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Shimizu Y, Ohshimo S, Saeki N, Oue K, Sasaki U, Imamura S, Kamio H, Imado E, Sadamori T, Tsutsumi YM, Shime N. New acoustic monitoring system quantifying aspiration risk during monitored anaesthesia care. Sci Rep 2023; 13:20196. [PMID: 37980396 PMCID: PMC10657450 DOI: 10.1038/s41598-023-46561-7] [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: 08/24/2023] [Accepted: 11/02/2023] [Indexed: 11/20/2023] Open
Abstract
Respiratory monitoring is crucial during monitored anaesthesia care (MAC) to ensure patient safety. Patients undergoing procedures like gastrointestinal endoscopy and dental interventions under MAC have a heightened risk of aspiration. Despite the risks, no current system or device can evaluate aspiration risk. This study presents a novel acoustic monitoring system designed to detect fluid retention in the upper airway during MAC. We conducted a prospective observational study with 60 participants undergoing dental treatment under MAC. We utilized a prototype acoustic monitoring system to assess fluid retention in the upper airway by analysing inspiratory sounds. Water was introduced intraorally in participants to simulate fluid retention; artificial intelligence (AI) analysed respiratory sounds pre and post-injection. We also compared respiratory sounds pre-treatment and during coughing events. Coughing was observed in 14 patients during MAC, and 31 instances of apnoea were detected by capnography. However, 27 of these cases had breath sounds. Notably, with intraoral water injection, the Stridor Quantitative Value (STQV) significantly increased; furthermore, the STQV was substantially higher immediately post-coughing in patients who coughed during MAC. In summary, the innovative acoustic monitoring system using AI provides accurate evaluations of fluid retention in the upper airway, offering potential to mitigate aspiration risks during MAC.Clinical trial number: jRCTs 062220054.
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Affiliation(s)
- Yoshitaka Shimizu
- Department of Dental Anesthesiology, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-Ku, Hiroshima, 734-8553, Japan.
| | - Shinichiro Ohshimo
- Department of Emergency and Critical Care Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Noboru Saeki
- Department of Anesthesiology and Critical Care, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Kana Oue
- Department of Dental Anesthesiology, Division of Oral & Maxillofacial Surgery and Oral Medicine, Hiroshima University Hospital, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8553, Japan
| | - Utaka Sasaki
- Department of Dental Anesthesiology, Division of Oral & Maxillofacial Surgery and Oral Medicine, Hiroshima University Hospital, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8553, Japan
| | - Serika Imamura
- Department of Dental Anesthesiology, Division of Oral & Maxillofacial Surgery and Oral Medicine, Hiroshima University Hospital, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8553, Japan
| | - Hisanobu Kamio
- Department of Dental Anesthesiology, Division of Oral & Maxillofacial Surgery and Oral Medicine, Hiroshima University Hospital, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8553, Japan
| | - Eiji Imado
- Department of Dental Anesthesiology, Division of Oral & Maxillofacial Surgery and Oral Medicine, Hiroshima University Hospital, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8553, Japan
| | - Takuma Sadamori
- Department of Emergency and Critical Care Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Yasuo M Tsutsumi
- Department of Anesthesiology and Critical Care, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Nobuaki Shime
- Department of Emergency and Critical Care Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
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Bastier PL, Gallet de Santerre O, Bartier S, De Jong A, Trzepizur W, Nouette-Gaulain K, Bironneau V, Blumen M, Chabolle F, de Bonnecaze G, Dufour X, Ameline E, Kérimian M, Latournerie V, Monteyrol PJ, Thiery A, Tronche S, Vergez S, Bequignon E. Guidelines of the French Society of ENT (SFORL): Drug-induced sleep endoscopy in adult obstructive sleep apnea syndrome. Eur Ann Otorhinolaryngol Head Neck Dis 2022; 139:216-225. [PMID: 35871981 DOI: 10.1016/j.anorl.2022.05.003] [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: 11/25/2022]
Abstract
OBJECTIVES To determine the indications, anesthesiological and surgical procedure and interest of drug-induced sleep endoscopy in the treatment of adult obstructive sleep apnea syndrome. DESIGN A redactional committee of 17 experts was set up. Conflicts of interest were disclosed and followed up throughout the process of drawing up the guidelines. The work received no funding from any firm dealing in health products (drugs or devices). The GRADE (Grading of Recommendations Assessment, Development and Evaluation) method was applied to assess the quality of the data on which the guidelines were founded. It was stressed that strong recommendations should not be made on the basis of poor-quality or insufficient data. METHODS The committee studied 29 questions on 5 topics: indications and contraindications, anesthetic technique, surgical technique, interpretation and reporting of results, and management guided by results. RESULTS Expert review and application of the GRADE method led to 30 guidelines: 10 with high level of evidence (Grade 1+ or 1-), 19 with low level (GRADE 2+ or 2-) and 1 expert opinion. CONCLUSION Experts fully agreed on the strong guidelines formalizing the indications and modalities of drug-induced sleep endoscopy for adult obstructive sleep apnea syndrome.
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Affiliation(s)
- P-L Bastier
- Pôle Tête et Cou, Maison de Santé Protestante de Bordeaux-Bagatelle, 203, route de Toulouse, 33401 Talence, France
| | | | - S Bartier
- Service d'ORL et de Chirurgie Cervico-Faciale, Hôpital Henri-Mondor, 1, rue Gustave-Eiffel, 94000 Créteil, France
| | - A De Jong
- Département d'Anesthésie-Réanimation Saint-Éloi, Hôpital Saint-Éloi, 80, avenue Augustin-Fliche, 34090 Montpellier, France
| | - W Trzepizur
- Département de Pneumologie et de Médecine du Sommeil, CHU d'Angers, 4, rue Larrey, 49100 Angers, France
| | - K Nouette-Gaulain
- Service d'Anesthésie-Réanimation, Hôpital Pellegrin, CHU Bordeaux, place Amélie-Raba-Léon, 33700 Bordeaux, France
| | - V Bironneau
- Service de Pneumologie, CHU de Poitiers, 2, rue de la Milétrie, 86021 Poitiers, France
| | - M Blumen
- Centre Médical Veille Sommeil, 59, avenue de Villiers, 75017 Paris, France; Service d'ORL, Hôpital Foch, 40, rue Worth, 92140 Suresnes, France
| | - F Chabolle
- Cabinet d'ORL, 20, rue Parmentier, 92200 Neuilly-sur-Seine, France
| | - G de Bonnecaze
- Service d'ORL et Chirurgie Cervico-Faciale, Hôpital Larrey, 24, chemin de Pouvourville, 31059 Toulouse, France
| | - X Dufour
- Service d'ORL et Chirurgie Cervico-faciale, CHU de Poitiers, 2, rue de la Milétrie, 86000 Poitiers, France
| | - E Ameline
- Cabinet d'ORL, 1, rue des Iris, 41260 La Chaussée-Saint-Victor, France
| | - M Kérimian
- Service d'ORL et de Chirurgie Cervico-Faciale, Hôpital Pellegrin, CHU Bordeaux, place Amélie-Raba-Léon, 33700 Bordeaux, France
| | - V Latournerie
- Service d'ORL, Centre Hospitalier Intercommunal de Créteil, 40, avenue de Verdun, 94000 Créteil, France
| | - P-J Monteyrol
- Nouvelle Clinique Bordeaux Tondu, avenue Jean-Alfonséa, 33270 Floirac, France
| | - A Thiery
- Service d'ORL, Centre Hospitalier Intercommunal de Créteil, 40, avenue de Verdun, 94000 Créteil, France
| | - S Tronche
- SFORL, 26, rue Lalo, 75016 Paris, France
| | - S Vergez
- Service d'ORL et Chirurgie Cervico-Faciale, Hôpital Larrey, 24, chemin de Pouvourville, 31059 Toulouse, France
| | - E Bequignon
- Service d'ORL, Centre Hospitalier Intercommunal de Créteil, 40, avenue de Verdun, 94000 Créteil, France.
