5.8) vs 0.8 ng/ml (0.8-3.6), p = 0.03), substance P (741 pg/ml (626-821) vs 623 pg/ml (562-676), p < 0.001) and 8-isoprostane (3.0 pg/ml (2.7-3.9) vs 2.6 pg/ml (2.2-2.9), p = 0.002) in EBC were higher among nGER subjects than controls. Albumin and surfactant protein A in PEx were lower among nGER subjects. These findings were independent of BMI. CONCLUSION In a general population sample, nGER is associated with symptoms of asthma and bronchitis, as well as exacerbations of respiratory symptoms. Also, nGER is associated with increased respiratory effort during sleep. Biomarker measurements in EBC, PEx and serum indicate that micro-aspiration and neurogenic inflammation are plausible mechanisms.
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Affiliation(s)
- Össur Ingi Emilsson
- Faculty of Medicine, University of Iceland, Vatnsmyrarvegur 16, 101, Reykjavik, Iceland
- Department of Respiratory Medicine and Sleep, Landspitali University Hospital, Reykjavik, Iceland
- Department of Respiratory, Allergy and Sleep Research, Uppsala University, Uppsala, Sweden
| | - Bryndís Benediktsdóttir
- Faculty of Medicine, University of Iceland, Vatnsmyrarvegur 16, 101, Reykjavik, Iceland
- Department of Respiratory Medicine and Sleep, Landspitali University Hospital, Reykjavik, Iceland
| | - Ísleifur Ólafsson
- Department of Clinical Biochemistry, Landspitali University Hospital, Reykjavik, Iceland
| | - Elizabeth Cook
- Department of Clinical Biochemistry, Landspitali University Hospital, Reykjavik, Iceland
| | - Sigurður Júlíusson
- Faculty of Medicine, University of Iceland, Vatnsmyrarvegur 16, 101, Reykjavik, Iceland
- Department of Otolaryngology, Landspitali University Hospital, Reykjavik, Iceland
| | - Einar Stefán Björnsson
- Faculty of Medicine, University of Iceland, Vatnsmyrarvegur 16, 101, Reykjavik, Iceland
- Department of Gastroenterology, Landspitali University Hospital, Reykjavik, Iceland
| | - Sunna Guðlaugsdóttir
- Department of Gastroenterology, Landspitali University Hospital, Reykjavik, Iceland
| | | | - Ekaterina Mirgorodskaya
- Department of Occupational and Environmental Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Evert Ljungström
- Department of Chemistry and Molecular Biology, University of Gothenburg, Gothenburg, Sweden
| | - Erna Sif Arnardóttir
- Faculty of Medicine, University of Iceland, Vatnsmyrarvegur 16, 101, Reykjavik, Iceland
- Department of Respiratory Medicine and Sleep, Landspitali University Hospital, Reykjavik, Iceland
| | - Þórarinn Gíslason
- Faculty of Medicine, University of Iceland, Vatnsmyrarvegur 16, 101, Reykjavik, Iceland
- Department of Respiratory Medicine and Sleep, Landspitali University Hospital, Reykjavik, Iceland
| | - Christer Janson
- Department of Respiratory, Allergy and Sleep Research, Uppsala University, Uppsala, Sweden
| | - Anna-Carin Olin
- Department of Occupational and Environmental Medicine, University of Gothenburg, Gothenburg, Sweden
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Association between Obstructive Sleep Apnea and Community-Acquired Pneumonia. PLoS One 2016; 11:e0152749. [PMID: 27050437 PMCID: PMC4822965 DOI: 10.1371/journal.pone.0152749] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Accepted: 03/18/2016] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND We hypothesized that obstructive sleep apnea (OSA) can predispose individuals to lower airway infections and community-acquired pneumonia (CAP) due to upper airway microaspiration. This study evaluated the association between OSA and CAP. METHODS We performed a case-control study that included 82 patients with CAP and 41 patients with other infections (control group). The controls were matched according to age, sex and body mass index (BMI). A respiratory polygraph (RP) was performed upon admission for patients in both groups. The severity of pneumonia was assessed according to the Pneumonia Severity Index (PSI). The associations between CAP and the Epworth Sleepiness Scale (ESS), OSA, OSA severity and other sleep-related variables were evaluated using logistic regression models. The associations between OSA, OSA severity with CAP severity were evaluated with linear regression models and non-parametric tests. FINDINGS No significant differences were found between CAP and control patients regarding anthropometric variables, toxic habits and risk factors for CAP. Patients with OSA, defined as individuals with an Apnea-Hypopnea Index (AHI) ≥10, showed