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Shang H, Chen D, Deng Q, Ma Z. Influencing factors of delay in seeking medical attention of patients with obstructive sleep apnea based on the Model of Pathways to Treatment in China: a qualitative analysis. Sleep Breath 2024:10.1007/s11325-024-03078-1. [PMID: 38888793 DOI: 10.1007/s11325-024-03078-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 04/05/2024] [Accepted: 06/07/2024] [Indexed: 06/20/2024]
Abstract
BACKGROUND There is the highest estimated number of patients with obstructive sleep apnea (OSA) in China. Early treatment could lead to fewer complications associated with OSA. This study aimed to analyze the factors influencing help-seeking from the first symptom discovery to treatment in OSA. METHODS Semi-structured interview outline was designed to conduct face-to-face interview based on the analyses of a great number of related literatures on the delay in seeking medical attention of patients with OSA. 15 patients diagnosed were interviewed between June 2021 to September 2022 in general hospital of Shenyang, Northeastern of China. Qualitative data was analyzed by content analysis using the Model of Pathways to Treatment. RESULTS Analyses identified factors contributing to elapsed time from first symptom discovery to received treatment that are linked to disease characteristic, patients, health system organization. Appraisal interval is most obvious for patients with OSA, but it is difficult to pinpoint precisely because the patients didn't remember exactly when the first symptom was detected. CONCLUSIONS Patients diagnosed with OSA didn't initially interpret the snore as a warning sign and even thought it was a blessing. The findings provided guidance or avenues for reducing elapsed time between the first symptom and received treatment.
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Affiliation(s)
- Hongyan Shang
- Department of Thoracic Oncology, Hefei Cancer Hospital, Chinese Academy of Sciences, Hefei, 230088, Anhui Province, China
| | - Dandan Chen
- Department of Nursing, Hefei Cancer Hospital, Chinese Academy of Sciences, Hefei, 230088, Anhui Province, China
| | - Qingmei Deng
- Department of Laboratory, Hefei Cancer Hospital, Chinese Academy of Sciences, Hefei, 230088, Anhui Province, China
| | - Zuchang Ma
- Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, Anhui Province, China.
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2
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Mackay SG, Every JD. Advances in Pharyngeal Surgery Over the Past 10 Years: New Techniques and Technology. Otolaryngol Clin North Am 2024; 57:501-510. [PMID: 38521723 DOI: 10.1016/j.otc.2024.02.009] [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: 03/25/2024]
Abstract
This article is a review of advances in pharyngeal surgery over the past 10 years regarding literature, surgical technique, assessment, collaboration, and future direction in the management of adult and pediatric obstructive sleep apnea.
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Affiliation(s)
- Stuart G Mackay
- Department of Otolaryngology, Head and Neck Surgery, The Wollongong Hospital, Wollongong, New South Wales, Australia; School of Medicine, University of Wollongong, Wollongong, New South Wales, Australia; Illawarra ENT Head and Neck Clinic, 8-10 Victoria Street, Wollongong, New South Wales 2500, Australia
| | - James D Every
- Department of Otolaryngology, Head and Neck Surgery, The Wollongong Hospital, Wollongong, New South Wales, Australia; School of Medicine, University of Wollongong, Wollongong, New South Wales, Australia.
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3
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DiCaro MV, Lei K, Yee B, Tak T. The Effects of Obstructive Sleep Apnea on the Cardiovascular System: A Comprehensive Review. J Clin Med 2024; 13:3223. [PMID: 38892933 PMCID: PMC11172971 DOI: 10.3390/jcm13113223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2024] [Revised: 05/23/2024] [Accepted: 05/27/2024] [Indexed: 06/21/2024] Open
Abstract
Obstructive sleep apnea (OSA) is an increasingly relevant cause of cardiovascular morbidity worldwide. Although the association between OSA and the cardiovascular system is well-known, the extent of its effects is still a topic of interest, including pathophysiologic mechanisms, cardiovascular sequelae, and OSA therapies and their effects. Commonly described mechanisms of cardiovascular etiologies revolve around sympathetic activation, inflammation, and intermittent hypoxia resulting from OSA. Ultimately, these effects lead to manifestations in the cardiovascular system, such as arrhythmias, hypertension, and heart failure, among others. The resulting sequelae of OSA may also have differential effects based on gender and age; several studies suggest female gender to have more susceptibility to cardiovascular mortality, as well as an increase in age. Furthermore, several therapies for OSA, both established and emerging, show a reduction in cardiovascular morbidity and may even reduce cardiovascular burden. Namely, the establishment of CPAP has led to improvement in hypertension and cardiac function in patients with heart failure and even reduced the progression of early stages of atherosclerosis. Effective management of OSA decreases abnormal neural sympathetic activity, which results in better rhythm control and blood pressure control, both in waking and sleep cycles. With newer therapies for OSA, its effects on the cardiovascular system may be significantly reduced or even reversed after long-term management. The vast extent of OSA on the cardiovascular system, as well as current and future therapeutic strategies, will be described in detail in this review.
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Affiliation(s)
| | | | | | - Tahir Tak
- Department of Medicine, Kirk Kerkorian School of Medicine at UNLV, Las Vegas, NV 89102, USA; (M.V.D.); (K.L.); (B.Y.)