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Kazemeini E, Van de Perck E, Dieltjens M, Willemen M, Verbraecken JA, Sands SA, Vanderveken OM, Op de Beeck S. Critical closing pressure (Pcrit) of the pharyngeal airway during routine drug-induced sleep endoscopy: feasibility and protocol. J Appl Physiol (1985) 2022; 132:925-937. [PMID: 35112928 PMCID: PMC8993534 DOI: 10.1152/japplphysiol.00624.2021] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
In obstructive sleep apnea (OSA), there are various pathophysiological factors affecting the upper airway during sleep. Two prominent factors contributing to OSA are site and pattern of upper airway collapse and degree of pharyngeal collapsibility. In a clinical setting, drug-induced sleep endoscopy (DISE) is used to visualize the structures of the upper airway. Critical closing pressure (Pcrit) is the gold standard measure of pharyngeal collapsibility. This prospective clinical study aimed to investigate the feasibility and protocol of Pcrit measurements during DISE. Thirteen patients with OSA were included. Pcrit was calculated using peak inspiratory airflow and inspiratory ventilation. The proposed protocol was successful in Pcrit measurement during DISE in all subjects [median[Q1;Q3] Pcrit for “peak inspiratory method” (n = 12): −0.84[−2.07;0.69] cmH2O, “ventilation method” (n = 13): −1.32[2.32;0.47] cmH2O], highlighting the feasibility of the approach. There was no significant difference (P = 0.67) between calculated Pcrit with either of the calculation methods, indicating high reliability. Correlation analysis showed Pcrit as an independent parameter of any of the anthropometric or polysomnographic parameters. The ventilation method proved to be more successful in assessment of Pcrit in subjects with epiglottic collapse (e.g., with high negative effort dependence). Subjects with palatal complete concentric collapse during DISE had a wide Pcrit range ([−2.86;2.51]cmH2O), suggesting no close correlation between Pcrit and this DISE pattern (P = 0.38). Incorporation of Pcrit measurements into DISE assessments is feasible and may yield valuable additional information for OSA management. Combining Pcrit and DISE provides information on both the site and degree of upper airway collapse and the degree of pharyngeal collapsibility. NEW & NOTEWORTHY The protocol of this study was successful in concomitant measurement of Pcrit during routine clinical endoscopy. Comparison of two calculation methods for Pcrit showed that the inspiratory ventilation method was more successful in assessment of Pcrit in subjects with epiglottic collapse who have high negative effort dependence. Subjects with palatal complete concentric collapse during DISE had a wide Pcrit range and did not have a greater Pcrit than patients in other site of collapse categories.
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Affiliation(s)
- Elahe Kazemeini
- Translational Neurosciences, Faculty of Medicine and Health Sciences, University of Antwerp, Wilrijk, Belgium.,ENT, Head and Neck Surgery, Antwerp University Hospital, Edegem, Belgium
| | - Eli Van de Perck
- Translational Neurosciences, Faculty of Medicine and Health Sciences, University of Antwerp, Wilrijk, Belgium.,ENT, Head and Neck Surgery, Antwerp University Hospital, Edegem, Belgium
| | - Marijke Dieltjens
- Translational Neurosciences, Faculty of Medicine and Health Sciences, University of Antwerp, Wilrijk, Belgium.,ENT, Head and Neck Surgery, Antwerp University Hospital, Edegem, Belgium
| | - Marc Willemen
- Multidisciplinary Sleep Disorders Centre, Antwerp University Hospital, Edegem, Belgium
| | - Johan A Verbraecken
- Laboratory of Experimental Medicine and Pediatrics (LEMP), Faculty of Medicine and Health Sciences, University of Antwerp, Wilrijk, Belgium.,Department of Pulmonology, Antwerp University Hospital, Edegem, Antwerp, Belgium
| | - Scott A Sands
- Division of Sleep and Circadian Disorders, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, United States
| | - Olivier M Vanderveken
- ENT, Head and Neck Surgery, Antwerp University Hospital, Edegem, Belgium.,Multidisciplinary Sleep Disorders Centre, Antwerp University Hospital, Edegem, Belgium
| | - Sara Op de Beeck
- Translational Neurosciences, Faculty of Medicine and Health Sciences, University of Antwerp, Wilrijk, Belgium.,ENT, Head and Neck Surgery, Antwerp University Hospital, Edegem, Belgium.,Multidisciplinary Sleep Disorders Centre, Antwerp University Hospital, Edegem, Belgium
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4
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Baldassari CM, Lam DJ, Ishman SL, Chernobilsky B, Friedman NR, Giordano T, Lawlor C, Mitchell RB, Nardone H, Ruda J, Zalzal H, Deneal A, Dhepyasuwan N, Rosenfeld RM. Expert Consensus Statement: Pediatric Drug-Induced Sleep Endoscopy. Otolaryngol Head Neck Surg 2021; 165:578-591. [PMID: 33400611 DOI: 10.1177/0194599820985000] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
OBJECTIVE To develop an expert consensus statement on pediatric drug-induced sleep endoscopy (DISE) that clarifies controversies and offers opportunities for quality improvement. Pediatric DISE was defined as flexible endoscopy to examine the upper airway of a child with obstructive sleep apnea who is sedated and asleep. METHODS Development group members with expertise in pediatric DISE followed established guidelines for developing consensus statements. A search strategist systematically reviewed the literature, and the best available evidence was used to compose consensus statements regarding DISE in children 0 to 18 years old. Topics with significant practice variation and those that would improve the quality of patient care were prioritized. RESULTS The development group identified 59 candidate consensus statements, based on 50 initial proposed topics, that focused on addressing the following high-yield topics: (1) indications and utility, (2) protocol, (3) optimal sedation, (4) grading and interpretation, (5) complications and safety, and (6) outcomes for DISE-directed surgery. After 2 iterations of the Delphi survey and removal of duplicative statements, 26 statements met the criteria for consensus; 11 statements were designated as no consensus. Several areas, such as the role of DISE at the time of adenotonsillectomy, were identified as needing further research. CONCLUSION Expert consensus was achieved for 26 statements pertaining to indications, protocol, and outcomes for pediatric DISE. Clinicians can use these statements to improve quality of care, inform policy and protocols, and identify areas of uncertainty. Future research, ideally randomized controlled trials, is warranted to address additional controversies related to pediatric DISE.
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Affiliation(s)
- Cristina M Baldassari
- Eastern Virginia Medical School / Children's Hospital of The King's Daughters, Norfolk, Virginia, USA
| | - Derek J Lam
- Oregon Health and Science University, Portland, Oregon, USA
| | - Stacey L Ishman
- Cincinnati Children's Hospital Medical Center / University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | | | - Norman R Friedman
- Children's Hospital Colorado / University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Terri Giordano
- Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Claire Lawlor
- Children's National Medical Center / George Washington University School of Medicine and Health Sciences, Washington, DC, USA
| | | | - Heather Nardone
- Nemours / Alfred I. duPont Hospital for Children, New Castle County, Delaware, USA
| | - James Ruda
- Nationwide Children's Hospital, Columbus, Ohio, USA
| | - Habib Zalzal
- West Virginia University, Morgantown, West Virginia, USA
| | - Adrienne Deneal
- American Academy of Otolaryngology-Head and Neck Surgery Foundation, Alexandria, Virginia, USA
| | - Nui Dhepyasuwan
- American Academy of Otolaryngology-Head and Neck Surgery Foundation, Alexandria, Virginia, USA
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5
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Abstract
PURPOSE OF REVIEW The purpose of this article is to highlight recent advances in the burgeoning field of drug-induced sleep endoscopy (DISE). RECENT FINDINGS One of the first studies to investigate the correlation of DISE findings and natural sleep endoscopy found good agreement in clinically significant obstruction. Previous studies have shown good agreement of DISE findings with the use of different sedative agents implying that the choice of sedative may not be crucial. However, recent studies show variable patterns of collapse, especially at the tongue base, with the use of different sedative agents. A universally accepted classification scheme for drug-induced sleep endoscopy is lacking. A new DISE classification system, termed Palate, Tonsils, Lateral pharyngeal wall, Tongue base, Epiglottis, was introduced this year with the noted advantage of being able to better differentiate between clinically relevant tonsillar and lateral pharyngeal wall collapse. Despite recent advances in the field, there remains no general consensus that DISE findings predict surgical success but may aid in the identification of patients who will respond well to oral appliance therapy. SUMMARY Drug-induced sleep endoscopy is a structure-based evaluation of the upper airway that more closely resembles the natural sleep state compared with awake evaluation.