an increased risk of CAP (OR = 2·86, 95%CI 1·29-6·44, p = 0·01). Patients with severe OSA (AHI≥30) also had a higher risk of CAP (OR = 3·18, 95%CI 1·11-11·56, p = 0·047). In addition, OSA severity, defined according to the AHI quartile, was also significantly associated with CAP (p = 0·007). Furthermore, OSA was significantly associated with CAP severity (p = 0·0002), and OSA severity was also associated with CAP severity (p = 0·0006). CONCLUSIONS OSA and OSA severity are associated with CAP when compared to patients admitted to the hospital for non-respiratory infections. In addition, OSA and OSA severity are associated with CAP severity. These results support the potential role of OSA in the pathogenesis of CAP and could have clinical implications. This link between OSA and infection risk should be explored to investigate the relationships among gastroesophageal reflux, silent aspiration, laryngeal sensory dysfunction and CAP. TRIAL REGISTRATION ClinicalTrials.gov NCT01071421.
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Qu Y, Ye JY, Han DM, Zheng L, Cao X, Zhang YH, Ding X. Esophageal Functional Changes in Obstructive Sleep Apnea/Hypopnea Syndrome and Their Impact on Laryngopharyngeal Reflux Disease. Chin Med J (Engl) 2016; 128:2162-7. [PMID: 26265608 PMCID: PMC4717981 DOI: 10.4103/0366-6999.162506] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
BACKGROUND Obstructive sleep apnea/hypopnea syndrome (OSAHS) and laryngopharyngeal reflux (LPR) disease have a high comorbidity rate, but the potential causal relation between the two diseases remains unclear. Our objectives were to investigate the esophageal functional changes in OSAHS patients and determine whether OSAHS affects LPR by affecting esophageal functions. METHODS Thirty-six OSAHS patients and 10 healthy controls underwent 24-h double-probed combined esophageal multichannel intraluminal impedance and pH monitoring simultaneously with polysomnography. High-resolution impedance manometry was applied to obtain a detailed evaluation of pharyngeal and esophageal motility. RESULTS There were 13 OSAHS patients (36.1%) without LPR (OSAHS group) and 23 (63.9%) with both OSAHS and LPR (OSAHS and LPR group). Significant differences were found in the onset velocity of liquid swallows (OVL, P = 0.029) and the percent relaxation of the lower esophageal sphincter (LES) during viscous swallows (P = 0.049) between the OSAHS and control groups. The percent relaxation of LES during viscous swallows was found to be negatively correlated with upright distal acid percent time (P = 0.016, R = -0.507), and OVL was found to be negatively correlated with recumbent distal acid percent time (P = 0.006, R = -0.557) in the OSAHS and LPR group. CONCLUSIONS OSAHS patients experience esophageal functional changes, and linear correlations were found between the changed esophageal functional parameters and reflux indicators, which might be the reason that LPR showed a high comorbidity with OSAHS and why the severity of the two diseases is correlated.
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Affiliation(s)
| | | | - De-Min Han
- Department of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
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Kim KB. How has our interest in the airway changed over 100 years? Am J Orthod Dentofacial Orthop 2016; 148:740-7. [PMID: 26522033 DOI: 10.1016/j.ajodo.2015.08.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Revised: 08/01/2015] [Accepted: 08/01/2015] [Indexed: 12/01/2022]
Abstract
Since the beginning of our specialty, our understanding of the link between function and facial growth and development has progressively improved. Today, we know that children with sleep-related breathing problems will often develop distinctive facial characteristics. In adults, sleep apnea can result in serious morbidity and mortality. Orthodontists can ask sleep-related questions in the health history to help identify sleep breathing disorders. Treating these patients presents unique opportunities for orthodontists to collaborate with other medical specialties to improve a patient's health and treatment outcome. Research presented in our Journal in the next century may shed new light that will help us better identify the problem and aid the specialty in developing more effective evidence-based treatment. Additional efforts are needed to understand the physiology, neurology, and genetics of sleep breathing disorders.