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4
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Meisgeier A, Dürrschnabel F, Pienkohs S, Weiser A, Neff A. Cephalometric Screening Assessment for Superior Airway Space Narrowing-Added Value of Three-Dimensional Imaging. J Clin Med 2024; 13:2685. [PMID: 38731214 PMCID: PMC11084779 DOI: 10.3390/jcm13092685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2024] [Revised: 04/19/2024] [Accepted: 04/30/2024] [Indexed: 05/13/2024] Open
Abstract
Background: Assessing the morphology of the superior airway space is a crucial diagnostic step in the treatment planning of patients with obstructive sleep apnea syndrome (OSAS) or prior to orthognathic surgery. The aim of this study is to evaluate the necessary scope of a two-dimensional cephalometric assessment and the necessity of three-dimensional imaging in the identification of superior airway space narrowing (SASN). Methods: The computed tomography studies of 100 non-obese, non-OSAS patients were evaluated and analyzed retrospectively. Multiplanar reconstructions were created and underwent cephalometric evaluation. The three-dimensional superior airway morphology was segmented and measured for the minimal cross-sectional area (Amin) and volume (V0). Patients were grouped according to Amin < 80 mm2 and V0 < 12 cm3. Cephalometric parameters (CPs) were analyzed according to Amin and V0 with an unpaired t-test, Pearson correlation, and ROC-curve analysis. Results: The CPs regarding sagittal airway space dimensions (IPAS, MPAS, SPAS) and mandibular body length (GoGn) show the strongest correlation to the three-dimensional minimal cross-sectional area (Amin). The ROC-curve analysis classifying for SASN led to an AUC of 0.86 for IPAS, 0.87 for MPAS, 0.88 for SPAS, and 0.63 for GoGn. Three-dimensional imaging may further improve the diagnostic accuracy in the identification of SASN for IPAS below 13.5 mm, MPAS below 10.2 mm, SPAS below 12.5 mm, and GoGn below 90.2 mm. Conclusions: Two-dimensional cephalometric sagittal airway space diameters and mandibular body length are useful initial screening parameters in the identification of superior airway space narrowing. Nevertheless, as the correlation of two-dimensional cephalometric parameters with three-dimensional upper airway space narrowing is varying and highly dependent on acquisition circumstances, indications for three-dimensional imaging, if possible, in the supine position to evaluate upper airway space morphology should be provided generously, especially in patients with low but normal airway space parameters in two-dimensional cephalometry.
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Affiliation(s)
- Axel Meisgeier
- Department of Oral and Craniomaxillofacial Surgery, UKGM GmbH, University Hospital Marburg, 35043 Marburg, Germany; (F.D.); (S.P.); (A.W.); (A.N.)
- Faculty of Medicine, Philipps University, 35043 Marburg, Germany
| | - Florian Dürrschnabel
- Department of Oral and Craniomaxillofacial Surgery, UKGM GmbH, University Hospital Marburg, 35043 Marburg, Germany; (F.D.); (S.P.); (A.W.); (A.N.)
- Faculty of Medicine, Philipps University, 35043 Marburg, Germany
| | - Simon Pienkohs
- Department of Oral and Craniomaxillofacial Surgery, UKGM GmbH, University Hospital Marburg, 35043 Marburg, Germany; (F.D.); (S.P.); (A.W.); (A.N.)
- Faculty of Medicine, Philipps University, 35043 Marburg, Germany
| | - Annabell Weiser
- Department of Oral and Craniomaxillofacial Surgery, UKGM GmbH, University Hospital Marburg, 35043 Marburg, Germany; (F.D.); (S.P.); (A.W.); (A.N.)
- Faculty of Medicine, Philipps University, 35043 Marburg, Germany
| | - Andreas Neff
- Department of Oral and Craniomaxillofacial Surgery, UKGM GmbH, University Hospital Marburg, 35043 Marburg, Germany; (F.D.); (S.P.); (A.W.); (A.N.)
- Faculty of Medicine, Philipps University, 35043 Marburg, Germany
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Emara TA, Elmonem MSAA, Khaled AM, Genedy HAH, Youssef RS. Anterolateral advancement pharyngoplasty versus barbed reposition pharyngoplasty in patients with obstructive sleep apnea. Eur Arch Otorhinolaryngol 2024; 281:1991-2000. [PMID: 38170209 PMCID: PMC10943148 DOI: 10.1007/s00405-023-08402-1] [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: 10/05/2023] [Accepted: 12/02/2023] [Indexed: 01/05/2024]
Abstract
OBJECTIVES To compare functional outcomes and complication rates of anterolateral advancement pharyngoplasty (ALA) versus barbed reposition pharyngoplasty (BRP) in the treatment of obstructive sleep apnea patients with palatal and lateral pharyngeal wall collapse. STUDY DESIGN Prospective study. SETTING University hospitals. SUBJECTS AND METHODS Forty-six patients were included in this study. Patients were divided into two groups randomly, group 1 (23 cases) underwent anterolateral advancement pharyngoplasty and group 2 (23 cases) underwent barbed relocation pharyngoplasty. According to the following criteria: both sex, age between 18 and 65 years, body mass index ≤ 32 kg/m2, Friedman stage II or III, type I Fujita, nocturnal polysomnography study diagnostic for OSA, retropalatal and lateral pharyngeal wall collapse, diagnosis with flexible nasoendoscopy during a Muller's maneuver based on a 5-point scale and drug-induced sleep endoscopy. Patients who suffered from retroglossal airway collapse were rolled out. RESULTS Apnea-hypopnea index decreased from 27.50 ± 11.56 to 11.22 ± 7.63 (P ≤ .001) in group 1 and from 33.18 ± 10.94 to 12.38 ± 6.77 (P ≤ .001) in group 2. Retropalatal posterior airway space increased from 9.84 ± 1.29 mm to 21.48 ± 2.8 mm (P ≤ .001) in group 1 and increased from 10.26 ± 1.2 mm to 22.86 ± 2.62 mm (P ≤ .001) in group 2. Retropalatal space volume increased from 1.9 ± 0.68 cm3 to 2.75 ± 0.7 cm3 (P ≤ .001) in group 1 and increased from 1.96 ± 0.88 cm3 to 2.82 ± 0.83 cm3 (P ≤ .001) in group 2. Surgical success was 86.95% in group 1 compared to 82.6% in group 2. CONCLUSIONS Both techniques appear to be effective with a high surgical success rate in the treatment of OSA patients with retropalatal and lateral pharyngeal wall collapse.
