1
|
Nokes B, Orr JE, White S, Luu S, Chen Z, Alex R, Sands SA, Wojeck BS, Owens RL, Malhotra A, Schmickl CN. The Effect of Obesity on Sleep Apnea Pathogenesis Differs in Women vs Men: Multiple Mediation Analyses in the Retrospective SNOOzzzE Cohort. J Appl Physiol (1985) 2024. [PMID: 38660729 DOI: 10.1152/japplphysiol.00925.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Accepted: 04/16/2024] [Indexed: 04/26/2024] Open
Abstract
BACKGROUND AND OBJECTIVE There are multiple mechanisms underlying obstructive sleep apnea (OSA) development. However, how classic OSA risk factors such as body mass index (BMI) and sex portend to OSA development have not been fully described. Thus, we sought to evaluate how obesity leads to OSA, and assess how these mechanisms differ between men and women. Methods The San Diego Multi-Outcome OSA Endophenotype (SNOOzzzE) cohort includes 3,319 consecutive adults who underwent a clinical in-laboratory polysomnography at the UCSD sleep clinic between 1/2017-12/2019. Using routine polysomnography signals, we determined OSA endotypes. We then performed mediation analyses stratified by sex to determine how BMI influenced apnea hypopnea index (AHI) using OSA endotypic traits as mediators. Results We included 2,146 patients of whom 919 (43%) were women and 1,227 (57%) were obese. BMI was significantly associated with AHI in both women and men. In men, the effect of BMI on AHI was partially mediated by a reduction in upper airway stiffness (31% of total effect, TE), by a reduction in circulatory delay (16%TE), and by an increase in arousal threshold (7%TE). In women, the effect of BMI on AHI was partially mediated by a reduction in circulatory delay (22%TE). Discussion BMI-related OSA pathogenesis differs by sex. An increase in upper airway collapsibility (in men) is consistent with prior studies. A reduction in circulatory delay may lead to shorter and thus more events per hour (i.e., higher AHI), while the association between a higher arousal threshold and higher AHI may reflect reverse causation.
Collapse
Affiliation(s)
- Brandon Nokes
- Division of Pulmonary, Critical Care, Sleep Medicine and Physiology, University of California, San Diego, La jolla, CA, United States
| | - Jeremy E Orr
- Division of Pulmonary, Critical Care, Sleep Medicine and Physiology, University of California San Diego Medical Center, San Diego, CA, United States
| | - Stephanie White
- Division of Pulmonary, Critical Care, Sleep Medicine and Physiology, University of California San Diego Medical Center, San Diego, CA, United States
| | - Steven Luu
- Division of Pulmonary, Critical Care, Sleep Medicine and Physiology, University of California San Diego Medical Center, San Diego, CA, United States
| | - Zihan Chen
- Division of Pulmonary, Critical Care, Sleep Medicine and Physiology, University of California San Diego Medical Center, San Diego, CA, United States
| | - Raichel Alex
- Division of Sleep and Circadian Disorders, Brigham and Women's Hospital, Boston, MA, United States
| | - Scott A Sands
- Division of Sleep and Circadian Disorders, Brigham and Women's Hospital (Boston, Massachusetts, United States), Boston, MA, United States
| | - Brian S Wojeck
- Section of Endocrinology, Yale New Haven Health System, New Haven, CT, United States
| | - Robert L Owens
- Division of Pulmonary, Critical Care, and Sleep Medicine, University of California, San Diego, La Jolla, CA, United States
| | - Atul Malhotra
- Department of Medicine, University of California San Diego Medical Center, La Jolla, CA, United States
| | - Christopher N Schmickl
- Division of Pulmonary, Critical Care, and Sleep Medicine, University of California, San Diego, La Jolla, CALIFORNIA, United States
| |
Collapse
|
2
|
Orr JE, Malhotra A, Gruenberg E, Marin T, Sands SA, Alex RM, Owens RL, Schmickl CN. Pathogenesis of sleep disordered breathing in the setting of opioid use: A multiple mediation analysis using physiology. Sleep 2024:zsae090. [PMID: 38605676 DOI: 10.1093/sleep/zsae090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Indexed: 04/13/2024] Open
Abstract
STUDY OBJECTIVES Opioid medications are commonly used and are known to impact both breathing and sleep, and are linked with adverse health outcomes including death. Clinical data indicate that chronic opioid use causes central sleep apnea, and might also worsen obstructive sleep apnea. The mechanisms by which opioids influence sleep-disordered breathing pathogenesis are not established. METHODS Patients who underwent clinically-indicated polysomnography confirming sleep-disordered breathing (SDB) (AHI≥5/hr) were included. Each patient using opioids was matched by sex, age, and BMI to three control individuals not using opioids. Physiology known to influence SDB pathogenesis were determined from validated polysomnography-based signal analysis. PSG and physiology paramters of interest were compared between opioid and control individuals, adjusted for covariates. Mediation analysis was used to evaluate the link between opioids, physiology, and polysomnographic metrics. RESULTS 178 individuals using opioids were matched to 534 controls (median [IQR] age 59 [50,65] years, BMI 33 [29,41] kg/m2, 57% female, daily morphine equivalent 30 [20,80] mg). Compared with controls, opioids were associated with increased central apneas (2.8 vs 1.7 events/hr; p=0.001) and worsened hypoxemia (5 vs 3% sleep with SpO2<88%; p=0.013), with similar overall AHI. Use of opioids was associated with higher loop gain, a lower respiratory rate and higher respiratory rate variability. Higher loop gain and increased respiratory rate variability mediated the effect of opioids on central apnea, but did not mediate the effect on hypoxemia. CONCLUSIONS Opioids have multi-level effects impacting SDB. Targeting these factors may help mitigate deleterious respiratory consequences of chronic opioid use.
Collapse
Affiliation(s)
- Jeremy E Orr
- Division of Pulmonary, Critical Care, and Sleep Medicine, UC San Diego, La Jolla, CA, USA
| | - Atul Malhotra
- Division of Pulmonary, Critical Care, and Sleep Medicine, UC San Diego, La Jolla, CA, USA
| | - Eli Gruenberg
- Division of Pulmonary, Critical Care, and Sleep Medicine, UC San Diego, La Jolla, CA, USA
| | - Traci Marin
- Division of Pulmonary, Critical Care, and Sleep Medicine, UC San Diego, La Jolla, CA, USA
| | - Scott A Sands
- Division of Sleep and Circadian Disorders, Brigham and Women's Hospital, and Harvard Medical School, Boston, MA, USA
| | - Raichel M Alex
- Division of Sleep and Circadian Disorders, Brigham and Women's Hospital, and Harvard Medical School, Boston, MA, USA
| | - Robert L Owens
- Division of Pulmonary, Critical Care, and Sleep Medicine, UC San Diego, La Jolla, CA, USA
| | - Christopher N Schmickl
- Division of Pulmonary, Critical Care, and Sleep Medicine, UC San Diego, La Jolla, CA, USA
| |
Collapse
|
3
|
Schmickl CN, Orr JE, Sands SA, Alex RM, Azarbarzin A, McGinnis L, White S, Mazzotti DR, Nokes B, Owens RL, Gottlieb DJ, Malhotra A. Loop Gain as a Predictor of Blood Pressure Response in Patients Treated for Obstructive Sleep Apnea: Secondary Analysis of a Clinical Trial. Ann Am Thorac Soc 2024; 21:296-307. [PMID: 37938917 PMCID: PMC10848904 DOI: 10.1513/annalsats.202305-437oc] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Accepted: 11/06/2023] [Indexed: 11/10/2023] Open
Abstract
Rationale: Randomized trials have shown inconsistent cardiovascular benefits from obstructive sleep apnea (OSA) therapy. Intermittent hypoxemia can increase both sympathetic nerve activity and loop gain ("ventilatory instability"), which may thus herald cardiovascular treatment benefit. Objectives: To test the hypothesis that loop gain predicts changes in 24-hour mean blood pressure (MBP) in response to OSA therapy and compare its predictive value against that of other novel biomarkers. Methods: The HeartBEAT (Heart Biomarker Evaluation in Apnea Treatment) trial assessed the effect of 12 weeks of continuous positive airway pressure (CPAP) versus oxygen versus control on 24-hour MBP. We measured loop gain and hypoxic burden from sleep tests and identified subjects with a sleepy phenotype using cluster analysis. Associations between biomarkers and 24-h MBP were assessed in the CPAP/oxygen arms using linear regression models adjusting for various covariates. Secondary outcomes and predictors were analyzed similarly. Results: We included 93 and 94 participants in the CPAP and oxygen arms, respectively. Overall, changes in 24-hour MBP were small, but interindividual variability was substantial (mean [standard deviation], -2 [8] and 1 [8] mm Hg in the CPAP and oxygen arms, respectively). Higher loop gain was significantly associated with greater reductions in 24-hour MBP independent of covariates in the CPAP arm (-1.5 to -1.9 mm Hg per 1-standard-deviation increase in loop gain; P ⩽ 0.03) but not in the oxygen arm. Other biomarkers were not associated with improved cardiovascular outcomes. Conclusions: To our knowledge, this is the first study suggesting that loop gain predicts blood pressure response to CPAP therapy. Eventually, loop gain estimates may facilitate patient selection for research and clinical practice. Clinical trial registered with www.clinicaltrials.gov (NCT01086800).