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Affiliation(s)
- Ki Beom Kim
- Associate professor, Department of Orthodontics, Center for Advanced Dental Education, Saint Louis University, St Louis, Mo.
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Gilani S, Quan SF, Pynnonen MA, Shin JJ. Obstructive Sleep Apnea and Gastroesophageal Reflux: A Multivariate Population-Level Analysis. Otolaryngol Head Neck Surg 2015; 154:390-5. [PMID: 26645532 DOI: 10.1177/0194599815621557] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Accepted: 11/18/2015] [Indexed: 11/15/2022]
Abstract
OBJECTIVES Previous studies investigating the relationship between gastroesophageal reflux (GER) and obstructive sleep apnea (OSA) demonstrate mixed results and have had limited capacity to control for concurrent confounders. Our objectives were to (1) determine if GER is significantly associated with OSA when simultaneously adjusting for the presence of other potentially confounding conditions and (2) quantify the magnitude of any such association that exists. STUDY DESIGN Cross-sectional analysis of the National Ambulatory Medical Care Survey and National Hospital Ambulatory Medical Care Survey, 2005-2010. SETTING Ambulatory visits in the United States. SUBJECTS AND METHODS Adults with a diagnosis of OSA or GER and potentially confounding conditions were identified. Univariate and multivariate logistic regression analyses were performed, as well as sensitivity analyses based on increasingly narrow diagnostic definitions. RESULTS A significant positive association between GER and OSA was observed, which persisted after adjustment for age, sex, race/ethnicity, sinonasal obstructive and inflammatory disorders, laryngopharyngeal obstructive and inflammatory disorders, obesity, asthma, and lung disorders. This positive association remained significant regardless of diagnostic criteria, whether broad (odds ratio: 1.94, 95% confidence interval: 1.07-3.54, P = .030) or narrow (odds ratio: 2.13, 95% confidence interval: 1.17-3.88, P = .014). CONCLUSION In this analysis of a national database defining the 3 most prioritized diagnoses, GER is independently associated with OSA, with double the odds of concurrent occurrence, even while controlling for potentially related conditions.
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Affiliation(s)
- Sapideh Gilani
- Department of Otolaryngology, Harvard Medical School, Boston, Massachusetts, USA
| | - Stuart F Quan
- Division of Sleep Medicine, Harvard Medical School, Boston, Massachusetts, USA
| | - Melissa A Pynnonen
- Department of Otolaryngology, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Jennifer J Shin
- Department of Otolaryngology, Harvard Medical School, Boston, Massachusetts, USA
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Montero Benavides A, Fernández Pozo R, Toledano DT, Blanco Murillo JL, López Gonzalo E, Hernández Gómez L. Analysis of voice features related to obstructive sleep apnoea and their application in diagnosis support. COMPUT SPEECH LANG 2014. [DOI: 10.1016/j.csl.2013.08.002] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Horner RL. Neural control of the upper airway: integrative physiological mechanisms and relevance for sleep disordered breathing. Compr Physiol 2013; 2:479-535. [PMID: 23728986 DOI: 10.1002/cphy.c110023] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The various neural mechanisms affecting the control of the upper airway muscles are discussed in this review, with particular emphasis on structure-function relationships and integrative physiological motor-control processes. Particular foci of attention include the respiratory function of the upper airway muscles, and the various reflex mechanisms underlying their control, specifically the reflex responses to changes in airway pressure, reflexes from pulmonary receptors, chemoreceptor and baroreceptor reflexes, and postural effects on upper airway motor control. This article also addresses the determinants of upper airway collapsibility and the influence of neural drive to the upper airway muscles, and the influence of common drugs such as ethanol, sedative hypnotics, and opioids on upper airway motor control. In addition to an examination of these basic physiological mechanisms, consideration is given throughout this review as to how these mechanisms relate to integrative function in the intact normal upper airway in wakefulness and sleep, and how they may be involved in the pathogenesis of clinical problems such obstructive sleep apnea hypopnea.