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Affiliation(s)
| | | | | | - Hisham Ahmed Hasan Genedy
- Faculty of Medicine, Zagazig University, Zagazig, Egypt
- Faculty of Medicine, Beni-Suef University, Beni Suef, Egypt
- Faculty of Medicine, ENT Department, Beni-Suef University, Beni Suef, Egypt
| | - Rabie Sayed Youssef
- Faculty of Medicine, ENT Department, Beni-Suef University, Beni Suef, Egypt.
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6
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Pinczel AJ, Woods CM, Catcheside PG, Woodman RJ, Carney AS, Chai-Coetzer CL, Chia M, Cistulli PA, Hodge JC, Jones A, Lam ME, Lewis R, McArdle N, Ooi EH, Rea SC, Rees G, Singh B, Stow N, Yeo A, Antic N, McEvoy RD, Weaver EM, MacKay SG. Sleep apnea multi-level surgery trial: long-term observational outcomes. Sleep 2024; 47:zsad218. [PMID: 37607039 DOI: 10.1093/sleep/zsad218] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 08/02/2023] [Indexed: 08/24/2023] Open
Abstract
STUDY OBJECTIVES The sleep apnea multi-level surgery (SAMS) randomized clinical trial showed surgery improved outcomes at 6 months compared to ongoing medical management in patients with moderate or severe obstructive sleep apnea (OSA) who failed continuous positive airway pressure therapy. This study reports the long-term outcomes of the multi-level surgery as a case series. METHODS Surgical participants were reassessed >2 years postoperatively with the same outcomes reported in the main SAMS trial. Primary outcomes were apnea-hypopnea index (AHI) and Epworth sleepiness scale (ESS), with secondary outcomes including other polysomnography measures, symptoms, quality of life, and adverse events. Long-term effectiveness (baseline to long-term follow-up [LTFU]) and interval changes (6 month to LTFU) were assessed using mixed effects regression models. Control participants were also reassessed for rate of subsequent surgery and outcomes. RESULTS 36/48 (75%) of surgical participants were reevaluated (mean (standard deviation)) 3.5 (1.0) years following surgery, with 29 undergoing polysomnography. AHI was 41/h (23) at preoperative baseline and 21/h (18) at follow-up, representing persistent improvement of -24/h (95% CI -32, -17; p < 0.001). ESS was 12.3 (3.5) at baseline and 5.5 (3.9) at follow-up, representing persistent improvement of -6.8 (95% CI -8.3, -5.4; p < 0.001). Secondary outcomes were improved long term, and adverse events were minor. Interval change analysis suggests stability of outcomes. 36/43 (84%) of the control participants were reevaluated, with 25 (69%) reporting subsequent surgery, with symptom and quality of life improvements. CONCLUSION Multi-level upper airway surgery improves OSA burden with long-term maintenance of treatment effect in adults with moderate or severe OSA in whom conventional therapy failed. CLINICAL TRIAL Multi-level airway surgery in patients with moderate-severe obstructive sleep apnea (OSA) who have failed medical management to assess change in OSA events and daytime sleepiness; https://www.anzctr.org.au/Trial/Registration/TrialReview.aspx?id=366019&isReview=true; ACTRN12614000338662.
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Affiliation(s)
- Alison J Pinczel
- Adelaide Institute for Sleep Health, FHMRI Sleep Health, Flinders University, Adelaide, SA, Australia
| | - Charmaine M Woods
- Flinders Health and Medical Research Institute, College of Medicine and Public Health, Flinders University, Adelaide, SA, Australia
- Department of Otolaryngology, Head and Neck Surgery, Flinders Medical Centre, Adelaide, SA, Australia
| | - Peter G Catcheside
- Adelaide Institute for Sleep Health, FHMRI Sleep Health, Flinders University, Adelaide, SA, Australia
| | - Richard J Woodman
- Flinders Health and Medical Research Institute, College of Medicine and Public Health, Flinders University, Adelaide, SA, Australia
| | - Andrew Simon Carney
- Adelaide Institute for Sleep Health, FHMRI Sleep Health, Flinders University, Adelaide, SA, Australia
- Flinders Health and Medical Research Institute, College of Medicine and Public Health, Flinders University, Adelaide, SA, Australia
- Southern ENT and Adelaide Sinus Centre, Flinders Private Hospital, Adelaide, SA, Australia
| | - Ching Li Chai-Coetzer
- Adelaide Institute for Sleep Health, FHMRI Sleep Health, Flinders University, Adelaide, SA, Australia
- Respiratory and Sleep Service, Southern Adelaide Local Health Network, Adelaide, SA, Australia
| | - Michael Chia
- Department of Thoracic Medicine, Royal Adelaide Hospital, Adelaide, SA, Australia
| | - Peter A Cistulli
- Charles Perkins Centre, Faculty for Medicine and Health, University of Sydney, Sydney, NSW, Australia
- Department of Respiratory and Sleep Medicine, Royal North Shore Hospital, Sydney, NSW, Australia
| | - John-Charles Hodge
- Ear Nose and Throat Department, Royal Adelaide Hospital, Adelaide, SA, Australia
- ICON Cancer Centre, Adelaide, SA, Australia
- Department of Surgery, University of Adelaide, Adelaide, SA, Australia
| | - Andrew Jones
- Illawarra Shoalhaven Local Health District, Wollongong, NSW, Australia
- Illawarra Sleep Medicine Centre, Wollongong, NSW, Australia
- Graduate School of Medicine, University of Wollongong, Wollongong, NSW, Australia
| | - Matthew E Lam
- Illawarra ENT Head and Neck Clinic, Wollongong, NSW, Australia
| | - Richard Lewis