Collapse
Affiliation(s)
- Christopher N Schmickl
- Division of Pulmonary, Critical Care and Sleep Medicine, University of California, San Diego, San Diego, California
| | - Jeremy E Orr
- Division of Pulmonary, Critical Care and Sleep Medicine, University of California, San Diego, San Diego, California
| | - Scott A Sands
- Division of Sleep and Circadian Disorders, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Raichel M Alex
- Division of Sleep and Circadian Disorders, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Ali Azarbarzin
- Division of Sleep and Circadian Disorders, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Lana McGinnis
- Division of Pulmonary, Critical Care and Sleep Medicine, University of California, San Diego, San Diego, California
| | - Stephanie White
- Division of Pulmonary, Critical Care and Sleep Medicine, University of California, San Diego, San Diego, California
| | - Diego R Mazzotti
- Division of Medical Informatics and
- Division of Pulmonary Critical Care and Sleep Medicine, Department of Internal Medicine, University of Kansas Medical Center, Kansas City, Kansas; and
| | - Brandon Nokes
- Division of Pulmonary, Critical Care and Sleep Medicine, University of California, San Diego, San Diego, California
| | - Robert L Owens
- Division of Pulmonary, Critical Care and Sleep Medicine, University of California, San Diego, San Diego, California
| | - Daniel J Gottlieb
- Division of Sleep and Circadian Disorders, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
- Veterans Affairs Boston Healthcare System, West Roxbury, Massachusetts
| | - Atul Malhotra
- Division of Pulmonary, Critical Care and Sleep Medicine, University of California, San Diego, San Diego, California
| |
Collapse
|
4
|
Orr JE, Chen K, Vaida F, Schmickl CN, Laverty CG, Ravits J, Lesser D, Bhattacharjee R, Malhotra A, Owens RL. Effectiveness of long-term noninvasive ventilation measured by remote monitoring in neuromuscular disease. ERJ Open Res 2023; 9:00163-2023. [PMID: 37753280 PMCID: PMC10518857 DOI: 10.1183/23120541.00163-2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 07/14/2023] [Indexed: 09/28/2023] Open
Abstract
Background and objective Patients with neuromuscular disease are often treated with home noninvasive ventilation (NIV) with devices capable of remote patient monitoring. We sought to determine whether long-term NIV data could provide insight into the effectiveness of ventilation over time. Methods We abstracted available longitudinal data for adults with neuromuscular disease in monthly increments from first available to most recent. Generalised linear mixed-effects modelling with subject-level random effects was used to evaluate trajectories over time. Results 1799 months of data across 85 individuals (median age 61, interquartile range (IQR) 46-71 years; 44% female; 49% amyotrophic lateral sclerosis (ALS)) were analysed, with a median (IQR) of 17 (8-35) months per individual. Over time, tidal volume increased and respiratory rate decreased. Dynamic respiratory system compliance decreased, accompanied by increased pressure support. Compared to volume-assured mode, fixed-pressure modes were associated with lower initial tidal volume, higher respiratory rate and lower pressures, which did not fully equalise with volume-assured mode over time. Compared with non-ALS patients, those with ALS had lower initial pressure support, but faster increases in pressure support over time, and ALS was associated wtih a more robust increase in respiratory rate in response to low tidal volume. Nonsurvivors did not differ from survivors in ventilatory trajectories over time, but did exhibit decreasing NIV use prior to death, in contrast with stable use in survivors. Conclusion NIV keeps breathing patterns stable over time, but support needs are dynamic and influenced by diagnosis and ventilation mode. Mortality is preceded by decreased NIV use rather than inadequate support during use.
Collapse
Affiliation(s)
- Jeremy E. Orr
- Division of Pulmonary, Critical Care, and Sleep Medicine, UC San Diego, San Diego, CA, USA
| | - Kenneth Chen
- Division of Pulmonary, Critical Care, and Sleep Medicine, UC San Diego, San Diego, CA, USA
| | - Florin Vaida
- School of Public Health, UC San Diego, San Diego, CA, USA
| | | | | | - John Ravits
- Department of Neurology, UC San Diego, San Diego, CA, USA
| | - Daniel Lesser
- Department of Pediatrics, UC San Diego, San Diego, CA, USA
| | | | - Atul Malhotra
- Division of Pulmonary, Critical Care, and Sleep Medicine, UC San Diego, San Diego, CA, USA
| | - Robert L. Owens
- Division of Pulmonary, Critical Care, and Sleep Medicine, UC San Diego, San Diego, CA, USA
| |
Collapse
|
5
|
Sonners C, Schmickl CN, Raphelson J, Sykes AV, Roberts EG, Swiatkiewicz I, Malhotra A, Taub PR. The impact of obstructive sleep apnea on exercise capacity in a cardiac rehabilitation program. Sleep Breath 2023; 27:1269-1277. [PMID: 36173506 PMCID: PMC10050218 DOI: 10.1007/s11325-022-02704-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 08/02/2022] [Accepted: 08/30/2022] [Indexed: 10/14/2022]
Abstract
PURPOSE Cardiac rehabilitation (CR) improves clinical outcomes in patients with cardiovascular disease (CDV). Patients with CVD often have multiple comorbidities, including obstructive sleep apnea (OSA), potentially affecting their ability to participate and achieve functional improvement during CR. We aimed to test the hypothesis that OSA reduces peak exercise capacity (EC) in patients undergoing CR and to explore if OSA treatment modifies this relationship. METHODS Data from a retrospective cohort of CR patients was analyzed. OSA was defined as a respiratory event index > 5/h or physician diagnosis. Patients with OSA were considered "treated" if using continuous positive airway pressure regularly during the CR period. Change in METs was the primary study outcome. RESULTS Among 312 CR patients, median age of 67 years, 103 (33%) had known OSA (30 treated, 73 untreated). Patients with OSA vs. those with no OSA were more likely to be obese and male; otherwise, groups were similar. Compared with the no OSA group, patients with OSA had lower pre-CR METs (3.3 [2.9-4.5] vs. 3.9 [3.1-5], P = .01) and lower post-CR METs (5.3 [4-7] vs. 6 [4.6-7.6], P = .04), but achieved a similar increase in METs post-CR (1.8 [0.6-2.6] vs. 2.0 [0.9-3], P = .22). Furthermore, compared to no OSA, pre-CR and post-CR METs tended to be similar in patients with treated OSA, but lower in untreated patients, with similar increases in METs across all groups, even when adjusting for covariates via multivariable regression. CONCLUSION OSA is prevalent in patients with CVD undergoing CR. CR substantially improves exercise capacity independent of OSA status, but screening for-and treatment of-OSA may improve the absolute exercise capacity achieved through CR.
Collapse
Affiliation(s)
- C Sonners
- Department of Cardiology and Internal Medicine, Collegium Medicum Bydgoszcz, Nicolaus Copernicus University, Torun, Poland.
- Internal Medicine, Critical Care, Sleep Medicine and Physiology, Cardiovascular Medicine, UC San Diego, PulmonaryLa Jolla, CA, 92037, USA.
| | - C N Schmickl
- Department of Cardiology and Internal Medicine, Collegium Medicum Bydgoszcz, Nicolaus Copernicus University, Torun, Poland
- Internal Medicine, Critical Care, Sleep Medicine and Physiology, Cardiovascular Medicine, UC San Diego, PulmonaryLa Jolla, CA, 92037, USA
| | - J Raphelson
- Department of Cardiology and Internal Medicine, Collegium Medicum Bydgoszcz, Nicolaus Copernicus University, Torun, Poland
- Internal Medicine, Critical Care, Sleep Medicine and Physiology, Cardiovascular Medicine, UC San Diego, PulmonaryLa Jolla, CA, 92037, USA
| | - A V Sykes
- Department of Cardiology and Internal Medicine, Collegium Medicum Bydgoszcz, Nicolaus Copernicus University, Torun, Poland
- Internal Medicine, Critical Care, Sleep Medicine and Physiology, Cardiovascular Medicine, UC San Diego, PulmonaryLa Jolla, CA, 92037, USA
| | - E G Roberts
- Department of Cardiology and Internal Medicine, Collegium Medicum Bydgoszcz, Nicolaus Copernicus University, Torun, Poland
- Internal Medicine, Critical Care, Sleep Medicine and Physiology, Cardiovascular Medicine, UC San Diego, PulmonaryLa Jolla, CA, 92037, USA
| | - I Swiatkiewicz
- Department of Cardiology and Internal Medicine, Collegium Medicum Bydgoszcz, Nicolaus Copernicus University, Torun, Poland
- Internal Medicine, Critical Care, Sleep Medicine and Physiology, Cardiovascular Medicine, UC San Diego, PulmonaryLa Jolla, CA, 92037, USA
| | - A Malhotra
- Department of Cardiology and Internal Medicine, Collegium Medicum Bydgoszcz, Nicolaus Copernicus University, Torun, Poland
- Internal Medicine, Critical Care, Sleep Medicine and Physiology, Cardiovascular Medicine, UC San Diego, PulmonaryLa Jolla, CA, 92037, USA
| | - P R Taub
- Department of Cardiology and Internal Medicine, Collegium Medicum Bydgoszcz, Nicolaus Copernicus University, Torun, Poland
- Internal Medicine, Critical Care, Sleep Medicine and Physiology, Cardiovascular Medicine, UC San Diego, PulmonaryLa Jolla, CA, 92037, USA
| |
Collapse
|
6
|
Chang JL, Goldberg AN, Alt JA, Alzoubaidi M, Ashbrook L, Auckley D, Ayappa I, Bakhtiar H, Barrera JE, Bartley BL, Billings ME, Boon MS, Bosschieter P, Braverman I, Brodie K, Cabrera-Muffly C, Caesar R, Cahali MB, Cai Y, Cao M, Capasso R, Caples SM, Chahine LM, Chang CP, Chang KW, Chaudhary N, Cheong CSJ, Chowdhuri S, Cistulli PA, Claman D, Collen J, Coughlin KC, Creamer J, Davis EM, Dupuy-McCauley KL, Durr ML, Dutt M, Ali ME, Elkassabany NM, Epstein LJ, Fiala JA, Freedman N, Gill K, Boyd Gillespie M, Golisch L, Gooneratne N, Gottlieb DJ, Green KK, Gulati A, Gurubhagavatula I, Hayward N, Hoff PT, Hoffmann OM, Holfinger SJ, Hsia J, Huntley C, Huoh KC, Huyett P, Inala S, Ishman SL, Jella TK, Jobanputra AM, Johnson AP, Junna MR, Kado JT, Kaffenberger TM, Kapur VK, Kezirian EJ, Khan M, Kirsch DB, Kominsky A, Kryger M, Krystal AD, Kushida CA, Kuzniar TJ, Lam DJ, Lettieri CJ, Lim DC, Lin HC, Liu SY, MacKay SG, Magalang UJ, Malhotra A, Mansukhani MP, Maurer JT, May AM, Mitchell RB, Mokhlesi B, Mullins AE, Nada EM, Naik S, Nokes B, Olson MD, Pack AI, Pang EB, Pang KP, Patil SP, Van de Perck E, Piccirillo JF, Pien GW, Piper AJ, Plawecki A, Quigg M, Ravesloot MJ, Redline S, Rotenberg BW, Ryden A, Sarmiento KF, Sbeih F, Schell AE, Schmickl CN, Schotland HM, Schwab RJ, Seo J, Shah N, Shelgikar AV, Shochat I, Soose RJ, Steele TO, Stephens E, Stepnowsky C, Strohl KP, Sutherland K, Suurna MV, Thaler E, Thapa S, Vanderveken OM, de Vries N, Weaver EM, Weir ID, Wolfe LF, Tucker Woodson B, Won CH, Xu J, Yalamanchi P, Yaremchuk K, Yeghiazarians Y, Yu JL, Zeidler M, Rosen IM. International Consensus Statement on Obstructive Sleep Apnea. Int Forum Allergy Rhinol 2023; 13:1061-1482. [PMID: 36068685 PMCID: PMC10359192 DOI: 10.1002/alr.23079] [Citation(s) in RCA: 34] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 08/12/2022] [Accepted: 08/18/2022] [Indexed: 11/08/2022]
Abstract
BACKGROUND Evaluation and interpretation of the literature on obstructive sleep apnea (OSA) allows for consolidation and determination of the key factors important for clinical management of the adult OSA patient. Toward this goal, an international collaborative of multidisciplinary experts in sleep apnea evaluation and treatment have produced the International Consensus statement on Obstructive Sleep Apnea (ICS:OSA). METHODS Using previously defined methodology, focal topics in OSA were assigned as literature review (LR), evidence-based review (EBR), or evidence-based review with recommendations (EBR-R) formats. Each topic incorporated the available and relevant evidence which was summarized and graded on study quality. Each topic and section underwent iterative review and the ICS:OSA was created and reviewed by all authors for consensus. RESULTS The ICS:OSA addresses OSA syndrome definitions, pathophysiology, epidemiology, risk factors for disease, screening methods, diagnostic testing types, multiple treatment modalities, and effects of OSA treatment on multiple OSA-associated comorbidities. Specific focus on outcomes with positive airway pressure (PAP) and surgical treatments were evaluated. CONCLUSION This review of the literature consolidates the available knowledge and identifies the limitations of the current evidence on OSA. This effort aims to create a resource for OSA evidence-based practice and identify future research needs. Knowledge gaps and research opportunities include improving the metrics of OSA disease, determining the optimal OSA screening paradigms, developing strategies for PAP adherence and longitudinal care, enhancing selection of PAP alternatives and surgery, understanding health risk outcomes, and translating evidence into individualized approaches to therapy.