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Postthyroidectomy throat pain and swallowing: do proton pump inhibitors make a difference? ISRN OTOLARYNGOLOGY 2013; 2013:135978. [PMID: 24224101 PMCID: PMC3809932 DOI: 10.1155/2013/135978] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 07/25/2013] [Accepted: 09/04/2013] [Indexed: 11/18/2022]
Abstract
Objectives. Following thyroid surgery patients complain from swallowing disability and throat pain resembling symptoms of laryngopharyngeal reflux (LPR). The purpose of this study is to assess whether proton pump inhibitors (PPIs) given to patients in the first postoperative week relieve the swallowing disability and throat pain complaints. Materials and Methods. A questionnaire was given to 523 patients who had thyroid surgery between October 2010 and August 2011. In the first postoperative clinic visit each patient was approached to fill out a questionnaire. 208 patients met criteria, 100 of which were on PPIs (study group) and 108 were not on PPIs (control group). Results. When comparing the study group to the control group, the average pain level was 2.57 compared to 3.9 during the first postoperative week, and 1.27 compared to 2.41 at day 7 (P value = 0.001). Swallowing disability was also lower in the study group when compared to the control group, 1.87 and 3.12, respectively, during the first postoperative week and 0.87 and 1.76, respectively, at day 7 (P value = 0.007). Conclusion. Patients treated with PPIs had less pain and swallowing disability in the first week following thyroid surgery, when compared to patients not treated with PPIs.
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Xavier SD, Moraes JP, Eckley CA. Prevalence of signs and symptoms of laryngopharyngeal reflux in snorers with suspected obstructive sleep apnea. Braz J Otorhinolaryngol 2013; 79:589-93. [PMID: 24141673 PMCID: PMC9442380 DOI: 10.5935/1808-8694.20130105] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2012] [Accepted: 05/27/2013] [Indexed: 11/20/2022] Open
Abstract
Obstructive sleep apnea (OSA) is believed to be correlated with laryngopharyngeal reflux (LPR). Objective To study the prevalence of signs and symptoms of reflux in snorers with suspected OSA. Method This cross-sectional study enrolled 74 patients assessed positive for OSA with the Berlin questionnaire. The subjects were followed up at the sleep disorder ward of a university center. Studied variables included the BMI, the Epworth sleepiness scale, the reflux symptom index (RSI), the reflux finding score (RFS), and their subdomains related to increased inflammation. The correlations between sleep questionnaires, reflux scales, and their subdomains were deemed statistically significant when p < 0.05. Results Ninety-eight percent of the subjects had symptoms and signs suggestive of LPR; prevalence was significantly higher among obese individuals (p = 0.002). Conclusion The significant difference seen in the prevalence of signs of inflammation suggestive of LPR when obese and non-obese subjects with suspected OSA were compared indicates that obesity may affect inflammatory findings of the pharynx and larynx. The high prevalence of symptoms and signs of reflux in patients with suspected OSA calls for more studies on the matter.