- Head and Neck Surgery, Hollywood Medical Centre, Perth, WA, Australia
- Department of Otolaryngology, Royal Perth Hospital, Perth, WA, Australia
| | - Nigel McArdle
- West Australian Sleep Disorders Research Institute, Queen Elizabeth II Medical Centre, Perth, WA, Australia
- Department of Pulmonary Physiology and Sleep Medicine, Sir Charles Gairdner Hospital, Perth, WA, Australia
| | - Eng H Ooi
- Flinders Health and Medical Research Institute, College of Medicine and Public Health, Flinders University, Adelaide, SA, Australia
- Department of Otolaryngology, Head and Neck Surgery, Flinders Medical Centre, Adelaide, SA, Australia
- Adelaide ENT Surgery, Flinders Private Hospital, Adelaide, SA, Australia
| | - Siobhan Clare Rea
- West Australian Sleep Disorders Research Institute, Queen Elizabeth II Medical Centre, Perth, WA, Australia
| | - Guy Rees
- ENT Surgeons, Memorial Hospital, North Adelaide, SA, Australia
- Department of Surgery, University of Adelaide, Adelaide, SA, Australia
| | - Bhajan Singh
- West Australian Sleep Disorders Research Institute, Queen Elizabeth II Medical Centre, Perth, WA, Australia
- Department of Pulmonary Physiology and Sleep Medicine, Sir Charles Gairdner Hospital, Perth, WA, Australia
- Faculty of Human Sciences, University of Western Australia, Perth, WA, Australia
| | - Nicholas Stow
- Sydney Centre for Ear, Nose and Throat, Sydney, NSW, Australia
- Sleep Clinic, The Woolcock Clinic, Glebe, NSW, Australia
| | - Aeneas Yeo
- Department of Thoracic Medicine, Royal Adelaide Hospital, Adelaide, SA, Australia
| | - Nick Antic
- Adelaide Institute for Sleep Health, FHMRI Sleep Health, Flinders University, Adelaide, SA, Australia
| | - Ronald Doug McEvoy
- Adelaide Institute for Sleep Health, FHMRI Sleep Health, Flinders University, Adelaide, SA, Australia
- Flinders Health and Medical Research Institute, College of Medicine and Public Health, Flinders University, Adelaide, SA, Australia
| | - Edward M Weaver
- Department of Otolaryngology/Head and Neck Surgery, University of Washington, Seattle, WA, USA
- Surgery Service, Seattle Veterans Affairs Medical Center, Seattle, WA, USA
| | - Stuart G MacKay
- Illawarra Shoalhaven Local Health District, Wollongong, NSW, Australia
- Graduate School of Medicine, University of Wollongong, Wollongong, NSW, Australia
- Illawarra ENT Head and Neck Clinic, Wollongong, NSW, Australia
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Vanderveken OM, Gagnadoux F. Comparative outcomes in obstructive sleep apnea therapy: mean disease alleviation as a more appropriate measure-it's about time. Sleep 2023; 46:zsad210. [PMID: 37549352 PMCID: PMC10566235 DOI: 10.1093/sleep/zsad210] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Indexed: 08/09/2023] Open
Affiliation(s)
- Olivier M Vanderveken
- Department of Otorhinolaryngology, Head and Neck Surgery, Antwerp University Hospital, Edegem, Belgium
- Department of Otorhinolaryngology, Head and Neck Surgery, Translational Neurosciences, Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium
| | - Frédéric Gagnadoux
- Department of Respiratory and Sleep Medicine, Angers University Hospital, Angers, France
- INSERM, CNRS, MITOVASC, Equipe CarME, SFR ICAT, University of Angers, Angers, France
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8
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Every JD, Mackay SG, Sideris AW, Do TQ, Jones A, Weaver EM. Mean disease alleviation between surgery and continuous positive airway pressure in matched adults with obstructive sleep apnea. Sleep 2023; 46:zsad176. [PMID: 37395677 DOI: 10.1093/sleep/zsad176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Revised: 05/19/2023] [Indexed: 07/04/2023] Open
Abstract
STUDY OBJECTIVES Polysomnography parameters measure treatment efficacy for obstructive sleep apnea (OSA), such as reduction in apnea-hypopnea index (AHI). However, for continuous positive airway pressure (CPAP) therapy, polysomnography measures do not factor in adherence and thus do not measure effectiveness. Mean disease alleviation (MDA) corrects polysomnography measures for CPAP adherence and was used to compare treatment effectiveness between CPAP and multilevel upper airway surgery. METHODS This retrospective cohort study consisted of a consecutive sample of 331 patients with OSA managed with multilevel airway surgery as second-line treatment (N = 97) or CPAP (N = 234). Therapeutic effectiveness (MDA as % change or as corrected change in AHI) was calculated as the product of therapeutic efficacy (% or absolute change in AHI) and adherence (% time on CPAP of average nightly sleep). Cardinality and propensity score matching was utilized to manage confounding variables. RESULTS Surgery patients achieved greater MDA % than CPAP users (67 ± 30% vs. 60 ± 28%, p = 0.04, difference 7 ± 3%, 95% confidence interval 4% to 14%) in an unmatched comparison, despite a lower therapeutic efficacy seen with surgery. Cardinality matching demonstrated comparable MDA % in surgery (64%) and CPAP (57%) groups (p = 0.14, difference 8 ± 5%, 95% confidence interval -18% to 3%). MDA measured as corrected change in AHI showed similar results. CONCLUSIONS In adult patients with OSA, multilevel upper airway surgery and CPAP provide comparable therapeutic effectiveness on polysomnography. For patients with inadequate CPAP use, surgery should be considered.