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6
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Kim JY, Han SC, Lim HJ, Kim HJ, Kim JW, Rhee CS. Drug-Induced Sleep Endoscopy: A Guide for Treatment Selection. SLEEP MEDICINE RESEARCH 2020. [DOI: 10.17241/smr.2020.00584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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7
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Mishima G, Sanuki T, Sato S, Kobayashi M, Kurata S, Ayuse T. Upper-airway collapsibility and compensatory responses under moderate sedation with ketamine, dexmedetomidine, and propofol in healthy volunteers. Physiol Rep 2020; 8:e14439. [PMID: 32441458 PMCID: PMC7243198 DOI: 10.14814/phy2.14439] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 04/04/2020] [Accepted: 04/19/2020] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Ketamine is a potent sedative drug that helps to maintain upper-airway patency, due to its higher upper-airway dilator muscular activity and higher level of duty cycle, as seen in rats. However, no clinical trials have tested passive upper-airway collapsibility and changes in the inspiratory duty cycle against partial upper-airway obstruction in humans. The present study evaluated both the passive mechanical upper-airway collapsibility and compensatory response against acute partial upper-airway obstruction using three different sedative drugs in a crossover trial. METHODS Eight male volunteers entered this nonblinded, randomized crossover study. Upper-airway collapsibility (passive critical closing pressure) and inspiratory duty cycle were measured under moderate sedation with ketamine, propofol, and dexmedetomidine. Propofol, dexmedetomidine, and ketamine anesthesia were induced to obtain adequate, same-level sedation, with a BIS value of 50-70 and the OAA/S score of 2-3 and RASS score of -3. RESULTS The median passive critical closing pressure of 0.08 [-5.51 to 1.20] cm H2 O was not significantly different compared to that of propofol sedation (-0.32 [-1.41 to -0.19] cm H2 O) and of dexmedetomidine sedation (-0.28 [-0.95 to -0.03] cm H2 O) (p = .045). The median passive RUS for ketamine 54.35 [32.00 to 117.50] cm H2 O/L/s was significantly higher than that for propofol 5.50 [2.475 to 19.60] cm H2 O/L/s; (mean difference, 27.50; 95% CI 9.17 to 45.83) (p = .009) and for dexmedetomidine 19.25 [4.125 to 22.05] cm H2 O/L/s; (mean difference, 22.88; 95% CI 4.67 to 41.09) (p = .021). The inspiratory duty cycle increased significantly as the inspiratory airflow decreased in passive conditions for each sedative drug, but behavior differed among the three sedative drugs. CONCLUSION Our findings demonstrate that ketamine sedation may have an advantage of both maintained passive upper-airway collapsibility and a compensatory respiratory response, due to both increase in neuromuscular activity and the increased duty cycle, to acute partial upper-airway obstruction.
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Affiliation(s)
- Gaku Mishima
- Division of Clinical PhysiologyDepartment of Translational Medical SciencesNagasaki University Graduate School of Biomedical SciencesNagasakiJapan
| | - Takuro Sanuki
- Division of Clinical PhysiologyDepartment of Translational Medical SciencesNagasaki University Graduate School of Biomedical SciencesNagasakiJapan
| | - Shuntaro Sato
- Clinical Research CenterNagasaki University HospitalNagasakiJapan
| | - Masato Kobayashi
- Division of Clinical PhysiologyDepartment of Translational Medical SciencesNagasaki University Graduate School of Biomedical SciencesNagasakiJapan
| | - Shinji Kurata
- Department of Dental AnesthesiologyNagasaki University HospitalNagasakiJapan
| | - Takao Ayuse
- Division of Clinical PhysiologyDepartment of Translational Medical SciencesNagasaki University Graduate School of Biomedical SciencesNagasakiJapan
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Carrasco-Llatas M, Matarredona-Quiles S, De Vito A, Chong KB, Vicini C. Drug-Induced Sleep Endoscopy: Technique, Indications, Tips and Pitfalls. Healthcare (Basel) 2019; 7:healthcare7030093. [PMID: 31344900 PMCID: PMC6787696 DOI: 10.3390/healthcare7030093] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 07/09/2019] [Accepted: 07/21/2019] [Indexed: 11/16/2022] Open
Abstract
Drug-induced sleep endoscopy (DISE) is a diagnostic tool to assess the upper airway of snorers and obstructive sleep apnea patients in conditions that mimic natural sleep. Although DISE appears simple and similar to awake endoscopy, there are many aspects that need to be standardized in order to obtain reliable and reproducible information. In this article, we will recommend how to reliably perform DISE, its indications, and how to obtain and interpret the information of the upper airway.
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Affiliation(s)
| | | | - Andrea De Vito
- Department of Otolaryngology; Ospedale Morgagni Pierantoni, 47121 Forli, Italy
| | - Khai Beng Chong
- Department of Otolaryngology; Tan Tock Seng Hospital, Singapore 308433, Singapore
| | - Claudio Vicini
- Department of Otolaryngology; Ospedale Morgagni Pierantoni, 47121 Forli, Italy
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Lechner M, Wilkins D, Kotecha B. A review on drug-induced sedation endoscopy - Technique, grading systems and controversies. Sleep Med Rev 2018; 41:141-148. [PMID: 29627276 DOI: 10.1016/j.smrv.2018.02.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2017] [Revised: 12/19/2017] [Accepted: 02/07/2018] [Indexed: 12/19/2022]
Abstract
Sleep disordered breathing (SDB) comprises a spectrum of disorders, ranging from simple snoring to severe obstructive sleep apnoea (OSA), with a significant burden to health care systems in high income countries. If left untreated, OSA has significant cumulative, long-term health consequences. In the 1990s drug induced sedation endoscopy (DISE) has been developed to become a primary tool in the diagnosis and management of OSA. It allows meticulous endoscopic evaluation of the airway and identifies areas of collapse, thereby informing both on the selection of surgical techniques, where efficacy depends entirely on success at relieving obstruction at a certain level and on the usefulness of conservative measures, such as mandibular advancement splints. This article provides a review of the literature on DISE, covering different grading systems and techniques, explaining different rationales and discussing controversies.
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Affiliation(s)
- Matt Lechner
- Royal National Throat, Nose & Ear Hospital, Gray's Inn Road, London, UK
| | - Dominic Wilkins
- Royal National Throat, Nose & Ear Hospital, Gray's Inn Road, London, UK
| | - Bhik Kotecha
- Royal National Throat, Nose & Ear Hospital, Gray's Inn Road, London, UK.
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10
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The relationship between partial upper-airway obstruction and inter-breath transition period during sleep. Respir Physiol Neurobiol 2017; 244:32-40. [PMID: 28676331 DOI: 10.1016/j.resp.2017.06.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Revised: 06/16/2017] [Accepted: 06/21/2017] [Indexed: 11/27/2022]
Abstract
Short pauses or "transition-periods" at the end of expiration and prior to subsequent inspiration are commonly observed during sleep in humans. However, the role of transition periods in regulating ventilation during physiological challenges such as partial airway obstruction (PAO) has not been investigated. Twenty-nine obstructive sleep apnea patients and eight controls underwent overnight polysomnography with an epiglottic catheter. Sustained-PAO segments (increased epiglottic pressure over ≥5 breaths without increased peak inspiratory flow) and unobstructed reference segments were manually scored during apnea-free non-REM sleep. Nasal pressure data was computationally segmented into inspiratory (TI, shortest period achieving 95% inspiratory volume), expiratory (TE, shortest period achieving 95% expiratory volume), and inter-breath transition period (TTrans, period between TE and subsequent TI). Compared with reference segments, sustained-PAO segments had a mean relative reduction in TTrans (-24.7±17.6%, P<0.001), elevated TI (11.8±10.5%, P<0.001), and a small reduction in TE (-3.9±8.0, P≤0.05). Compensatory increases in inspiratory period during PAO are primarily explained by reduced transition period and not by reduced expiratory period.