Collapse
Affiliation(s)
- Jolie L. Chang
- University of California, San Francisco, California, USA
| | | | | | | | - Liza Ashbrook
- University of California, San Francisco, California, USA
| | | | - Indu Ayappa
- Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | | | | | | | | | - Maurits S. Boon
- Sidney Kimmel Medical Center at Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Pien Bosschieter
- Academic Centre for Dentistry Amsterdam, Amsterdam, The Netherlands
| | - Itzhak Braverman
- Hillel Yaffe Medical Center, Hadera Technion, Faculty of Medicine, Hadera, Israel
| | - Kara Brodie
- University of California, San Francisco, California, USA
| | | | - Ray Caesar
- Stone Oak Orthodontics, San Antonio, Texas, USA
| | | | - Yi Cai
- University of California, San Francisco, California, USA
| | | | | | | | | | | | | | | | | | - Susmita Chowdhuri
- Wayne State University and John D. Dingell VA Medical Center, Detroit, Michigan, USA
| | - Peter A. Cistulli
- Faculty of Medicine and Health, University of Sydney, Sydney, Australia
| | - David Claman
- University of California, San Francisco, California, USA
| | - Jacob Collen
- Uniformed Services University, Bethesda, Maryland, USA
| | | | | | - Eric M. Davis
- University of Virginia, Charlottesville, Virginia, USA
| | | | | | - Mohan Dutt
- University of Michigan, Ann Arbor, Michigan, USA
| | - Mazen El Ali
- University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | | | | | | | | | - Kirat Gill
- Stanford University, Palo Alto, California, USA
| | | | - Lea Golisch
- University Hospital Mannheim, Ruprecht-Karls-University Heidelberg, Heidelberg, Germany
| | | | | | | | - Arushi Gulati
- University of California, San Francisco, California, USA
| | | | | | - Paul T. Hoff
- University of Michigan, Ann Arbor, Michigan, USA
| | - Oliver M.G. Hoffmann
- University Hospital Mannheim, Ruprecht-Karls-University Heidelberg, Heidelberg, Germany
| | | | - Jennifer Hsia
- University of Minnesota, Minneapolis, Minnesota, USA
| | - Colin Huntley
- Sidney Kimmel Medical Center at Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | | | | | - Sanjana Inala
- Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | | | | | | | | | | | | | | | | | | | - Meena Khan
- Ohio State University, Columbus, Ohio, USA
| | | | - Alan Kominsky
- Cleveland Clinic Head and Neck Institute, Cleveland, Ohio, USA
| | - Meir Kryger
- Yale School of Medicine, New Haven, Connecticut, USA
| | | | | | | | - Derek J. Lam
- Oregon Health and Science University, Portland, Oregon, USA
| | | | | | | | | | | | | | - Atul Malhotra
- University of California, San Diego, California, USA
| | | | - Joachim T. Maurer
- University Hospital Mannheim, Ruprecht-Karls-University Heidelberg, Heidelberg, Germany
| | - Anna M. May
- Case Western Reserve University, Cleveland, Ohio, USA
| | - Ron B. Mitchell
- University of Texas, Southwestern and Children’s Medical Center Dallas, Texas, USA
| | | | | | | | | | - Brandon Nokes
- University of California, San Diego, California, USA
| | | | - Allan I. Pack
- University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | | | | | | | | | | | | | | | | | - Mark Quigg
- University of Virginia, Charlottesville, Virginia, USA
| | | | - Susan Redline
- Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | | | - Armand Ryden
- Veterans Affairs Greater Los Angeles Healthcare System, Los Angeles, California, USA
| | | | - Firas Sbeih
- Cleveland Clinic Head and Neck Institute, Cleveland, Ohio, USA
| | | | | | | | | | - Jiyeon Seo
- University of California, Los Angeles, California, USA
| | - Neomi Shah
- Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | | | | | - Ryan J. Soose
- University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | | | - Erika Stephens
- University of California, San Francisco, California, USA
| | | | | | | | | | - Erica Thaler
- University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Sritika Thapa
- Yale School of Medicine, New Haven, Connecticut, USA
| | | | - Nico de Vries
- Academic Centre for Dentistry Amsterdam, Amsterdam, The Netherlands
| | | | - Ian D. Weir
- Yale School of Medicine, New Haven, Connecticut, USA
| | | | | | | | - Josie Xu
- University of Toronto, Ontario, Canada
| | | | | | | | | | | | - Ilene M. Rosen
- University of Pennsylvania, Philadelphia, Pennsylvania, USA
| |
Collapse
|
7
|
Sykes AV, Sonners C, Schmickl CN, Raphelson J, Swiatkiewicz I, Roberts E, Feldman E, Malhotra A, Taub PR. The Impact of Underlying Obstructive Sleep Apnea Treatment on Exercise Capacity in Patients With Pulmonary Hypertension Undergoing a Cardiac Rehabilitation Program. J Cardiopulm Rehabil Prev 2023; 43:186-191. [PMID: 36729594 PMCID: PMC10148900 DOI: 10.1097/hcr.0000000000000745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
PURPOSE Obstructive sleep apnea (OSA)-related pulmonary hypertension (PH) can often be reversed with treatment of OSA via continuous positive airway pressure. We hypothesized that treatment of OSA would be associated with a greater improvement in exercise capacity (EC) with cardiac rehabilitation (CR), especially in patients with PH as compared with those who are untreated. METHODS We reviewed medical records of 315 consecutive patients who participated in CR. Pulmonary hypertension status was assessed on the basis of peak tricuspid regurgitant velocity (>2.8 m/sec) on pre-CR echocardiograms. The OSA status (no, untreated, or treated OSA) was determined on the basis of results from sleep studies, continuous positive airway pressure device data, and physician notes. Exercise capacity was assessed by measuring metabolic equivalents (METs) using a treadmill stress test before and after CR. RESULTS We included 290 patients who participated in CR with available echocardiographic data: 44 (15%) had PH, and 102 (35%) had known OSA (30 treated and 72 untreated). Patients with OSA versus those with no OSA were more likely to have PH ( P = .06). Patients with PH versus no-PH were associated with significantly lower baseline METs in crude and adjusted analyses ( P ≤. 004). The PH and OSA status in isolation were not associated with changes in METs ( P > .2) with CR. There was a significant interaction between OSA treatment and PH in crude and adjusted analyses ( P ≤.01): treatment vs no treatment of OSA was associated with a clinically and statistically greater improvement in METs in patients who participated in CR with but not without PH. CONCLUSION Baseline PH was associated with decreased baseline EC but did not attenuate CR-related improvements in METs. However, in the subset of OSA patients with PH, OSA therapy was associated with improved EC after CR.