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Affiliation(s)
- James D Every
- Department of Otolaryngology, Head and Neck Surgery, The Wollongong Hospital, Wollongong, NSW. Australia
| | - Stuart G Mackay
- Department of Otolaryngology, Head and Neck Surgery, The Wollongong Hospital, Wollongong, NSW. Australia
- Illawarra ENT Head and Neck Clinic, Wollongong, NSW, Australia
- School of Medicine, University of Wollongong, Wollongong, NSW, Australia
| | - Anders W Sideris
- Department of Otolaryngology, Head and Neck Surgery, The Wollongong Hospital, Wollongong, NSW. Australia
| | - Timothy Q Do
- Department of Otolaryngology, Head and Neck Surgery, The Wollongong Hospital, Wollongong, NSW. Australia
| | - Andrew Jones
- Department of Respiratory Medicine, The Wollongong Hospital, Wollongong, NSW. Australia
- School of Medicine, University of Wollongong, Wollongong, NSW, Australia
| | - Edward M Weaver
- Department of Otolaryngology, University of Washington, Seattle, Washington, USA
- Surgery Service, Seattle Veterans Affairs Medical Center, Seattle, Washington, USA
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9
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Lisan Q, Baudouin R, Lechien JR, Hans S, Blumen M. Is drug-induced sleep endoscopy associated with better outcomes after soft tissue surgery for sleep apnea? A systematic review and meta-analysis. Clin Otolaryngol 2023; 48:122-129. [PMID: 36383205 DOI: 10.1111/coa.14008] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 09/24/2022] [Accepted: 11/13/2022] [Indexed: 11/17/2022]
Abstract
OBJECTIVES The aim was to estimate the effect of drug-induced sleep endoscopy (DISE) on surgical outcomes after soft tissue surgery for obstructive sleep apnea (OSA). DESIGN AND SETTING Systematic review and meta-analysis. PARTICIPANTS Adult patients with OSA and candidates for soft tissue surgery, with and without preoperative DISE, were included. MAIN OUTCOMES MEASURES A systematic literature search of Medline, Web of Science, and Cochrane databases was performed from inception to December 31, 2021. Studies directly comparing patients with and without preoperative DISE were included. Success rate, change in apnea-hypopnea index (AHI), change in minimum SpO2 and change in Epworth Sleepiness Scale (ESS) score were extracted. Random-effect models were used to pool estimates. RESULTS Seven out of 619 articles were included, representing 791 patients (389 in the DISE group and 402 in the no DISE group). DISE was neither associated with a higher success rate (pooled OR 1.34, 95% CI 0.69-2.59, p = 0.39) after soft tissue surgery for OSA, nor a significant change in AHI (-4.69 events/hour, 95% CI -11.10 to 1.72, p = 0.15), minimal SpO2 (mean increase of 2.02%, 95% CI -0.26 to 4.29, p = 0.08) and ESS (mean difference of 1.29, 95% CI -0.48 to 3.05, p = 0.15) when compared to patients without preoperative DISE. CONCLUSIONS Soft tissue surgery does not give better results after DISE compared to when DISE is not performed. However, given the overall low level of evidence of included studies, future well-conducted studies should confirm or overturn these results and clarify the added value of DISE.
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Affiliation(s)
- Quentin Lisan
- Department of Head and Neck surgery, Foch Hospital, Suresnes, France
| | - Robin Baudouin
- Department of Head and Neck surgery, Foch Hospital, Suresnes, France
| | - Jérôme R Lechien
- Department of Head and Neck surgery, Foch Hospital, Suresnes, France.,Department of Otolaryngology, Elsan Hospital, Paris, France
| | - Stéphane Hans
- Department of Head and Neck surgery, Foch Hospital, Suresnes, France
| | - Marc Blumen
- Department of Head and Neck surgery, Foch Hospital, Suresnes, France
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10
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Sarkis LM, Jones AC, Ng A, Pantin C, Appleton SL, MacKay SG. Australasian Sleep Association position statement on consensus and evidence based treatment for primary snoring. Respirology 2023; 28:110-119. [PMID: 36617387 PMCID: PMC10108143 DOI: 10.1111/resp.14443] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Accepted: 12/11/2022] [Indexed: 01/09/2023]
Abstract
Primary snoring impacts a significant portion of the adult population and has the potential to significantly impair quality of life. The purpose of these guidelines is to provide evidence-based recommendations to assist Australasian practitioners in the management of adult patients who present with primary snoring without significant obstructive sleep apnoea. The Timetable, Methodology and Standards by which this Position Statement has been established is outlined in the Appendix S1. The main recommendations are: Weight loss, and reduced alcohol consumption should be recommended, where appropriate If clinical judgement dictates, benzodiazepine and opioid reduction or avoidance may be advised Positional therapy should be considered in supine dominant snorers In dentate patients, Mandibular advancement devices (MAD) should be recommended as a first line treatment following assessment by both an appropriate Dentist and Sleep physician Continuous positive airway pressure (CPAP) devices may be recommended in patients with primary snoring in those already committed to their use or willing to try Surgical treatment of primary snoring by an appropriately credentialled surgeon may be advised and includes nasal (adjunctive), palatal and other interventions This position statement has been designed based on the best available current evidence and our combined expert clinical experience to facilitate the management of patients who present with primary snoring. It provides clinicians with a series of both non-surgical and surgical options with the aim of achieving optimal symptom control and patient outcomes. This is the first such set of recommendations to be established within Australasia and has also been reviewed and endorsed by the Australasian Sleep Association.