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11
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Blumen M, Bequignon E, Chabolle F. Drug-induced sleep endoscopy: A new gold standard for evaluating OSAS? Part I: Technique. Eur Ann Otorhinolaryngol Head Neck Dis 2017; 134:101-107. [DOI: 10.1016/j.anorl.2016.11.005] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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12
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Anttalainen U, Tenhunen M, Rimpilä V, Polo O, Rauhala E, Himanen SL, Saaresranta T. Prolonged partial upper airway obstruction during sleep - an underdiagnosed phenotype of sleep-disordered breathing. Eur Clin Respir J 2016; 3:31806. [PMID: 27608271 PMCID: PMC5015642 DOI: 10.3402/ecrj.v3.31806] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Accepted: 08/10/2016] [Indexed: 12/31/2022] Open
Abstract
Obstructive sleep apnea syndrome (OSAS) is a well-recognized disorder conventionally diagnosed with an elevated apnea-hypopnea index. Prolonged partial upper airway obstruction is a common phenotype of sleep-disordered breathing (SDB), which however is still largely underreported. The major reasons for this are that cyclic breathing pattern coupled with arousals and arterial oxyhemoglobin saturation are easy to detect and considered more important than prolonged episodes of increased respiratory effort with increased levels of carbon dioxide in the absence of cycling breathing pattern and repetitive arousals. There is also a growing body of evidence that prolonged partial obstruction is a clinically significant form of SDB, which is associated with symptoms and co-morbidities which may partially differ from those associated with OSAS. Partial upper airway obstruction is most prevalent in women, and it is treatable with the nasal continuous positive pressure device with good adherence to therapy. This review describes the characteristics of prolonged partial upper airway obstruction during sleep in terms of diagnostics, pathophysiology, clinical presentation, and comorbidity to improve recognition of this phenotype and its timely and appropriate treatment.
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Affiliation(s)
- Ulla Anttalainen
- Division of Medicine, Department of Pulmonary Diseases, Turku University Hospital, Turku, Finland
- Department of Pulmonary Diseases and Clinical Allergology, University of Turku, Turku, Finland
- Sleep Research Centre, Department of Physiology, University of Turku, Turku, Finland;
| | - Mirja Tenhunen
- Department of Clinical Neurophysiology, Medical Imaging Centre and Hospital Pharmacy, Pirkanmaa Hospital District, Tampere University Hospital, Tampere, Finland
- Department of Medical Physics, Medical Imaging Centre and Hospital Pharmacy, Pirkanmaa Hospital District, Tampere University Hospital, Tampere, Finland
| | - Ville Rimpilä
- School of Medicine, University of Tampere, Tampere, Finland
| | - Olli Polo
- Unesta Research Center, Tampere, Finland
- Department of Pulmonary Diseases, Tampere University Hospital, Tampere, Finland
| | - Esa Rauhala
- Department of Clinical Neurophysiology, Satakunta Hospital District, Pori, Finland
| | - Sari-Leena Himanen
- Department of Clinical Neurophysiology, Medical Imaging Centre and Hospital Pharmacy, Pirkanmaa Hospital District, Tampere University Hospital, Tampere, Finland
- School of Medicine, University of Tampere, Tampere, Finland
| | - Tarja Saaresranta
- Division of Medicine, Department of Pulmonary Diseases, Turku University Hospital, Turku, Finland
- Department of Pulmonary Diseases and Clinical Allergology, University of Turku, Turku, Finland
- Sleep Research Centre, Department of Physiology, University of Turku, Turku, Finland
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Pien GW, Keenan BT, Marcus CL, Staley B, Ratcliffe SJ, Jackson NJ, Wieland W, Sun Y, Schwab RJ. An Examination of Methodological Paradigms for Calculating Upper Airway Critical Pressures during Sleep. Sleep 2016; 39:977-87. [PMID: 26951393 PMCID: PMC4835319 DOI: 10.5665/sleep.5736] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Accepted: 01/18/2016] [Indexed: 11/03/2022] Open
Abstract
STUDY OBJECTIVES The goal of this study was to examine different paradigms for determining critical closing pressures (Pcrit). Methods of determining Pcrit were compared, including direct observation of occluded (no flow) breaths versus inferring Pcrit from extrapolated data, and Pcrit generated by aggregating pressure-flow data from multiple runs versus Pcrit averaged across individual pressure-flow runs. The relationship between Pcrit and obstructive sleep apnea (OSA) was examined. METHODS A total of 351 participants with and without OSA underwent overnight polysomnography with pressure-flow measurements to determine Pcrit. A series of filters were applied to raw data to provide consistent, objective criteria for determining which data to include in Pcrit calculations. Observed Pcrit values were computed as the mean nasal pressure level at which a subject had at least two breaths with peak inspiratory flow < 50 mL/sec. Extrapolated Pcrit was calculated in two ways: (1) separately for each individual run and then averaged; and (2) using all valid data from individual runs combined into one plot. RESULTS Observed Pcrit was calculated in 67% to 69% of participants, a similar or higher proportion of study subjects compared to extrapolated Pcrit values using a ± 3 cm H2O filter. Although raw (unfiltered) extrapolated Pcrit measures were able to be calculated among a greater proportion of participants than filtered, extrapolated Pcrit values, and thus had fewer missing values, they had larger variability. Both extrapolated and observed Pcrit were higher among individuals with OSA compared to those without OSA. CONCLUSIONS Observed Pcrit provides a reliable descriptor of hypotonic upper airway collapsibility. Different methods for determining Pcrit were able to distinguish subjects with and without OSA.
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Affiliation(s)
- Grace W. Pien
- Division of Pulmonary and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Brendan T. Keenan
- Center for Sleep and Circadian Neurobiology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA
| | - Carole L. Marcus
- Center for Sleep and Circadian Neurobiology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA
- Sleep Center, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Bethany Staley
- Center for Sleep and Circadian Neurobiology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA
| | - Sarah J. Ratcliffe
- Department of Biostatistics and Epidemiology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA
| | - Nicholas J. Jackson
- Department of Medicine Statistics Core, David Geffen School of Medicine at UCLA, Los Angeles, CA
| | - William Wieland
- Center for Sleep and Circadian Neurobiology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA
| | - Yi Sun
- Center for Sleep and Circadian Neurobiology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA
| | - Richard J. Schwab
- Center for Sleep and Circadian Neurobiology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA
- Sleep Medicine Division and Pulmonary and Critical Care Division, Department of Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA
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Kurata S, Sanuki T, Okayasu I, Kawai M, Moromugi S, Ayuse T. A pilot study of upper airway management using a remote-controlled artificial muscle device during propofol anesthesia. J Clin Anesth 2016; 29:75-82. [PMID: 26897452 DOI: 10.1016/j.jclinane.2015.10.016] [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: 08/29/2014] [Revised: 07/01/2015] [Accepted: 10/29/2015] [Indexed: 10/22/2022]
Abstract
STUDY OBJECTIVE To test the hypothesis that the jaw closure using a pneumatic actuator device affect airway collapsibility and resistance during propofol anesthesia. DESIGN Prospective, randomized study. SETTING University-affiliated hospital. PATIENTS Six male subjects were included in the present study. INTERVENTION We used pressure-flow relationships to evaluate critical closing pressure (PCRIT) and upper airway resistance in different conditions of body and head position. Anesthesia was induced and maintained with a propofol infusion, targeting a constant blood concentration of 1.5 to 2.0μg/mL to establish an adequate depth of anesthesia, with patients breathing spontaneously through a nasal mask. An air-inflatable pneumatic actuator was used to achieve jaw closure. Nasal mask pressure was intermittently reduced to evaluate upper airway collapsibility (passive PCRIT) and upstream resistance under 4 different conditions: (1) neutral occlusion at 0-cm head elevation (baseline), (2) jaw closure at 0-cm head elevation, (3) neutral occlusion at 6-cm head elevation, and (4) jaw closure at 6-cm head elevation. PCRIT and upstream resistance under each condition were compared using 1-way analysis of variance. P<.05 was considered significant. MEASUREMENTS The pressure and inspiratory flow at the subjects' nose mask were recorded. Polysomonographic parameters (electroencephalograms, electrooculograms, submental electromyograms, and plethysmogram) were also recorded. MAIN RESULTS The combination of 6-cm head elevation with jaw closure using the pneumatic actuator decreased upper airway collapsibility (PCRIT≈-3.0 cm H2O) compared to the baseline position (PCRIT≈-1.2 cm H2O; P=.0003). CONCLUSION We demonstrated that jaw closure using an air-inflatable pneumatic actuator device can produce substantial decreases in upper airway collapsibility and maintain upper airway patency during propofol anesthesia.