Collapse
Affiliation(s)
- Alexandra Vaio Sykes
- Internal Medicine (Drs Sykes, Sonners, Raphelson, Roberts, and Feldman), Pulmonary, Critical Care, Sleep Medicine and Physiology (Drs Schmickl and Malhotra), and Cardiovascular Medicine (Drs Swiatkiewicz and Taub), UC San Diego, La Jolla, California; and Department of Cardiology and Internal Medicine, Collegium Medicum Bydgoszcz, Nicolaus Copernicus University Torun, Bydgoszcz, Poland (Dr Swiatkiewicz)
| | | | | | | | | | | | | | | | | |
Collapse
|
8
|
Edwards BA, Jordan AS, Schmickl CN, Owens RL. POINT:: Are OSA Phenotypes Clinically Useful? Yes. Chest 2023; 163:25-28. [PMID: 36628670 DOI: 10.1016/j.chest.2022.08.2235] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 05/31/2022] [Accepted: 08/05/2022] [Indexed: 01/10/2023] Open
Affiliation(s)
| | - Amy S Jordan
- University of Melbourne, Melbourne, VIC, Australia
| | | | | |
Collapse
|
9
|
Edwards BA, Jordan AS, Schmickl CN, Owens RL. Rebuttal From Dr Edwards et al. Chest 2023; 163:32-33. [PMID: 36628673 DOI: 10.1016/j.chest.2022.07.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 05/31/2022] [Accepted: 07/27/2022] [Indexed: 01/11/2023] Open
Affiliation(s)
| | - Amy S Jordan
- University of Melbourne, Melbourne, VIC, Australia
| | | | | |
Collapse
|
10
|
Affiliation(s)
- Christopher N. Schmickl
- Division of Pulmonary, Critical Care, and Sleep MedicineUniversity of California San DiegoSan Diego, California
| | - Bradley A. Edwards
- School of Biomedical Sciences and Biomedical Discovery Institute,Turner Institute for Brain and Mental HealthMonash UniversityMelbourne, Victoria, Australia
| | - Atul Malhotra
- Division of Pulmonary, Critical Care, and Sleep MedicineUniversity of California San DiegoSan Diego, California
| |
Collapse
|
11
|
Nokes B, Schmickl CN, Brena R, Bosompra NN, Gilbertson D, Sands SA, Bhattacharjee R, Mann DL, Owens RL, Malhotra A, Orr JE. The impact of daytime transoral neuromuscular stimulation on upper airway physiology - A mechanistic clinical investigation. Physiol Rep 2022; 10:e15360. [PMID: 35748091 PMCID: PMC9226850 DOI: 10.14814/phy2.15360] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 06/02/2022] [Accepted: 06/05/2022] [Indexed: 06/15/2023] Open
Abstract
There is a need for alternatives to positive airway pressure for the treatment of obstructive sleep apnea and snoring. Improving upper airway dilator function might alleviate upper airway obstruction. We hypothesized that transoral neuromuscular stimulation would reduce upper airway collapse in concert with improvement in genioglossal muscle function. Subjects with simple snoring and mild OSA (AHI < 15/h on screening) underwent in-laboratory polysomnography with concurrent genioglossal electromyography (EMGgg) before and after 4-6 weeks of twice-daily transoral neuromuscular stimulation. Twenty patients completed the study: Sixteen males, mean ± SD age 40 ± 13 years, and BMI 26.3 ± 3.8 kg/m2 . Although there was no change in non-rapid eye movement EMGgg phasic (p = 0.66) or tonic activity (p = 0.83), and no decrease in snoring or flow limitation, treatment was associated with improvements in tongue endurance, sleep quality, and sleep efficiency. In this protocol, transoral neurostimulation did not result in changes in genioglossal activity or upper airway collapse, but other beneficial effects were noted suggesting a need for additional mechanistic investigation.
Collapse
Affiliation(s)
- Brandon Nokes
- University of CaliforniaDivision of Pulmonary, Critical Care, Sleep Medicine, and PhysiologyLa JollaCaliforniaUSA
- VA San DiegoDivision of Sleep MedicineSan DiegoCaliforniaUSA
| | - Christopher N. Schmickl
- University of CaliforniaDivision of Pulmonary, Critical Care, Sleep Medicine, and PhysiologyLa JollaCaliforniaUSA
| | - Rebbecca Brena
- University of CaliforniaDivision of Pulmonary, Critical Care, Sleep Medicine, and PhysiologyLa JollaCaliforniaUSA
| | - Nana Naa‐Oye Bosompra
- University of CaliforniaDivision of Pulmonary, Critical Care, Sleep Medicine, and PhysiologyLa JollaCaliforniaUSA
| | - Dillon Gilbertson
- University of CaliforniaDivision of Pulmonary, Critical Care, Sleep Medicine, and PhysiologyLa JollaCaliforniaUSA
| | - Scott A. Sands
- Division of Sleep and Circadian DisordersBrigham and Women's Hospital and Harvard Medical SchoolBostonMassachusettsUSA
| | | | - Dwayne L. Mann
- Institute for Social Science ResearchUniversity of QueenslandBrisbaneAustralia
| | - Robert L. Owens
- University of CaliforniaDivision of Pulmonary, Critical Care, Sleep Medicine, and PhysiologyLa JollaCaliforniaUSA
| | - Atul Malhotra
- University of CaliforniaDivision of Pulmonary, Critical Care, Sleep Medicine, and PhysiologyLa JollaCaliforniaUSA
| | - Jeremy E. Orr
- University of CaliforniaDivision of Pulmonary, Critical Care, Sleep Medicine, and PhysiologyLa JollaCaliforniaUSA
| |
Collapse
|
12
|
Raphelson JR, Schmickl CN, Sonners C, Kreitinger K, Grunvald E, Horgan S, Malhotra A. Obesity Hypoventilation Syndrome and Postsurgical Outcomes in a Bariatric Surgery Cohort. Obes Surg 2022; 32:1-7. [PMID: 35538187 PMCID: PMC9276616 DOI: 10.1007/s11695-022-06073-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2021] [Revised: 04/13/2022] [Accepted: 04/20/2022] [Indexed: 12/04/2022]
Abstract
Purpose Patients with obesity and elevated serum bicarbonate suggesting obesity hypoventilation syndrome (OHS) undergoing bariatric surgery may represent a unique subgroup. Information regarding surgical outcomes in this population remains limited. We sought to test the hypothesis that an elevated bicarbonate would be an important predictor of perioperative complications (i.e., length of hospital stay) and postsurgical outcomes (i.e., weight loss at 1 year). Materials and Methods Consecutive patients undergoing bariatric surgery between January 2015 and December 2018 were included. Patients with a preoperative serum bicarbonate ≥ 27 mEq/L were classified as suspected OHS. Results Of 297 patients, the prevalence of suspected OHS based on an elevated bicarbonate was 19.5% (95% CI: 15.3 to 24.6%). Length of hospital stay was similar in the suspected OHS and non-OHS control group (1.50 vs 1.49 days, P = 0.98). The achieved weight loss from peak preoperative weight to 1 year post-surgery was less in the suspected OHS vs the control group (4.2% [95% CI 1.6 to 6.8]; P = 0.002). Conclusion Patients with serum bicarbonate ≥ 27 mEq/L as a surrogate marker for OHS experienced weight loss that was significantly less than their normal serum bicarbonate counterparts, but still achieved weight loss deemed clinically important by current guidelines. We observed no significant difference in length of hospital stay at time of surgery. Graphical abstract ![]()
Collapse
Affiliation(s)
- Janna R Raphelson
- Division of Internal Medicine, UC San Diego Health, San Diego, CA, 92109, USA.
| | - Christopher N Schmickl
- Division of Pulmonary, Critical Care, & Sleep Medicine, UC San Diego Health, San Diego, CA, 92109, USA
| | - Christine Sonners
- Division of Internal Medicine, UC San Diego Health, San Diego, CA, 92109, USA
| | - Kimberly Kreitinger
- Division of Internal Medicine, UC San Diego Health, San Diego, CA, 92109, USA
| | - Eduardo Grunvald
- Division of General Internal Medicine, UC San Diego Health, San Diego, CA, 92109, USA.,Bariatric and Metabolic Institute, UC San Diego Health, San Diego, CA, 92109, USA
| | - Santiago Horgan
- Bariatric and Metabolic Institute, UC San Diego Health, San Diego, CA, 92109, USA.,Department of Surgery, UC San Diego Health, San Diego, CA, 92109, USA
| | - Atul Malhotra
- Division of Pulmonary, Critical Care, & Sleep Medicine, UC San Diego Health, San Diego, CA, 92109, USA
| |
Collapse
|
13
|
Schmickl CN, Orr JE, Kim P, Nokes B, Sands S, Manoharan S, McGinnis L, Parra G, DeYoung P, Owens RL, Malhotra A. Point-of-care prediction model of loop gain in patients with obstructive sleep apnea: development and validation. BMC Pulm Med 2022; 22:158. [PMID: 35468829 PMCID: PMC9036750 DOI: 10.1186/s12890-022-01950-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Accepted: 04/13/2022] [Indexed: 11/10/2022] Open
Abstract
Background High loop gain (unstable ventilatory control) is an important—but difficult to measure—contributor to obstructive sleep apnea (OSA) pathogenesis, predicting OSA sequelae and/or treatment response. Our objective was to develop and validate a clinical prediction tool of loop gain. Methods A retrospective cohort of consecutive adults with OSA (apnea–hypopnea index, AHI > 5/hour) based on in-laboratory polysomnography 01/2017–12/2018 was randomly split into a training and test-set (3:1-ratio). Using a customized algorithm (“reference standard”) loop gain was quantified from raw polysomnography signals on a continuous scale and additionally dichotomized (high > 0.7). Candidate predictors included general patient characteristics and routine polysomnography data. The model was developed (training-set) using linear regression with backward selection (tenfold cross-validated mean square errors); the predicted loop gain of the final linear regression model was used to predict loop gain class. More complex, alternative models including lasso regression or random forests were considered but did not meet pre-specified superiority-criteria. Final model performance was validated on the test-set. Results The total cohort included 1055 patients (33% high loop gain). Based on the final model, higher AHI (beta = 0.0016; P < .001) and lower hypopnea-percentage (beta = −0.0019; P < .001) predicted higher loop gain values. The predicted loop gain showed moderate-to-high correlation with the reference loop gain (r = 0.48; 95% CI 0.38–0.57) and moderate discrimination of patients with high versus low loop gain (area under the curve = 0.73; 95% CI 0.67–0.80). Conclusion To our knowledge this is the first prediction model of loop gain based on readily-available clinical data, which may facilitate retrospective analyses of existing datasets, better patient selection for clinical trials and eventually clinical practice.
Supplementary Information The online version contains supplementary material available at 10.1186/s12890-022-01950-y.