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Affiliation(s)
- Leba M Sarkis
- Otolaryngology Head and Neck Surgery Department, The Wollongong Hospital, Wollongong, New South Wales, Australia.,Sydney Medical School, Faculty of Medicine and Health, University of Sydney, Sydney, New South Wales, Australia
| | - Andrew C Jones
- Respiratory and Sleep Medicine Department, The Wollongong Hospital, Wollongong, New South Wales, Australia
| | - Andrew Ng
- Centre for Sleep Disorders & Respiratory Failure St George Hospital, The Lucas Institute NSW, Australia
| | | | - Sarah L Appleton
- Flinders Health and Medical Research Institute- Sleep Health (Adelaide Institute for Sleep Health), College of Medicine of Public Health, Flinders University, Bedford Park, South Australia, Australia
| | - Stuart G MacKay
- Otolaryngology Head and Neck Surgery Department, The Wollongong Hospital, Wollongong, New South Wales, Australia.,School of Medicine, University of Wollongong, New South Wales, Australia
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Hirani R, Smiley A. A Scoping Review of Sleep Apnea: Where Do We Stand? Life (Basel) 2023; 13:life13020387. [PMID: 36836743 PMCID: PMC9961756 DOI: 10.3390/life13020387] [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: 12/08/2022] [Revised: 01/11/2023] [Accepted: 01/28/2023] [Indexed: 02/01/2023] Open
Abstract
Obstructive sleep apnea (OSA), a condition in which there is a recurrent collapse of the upper airway while sleeping, is a widespread disease affecting 5% to 10% people worldwide. Despite several advances in the treatment modalities for OSA, morbidity and mortality remain a concern. Common symptoms include loud snoring, gasping for air during sleep, morning headache, insomnia, hypersomnia, attention deficits, and irritability. Obese individuals, male gender, older age (65+), family history, smoking, and alcohol consumption are well recognized risk factors of OSA. This condition holds the ability to increase inflammatory cytokines, cause metabolic dysfunction, and increase the sympathetic output, all of which exacerbate OSA due to their effect on the cardiovascular system. In this review, we discuss its brief history, risk factors, complications, treatment modalities, and the role of clinicians in curbing its risk.
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Affiliation(s)
- Rahim Hirani
- School of Medicine, New York Medical College, Valhalla, NY 10595, USA
- Department of Surgery, Westchester Medical Center, New York, NY 10595, USA
| | - Abbas Smiley
- School of Medicine, New York Medical College, Valhalla, NY 10595, USA
- Department of Surgery, Westchester Medical Center, New York, NY 10595, USA
- Correspondence:
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12
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30-Day Postoperative Outcomes in Adults with Obstructive Sleep Apnea Undergoing Upper Airway Surgery. J Clin Med 2022; 11:jcm11247371. [PMID: 36555986 PMCID: PMC9783895 DOI: 10.3390/jcm11247371] [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: 10/21/2022] [Revised: 12/07/2022] [Accepted: 12/08/2022] [Indexed: 12/14/2022] Open
Abstract
Background: Obstructive sleep apnea (OSA) is a chronic disorder of the upper airway. OSA surgery has oftentimes been researched based on the outcomes of single-institutional facilities. We retrospectively analyzed a multi-institutional national database to investigate the outcomes of OSA surgery and identify risk factors for complications. Methods: We reviewed the American College of Surgeons National Surgical Quality Improvement Program (NSQIP) database (2008−2020) to identify patients who underwent OSA surgery. The postoperative outcomes of interest included 30-day surgical and medical complications, reoperation, readmission, and mortality. Additionally, we assessed risk-associated factors for complications, including comorbidities and preoperative blood values. Results: The study population included 4662 patients. Obesity (n = 2909; 63%) and hypertension (n = 1435; 31%) were the most frequent comorbidities. While two (0.04%) deaths were reported within the 30-day postoperative period, the total complication rate was 6.3% (n = 292). Increased BMI (p = 0.01), male sex (p = 0.03), history of diabetes (p = 0.002), hypertension requiring treatment (p = 0.03), inpatient setting (p < 0.0001), and American Society of Anesthesiology (ASA) physical status classification scores ≥ 4 (p < 0.0001) were identified as risk-associated factors for any postoperative complications. Increased alkaline phosphatase (ALP) was identified as a risk-associated factor for the occurrence of any complications (p = 0.02) and medical complications (p = 0.001). Conclusions: OSA surgery outcomes were analyzed at the national level, with complications shown to depend on AP levels, male gender, extreme BMI, and diabetes mellitus. While OSA surgery has demonstrated an overall positive safety profile, the implementation of these novel risk-associated variables into the perioperative workflow may further enhance patient care.
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13
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MacKay SG, Jones A. Endotyping in sleep surgery: Not ready for primetime. Respirology 2022; 27:808-809. [DOI: 10.1111/resp.14332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Accepted: 07/11/2022] [Indexed: 11/28/2022]
Affiliation(s)
- Stuart G. MacKay
- Ear Nose and Throat Illawarra ENT Head and Neck Clinic Wollongong New South Wales Australia
- Ear Nose and Throat Surgery University of Wollongong Graduate School of Medicine Wollongong New South Wales Australia
| | - Andrew Jones
- Respiratory and Sleep Medicine Illawarra Sleep Medicine Centre Wollongong New South Wales Australia
- Respiratory and Sleep Medicine University of Wollongong Graduate School of Medicine Wollongong New South Wales Australia
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14
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Schar MS, Omari TI, Woods CM, Cock C, Doeltgen SH, Chai-Coetzer CL, Eckert DJ, Athanasiadis T, Ooi EH. Swallowing biomechanics before and following multi-level upper airway surgery for obstructive sleep apnea. J Clin Sleep Med 2022; 18:1167-1176. [PMID: 34913869 PMCID: PMC8974379 DOI: 10.5664/jcsm.9824] [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: 07/31/2021] [Revised: 11/29/2021] [Accepted: 12/02/2021] [Indexed: 11/13/2022]
Abstract