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Affiliation(s)
- Shinji Kurata
- Department of Dental Anesthesiology, Nagasaki University Hospital, Nagasaki, Japan
| | - Takurou Sanuki
- Department of Clinical Physiology, Nagasaki University Graduate School of Biomedical Science, Nagasaki, Japan
| | - Ichiro Okayasu
- Department of Clinical Physiology, Nagasaki University Graduate School of Biomedical Science, Nagasaki, Japan
| | - Mari Kawai
- Department of Dental Anesthesiology, Nagasaki University Hospital, Nagasaki, Japan
| | - Shunji Moromugi
- Department of Electrical, Electronic, and Communication Engineering, Chuo University, Tokyo, Japan
| | - Takao Ayuse
- Department of Dental Anesthesiology, Nagasaki University Hospital, Nagasaki, Japan; Department of Clinical Physiology, Nagasaki University Graduate School of Biomedical Science, Nagasaki, Japan.
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15
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Drug-induced sedation endoscopy versus clinical exploration for the diagnosis of severe upper airway obstruction in OSAHS patients. Sleep Breath 2015; 19:1367-72. [PMID: 26449550 DOI: 10.1007/s11325-015-1266-z] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Revised: 09/05/2015] [Accepted: 09/21/2015] [Indexed: 10/23/2022]
Abstract
BACKGROUND Identifying the sites of obstruction of the upper airway in patients with obstructive sleep apnea-hypopnea syndrome (OSAHS) is paramount for surgical planning. The aim of this study is to compare wake physical exam findings to the ones obtained during drug-induced sedation endoscopy (DISE) in the diagnosis of severe collapse of the upper airway in OSAHS patients. METHODS A retrospective chart review of OSAHS patients who underwent DISE at our institution during the 2006-2010 period was conducted. All the patients had previously undergone a physical examination that included modified Mallampati index (MMI), the Müller maneuver (MM), and the Friedman staging system. Level and severity of airway collapse were evaluated. A severe collapse was attributed to obstructions equal or greater than 75 % of the airway. RESULTS A total of 138 patients were included in the study. The incidence of severe airway collapse was compared between DISE and MM; at retropalatal level, no significant difference was found. At retrolingual level, 69 % of patients had severe collapse with DISE in comparison to a 28 % with the MM (p < 0.05). No relationship was found either with the MMI or with the Friedman staging system when compared to the incidence of severe retrolingual collapse diagnosed by DISE. Concordance was low between awake and DISE exploration in both retropalatal and retroglossal level. CONCLUSION The Müller maneuver underestimates tongue base severe obstruction diagnosis when compared to that obtained after DISE in OSAHS patients. The wake patient exploration does not accurately correlate to DISE exploration.
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16
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Pham LV, Schwartz AR. The pathogenesis of obstructive sleep apnea. J Thorac Dis 2015; 7:1358-72. [PMID: 26380762 DOI: 10.3978/j.issn.2072-1439.2015.07.28] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2015] [Accepted: 07/17/2015] [Indexed: 12/18/2022]
Abstract
Obstructive sleep apnea (OSA) is a major source of cardiovascular morbidity and mortality, and represents an increasing burden on health care resources. Understanding underlying pathogenic mechanisms of OSA will ultimately allow for the development of rational therapeutic strategies. In this article, we review current concepts about the pathogenesis of OSA. Specifically, we consider the evidence that the upper airway plays a primary role in OSA pathogenesis and provide a framework for modelling its biomechanical properties and propensity to collapse during sleep. Anatomical and neuromuscular factors that modulate upper airway obstruction are also discussed. Finally, we consider models of periodic breathing, and elaborate generalizable mechanisms by which upper airway obstruction destabilizes respiratory patterns during sleep. In our model, upper airway obstruction triggers a mismatch between ventilatory supply and demand. In this model, trade-offs between maintaining sleep stability or ventilation can account for a full range of OSA disease severity and expression. Recurrent arousals and transient increases in airway patency may restore ventilation between periods of sleep, while alterations in neuromuscular and arousal responses to upper airway obstruction may improve sleep stability at still suboptimal levels of ventilation.
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Affiliation(s)
- Luu V Pham
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins Sleep Disorders Center, Johns Hopkins University, Baltimore, Maryland, USA
| | - Alan R Schwartz
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins Sleep Disorders Center, Johns Hopkins University, Baltimore, Maryland, USA
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17
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Biselli P, Grossman PR, Kirkness JP, Patil SP, Smith PL, Schwartz AR, Schneider H. The effect of increased lung volume in chronic obstructive pulmonary disease on upper airway obstruction during sleep. J Appl Physiol (1985) 2015; 119:266-71. [PMID: 26048975 PMCID: PMC4526705 DOI: 10.1152/japplphysiol.00455.2014] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2014] [Accepted: 05/31/2015] [Indexed: 12/18/2022] Open
Abstract
Patients with chronic obstructive pulmonary disease (COPD) exhibit increases in lung volume due to expiratory airflow limitation. Increases in lung volumes may affect upper airway patency and compensatory responses to inspiratory flow limitation (IFL) during sleep. We hypothesized that COPD patients have less collapsible airways inversely proportional to their lung volumes, and that the presence of expiratory airflow limitation limits duty cycle responses to defend ventilation in the presence of IFL. We enrolled 18 COPD patients and 18 controls, matched by age, body mass index, sex, and obstructive sleep apnea disease severity. Sleep studies, including quantitative assessment of airflow at various nasal pressure levels, were conducted to determine upper airway mechanical properties [passive critical closing pressure (Pcrit)] and for quantifying respiratory timing responses to experimentally induced IFL. COPD patients had lower passive Pcrit than their matched controls (COPD: -2.8 ± 0.9 cmH2O; controls: -0.5 ± 0.5 cmH2O, P = 0.03), and there was an inverse relationship of subject's functional residual capacity and passive Pcrit (-1.7 cmH2O/l increase in functional residual capacity, r(2) = 0.27, P = 0.002). In response to IFL, inspiratory duty cycle increased more (P = 0.03) in COPD patients (0.40 to 0.54) than in controls (0.41 to 0.51) and led to a marked reduction in expiratory time from 2.5 to 1.5 s (P < 0.01). COPD patients have a less collapsible airway and a greater, not reduced, compensatory timing response during upper airway obstruction. While these timing responses may reduce hypoventilation, it may also increase the risk for developing dynamic hyperinflation due to a marked reduction in expiratory time.