Collapse
Affiliation(s)
- Christopher N Schmickl
- Division of Pulmonary, Critical Care and Sleep Medicine, University of California, San Diego (UCSD), San Diego, CA, 92037, USA.
| | - Jeremy E Orr
- Division of Pulmonary, Critical Care and Sleep Medicine, University of California, San Diego (UCSD), San Diego, CA, 92037, USA
| | - Paul Kim
- Division of Cardiology, University of California, San Diego (UCSD), San Diego, CA, 92037, USA
| | - Brandon Nokes
- Division of Pulmonary, Critical Care and Sleep Medicine, University of California, San Diego (UCSD), San Diego, CA, 92037, USA
| | - Scott Sands
- Division of Sleep and Circadian Disorders, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Sreeganesh Manoharan
- Division of Pulmonary, Critical Care and Sleep Medicine, University of California, San Diego (UCSD), San Diego, CA, 92037, USA
| | - Lana McGinnis
- Division of Pulmonary, Critical Care and Sleep Medicine, University of California, San Diego (UCSD), San Diego, CA, 92037, USA
| | - Gabriela Parra
- Division of Pulmonary, Critical Care and Sleep Medicine, University of California, San Diego (UCSD), San Diego, CA, 92037, USA
| | - Pamela DeYoung
- Division of Pulmonary, Critical Care and Sleep Medicine, University of California, San Diego (UCSD), San Diego, CA, 92037, USA
| | - Robert L Owens
- Division of Pulmonary, Critical Care and Sleep Medicine, University of California, San Diego (UCSD), San Diego, CA, 92037, USA
| | - Atul Malhotra
- Division of Pulmonary, Critical Care and Sleep Medicine, University of California, San Diego (UCSD), San Diego, CA, 92037, USA
| |
Collapse
|
14
|
Schmickl CN, Bosompra NO, DeYoung PN, Gilbertson D, Orr JE, Malhotra A, Grant I, Ancoli-Israel S, Young MK, Owens RL. Diagnostic performance of screening tools for the detection of obstructive sleep apnea in people living with HIV. J Clin Sleep Med 2022; 18:1797-1804. [PMID: 35383569 DOI: 10.5664/jcsm.9964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
STUDY OBJECTIVES Many people living with HIV (PLWH) have undiagnosed obstructive sleep apnea (OSA), which may contribute to commonly reported fatigue and the high cardiovascular disease burden in this population. Our objective was to assess the utility of traditional OSA screening tools (STOP-BANG, Berlin Questionnaire (BQ), and Epworth Sleepiness Scale (ESS)) for detecting OSA in PLWH. METHODS Adult PLWH were recruited from sleep/HIV clinics and the community into a larger clinical trial which included completion of these questionnaires before in-laboratory polysomnography. Discriminatory performance of these screening tools was assessed using area under receiver operating characteristic curves (AUC). The reference standard for the primary analysis was OSA based on an AHI≥5/h using recommended "1A"-criteria (hypopnea with 3%-desaturation and/or arousal). Secondary analyses explored acceptable "1B"-criteria (hypopnea with 4%-desaturation) and/or higher AHI cut-offs (≥15/h). RESULTS 120 PLWH were included (mean-age: 50±11 years; body mass index: 27±4 kg/m2, 84% male) and OSA was diagnosed in 75% using 1A-criteria. In the primary analysis, the discriminatory performance of the three screening tools was low (AUCs 0.58 to 0.70) and similar across the tools (P≥0.14). In secondary analyses, STOP-BANG showed moderate-high discriminatory ability (AUCs 0.77-0.80) and performed significantly better (P≤0.008) than the BQ or ESS (AUCs 0.53-0.62). CONCLUSIONS OSA was highly prevalent in our cohort of PLWH. Although STOP-BANG could reasonably identify moderate-severe OSA, the tools were not reliable for mild disease. Specifically, the questionnaires perform poorly for PLWH with mild OSA manifesting with arousals, yet such people may be at risk of fatigue/sleepiness and impaired memory consolidation. CLINICAL TRIAL REGISTRATION Registry: ClinicalTrials.gov; Title: Obstructive Sleep Apnea Endotypes and Impact on Phenotypes of People Living With HIV (PLWH/OSA); Identifier: NCT03575143; URL: https://clinicaltrials.gov/ct2/show/NCT03575143.
Collapse
Affiliation(s)
| | | | | | | | - Jeremy E Orr
- University of California San Diego, La Jolla, California
| | - Atul Malhotra
- University of California San Diego, La Jolla, California
| | - Igor Grant
- University of California San Diego, La Jolla, California
| | | | | | - Robert L Owens
- University of California San Diego, La Jolla, California
| |
Collapse
|
15
|
Orr JE, Edwards BA, Schmickl CN, Karris M, DeYoung PN, Darquenne C, Theilmann R, Jain S, Malhotra A, Hicks CB, Owens RL. Pathogenesis of obstructive sleep apnea in people living with HIV. J Appl Physiol (1985) 2021; 131:1671-1678. [PMID: 34672765 PMCID: PMC8714978 DOI: 10.1152/japplphysiol.00591.2021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Obstructive sleep apnea (OSA) is highly prevalent in people living with human immunodeficiency virus (HIV) (PLWH), and it might contribute to frequently reported symptoms and comorbidities. Traditional risk factors for OSA are often absent in PLWH, suggesting that HIV or HIV medications might predispose to OSA. Therefore, we measured the anatomical and nonanatomical traits important for OSA pathogenesis in those with and without HIV. We recruited virally suppressed PLWH who had been previously diagnosed with OSA (PLWH + OSA) adherent to positive airway pressure (PAP) therapy, along with age-, sex-, and body mass index (BMI)-matched OSA controls. All participants underwent a baseline polysomnogram to assess OSA severity and a second overnight research sleep study during which the airway pressure was adjusted slowly or rapidly to measure the OSA traits. Seventeen PLWH + OSA and 17 OSA control participants were studied [median age = 58 (IQR = 54-65) yr, BMI = 30.7 (28.4-31.8) kg/m2, apnea-hypopnea index = 46 (24-74)/h]. The groups were similar, although PLWH + OSA demonstrated greater sleepiness (despite PAP) and worse sleep efficiency on baseline polysomnography. On physiological testing during sleep, there were no statistically significant differences in OSA traits (including Veupnea, Varousal, Vpassive, Vactive, and loop gain) between PLWH + OSA and OSA controls, using mixed-effects modeling to account for age, sex, and BMI and incorporating each repeated measurement (range = 72-334 measures/trait). Our data suggest that well-treated HIV does not substantially impact the pathogenesis of OSA. Given similar underlying physiology, existing available therapeutic approaches are likely to be adequate to manage OSA in PLWH, which might improve symptoms and comorbidities.NEW & NOTEWORTHY Clinical data suggest an increased risk of obstructive sleep apnea (OSA) in people living with HIV (PLWH), while OSA might account for chronic health issues in this population. We characterized the anatomical and nonanatomical OSA traits in PLWH + OSA compared with OSA controls, using detailed physiological measurements obtained during sleep. Our data suggest against a major impact of HIV on OSA pathogenesis. Available OSA management strategies should be effective to address this potentially important comorbidity in PLWH.
Collapse
Affiliation(s)
- Jeremy E Orr
- Division of Pulmonary, Critical Care, and Sleep Medicine, University of California San Diego, San Diego, California
| | - Bradley A Edwards
- Sleep and Circadian Medicine Laboratory, Department of Physiology, Biomedicine Discovery Institute, Monash University, Melbourne, Australia.,Turner Institute for Brain and Mental Health, Monash University, Melbourne, Australia
| | - Christopher N Schmickl
- Division of Pulmonary, Critical Care, and Sleep Medicine, University of California San Diego, San Diego, California
| | - Maile Karris
- Division of Infectious Disease, University of California San Diego, San Diego, California
| | - Pamela N DeYoung
- Division of Pulmonary, Critical Care, and Sleep Medicine, University of California San Diego, San Diego, California
| | - Chantal Darquenne
- Division of Pulmonary, Critical Care, and Sleep Medicine, University of California San Diego, San Diego, California
| | - Rebecca Theilmann
- Department of Radiology, University of California San Diego, San Diego, California
| | - Sonia Jain
- Herbert Wertheim School of Public Health and Human Longevity Science, University of California San Diego, San Diego, California
| | - Atul Malhotra
- Division of Pulmonary, Critical Care, and Sleep Medicine, University of California San Diego, San Diego, California
| | - Charles B Hicks
- Division of Infectious Disease, University of California San Diego, San Diego, California
| | - Robert L Owens
- Division of Pulmonary, Critical Care, and Sleep Medicine, University of California San Diego, San Diego, California
| |
Collapse
|
16
|
Schmickl CN, Landry S, Orr JE, Nokes B, Edwards BA, Malhotra A, Owens RL. Effects of acetazolamide on control of breathing in sleep apnea patients: Mechanistic insights using meta-analyses and physiological model simulations. Physiol Rep 2021; 9:e15071. [PMID: 34699135 PMCID: PMC8547551 DOI: 10.14814/phy2.15071] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 09/14/2021] [Accepted: 09/18/2021] [Indexed: 11/24/2022] Open
Abstract
Obstructive and central sleep apnea affects ~1 billion people globally and may lead to serious cardiovascular and neurocognitive consequences, but treatment options are limited. High loop gain (ventilatory instability) is a major pathophysiological mechanism underlying both types of sleep apnea and can be lowered pharmacologically with acetazolamide, thereby improving sleep apnea severity. However, individual responses vary and are strongly correlated with the loop gain reduction achieved by acetazolamide. To aid with patient selection for long-term trials and clinical care, our goal was to understand better the factors that determine the change in loop gain following acetazolamide in human subjects with sleep apnea. Thus, we (i) performed several meta-analyses to clarify how acetazolamide affects ventilatory control and loop gain (including its primary components controller/plant gain), and based on these results, we (ii) performed physiological model simulations to assess how different baseline conditions affect the change in loop gain. Our results suggest that (i) acetazolamide primarily causes a left shift of the chemosensitivity line thus lowering plant gain without substantially affecting controller gain; and (ii) higher controller gain, higher paCO2 at eupneic ventilation, and lower CO2 production at baseline result in a more pronounced loop gain reduction with acetazolamide. In summary, the combination of mechanistic meta-analyses with model simulations provides a unified framework of acetazolamide's effects on ventilatory control and revealed physiological predictors of response, which are consistent with empirical observations of acetazolamide's effects in different sleep apnea subgroups. Prospective studies are needed to validate these predictors and assess their value for patient selection.