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Kim MY, Jo EJ, Kang SY, Chang YS, Yoon IY, Cho SH, Min KU, Kim SH. Obstructive sleep apnea is associated with reduced quality of life in adult patients with asthma. Ann Allergy Asthma Immunol 2013; 110:253-7, 257.e1. [PMID: 23535088 DOI: 10.1016/j.anai.2013.01.005] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2012] [Revised: 01/07/2013] [Accepted: 01/07/2013] [Indexed: 11/18/2022]
Abstract
BACKGROUND Recent data suggest that obstructive sleep apnea (OSA) is an important contributor to severe uncontrolled asthma. OBJECTIVE To investigate the clinical characteristics, asthma control, and asthma-related quality of life in adult patients with asthma at a high risk for OSA. METHODS A total of 217 patients with asthma who visited our tertiary-care clinic were randomly recruited. They completed the Berlin questionnaire, which screens for OSA risk, a quality-of-life questionnaire for adult Korean patients with asthma (QLQAKA), and underwent an asthma control test (ACT). Fraction of exhaled nitric oxide (FeNO), lung function, blood lipid profiles, and body composition were evaluated. RESULTS The mean age was 58.4 ± 15.4, and 91 (41.9%) were male. Eighty-nine subjects (41.0%) were classified as high risk for OSA from the Berlin questionnaire. Patients with a high OSA risk were significantly older, had a higher prevalence of hypertension, higher BMI, non-atopic predisposition, and longer asthma treatment duration in the baseline clinical characteristics. The high OSA risk group had a lower ACT score than the low OSA risk group, but it was not statistically significant (20.9 ± 3.6 vs 21.5 ± 3.3, P = .091). The QLQAKA score was significantly lower in the high OSA risk group compared with the low OSA risk group (64.4 ± 10.9 vs 68.1 ± 11.1, P = .026), especially in the activity-domain (P = .005). The FeNO was not significantly different between the 2 groups. CONCLUSION Quality of life is significantly decreased in adult patients with asthma with a high risk of OSA. Special consideration is needed for the care and treatment of patients with asthma who have a high risk of OSA.
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Affiliation(s)
- Mi-Yeong Kim
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
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Lundkvist K, Friberg D. Pharyngeal disturbances in OSAS patients before and 1 year after UPPP. Acta Otolaryngol 2010; 130:1399-405. [PMID: 20629584 DOI: 10.3109/00016489.2010.496465] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
CONCLUSIONS The results indicate that conservative uvulopalatopharyngoplasty with tonsillectomy (UPPP) did not change the degree of pharyngeal disturbances in patients with obstructive sleep apnea syndrome (OSAS). OBJECTIVES To investigate if the symptom scores of pharyngeal disturbances in OSAS patients were changed 1 year after UPPP, by using a questionnaire pre- and postoperatively, and to compare with healthy non-snoring controls. METHODS Fifty men and eight women, median age 46 years (range 25-75), median body mass index (BMI) 28 kg/m2 (20-38), and median preoperative oxygen desaturation index 16 (7-100) were included as they had all failed non-surgical treatment and wanted pharyngeal surgery. The questionnaire consisted of 10 questions with 4 degrees of disturbances; the maximum score was 30 and was evaluated before and 1 year after surgery. Fifteen age-, gender- and BMI-matched controls responded to the same questionnaire. RESULTS Responses to the questionnaire were provided pre- and postoperatively by 47 of 58 patients (81%). Their median score was unchanged from 5 (range 0-17) to 5 (0-19), compared with controls 1 (0-3). Analyses of separate questions showed a significant decrease in the score for 'globus sensation' and 'swelling' postoperatively.
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Affiliation(s)
- Karin Lundkvist
- Department of Otorhinolaryngology, Karolinska University Hospital, Huddinge, Stockholm and Clintec, Karolinska Institute, Sweden.
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Williams MA, Gelaye B, Qiu C, Fida N, May Cripe S. Habitual snoring and asthma comorbidity among pregnant women. J Asthma 2010; 48:91-7. [PMID: 21091394 DOI: 10.3109/02770903.2010.535882] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND Obstructive sleep apnea (OSA) or habitual snoring and asthma are known comorbid conditions in men and non-pregnant women. This comorbidity has not been evaluated among pregnant women. We assessed the habitual snoring-asthma relationship among pregnant women. METHODS A cohort of women (N = 1335) were interviewed during pregnancy, and we ascertained participants' asthma status and collected information about habitual snoring, before and during pregnancy. Logistic regression procedures were used to estimate odds ratios (ORs) and 95% confidence intervals (CIs). RESULTS Compared with non-asthmatics, the adjusted OR among asthmatics for snoring before pregnancy was 2.13 (95% CI 1.10-4.12). The odds of snoring during early pregnancy was 1.79-fold (OR = 1.79; 95% C; 1.07-3.01). Associations were more pronounced among overweight (≥ 25 kg/m(2)) asthmatics (OR = 5.39; 95% CI 2.27-12.75). CONCLUSIONS We report a cross-sectional association of habitual snoring and asthma among pregnant women. If confirmed, pregnant asthmatics may benefit from more vigilant screening and management of OSA or habitual snoring during pregnancy.