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Affiliation(s)
- Paolo Biselli
- Johns Hopkins Sleep Disorders Center, Division of Pulmonary and Critical Care Medicine, Johns Hopkins Asthma and Allergy Center, Baltimore, Maryland; and Hospital Universitário, University of Sao Paulo, São Paulo, Brazil
| | - Peter R Grossman
- Johns Hopkins Sleep Disorders Center, Division of Pulmonary and Critical Care Medicine, Johns Hopkins Asthma and Allergy Center, Baltimore, Maryland; and
| | - Jason P Kirkness
- Johns Hopkins Sleep Disorders Center, Division of Pulmonary and Critical Care Medicine, Johns Hopkins Asthma and Allergy Center, Baltimore, Maryland; and
| | - Susheel P Patil
- Johns Hopkins Sleep Disorders Center, Division of Pulmonary and Critical Care Medicine, Johns Hopkins Asthma and Allergy Center, Baltimore, Maryland; and
| | - Philip L Smith
- Johns Hopkins Sleep Disorders Center, Division of Pulmonary and Critical Care Medicine, Johns Hopkins Asthma and Allergy Center, Baltimore, Maryland; and
| | - Alan R Schwartz
- Johns Hopkins Sleep Disorders Center, Division of Pulmonary and Critical Care Medicine, Johns Hopkins Asthma and Allergy Center, Baltimore, Maryland; and
| | - Hartmut Schneider
- Johns Hopkins Sleep Disorders Center, Division of Pulmonary and Critical Care Medicine, Johns Hopkins Asthma and Allergy Center, Baltimore, Maryland; and
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18
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Ehsan Z, Mahmoud M, Shott SR, Amin RS, Ishman SL. The effects of Anesthesia and opioids on the upper airway: A systematic review. Laryngoscope 2015. [DOI: 10.1002/lary.25399] [Citation(s) in RCA: 112] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
| | - Mohamed Mahmoud
- Division of Anesthesia
- Department of Anesthesiology; University of Cincinnati College of Medicine
| | - Sally R. Shott
- Division of Pediatric Otolaryngology-Head & Neck Surgery; Cincinnati Children's Hospital Medical Center
- Department of Otolaryngology Head & Neck Surgery; University of Cincinnati; Cincinnati Ohio U.S.A
| | - Raouf S. Amin
- Division Pulmonary Medicine
- Department of Otolaryngology Head & Neck Surgery; University of Cincinnati; Cincinnati Ohio U.S.A
| | - Stacey L. Ishman
- Division Pulmonary Medicine
- Division of Pediatric Otolaryngology-Head & Neck Surgery; Cincinnati Children's Hospital Medical Center
- Department of Otolaryngology Head & Neck Surgery; University of Cincinnati; Cincinnati Ohio U.S.A
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19
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Ishizaka S, Moromugi S, Kobayashi M, Kajihara H, Koga K, Sugahara H, Ishimatsu T, Kurata S, Kirkness JP, Oi K, Ayuse T. A Remote-Controlled Airbag Device Can Improve Upper Airway Collapsibility by Producing Head Elevation With Jaw Closure in Normal Subjects Under Propofol Anesthesia. IEEE JOURNAL OF TRANSLATIONAL ENGINEERING IN HEALTH AND MEDICINE-JTEHM 2014; 2:2600109. [PMID: 27170881 PMCID: PMC4848060 DOI: 10.1109/jtehm.2014.2321062] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/16/2014] [Revised: 03/27/2014] [Accepted: 03/28/2014] [Indexed: 11/26/2022]
Abstract
Continuous maintenance of an appropriate position of the mandible and head purely by manual manipulation is difficult, although the maneuver can restore airway patency during sleep and anesthesia. The aim of this paper was to examine the effect of head elevation with jaw closure using a remote-controlled airbag device, such as the airbag system, on passive upper airway collapsibility during propofol anesthesia. Seven male subjects were studied. Propofol infusion was used for anesthesia induction and maintenance, with a target blood propofol concentration of 1.5–2 \documentclass[12pt]{minimal}
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}{}\({R}_{_{\text {US}}}\)
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\end{document} was considered significant. We also confirmed the effects of our airbag device on improvement of upper airway collapsibility in three obstructive sleep apnea patients in a clinical study. The combination of 6-cm head elevation with jaw closure using the air-inflatable robotic airbag system decreased upper airway collapsibility (\documentclass[12pt]{minimal}
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}{}\({P} = 0.0001\)
\end{document}). In the clinical study, there was improvement of upper airway obstruction in sleep apnea patients, including decreased apnea and hypopnea duration and increased the lowest level of oxygen saturation. We demonstrated that establishment of head elevation with jaw closure achieved by a remote-controlled airbag device using an inflatable airbag system can produce substantial decreases in upper airway collapsibility and maintain upper airway patency during propofol anesthesia and sleep.
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De Vito A, Carrasco Llatas M, Vanni A, Bosi M, Braghiroli A, Campanini A, de Vries N, Hamans E, Hohenhorst W, Kotecha BT, Maurer J, Montevecchi F, Piccin O, Sorrenti G, Vanderveken OM, Vicini C. European position paper on drug-induced sedation endoscopy (DISE). Sleep Breath 2014; 18:453-65. [PMID: 24859484 DOI: 10.1007/s11325-014-0989-6] [Citation(s) in RCA: 188] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2014] [Revised: 04/04/2014] [Accepted: 04/22/2014] [Indexed: 10/25/2022]
Abstract
BACKGROUND Although drug-induced sedation endoscopy (DISE) represents the most widespread diagnostic tool for upper airway endoscopic evaluation of snoring and obstructive sleep apnea hypopnea syndrome (OSAHS), many controversies exist about how to perform the sedation, the indications for DISE, and how to report DISE findings. The present position paper reports on a consensus as proposed by a group of European experts in the field of DISE after discussion during a recent dedicated meeting. METHODS The authors have evaluated all the available evidence reported in the literature and have compared experience among various departments in leading European centers in order to provide a standardization of the DISE procedure and an in-depth insight in the main aspects of this technique. RESULTS A proposal of the DISE procedure standardization has been achieved with a general agreement concerning the terminology, indications, contraindications, required preliminary examinations, setting, technical equipment required, staffing, local anesthesia and nasal decongestion, patient positioning, basis and special diagnostic maneuvers, and the applied sedation drugs and observation windows. Otherwise, no consensus has been reached on a scoring and classification system. CONCLUSIONS Although consensus has been reached on several aspects of the DISE procedure, some topics remain open to future research, such as a better analysis of the importance of positional aspects during DISE and a further comparison of the differences in degree, level and pattern of upper airway collapse observed during DISE versus during natural sleep and awake endoscopy. Finally, a universally accepted scoring and classification system is lacking.
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Affiliation(s)
- Andrea De Vito
- Special Surgery Department, Ear-Nose-Throat Unit, Morgagni-Pierantoni Hospital, Via Forlanini 34, 47121, Forlì, Italy
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Carrasco Llatas M, Dalmau Galofre J, Zerpa Zerpa V, Marcano Acuña M, Mompó Romero L. Drug-induced Sleep Videoendoscopy: Clinical Usefulness and Literature Review. ACTA OTORRINOLARINGOLOGICA ESPANOLA 2014. [DOI: 10.1016/j.otoeng.2014.05.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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22
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Stuth EAE, Stucke AG, Zuperku EJ. Effects of anesthetics, sedatives, and opioids on ventilatory control. Compr Physiol 2013; 2:2281-367. [PMID: 23720250 DOI: 10.1002/cphy.c100061] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
This article provides a comprehensive, up to date summary of the effects of volatile, gaseous, and intravenous anesthetics and opioid agonists on ventilatory control. Emphasis is placed on data from human studies. Further mechanistic insights are provided by in vivo and in vitro data from other mammalian species. The focus is on the effects of clinically relevant agonist concentrations and studies using pharmacological, that is, supraclinical agonist concentrations are de-emphasized or excluded.
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Affiliation(s)
- Eckehard A E Stuth
- Medical College of Wisconsin, Anesthesia Research Service, Zablocki VA Medical Center, Milwaukee, Wisconsin, USA.
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23
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[Drug-induced sleep videoendoscopy: clinical usefulness and literature review]. ACTA OTORRINOLARINGOLOGICA ESPANOLA 2013; 65:183-90. [PMID: 24094447 DOI: 10.1016/j.otorri.2013.06.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2013] [Revised: 06/17/2013] [Accepted: 06/20/2013] [Indexed: 11/23/2022]
Abstract
Fiberoptic examination of the pharynx under drug-induced sleep is a test that helps to detect the areas of vibration and collapse in patients with sleep-disordered breathing. This article is a review of the available literature on the subject, aimed at helping otolaryngologists to understand the procedure and to resolve some controversies surrounding it.