Collapse
Affiliation(s)
- Christopher N. Schmickl
- Division of Pulmonary, Critical Care and Sleep MedicineUniversity of California, San Diego (UCSD)La JollaCaliforniaUSA
| | - Shane Landry
- Department of PhysiologySleep and Circadian Medicine LaboratorySchool of Biomedical Sciences and Biomedical Discovery InstituteMonash UniversityMelbourneVictoriaAustralia
- Turner Institute for Brain and Mental HealthMonash UniversityMelbourneVictoriaAustralia
| | - Jeremy E. Orr
- Division of Pulmonary, Critical Care and Sleep MedicineUniversity of California, San Diego (UCSD)La JollaCaliforniaUSA
| | - Brandon Nokes
- Division of Pulmonary, Critical Care and Sleep MedicineUniversity of California, San Diego (UCSD)La JollaCaliforniaUSA
| | - Bradley A. Edwards
- Department of PhysiologySleep and Circadian Medicine LaboratorySchool of Biomedical Sciences and Biomedical Discovery InstituteMonash UniversityMelbourneVictoriaAustralia
- Turner Institute for Brain and Mental HealthMonash UniversityMelbourneVictoriaAustralia
| | - Atul Malhotra
- Division of Pulmonary, Critical Care and Sleep MedicineUniversity of California, San Diego (UCSD)La JollaCaliforniaUSA
| | - Robert L. Owens
- Division of Pulmonary, Critical Care and Sleep MedicineUniversity of California, San Diego (UCSD)La JollaCaliforniaUSA
| |
Collapse
|
17
|
Schmickl CN, Owens RL, Orr JE, Edwards BA, Malhotra A. Side effects of acetazolamide: a systematic review and meta-analysis assessing overall risk and dose dependence. BMJ Open Respir Res 2021; 7:7/1/e000557. [PMID: 32332024 PMCID: PMC7204833 DOI: 10.1136/bmjresp-2020-000557] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2020] [Revised: 02/22/2020] [Accepted: 02/29/2020] [Indexed: 02/04/2023] Open
Abstract
Introduction Acetazolamide (AZM) is used for various conditions (eg, altitude sickness, sleep apnoea, glaucoma), but therapy is often limited by its side effect profile. Our objective was to estimate the risk of commonly reported side effects based on meta-analyses. We hypothesised that these risks are dose-dependent. Methods We queried MEDLINE/EMBASE (Medical Literature Analysis and Retrieval System Online/Excerpta Medica dataBASE) up until 04/10/2019, including any randomised placebo-controlled trial in which adults received oral AZM versus placebo reporting side effects. Eligibility assessment was performed by two independent reviewers. Data were abstracted by one reviewer who verified key entries at a second time point. For side effects reported by >3 studies a pooled effect estimate was calculated, and heterogeneity assessed via I2; for outcomes reported by >5 studies effect modification by total daily dose (EMbyTDD; <400 mg/d, 400–600 mg/d, >600 mg/d) was assessed via meta-regression. For pre-specified, primary outcomes (paraesthesias, taste disturbances, polyuria and fatigue) additional subgroup analyses were performed using demographics, intervention details, laboratory changes and risk of bias. Results We included 42 studies in the meta-analyses (Nsubjects=1274/1211 in AZM/placebo groups). AZM increased the risk of all primary outcomes (p<0.01, I2 ≤16% and low-to-moderate quality of evidence for all)—the numbers needed to harm (95% CI; nStudies) for each were: paraesthesias 2.3 (95% CI 2 to 2.7; n=39), dysgeusia 18 (95% CI 10 to 38, n=22), polyuria 17 (95% CI 9 to 49; n=22), fatigue 11 (95% CI 6 to 24; n=14). The risk for paraesthesias (beta=1.8 (95% CI 1.1 to 2.9); PEMbyTDD=0.01) and dysgeusia (beta=3.1 (95% CI 1.2 to 8.2); PEMbyTDD=0.02) increased with higher AZM doses; the risk of fatigue also increased with higher dose but non-significantly (beta=2.6 (95% CI 0.7 to 9.4); PEMbyTDD=0.14). Discussion This comprehensive meta-analysis of low-to-moderate quality evidence defines risk of common AZM side effects and corroborates dose dependence of some side effects. These results may inform clinical decision making and support efforts to establish the lowest effective dose of AZM for various conditions.
Collapse
Affiliation(s)
- Christopher N Schmickl
- Department of Medicine, Division of Pulmonary, Critical Care and Sleep Medicine, University of California San Diego, La Jolla, California, USA
| | - Robert L Owens
- Department of Medicine, Division of Pulmonary, Critical Care and Sleep Medicine, University of California San Diego, La Jolla, California, USA
| | - Jeremy E Orr
- Department of Medicine, Division of Pulmonary, Critical Care and Sleep Medicine, University of California San Diego, La Jolla, California, USA
| | - Bradley A Edwards
- Sleep and Circadian Medicine Laboratory, Department of Physiology, Monash University, Clayton, Victoria, Australia.,School of Psychological Sciences and Monash Institute of Cognitive and Clinical Neurosciences, Monash University, Clayton, Victoria, Australia
| | - Atul Malhotra
- Department of Medicine, Division of Pulmonary, Critical Care and Sleep Medicine, University of California San Diego, La Jolla, California, USA
| |
Collapse
|
18
|
Simonson TS, Baker TL, Banzett RB, Bishop T, Dempsey JA, Feldman JL, Guyenet PG, Hodson EJ, Mitchell GS, Moya EA, Nokes BT, Orr JE, Owens RL, Poulin M, Rawling JM, Schmickl CN, Watters JJ, Younes M, Malhotra A. Silent hypoxaemia in COVID-19 patients. J Physiol 2021. [PMID: 33347610 DOI: 10.1113/tjp.v599.410.1113/jp280769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023] Open
Abstract
The clinical presentation of COVID-19 due to infection with SARS-CoV-2 is highly variable with the majority of patients having mild symptoms while others develop severe respiratory failure. The reason for this variability is unclear but is in critical need of investigation. Some COVID-19 patients have been labelled with 'happy hypoxia', in which patient complaints of dyspnoea and observable signs of respiratory distress are reported to be absent. Based on ongoing debate, we highlight key respiratory and neurological components that could underlie variation in the presentation of silent hypoxaemia and define priorities for subsequent investigation.
Collapse
Affiliation(s)
- Tatum S Simonson
- Division of Pulmonary, Critical Care, & Sleep Medicine, Department of Medicine, University of California, San Diego, CA, USA
| | - Tracy L Baker
- Department of Comparative Biosciences, University of Wisconsin -, Madison, WI, USA
| | - Robert B Banzett
- Division of Pulmonary, Critical Care, & Sleep Medicine Beth Israel Deaconess Medical Center, Department of Medicine, Harvard Medical School, Boston, MA, USA
| | - Tammie Bishop
- Target Discovery Institute, University of Oxford, Oxford, UK
| | - Jerome A Dempsey
- Department of Population Health Sciences, School of Medicine and Public Health, University of Wisconsin -, Madison, WI, USA
| | - Jack L Feldman
- Department of Neurobiology, University of California, Los Angeles, CA, USA
| | - Patrice G Guyenet
- Department of Pharmacology, School of Medicine, University of Virginia, Charlottesville, VA, USA
| | - Emma J Hodson
- The Francis Crick Institute, London, UK
- The Department of Experimental Medicine and Immunotherapeutics, University of Cambridge, Cambridge, UK
| | - Gordon S Mitchell
- Department of Physical Therapy, Center for Respiratory Research and Rehabilitation, College of Public Health and Health Professions, University of Florida, Gainesville, FL, USA
| | - Esteban A Moya
- Division of Pulmonary, Critical Care, & Sleep Medicine, Department of Medicine, University of California, San Diego, CA, USA
| | - Brandon T Nokes
- Division of Pulmonary, Critical Care, & Sleep Medicine, Department of Medicine, University of California, San Diego, CA, USA
| | - Jeremy E Orr
- Division of Pulmonary, Critical Care, & Sleep Medicine, Department of Medicine, University of California, San Diego, CA, USA
| | - Robert L Owens
- Division of Pulmonary, Critical Care, & Sleep Medicine, Department of Medicine, University of California, San Diego, CA, USA
| | - Marc Poulin
- Departments of Physiology & Pharmacology and Clinical Neurosciences, Cumming School of Medicine and Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
| | - Jean M Rawling
- Departments of Family Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Christopher N Schmickl
- Division of Pulmonary, Critical Care, & Sleep Medicine, Department of Medicine, University of California, San Diego, CA, USA
| | - Jyoti J Watters
- Department of Comparative Biosciences, University of Wisconsin -, Madison, WI, USA
| | - Magdy Younes
- Sleep Disorders Centre, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Atul Malhotra
- Division of Pulmonary, Critical Care, & Sleep Medicine, Department of Medicine, University of California, San Diego, CA, USA
| |
Collapse
|
19
|
Simonson TS, Baker TL, Banzett RB, Bishop T, Dempsey JA, Feldman JL, Guyenet PG, Hodson EJ, Mitchell GS, Moya EA, Nokes BT, Orr JE, Owens RL, Poulin M, Rawling JM, Schmickl CN, Watters JJ, Younes M, Malhotra A. Silent hypoxaemia in COVID-19 patients. J Physiol 2021; 599:1057-1065. [PMID: 33347610 DOI: 10.1113/jp280769] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Accepted: 12/07/2020] [Indexed: 12/14/2022] Open
Abstract
The clinical presentation of COVID-19 due to infection with SARS-CoV-2 is highly variable with the majority of patients having mild symptoms while others develop severe respiratory failure. The reason for this variability is unclear but is in critical need of investigation. Some COVID-19 patients have been labelled with 'happy hypoxia', in which patient complaints of dyspnoea and observable signs of respiratory distress are reported to be absent. Based on ongoing debate, we highlight key respiratory and neurological components that could underlie variation in the presentation of silent hypoxaemia and define priorities for subsequent investigation.