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Arousals in obstructive sleep apnea patients with laryngopharyngeal and gastroesophageal reflux. Sleep Med 2010; 11:356-60. [DOI: 10.1016/j.sleep.2009.09.008] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2009] [Revised: 09/07/2009] [Accepted: 09/10/2009] [Indexed: 01/10/2023]
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Prevalence of obstructive sleep apnea-hypopnea in severe versus moderate asthma. J Allergy Clin Immunol 2009; 124:371-6. [PMID: 19560194 DOI: 10.1016/j.jaci.2009.05.016] [Citation(s) in RCA: 146] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2008] [Revised: 05/09/2009] [Accepted: 05/13/2009] [Indexed: 11/23/2022]
Abstract
BACKGROUND Previous studies have suggested a link between obstructive sleep apnea and poor asthma control, which may be mediated through airway inflammation, obesity, and other mechanisms. OBJECTIVE To test the hypothesis that the prevalence and severity of sleep apnea is greater among patients with severe compared with moderate asthma and controls without asthma. METHODS Complete overnight home polysomnography was performed in 26 patients with severe asthma consecutively recruited to a difficult asthma program, 26 patients with moderate asthma, and 26 controls without asthma of similar age and body mass index. Flow rates and Juniper asthma control and quality of life questionnaires were also obtained. RESULTS Obstructive sleep apnea-hypopnea, defined by an Apnea-Hypopnea Index > or = 15 events/h of sleep scored using Chicago criteria, was present in 23 of 26 (88%) patients with severe asthma, 15 of 26 (58%) patients with moderate asthma, and 8 of 26 (31%) controls without asthma (chi(2): P < .001). Using the more restrictive scoring criteria applied in the Wisconsin cohort study, Apnea-Hypopnea Index > or = 5/h was present in 50% (severe), 23% (moderate), and 12% (control) of subjects (P = .007). Mean nocturnal arterial oxygen saturation was significantly lower in patients with severe asthma versus controls, and apnea-hypopnea severity measures were significantly worse for both asthmatic groups compared with controls. Among subjects with asthma, no significant correlations were identified between the severity of sleep-disordered breathing and asthma severity or control measures (FEV(1), Juniper scores). CONCLUSIONS Obstructive sleep apnea-hypopnea was significantly more prevalent among patients with severe compared with moderate asthma, and more prevalent for both asthma groups than controls without asthma. These observations suggest potential pathophysiologic interactions between obstructive sleep apnea-hypopnea and asthma severity and control.
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Teodorescu M, Consens FB, Bria WF, Coffey MJ, McMorris MS, Weatherwax KJ, Palmisano J, Senger CM, Ye Y, Kalbfleisch JD, Chervin RD. Predictors of habitual snoring and obstructive sleep apnea risk in patients with asthma. Chest 2008; 135:1125-1132. [PMID: 18849401 DOI: 10.1378/chest.08-1273] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
BACKGROUND A high prevalence of obstructive sleep apnea (OSA) symptoms was reported in patients with asthma. Our goal was to evaluate factors associated with habitual snoring and OSA risk in these patients. METHODS Patients with asthma were surveyed at specialty clinics with the Sleep Apnea scale of the Sleep Disorders Questionnaire (SA-SDQ) and questions about the frequency of asthma symptoms (National Asthma Education and Prevention Program guidelines), followed by medical record review. SA-SDQ scores >or= 36 for men and >or= 32 for women defined high OSA risk. Logistic regression was used to model associations with habitual snoring and high OSA risk. RESULTS Among 244 patients, 37% snored habitually and 40% demonstrated high OSA risk. Independent predictors of habitual snoring included gastroesophageal reflux disease (GERD) [odds ratio (OR), 2.19; 95% confidence interval (CI), 1.19 to 4.02] and use of an inhaled corticosteroid (ICS) [OR, 2.66; 95% CI, 1.05 to 6.72]. High OSA risk was predicted by asthma severity step (OR, 1.59; 95% CI, 1.23 to 2.06), GERD (OR, 2.70; 95% CI, 1.51 to 4.83), and ICS use (OR, 4.05; 95% CI, 1.56 to 10.53). Linear, dose-dependent relationships of ICS with habitual snoring and high OSA risk were seen (p = 0.004 and p = 0.0006, respectively). Women demonstrated a 2.11 times greater odds for high OSA risk (95% CI, 1.10 to 4.09) when controlling for the above covariates. CONCLUSIONS Symptoms of OSA in patients with asthma are predicted by asthma severity, coexistent GERD, and use of an ICS in a dose-dependent fashion. The well-recognized male gender predominance for OSA symptoms is not apparent in these patients. Further exploration of these relationships may help to explain the increased prevalence of OSA in asthma and provide new insights into the reported female predominance of asthma morbidity.