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Drug-induced sleep endoscopy: a two drug comparison and simultaneous polysomnography. Eur Arch Otorhinolaryngol 2013; 271:181-7. [PMID: 23665745 DOI: 10.1007/s00405-013-2548-3] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2013] [Accepted: 04/30/2013] [Indexed: 10/26/2022]
Abstract
The purpose of the present study was to compare pharyngeal and polysomnographical findings during drug-induced sleep endoscopy (DISE) performed with either propofol or midazolam as a single sedative agent. It is prospective, non-randomized, double-blinded case series study. Sixteen patients with sleep disordered breathing were sedated first with propofol and after full wake up with midazolam. Simultaneous polysomnography (PSG) was performed. We compared the zones of obstruction and vibration found with both drugs using the VOTE classification. Simultaneous PSG findings are also compared. There were 15 men and one woman; the mean age was 42.7 years old, mean body mass index 26.9 kg/m(2). Average DISE duration was 20 min with Propofol and 14.3 min with Midazolam. The induced sleep stage obtained was N2 with both drugs. Outpatient physical exam did not correlate with drug-induced sleep findings. There was a good correlation between DISE results with both drugs in all the areas of collapse except the velum (p < 0.005). Using a continuous perfusion, there is a good agreement in the findings observed in DISE performed with propofol and midazolam and PSG.
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Bouchard JC, Kim J, Beal DR, Vaickus LJ, Craciun FL, Remick DG. Acute oral ethanol exposure triggers asthma in cockroach allergen-sensitized mice. THE AMERICAN JOURNAL OF PATHOLOGY 2012; 181:845-57. [PMID: 22796441 DOI: 10.1016/j.ajpath.2012.05.020] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 10/28/2011] [Revised: 04/24/2012] [Accepted: 05/22/2012] [Indexed: 11/28/2022]
Abstract
Asthma may be triggered by multiple mediators, including allergen-IgE cross-linking and non-IgE mechanisms. Several clinical studies have shown acute ethanol consumption exacerbates asthma, yet no animal model exists to study this process. We developed a model of ethanol-triggered asthma in allergen-sensitized mice to evaluate the mechanisms of ethanol inducing asthma-like responses. Outbred mice were exposed to cockroach allergens on Days 0 and 14; and on Day 21, mice received ethanol by oral gavage. Tracer studies confirmed alcohol aspiration did not occur. Within 30 minutes, alcohol induced degranulation of over 74% of mast cells, and multiple parameters of asthma-like pulmonary inflammation were triggered. Ethanol-gavaged mice had a fivefold increased production of eotaxin-2 (534 pg/mL) and a sevenfold increase in bronchoalveolar eosinophils (70,080 cells). Ethanol induced a 10-fold increase in IL-13, from 84 pg/mL in sensitized mice to 845 pg/mL in ethanol-gavaged sensitized mice. In cockroach allergen-sensitized mice, ethanol triggered asthma-like changes in respiratory physiology and a significant fivefold increase in airway mucin production. Importantly, none of these asthmatic exacerbations were observed in normal mice gavaged with ethanol. Cromolyn sodium effectively stabilized mast cells, yet increased mucin production and bronchoalveolar eosinophil recruitment. Together, these data show a single oral alcohol exposure will trigger asthma-like pulmonary inflammation in allergen-sensitized mice, providing a novel asthma model.
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Affiliation(s)
- Jacqueline C Bouchard
- Department of Pathology and Laboratory Medicine, Boston University School of Medicine, Massachusetts, USA
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Validation of a measurement to predict upper airway collapsibility during sedation for colonoscopy. J Clin Monit Comput 2012; 26:451-7. [DOI: 10.1007/s10877-012-9374-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2012] [Accepted: 05/21/2012] [Indexed: 01/19/2023]
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Hoshino Y, Ayuse T, Kobayashi M, Kurata S, Kawai M, Schneider H, Patil SP, Schwartz AR, Kirkness JP, Oi K. The effects of hormonal status on upper airway patency in normal female subjects during propofol anesthesia. J Clin Anesth 2012; 23:527-33. [PMID: 22050795 DOI: 10.1016/j.jclinane.2011.02.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2010] [Revised: 02/07/2011] [Accepted: 02/15/2011] [Indexed: 11/29/2022]
Abstract
STUDY OBJECTIVE To determine the mechanical upper airway properties and compensatory neuromuscular responses to obstruction during propofol anesthesia in the follicular and luteal phases of the menstrual cycle. DESIGN Prospective, randomized study. SETTING University-affiliated hospital. SUBJECTS 12 premenopausal female volunteers for studies of upper airway collapse throughout their menstrual cycle during the follicular phase (6 -10 days) and mid-late luteal phase (20 - 24 days). MEASUREMENTS The level of propofol anesthesia (1.5 - 2.0 μg/mL) required to suppress arousal responses was determined by Observer's Assessment of Alertness/Sedation scoring (level 2) and confirmed by bispectral index monitoring. Pressure-flow relationships were constructed to evaluate collapsibility (P(CRIT)) and up-stream resistance (R(US)) during acute [Passive; hypotonic electromyography (EMG)] and sustained (Active; elevated EMG) changes in nasal mask pressure. The difference between passive P(CRIT) and active P(CRIT) (ΔP(CRIT A-P)) represented the magnitude of the compensatory response to obstruction. MAIN RESULTS Passive P(CRIT) was significantly higher in the mid-late luteal phase (-4.7 cm H(2)O) than in the follicular phase (-6.2 cmH(2)O; P < 0.05). Active P(CRIT) significantly decreased compared with passive P(CRIT) in the follicular phase (-10.1 cm H(2)O) and in the mid-late luteal phase (-7.7 cm H(2)O) and (P < 0.05). No significant difference was noted in ΔP(CRIT) between the follicular (3.9 ± 2.9 cm H(2)O) and mid-late luteal phases (3.0 ± 2.6 cm H(2)O). No differences were seen in R(US) between the menstrual phases for either the passive (P = 0.8) or active (P = 0.75) states. CONCLUSIONS Menstrual phase has an effect on anatomical alterations (mechanical properties) in the hypotonic upper airway during propofol anesthesia.
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Affiliation(s)
- Yuko Hoshino
- Department of Clinical Physiology, Nagasaki University Graduate School of Biomedical Science, Nagasaki, 852-8588, Japan
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Chin CH, Kirkness JP, Patil SP, McGinley BM, Smith PL, Schwartz AR, Schneider H. Compensatory responses to upper airway obstruction in obese apneic men and women. J Appl Physiol (1985) 2011; 112:403-10. [PMID: 22096117 DOI: 10.1152/japplphysiol.00021.2011] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Defective structural and neural upper airway properties both play a pivotal role in the pathogenesis of obstructive sleep apnea. A more favorable structural upper airway property [pharyngeal critical pressure under hypotonic conditions (passive Pcrit)] has been documented for women. However, the role of sex-related modulation in compensatory responses to upper airway obstruction (UAO), independent of the passive Pcrit, remains unclear. Obese apneic men and women underwent a standard polysomnography and physiological sleep studies to determine sleep apnea severity, passive Pcrit, and compensatory airflow and respiratory timing responses to prolonged periods of UAO. Sixty-two apneic men and women, pairwise matched by passive Pcrit, exhibited similar sleep apnea disease severity during rapid eye movement (REM) sleep, but women had markedly less severe disease during non-REM (NREM) sleep. By further matching men and women by body mass index and age (n = 24), we found that the lower NREM disease susceptibility in women was associated with an approximately twofold increase in peak inspiratory airflow (P = 0.003) and inspiratory duty cycle (P = 0.017) in response to prolonged periods of UAO and an ∼20% lower minute ventilation during baseline unobstructed breathing (ventilatory demand) (P = 0.027). Thus, during UAO, women compared with men had greater upper airway and respiratory timing responses and a lower ventilatory demand that may account for sex differences in sleep-disordered breathing severity during NREM sleep, independent of upper airway structural properties and sleep apnea severity during REM sleep.