STUDY OBJECTIVES The effect of contemporary multi-level upper airway surgery for obstructive sleep apnea on swallowing is unclear. This study assessed the biomechanical swallowing function in participants with obstructive sleep apnea pre- and post-modified uvulopalatopharyngoplasty and coblation channeling of the tongue. METHODS In this prospective, longitudinal study, adults diagnosed with moderate-severe obstructive sleep apnea who underwent modified uvulopalatopharyngoplasty and coblation channeling of the tongue surgery had swallowing biomechanics assessed using high-resolution pharyngeal manometry and analyzed with swallowgateway.com. Symptomatic swallowing difficulty was evaluated using the Sydney Swallow Questionnaire (≥ 234). General linear mixed-model analysis was conducted to evaluate the difference pre- and post-modified uvulopalatopharyngoplasty and coblation channeling of the tongue. Data are presented as mean [95% confidence intervals]. RESULTS High-resolution pharyngeal manometry assessments were conducted in 10 participants (7 men; median age 50 [interquartile range 36-65]) preoperatively and repeated postoperatively at 9 months [interquartile range 6-13]. Self-reported dysphagia was unchanged following surgery (Sydney Swallow Questionnaire =149 [53, 447] to 168 [54, 247]; P = .093). High-resolution pharyngeal manometry outcomes indicated reduced mesopharyngeal pressures (148 [135, 161] to 124 [112, 137] mm Hg s cm; P = .011), reduced hypopharyngeal pressures (113 [101, 125] to 93 [84, 102] mm Hg s cm; P = 0.011), and reduced upper esophageal sphincter relaxation pressure (5 [4, 6] to 2 [1,3] mm Hg; P = 0.001) but no change to velopharyngeal pressures (135 [123, 147] to 137 [117, 157] mm Hg s cm; P = .850) postsurgery. CONCLUSIONS Modified uvulopalatopharyngoplasty may have less implications on the swallow mechanism than previously suspected. In contrast, the reduction in mesopharyngeal contractile pressures associated with coblation channeling of the tongue, although within normal limits, may affect bolus propulsion. Biomechanical alterations were insufficient to worsen self-reported swallowing function. CITATION Schar MS, Omari TI, Woods CW, et al. Swallowing biomechanics before and following multi-level upper airway surgery for obstructive sleep apnea. J Clin Sleep Med. 2022;18(4):1167-1176.
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Affiliation(s)
- Mistyka S. Schar
- Department of Speech Pathology, Flinders Medical Centre, South Australia, Australia
- Flinders Health and Medical Research Institute, College of Medicine & Public Health, Flinders University, South Australia, Australia
| | - Taher I. Omari
- Flinders Health and Medical Research Institute, College of Medicine & Public Health, Flinders University, South Australia, Australia
| | - Charmaine M. Woods
- Flinders Health and Medical Research Institute, College of Medicine & Public Health, Flinders University, South Australia, Australia
- Otolaryngology Head & Neck Surgery Unit, Flinders Medical Centre, Adelaide, South Australia, Australia
| | - Charles Cock
- Flinders Health and Medical Research Institute, College of Medicine & Public Health, Flinders University, South Australia, Australia
- Department of Gastroenterology & Hepatology, Flinders Medical Centre, Adelaide, South Australia, Australia
| | - Sebastian H. Doeltgen
- College of Nursing & Health Sciences, Caring Futures Institute, Flinders University Adelaide, South Australia, Australia
| | - Ching Li Chai-Coetzer
- Adelaide Institute for Sleep Health, Flinders University, Adelaide, South Australia, Australia
- Respiratory and Sleep Services, Flinders Medical Centre, Adelaide, South Australia, Australia
| | - Danny J. Eckert
- Adelaide Institute for Sleep Health, Flinders University, Adelaide, South Australia, Australia
| | - Theodore Athanasiadis
- Flinders Health and Medical Research Institute, College of Medicine & Public Health, Flinders University, South Australia, Australia
- Otolaryngology Head & Neck Surgery Unit, Flinders Medical Centre, Adelaide, South Australia, Australia
| | - Eng H. Ooi
- Flinders Health and Medical Research Institute, College of Medicine & Public Health, Flinders University, South Australia, Australia
- Otolaryngology Head & Neck Surgery Unit, Flinders Medical Centre, Adelaide, South Australia, Australia
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15
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Krishnan S, Chai-Coetzer CL, Grivell N, Lovato N, Mukherjee S, Vakulin A, Adams RJ, Appleton SL. Comorbidities and quality of life in Australian men and women with diagnosed and undiagnosed high risk obstructive sleep apnea. J Clin Sleep Med 2022; 18:1757-1767. [PMID: 35332868 DOI: 10.5664/jcsm.9972] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
STUDY OBJECTIVES In a population-based survey, we determined sex-differences in health profiles and quality of life between individuals who have a confirmed diagnosis of obstructive sleep apnea (OSA) and those who are at high risk of OSA yet remain undiagnosed. METHODS An online survey of Australian adults ≥18 years (n= 3818) identified participants with self-reported diagnosed OSA (n=460) or high risk, undiagnosed OSA (OSA50 score ≥5, n=1015). Ever-diagnosed comorbidities, sociodemographic and quality of life (EQ-5D-5L, Functional Outcomes of Sleep Questionnaire-10) were assessed. RESULTS Females were more frequently represented in the high OSA risk group compared to diagnosed OSA (55.5%, n=563 cf 43%, n=198) p<0.001. In sex-specific logistic regression analyses, diagnosed OSA was associated with increased likelihoods of ≥1 cardiovascular condition (odds ratio:3.0, 95% CI:2.0-4.5), hypertension (1.9, 1.3-2.8), gout (1.8, 1.1-2.9) and COPD (3.8, 2.1-6.9) in males. In females an association with asthma (2.0, 1.3-3.0) was seen. Diabetes, arthritis, mental health conditions (ever-diagnosed) and all EQ-5D-5L dimensions were associated with an OSA diagnosis regardless of sex with the exception of EQ-5D-5L anxiety/depression which was only associated with an OSA diagnosis in females. A diagnosis of OSA was associated with sleepiness related impairment (lowest quartile of FOSQ-10) in males (1.6, 1.01-2.5) and females (2.2, 1.4-3.6). CONCLUSIONS Sex-specific health conditions may drive diagnosis of OSA however a clinical suspicion of OSA needs to be increased in men and women. The impaired quality of life and persistent sleepiness in participants with diagnosed OSA observed at a population level requires greater clinical attention.