Collapse
Affiliation(s)
- Tatum S Simonson
- Division of Pulmonary, Critical Care, & Sleep Medicine, Department of Medicine, University of California, San Diego, CA, USA
| | - Tracy L Baker
- Department of Comparative Biosciences, University of Wisconsin -, Madison, WI, USA
| | - Robert B Banzett
- Division of Pulmonary, Critical Care, & Sleep Medicine Beth Israel Deaconess Medical Center, Department of Medicine, Harvard Medical School, Boston, MA, USA
| | - Tammie Bishop
- Target Discovery Institute, University of Oxford, Oxford, UK
| | - Jerome A Dempsey
- Department of Population Health Sciences, School of Medicine and Public Health, University of Wisconsin -, Madison, WI, USA
| | - Jack L Feldman
- Department of Neurobiology, University of California, Los Angeles, CA, USA
| | - Patrice G Guyenet
- Department of Pharmacology, School of Medicine, University of Virginia, Charlottesville, VA, USA
| | - Emma J Hodson
- The Francis Crick Institute, London, UK.,The Department of Experimental Medicine and Immunotherapeutics, University of Cambridge, Cambridge, UK
| | - Gordon S Mitchell
- Department of Physical Therapy, Center for Respiratory Research and Rehabilitation, College of Public Health and Health Professions, University of Florida, Gainesville, FL, USA
| | - Esteban A Moya
- Division of Pulmonary, Critical Care, & Sleep Medicine, Department of Medicine, University of California, San Diego, CA, USA
| | - Brandon T Nokes
- Division of Pulmonary, Critical Care, & Sleep Medicine, Department of Medicine, University of California, San Diego, CA, USA
| | - Jeremy E Orr
- Division of Pulmonary, Critical Care, & Sleep Medicine, Department of Medicine, University of California, San Diego, CA, USA
| | - Robert L Owens
- Division of Pulmonary, Critical Care, & Sleep Medicine, Department of Medicine, University of California, San Diego, CA, USA
| | - Marc Poulin
- Departments of Physiology & Pharmacology and Clinical Neurosciences, Cumming School of Medicine and Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
| | - Jean M Rawling
- Departments of Family Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Christopher N Schmickl
- Division of Pulmonary, Critical Care, & Sleep Medicine, Department of Medicine, University of California, San Diego, CA, USA
| | - Jyoti J Watters
- Department of Comparative Biosciences, University of Wisconsin -, Madison, WI, USA
| | - Magdy Younes
- Sleep Disorders Centre, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Atul Malhotra
- Division of Pulmonary, Critical Care, & Sleep Medicine, Department of Medicine, University of California, San Diego, CA, USA
| |
Collapse
|
20
|
Schmickl CN, Lettieri CJ, Orr JE, DeYoung P, Edwards BA, Owens RL, Malhotra A. The Arousal Threshold as a Drug Target to Improve Continuous Positive Airway Pressure Adherence: Secondary Analysis of a Randomized Trial. Am J Respir Crit Care Med 2020; 202:1592-1595. [PMID: 32673496 PMCID: PMC7706152 DOI: 10.1164/rccm.202003-0502le] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
| | | | - Jeremy E. Orr
- University of California San Diego, San Diego, California
| | - Pamela DeYoung
- University of California San Diego, San Diego, California
| | | | | | - Atul Malhotra
- University of California San Diego, San Diego, California
| |
Collapse
|
21
|
Kreitinger KY, Lui MMS, Owens RL, Schmickl CN, Grunvald E, Horgan S, Raphelson JR, Malhotra A. Screening for Obstructive Sleep Apnea in a Diverse Bariatric Surgery Population. Obesity (Silver Spring) 2020; 28:2028-2034. [PMID: 33150742 PMCID: PMC7760780 DOI: 10.1002/oby.23021] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 07/19/2020] [Accepted: 08/24/2020] [Indexed: 12/18/2022]
Abstract
OBJECTIVE Obstructive sleep apnea (OSA) is common among bariatric surgery patients and is associated with perioperative risk. Preoperative screening is recommended, but some screening tools lack validation, and their relative performance is unclear in this population. The study objective was to compare the ability of four existing tools (STOP-BANG, NO-OSAS, No-Apnea, and the Epworth Sleepiness Scale [ESS]) to screen for moderate to severe OSA in a diverse bariatric cohort. METHODS Data from patients presenting for first-time bariatric surgery who underwent a sleep study within 1 year of the initial encounter were retrospectively reviewed. Performance of the four tools for detecting moderate to severe OSA was compared based on the area under the receiver operating characteristic curves (AUC). RESULTS Of the included 214 patients (83.2% female, median age 39 years), 45.3% had moderate to severe OSA. Based on AUC, STOP-BANG (0.75 [95% CI: 0.68-0.81], N = 185), NO-OSAS (0.76 [95% CI: 0.69-0.82], N = 185), and No-Apnea (0.69 [95% CI: 0.62-0.76], N = 190) had similar performance (P > 0.16). Compared with STOP-BANG and NO-OSAS, ESS (0.61 [95% CI: 0.54-0.68], N = 198) had a significantly lower AUC (P < 0.01). Hispanic/Latino self-identification, sex, or obesity class did not significantly modify test performance. CONCLUSIONS STOP-BANG and NO-OSAS may be preferable to No-Apnea and ESS when screening bariatric surgery patients for moderate to severe OSA. Efforts to screen bariatric patients for OSA are recommended.
Collapse
Affiliation(s)
| | - Macy M. S. Lui
- Department of Medicine, University of Hong Kong, Hong Kong SAR
| | - Robert L. Owens
- Department of Medicine, UC San Diego, San Diego, California, USA
| | | | - Eduardo Grunvald
- Department of Medicine, UC San Diego, San Diego, California, USA
| | - Santiago Horgan
- Department of Surgery, UC San Diego, San Diego, California, USA
| | | | - Atul Malhotra
- Department of Medicine, UC San Diego, San Diego, California, USA
| |
Collapse
|
22
|
Al-Azzawi S, Orr JE, DeYoung P, Owens RL, Malhotra A, Schmickl CN. 0560 The Effect of Smoking on OSA Endotypes: A Retrospective Cohort Study. Sleep 2020. [DOI: 10.1093/sleep/zsaa056.557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
Introduction
Smoking is a purported risk factor for obstructive sleep apnea (OSA), but the mechanisms through which smoking may cause OSA are largely unclear. Our goal is to assess the effect of smoking on the pathophysiological traits (“endotypes”) underlying OSA.
Methods
Based on a chart review we are creating a retrospective cohort of consecutive patients who were newly diagnosed with OSA based on an inlab polysomnogram between 1/2016 and 6/2018 and who have a documented smoking status. For each subject we are quantifying the endotypes (e.g. arousal threshold, loop gain, upper airway muscle recruitment) via a validated polysomnography-based algorithm. Additionally, we are estimating the arousal threshold based on a clinical prediction score. We are comparing OSA endotypes (primary outcomes), sleep apnea severity (apnea-hypopnea index, SpO2 nadir) and sleep parameters (e.g. total sleep time, sleep efficiency, sleep stages) in current vs former vs never smokers using Kruskal-Wallis tests (+Dunn’s test for post hoc comparisons).
Results
To date we have screened 334 of 2,138 subjects and identified 99 eligible subjects (5 current smokers at the time of polysomnography, 37 former smokers, and 57 never smokers). The clinical arousal threshold was similar across groups (P=.69); polysomnography-based endotype measures are pending. Further, there was no significant difference in sleep apnea severity or sleep parameters across groups, except stage N2 which was less in current vs former smokers (median-percentage 48.5 vs 66.3%, P<.05) and less in never vs former smokers (61.6 vs 66.3%, P<.05).
Conclusion
Overall, former vs never smokers appear to be similar with regards to sleep and sleep apnea parameters. Prevalence of current smokers appears to be low (5%) in our cohort; larger sample size and polysomnography-based endotypes are needed before firm conclusions about the effects of smoking on OSA mechanisms can be reached (data collection continues).
Support
This study had no specific funding. Christopher Schmickl is supported by NIH T32 grant HL134632.
Collapse
Affiliation(s)
- S Al-Azzawi
- University of California, San Diego, La Jolla, CA
| | - J E Orr
- University of California, San Diego, La Jolla, CA
| | - P DeYoung
- University of California, San Diego, La Jolla, CA
| | - R L Owens
- University of California, San Diego, La Jolla, CA
| | - A Malhotra
- University of California, San Diego, La Jolla, CA
| | - C N Schmickl
- University of California, San Diego, La Jolla, CA
| |
Collapse
|
23
|
Sunwoo BY, Schmickl CN, Malhotra A. Contemporary Concise Review 2019: Sleep and ventilation. Respirology 2020; 25:552-558. [PMID: 32048407 PMCID: PMC7162714 DOI: 10.1111/resp.13781] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Accepted: 01/29/2020] [Indexed: 12/30/2022]
Affiliation(s)
- Bernie Y Sunwoo
- Division of Pulmonary, Critical Care and Sleep Medicine, University of California, San Diego (UCSD), La Jolla, CA, USA
| | - Christopher N Schmickl
- Division of Pulmonary, Critical Care and Sleep Medicine, University of California, San Diego (UCSD), La Jolla, CA, USA
| | - Atul Malhotra
- Division of Pulmonary, Critical Care and Sleep Medicine, University of California, San Diego (UCSD), La Jolla, CA, USA
| |
Collapse
|
24
|
Orr JE, Schmickl CN, Edwards BA, DeYoung PN, Brena R, Sun XS, Jain S, Malhotra A, Owens RL. Pathogenesis of obstructive sleep apnea in individuals with the COPD + OSA Overlap syndrome versus OSA alone. Physiol Rep 2020; 8:e14371. [PMID: 32061194 PMCID: PMC7023887 DOI: 10.14814/phy2.14371] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Accepted: 01/11/2020] [Indexed: 02/02/2023] Open
Abstract
Overlap syndrome (OVS) is the concurrence of chronic obstructive pulmonary disease (COPD) and obstructive sleep apnea (OSA), and is associated with poor outcomes. We hypothesized that physiological changes in COPD may affect the pathogenesis of OSA in important ways. We therefore sought to measure the anatomical and nonanatomical OSA traits in individuals with OVS and compare to those with OSA alone. Patients with established OVS were recruited, along with age, gender, and BMI matched OSA only controls. Smoking and relevant comorbidities or medications were excluded. Subjects underwent baseline polysomnography followed by an overnight physiological research study to measure the OSA traits (Veupnea , Varousal , Vpassive , Vactive , and loop gain). Fifteen subjects with OVS and 15 matched controls with OSA alone were studied (overall 66 ± 8 years, 20% women, BMI 31 ± 4 kg/m2 , apnea-hypopnea index 49 ± 36/hr). Mixed-modeling was used to incorporate each measurement (range 52-270 measures/trait), and account for age, gender, and BMI. There were no significant differences in the traits between OVS and OSA subjects, although OVS subjects potentially tolerated a lower ventilation before arousal (i.e., harder to wake; p = .06). Worsened lung function was significantly associated with worsened upper airway response and more unstable breathing (p < .05 for all). Consistent differences in key OSA traits were not observed between OVS and OSA alone. However, worse lung function does appear to exert an influence on several OSA traits. These findings indicate that a diagnosis of OVS should not generally influence the approach to OSA, but that lung function might be considered if utilizing OSA trait-specific treatment.