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Affiliation(s)
- Chien-Hung Chin
- Johns Hopkins Sleep Disorders Center, Division of Pulmonary and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore, Maryland 21224, USA
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Effect of head elevation on passive upper airway collapsibility in normal subjects during propofol anesthesia. Anesthesiology 2011; 115:273-81. [PMID: 21701378 DOI: 10.1097/aln.0b013e318223ba6d] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
BACKGROUND Head elevation can restore airway patency during anesthesia, although its effect may be offset by concomitant bite opening or accidental neck flexion. The aim of this study is to examine the effect of head elevation on the passive upper airway collapsibility during propofol anesthesia. METHOD Twenty male subjects were studied, randomized to one of two experimental groups: fixed-jaw or free-jaw. Propofol infusion was used for induction and to maintain blood at a constant target concentration between 1.5 and 2.0 μg/ml. Nasal mask pressure (PN) was intermittently reduced to evaluate the upper airway collapsibility (passive PCRIT) and upstream resistance (RUS) at each level of head elevation (0, 3, 6, and 9 cm). The authors measured the Frankfort plane (head flexion) and the mandible plane (jaw opening) angles at each level of head elevation. Analysis of variance was used to determine the effect of head elevation on PCRIT, head flexion, and jaw opening within each group. RESULTS In both groups the Frankfort plane and mandible plane angles increased with head elevation (P < 0.05), although the mandible plane angle was smaller in the free-jaw group (i.e., increased jaw opening). In the fixed-jaw group, head elevation decreased upper airway collapsibility (PCRIT ~ -7 cm H₂O at greater than 6 cm elevation) compared with the baseline position (PCRIT ~ -3 cm H₂O at 0 cm elevation; P < 0.05). CONCLUSION : Elevating the head position by 6 cm while ensuring mouth closure (centric occlusion) produces substantial decreases in upper airway collapsibility and maintains upper airway patency during anesthesia.
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Kirkness JP, Peterson LA, Squier SB, McGinley BM, Schneider H, Meyer A, Schwartz AR, Smith PL, Patil SP. Performance characteristics of upper airway critical collapsing pressure measurements during sleep. Sleep 2011; 34:459-67. [PMID: 21461324 DOI: 10.1093/sleep/34.4.459] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
OBJECTIVE The critical pressure (P(CRIT)), a measurement of upper airway collapsibility, is a determinant of the severity of upper airway obstruction during sleep. We examined the performance characteristics of the passive and active P(CRIT) by examining both within-night and between-night variability in the measurements. METHODS We studied 54 sleep apnea patients (39 men, 15 women) and 34 normal subjects (20 men, 14 women) on either 1 or 2 nights during sleep. The P(CRIT) was measured during relative hypotonia ("passive" state) or during periods of sustained upper airway obstruction used to recruit upper airway neuromuscular responses ("active" state) within- and between-nights. In a subgroup of 10 normal subjects, we performed repeated measurements during hypnotic-induced sleep. Bland-Altman analyses were used to determine the within-night and between-night reliability of the P(CRIT) measurements. RESULTS There were no significant within-night or between-night differences for the mean passive P(CRIT). The active P(CRIT) was ∼1 cm H(2)O more collapsible on the second night than on the first night. The limits of agreement, which bound the passive and active P(CRIT), was ∼ ± 3 cm H(2)O and was reduced to ∼ ± 1 cm H(2)O for the passive P(CRIT) with hypnotic-induced sleep. CONCLUSION Passive and active P(CRIT) measurements are reasonably reliable within and between nights. An approximately 3 cm H(2)O change in passive or active P(CRIT) appears to represent the minimally significant change in P(CRIT) necessary to assess the effect of an intervention (e.g., positional therapy, surgical interventions, oral appliance effects, and pharmacotherapy) on upper airway mechanical loads or neuromuscular responses.
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Affiliation(s)
- Jason P Kirkness
- Johns Hopkins Sleep Disorders Center, Johns Hopkins School of Medicine, Baltimore, MD 21224, USA.
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Vaickus LJ, Bouchard J, Kim J, Natarajan S, Remick DG. Oral tolerance inhibits pulmonary eosinophilia in a cockroach allergen induced model of asthma: a randomized laboratory study. Respir Res 2010; 11:160. [PMID: 21092270 PMCID: PMC3016351 DOI: 10.1186/1465-9921-11-160] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2010] [Accepted: 11/23/2010] [Indexed: 11/10/2022] Open
Abstract
Background Antigen desensitization through oral tolerance is becoming an increasingly attractive treatment option for allergic diseases. However, the mechanism(s) by which tolerization is achieved remain poorly defined. In this study we endeavored to induce oral tolerance to cockroach allergen (CRA: a complex mixture of insect components) in order to ameliorate asthma-like, allergic pulmonary inflammation. Methods We compared the pulmonary inflammation of mice which had received four CRA feedings prior to intratracheal allergen sensitization and challenge to mice fed PBS on the same time course. Respiratory parameters were assessed by whole body unrestrained plethysmography and mechanical ventilation with forced oscillation. Bronchoalveolar lavage fluid (BAL) and lung homogenate (LH) were assessed for cytokines and chemokines by ELISA. BAL inflammatory cells were also collected and examined by light microscopy. Results CRA feeding prior to allergen sensitization and challenge led to a significant improvement in respiratory health. Airways hyperreactivity measured indirectly via enhanced pause (Penh) was meaningfully reduced in the CRA-fed mice compared to the PBS fed mice (2.3 ± 0.4 vs 3.9 ± 0.6; p = 0.03). Directly measured airways resistance confirmed this trend when comparing the CRA-fed to the PBS-fed animals (2.97 ± 0.98 vs 4.95 ± 1.41). This effect was not due to reduced traditional inflammatory cell chemotactic factors, Th2 or other cytokines and chemokines. The mechanism of improved respiratory health in the tolerized mice was due to significantly reduced eosinophil numbers in the bronchoalveolar lavage fluid (43300 ± 11445 vs 158786 ± 38908; p = 0.007) and eosinophil specific peroxidase activity in the lung homogenate (0.59 ± 0.13 vs 1.19 ± 0.19; p = 0.017). The decreased eosinophilia was likely the result of increased IL-10 in the lung homogenate of the tolerized mice (6320 ± 354 ng/mL vs 5190 ± 404 ng/mL, p = 0.02). Conclusion Our results show that oral tolerization to CRA can improve the respiratory health of experimental mice in a CRA-induced model of asthma-like pulmonary inflammation by reducing pulmonary eosinophilia.
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Affiliation(s)
- Louis J Vaickus
- Boston University School of Medicine, Department of Pathology and Laboratory Medicine, Boston, MA, USA
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Vaickus LJ, Bouchard J, Kim J, Natarajan S, Remick DG. Assessing pulmonary pathology by detailed examination of respiratory function. THE AMERICAN JOURNAL OF PATHOLOGY 2010; 177:1861-9. [PMID: 20724595 PMCID: PMC2947281 DOI: 10.2353/ajpath.2010.100053] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 06/18/2010] [Indexed: 12/12/2022]
Abstract
Pulmonary inflammation causes multiple alterations within the lung, including mucus production, recruitment of inflammatory cells, and airway hyperreactivity (AHR). Measurement of AHR by direct, invasive means (eg, mechanical ventilation) or noninvasive techniques, like whole body plethysmography (WBP), assesses the severity of pulmonary inflammation in animal models of inflammatory lung disease. Direct measurement of AHR is acknowledged as the most accurate method for assessing airway mechanics, but analysis of all data obtained from WBP may offer insights into which inflammatory aspects of the lung are altered along with AHR. Using WBP, we compared the respiratory parameters of two groups of mice sensitized with cockroach allergen. One group was treated with dexamethasone (Dex) before final challenge (Dex-Asthma), while the other group received vehicle treatment (Asthma). Respiratory parameters from plethysmography revealed that Dex-Asthma mice compensated to maintain high minute ventilation, whereas Asthma mice showed significant impairment in minute ventilation despite increased peak expiratory flow (103 ± 5 ml/min vs. 69 ± 70 ml/min). The WBP data suggest that enhanced air exchange in the Dex-Asthma mice results from significant decreases in airway mucus production. Additional studies with quantitative morphometry of histological sections confirmed that Dex reduced airway mucus. In conclusion, a detailed examination of WBP parameters can accurately assess the respiratory health of mice and will help direct additional studies.
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Affiliation(s)
| | | | | | | | - Daniel G. Remick
- Department of Pathology, Boston University School of Medicine, Boston, Massachusetts
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