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Affiliation(s)
- Sowmya Krishnan
- Respiratory and Sleep Services, Southern Adelaide Local Health Network, Adelaide, South Australia, Australia
| | - Ching Li Chai-Coetzer
- Respiratory and Sleep Services, Southern Adelaide Local Health Network, Adelaide, South Australia, Australia.,Flinders Health and Medical Research Institute-Sleep Health (Adelaide Institute for Sleep Health), College of Medicine and Public Health, Flinders University, Bedford Park, South Australia, Australia
| | - Nicole Grivell
- Flinders Health and Medical Research Institute-Sleep Health (Adelaide Institute for Sleep Health), College of Medicine and Public Health, Flinders University, Bedford Park, South Australia, Australia
| | - Nicole Lovato
- Flinders Health and Medical Research Institute-Sleep Health (Adelaide Institute for Sleep Health), College of Medicine and Public Health, Flinders University, Bedford Park, South Australia, Australia
| | - Sutapa Mukherjee
- Respiratory and Sleep Services, Southern Adelaide Local Health Network, Adelaide, South Australia, Australia.,Flinders Health and Medical Research Institute-Sleep Health (Adelaide Institute for Sleep Health), College of Medicine and Public Health, Flinders University, Bedford Park, South Australia, Australia
| | - Andrew Vakulin
- Flinders Health and Medical Research Institute-Sleep Health (Adelaide Institute for Sleep Health), College of Medicine and Public Health, Flinders University, Bedford Park, South Australia, Australia
| | - Robert J Adams
- Respiratory and Sleep Services, Southern Adelaide Local Health Network, Adelaide, South Australia, Australia.,Flinders Health and Medical Research Institute-Sleep Health (Adelaide Institute for Sleep Health), College of Medicine and Public Health, Flinders University, Bedford Park, South Australia, Australia
| | - Sarah L Appleton
- Flinders Health and Medical Research Institute-Sleep Health (Adelaide Institute for Sleep Health), College of Medicine and Public Health, Flinders University, Bedford Park, South Australia, Australia
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16
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Ainge-Allen HW, Yee BJ, Ip MSM. Contemporary Concise Review 2020: Sleep. Respirology 2021; 26:700-706. [PMID: 34018277 DOI: 10.1111/resp.14084] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 04/30/2021] [Accepted: 05/04/2021] [Indexed: 12/16/2022]
Abstract
Obstructive sleep apnoea (OSA) now affects one-seventh of the world's population. Treatment of even mild OSA can improve daytime sleepiness and quality of life. Recent modifications to uvulopalatopharyngoplasty may make it a more widely applicable treatment option in selected patients with OSA. Diet and exercise have effects on sleep apnoea severity independent of weight loss. Insomnia has become increasingly common during the coronavirus disease 2019 (COVID-19) pandemic.
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Affiliation(s)
- Henry W Ainge-Allen
- Centre for Integrated Research and Understanding of Sleep (CIRUS), Woolcock Institute of Medical Research, University of Sydney, Camperdown, New South Wales, Australia.,Department of Respiratory Medicine, Dubbo Health Service, Dubbo, New South Wales, Australia
| | - Brendon J Yee
- Centre for Integrated Research and Understanding of Sleep (CIRUS), Woolcock Institute of Medical Research, University of Sydney, Camperdown, New South Wales, Australia.,Department of Respiratory and Sleep Medicine, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
| | - Mary S M Ip
- Division of Respiratory and Critical Care Medicine, Department of Medicine, University of Hong Kong, Hong Kong.,Respiratory Division, University of Hong Kong Shenzhen Hospital, Shenzhen, China
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17
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A Phenotypic Approach for Personalised Management of Obstructive Sleep Apnoea. CURRENT OTORHINOLARYNGOLOGY REPORTS 2021. [DOI: 10.1007/s40136-021-00346-6] [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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18
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MacKay SG, Lewis R, McEvoy D, Joosten S, Holt NR. Surgical management of obstructive sleep apnoea: A position statement of the Australasian Sleep Association . Respirology 2020; 25:1292-1308. [PMID: 33190389 PMCID: PMC7839593 DOI: 10.1111/resp.13967] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 09/15/2020] [Accepted: 09/20/2020] [Indexed: 12/11/2022]
Abstract
Surgery for adult obstructive sleep apnoea (OSA) plays a key role in contemporary management paradigms, most frequently as either a second‐line treatment or in a facilitatory capacity. This committee, comprising two sleep surgeons and three sleep physicians, was established to give clarity to that role and expand upon its appropriate use in Australasia. This position statement has been reviewed and approved by the Australasian Sleep Association (ASA) Clinical Committee.
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Affiliation(s)
- Stuart G MacKay
- University of Wollongong, Wollongong, NSW, Australia.,Illawarra ENT Head and Neck Clinic, Wollongong, NSW, Australia.,Department of Otolaryngology Head and Neck Surgery, The Wollongong Hospital, Wollongong, NSW, Australia
| | - Richard Lewis
- Hollywood Medical Centre, Perth, WA, Australia.,Department of Otolaryngology Head and Neck Surgery, Royal Perth Hospital, Perth, WA, Australia
| | - Doug McEvoy
- Adelaide Institute for Sleep Health, College of Medicine and Public Health, Flinders University, Adelaide, SA, Australia.,Respiratory and Sleep Service, Southern Adelaide Local Health Network, Adelaide, SA, Australia
| | - Simon Joosten
- Monash Lung and Sleep, Monash Health, Monash Medical Centre, Melbourne, VIC, Australia.,School of Clinical Sciences, Melbourne, VIC, Australia
| | - Nicolette R Holt
- The Royal Melbourne Hospital, Melbourne, VIC, Australia.,Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
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