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Affiliation(s)
- Mihaela Teodorescu
- Department of Medicine and Wisconsin Sleep Institute, University of Wisconsin, Madison, WI; Medical Service and Sleep Disorders Center, William S. Middleton Veterans Hospital, Madison, WI.
| | - Flavia B Consens
- Department of Neurology and Sleep Disorders Center, University of Michigan Health System, Ann Arbor, MI
| | - William F Bria
- Department of Medicine, University of Michigan Health System, Ann Arbor, MI
| | - Michael J Coffey
- Department of Medicine, University of Michigan Health System, Ann Arbor, MI
| | - Marc S McMorris
- Department of Biostatistics, University of Michigan School of Public Health, Ann Arbor, MI
| | - Kevin J Weatherwax
- Michigan Institute for Clinical and Health Research, University of Michigan Health System, Ann Arbor, MI
| | - John Palmisano
- Department of Neurology and Sleep Disorders Center, University of Michigan Health System, Ann Arbor, MI
| | - Carolyn M Senger
- Department of Neurology and Sleep Disorders Center, University of Michigan Health System, Ann Arbor, MI
| | - Yining Ye
- Department of Biostatistics, University of Michigan School of Public Health, Ann Arbor, MI
| | - Jack D Kalbfleisch
- Department of Biostatistics, University of Michigan School of Public Health, Ann Arbor, MI
| | - Ronald D Chervin
- Department of Neurology and Sleep Disorders Center, University of Michigan Health System, Ann Arbor, MI
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Abstract
Inflammatory processes that affect the unified airway can concurrently exert significant influence on the larynx and surrounding mucosal surfaces. Laryngeal inflammation can be present secondary to direct effects of irritants, toxins, and antigens, but can also involve mechanical and infectious effects as well as secondary inflammation from behavioral mechanisms. This review examines laryngeal inflammation in the context of the unified airway and discusses pathophysiologic mechanisms that are central to the development of acute and chronic laryngitis.
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Esteller More E, Huerta Zumel P, Modolell Aguilar I, Segarra Isern F, Matiñó Soler E, Enrique González A, Ademà Alcover JM. Diagnóstico de reflujo gastroesofágico proximal en pacientes con trastornos respiratorios del sueño. ACTA OTORRINOLARINGOLOGICA ESPANOLA 2007. [DOI: 10.1016/s0001-6519(07)74968-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Friedman M, Schalch P, Vidyasagar R, Kakodkar KA, Mazloom N, Joseph NJ. Wireless upper esophageal monitoring for laryngopharyngeal reflux (LPR). Otolaryngol Head Neck Surg 2007; 137:471-6. [PMID: 17765778 DOI: 10.1016/j.otohns.2007.04.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2006] [Revised: 03/26/2007] [Accepted: 04/23/2007] [Indexed: 10/22/2022]
Abstract
OBJECTIVES To confirm feasibility of transnasal placement of a wireless pH-monitoring capsule in the upper esophagus, and to determine the positive predictive value of LPR and GERD signs and symptoms for diagnosis of LPR in patients with OSAHS. STUDY DESIGN Prospective, nonrandomized, IRB-approved study of 89 OSAHS patients with and without symptoms and signs of LPR. METHODS After complete history including QOL survey and fiberoptic laryngoscopy, patients underwent transnasal placement of the pH-monitoring capsule and wireless data collection for 24 hours. RESULTS 77 of 89 consecutive patients underwent successful placement of wireless pH-monitoring capsule (86.5% success rate) and completed the study. 55 (71.4%) OSAHS patients had positive pH studies. 10.4% of these patients reported no symptoms or signs of LPR, indicating occult disease. CONCLUSION Success rates of placement, tolerability, morbidity, and complications are excellent. Wireless upper esophageal pH monitoring is safe and effective for diagnosing LPR in patients with OSAHS.
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Affiliation(s)
- Michael Friedman
- Department of Otolaryngology and Bronchoesophagology, Rush University Medical Center, Chicago, IL, USA.
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44
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Boulet LP, Hamid Q, Bacon SL, Bergeron C, Boulet LP, Chen Y, Dixon AE, Ernst P, Hamid Q, Holguin F, Irvin CG, Kimoff RJ, Komakula S, Laprise C, Lavoie KL, Shore SA, Teodorescu M, Vohl MC. Symposium on obesity and asthma - November 2, 2006. Can Respir J 2007; 14:201-8. [PMID: 17551594 PMCID: PMC2676363 DOI: 10.1155/2007/342618] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Asthma and obesity are frequently associated, and obesity has been considered a factor contributing to both an increase in severity of asthma and to its development. The present document summarizes the proceedings of a symposium held in Montreal, Quebec, on November 2, 2006, under the auspices of the Réseau en santé respiratoire du Fonds de la recherche en santé du Québec in collaboration with the McGill University - Strauss Severe Asthma Program, Université Laval (Quebec City) and Université de Montréal. It includes an overview of the various aspects of the relationships between asthma and obesity with regard to animal models; genetic, hormonal and physiological determinants; influence of comorbidities (eg, sleep apnea syndrome); epidemiology; clinical and psychological features; and management of asthma in the obese population.
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Affiliation(s)
- Louis-Philippe Boulet
- Centre de Pneumologie, Institut universitaire de cardiologie et de pneumologie de l’Université Laval, Hôpital Laval, Québec
- Correspondence and reprints: Dr Louis-Philippe Boulet, Hôpital Laval, 2725, chemin Sainte-Foy, Québec, Québec G1V 4G5. Telephone 418-656-4747, fax 418-656-4762, e-mail
| | - Qutayba Hamid
- Meakins-Christie Laboratories, McGill University, Montreal, Quebec
| | | | | | - Louis-Philippe Boulet
- Correspondence and reprints: Dr Louis-Philippe Boulet, Hôpital Laval, 2725, chemin Sainte-Foy, Québec, Québec G1V 4G5. Telephone 418-656-4747, fax 418-656-4762, e-mail
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45
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Abstract
PURPOSE OF REVIEW Obstructive sleep apnea continues to be a significant public health problem. A variety of imaging modalities have been used recently to gain insight into the pathogenesis of this disease, as well as to identify therapeutic options. RECENT FINDINGS Data from more recent imaging studies have highlighted key findings regarding the anatomic sites of collapse and local tissue factors promoting upper airway compromise. The role of genetics, aging, gender and ethnicity in the development of sleep apnea and the identification of predictors for successful treatment outcomes for sleep-disordered breathing are also reviewed. SUMMARY As our understanding of obstructive sleep apnea evolves, newer imaging techniques and computerized models may be able to further enhance our understanding of the pathogenesis and treatment of this disease.
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Affiliation(s)
- Murtuza M Ahmed
- Division of Pulmonary, Allergy and Critical Care Medicine, Division of Sleep Medicine, Department of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
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46
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Esteller More E, Zumel PH, Aguilar IM, Isern FS, Soler EM, González AE, Ademà Alcover JM. Diagnosis of Proximal Gastro-Oesophageal Reflux in Patients With Rhonchopathy and Sleep Apnoea. ACTA OTORRINOLARINGOLOGICA ESPANOLA 2007. [DOI: 10.1016/s2173-5735(07)70390-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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