Collapse
Affiliation(s)
- Jeremy E. Orr
- Division of Pulmonary, Critical Care, and Sleep MedicineUniversity of California San DiegoLa JollaCAUSA
| | - Christopher N. Schmickl
- Division of Pulmonary, Critical Care, and Sleep MedicineUniversity of California San DiegoLa JollaCAUSA
| | - Bradley A. Edwards
- Sleep and Circadian Medicine LaboratoryDepartment of PhysiologyMonash UniversityMelbourneVICAustralia
- Turner Institute for Brain and Mental HealthMonash UniversityMelbourneVICAustralia
| | - Pamela N. DeYoung
- Division of Pulmonary, Critical Care, and Sleep MedicineUniversity of California San DiegoLa JollaCAUSA
| | - Rebbecca Brena
- Division of Pulmonary, Critical Care, and Sleep MedicineUniversity of California San DiegoLa JollaCAUSA
| | - Xiaoying S. Sun
- Division of Biostatistics and BioinformaticsDepartment of Family Medicine and Public HealthUniversity of California San DiegoLa JollaCAUSA
| | - Sonia Jain
- Division of Biostatistics and BioinformaticsDepartment of Family Medicine and Public HealthUniversity of California San DiegoLa JollaCAUSA
| | - Atul Malhotra
- Division of Pulmonary, Critical Care, and Sleep MedicineUniversity of California San DiegoLa JollaCAUSA
| | - Robert L. Owens
- Division of Pulmonary, Critical Care, and Sleep MedicineUniversity of California San DiegoLa JollaCAUSA
| |
Collapse
|
25
|
|
26
|
Schmickl CN, Heckman E, Owens RL, Thomas RJ. The Respiratory Signature: A Novel Concept to Leverage Continuous Positive Airway Pressure Therapy as an Early Warning System for Exacerbations of Common Diseases such as Heart Failure. J Clin Sleep Med 2019; 15:923-927. [PMID: 31138387 DOI: 10.5664/jcsm.7852] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Accepted: 04/16/2019] [Indexed: 01/18/2023]
Abstract
ABSTRACT Each night millions of patients use continuous positive airway pressure (CPAP) to treat obstructive sleep apnea (OSA). To facilitate monitoring of treatment success, modern CPAP machines routinely record and analyze the respiratory signal in near real-time and submit some of these data to the manufacturer's centralized cloud server. Some of the conditions frequently associated with OSA such as heart failure or chronic obstructive pulmonary disease result in characteristic changes of the respiratory signal ("signatures"), especially during exacerbations. Thus, this infrastructure could be leveraged to detect changes in patients' health status facilitating early interventions. To illustrate this concept, we present and discuss the case of a patient with OSA who showed abrupt changes in his breathing pattern (increase in periodic breathing and machine-detected obstructive apneas) from 10 days prior until 8 days after a hospitalization for acute heart failure exacerbation.
Collapse
Affiliation(s)
- Christopher N Schmickl
- University of California San Diego, San Diego, California.,Beth Israel Deaconess Medical Center, Boston, Massachusetts
| | - Eric Heckman
- Beth Israel Deaconess Medical Center, Boston, Massachusetts
| | - Robert L Owens
- University of California San Diego, San Diego, California
| | | |
Collapse
|
27
|
Schmickl CN, Owens RL, Orr J, Malhotra A. 0567 Side Effects of Acetazolamide - A Systematic Review and Meta-Analysis Assessing Overall Risk and Dose-Dependence. Sleep 2019. [DOI: 10.1093/sleep/zsz067.565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Christopher N Schmickl
- University of California, San Diego; Division of Pulmonary Critical Care and Sleep Medicine, San Diego, CA, USA
| | - Robert L Owens
- University of California, San Diego; Division of Pulmonary Critical Care and Sleep Medicine, San Diego, CA, USA
| | - Jeremy Orr
- University of California, San Diego; Division of Pulmonary Critical Care and Sleep Medicine, San Diego, CA, USA
| | - Atul Malhotra
- University of California, San Diego; Division of Pulmonary Critical Care and Sleep Medicine, San Diego, CA, USA
| |
Collapse
|
28
|
Schmickl CN, Owens RL, Edwards BA, Malhotra A. OSA Endotypes: What Are They and What Are Their Potential Clinical Implications? Curr Sleep Medicine Rep 2018. [DOI: 10.1007/s40675-018-0121-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
29
|
Schmickl CN, Chalise S, Borker PV, Strang A, Thomas RJ. 0572 High Residual Apnea Burden may Contribute to Frequent Outcome Failure in Randomized Controlled Trials of Positive Airway Pressure - a Proof-of-Concept Study. Sleep 2018. [DOI: 10.1093/sleep/zsy061.571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- C N Schmickl
- Beth Israel Deaconess Medical Center, Boston, MA
| | - S Chalise
- Massachusetts General Hospital, Boston, MA
| | - P V Borker
- Beth Israel Deaconess Medical Center, Boston, MA
| | - A Strang
- Beth Israel Deaconess Medical Center, Boston, MA
| | - R J Thomas
- Beth Israel Deaconess Medical Center, Boston, MA
| |
Collapse
|
30
|
Sevilla-Berrios R, O'Horo JC, Schmickl CN, Erdogan A, Chen X, Garcia Arguello LY, Dong Y, Kilickaya O, Pickering B, Kashyap R, Gajic O. Prompting with electronic checklist improves clinician performance in medical emergencies: a high-fidelity simulation study. Int J Emerg Med 2018; 11:26. [PMID: 29704128 PMCID: PMC5924513 DOI: 10.1186/s12245-018-0185-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Accepted: 04/09/2018] [Indexed: 11/30/2022] Open
Abstract
Background Inefficient processes of care delivery during acute resuscitation can compromise the “Golden Hour,” the time when quick interventions can rapidly determine the course of the patient’s outcome. Checklists have been shown to be an effective tool for standardizing care models. We developed a novel electronic tool, the Checklist for Early Recognition and Treatment of Acute Illness (CERTAIN) to facilitate standardized evaluation and treatment approach for acutely decompensating patients. The checklist was enforced by the use of a “prompter,” a team member separate from the leader who records and reviews pertinent CERTAIN algorithms and verbalizes these to the team. Our hypothesis was that the CERTAIN model, with the use of the tool and a prompter, can improve clinician performance and satisfaction in the evaluation of acute decompensating patients in a simulated environment. Methods Volunteer clinicians with valid adult cardiac life support (ACLS) certification were invited to test the CERTAIN model in a high-fidelity simulation center. The first session was used to establish a baseline evaluation in a standard clinical resuscitation scenario. Each subject then underwent online training before returning to a simulation center for a live didactic lecture, software knowledge assessment, and practice scenarios. Each subject was then evaluated on a scenario with a similar content to the baseline. All subjects took a post-experience satisfaction survey. Video recordings of the pre-and post-test sessions were evaluated using a validated method by two blinded reviewers. Results Eighteen clinicians completed baseline and post-education sessions. CERTAIN prompting was associated with reduced omissions of critical tasks (46 to 32%, p < 0.01) and 12 out of 14 general assessment tasks were completed in a more timely manner. The post-test survey indicated that 72% subjects felt better prepared during an emergency scenario using the CERTAIN model and 85% would want to be treated with the CERTAIN if they were critically ill. Conclusion Prompting with electronic checklist improves clinicians’ performance and satisfaction when dealing with medical emergencies in high-fidelity simulation environment. Electronic supplementary material The online version of this article (10.1186/s12245-018-0185-8) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Ronaldo Sevilla-Berrios
- Department of Medicine, Division of Pulmonary and Critical Care Medicine Mayo Clinic, Rochester, MN, USA.,METRIC, Mayo Clinic, Rochester, MN, USA
| | - John C O'Horo
- Department of Medicine, Division of Pulmonary and Critical Care Medicine Mayo Clinic, Rochester, MN, USA.,METRIC, Mayo Clinic, Rochester, MN, USA
| | - Christopher N Schmickl
- Department of Medicine, Division of Pulmonary and Critical Care Medicine Mayo Clinic, Rochester, MN, USA.,METRIC, Mayo Clinic, Rochester, MN, USA
| | - Aysen Erdogan
- METRIC, Mayo Clinic, Rochester, MN, USA.,Department of Anesthesiology, Mayo Clinic, 200 1st St. SW, Rochester, MN, 55905, USA.,Department of Anesthesiology and Reanimation, Suleyman Demirel University, Isparta, Turkey
| | - Xiaomei Chen
- Department of Medicine, Division of Pulmonary and Critical Care Medicine Mayo Clinic, Rochester, MN, USA.,METRIC, Mayo Clinic, Rochester, MN, USA.,Department of Critical Care Medicine, Qilu Hospital of Shandong University, Shandong, China
| | - Lisbeth Y Garcia Arguello
- Department of Medicine, Division of Pulmonary and Critical Care Medicine Mayo Clinic, Rochester, MN, USA.,METRIC, Mayo Clinic, Rochester, MN, USA
| | - Yue Dong
- Department of Medicine, Division of Pulmonary and Critical Care Medicine Mayo Clinic, Rochester, MN, USA.,METRIC, Mayo Clinic, Rochester, MN, USA
| | - Oguz Kilickaya
- METRIC, Mayo Clinic, Rochester, MN, USA.,Department of Anesthesiology, Mayo Clinic, 200 1st St. SW, Rochester, MN, 55905, USA.,Department of Anesthesiology and Reanimation, Gulhane Medical Faculty, Ankara, Turkey
| | - Brain Pickering
- METRIC, Mayo Clinic, Rochester, MN, USA.,Department of Anesthesiology, Mayo Clinic, 200 1st St. SW, Rochester, MN, 55905, USA
| | - Rahul Kashyap
- METRIC, Mayo Clinic, Rochester, MN, USA. .,Department of Anesthesiology, Mayo Clinic, 200 1st St. SW, Rochester, MN, 55905, USA.
| | - Ognjen Gajic
- Department of Medicine, Division of Pulmonary and Critical Care Medicine Mayo Clinic, Rochester, MN, USA.,METRIC, Mayo Clinic, Rochester, MN, USA
| |
Collapse
|
31
|
Barwise A, Garcia-Arguello L, Dong Y, Hulyalkar M, Vukoja M, Schultz MJ, Adhikari NKJ, Bonneton B, Kilickaya O, Kashyap R, Gajic O, Schmickl CN. Checklist for Early Recognition and Treatment of Acute Illness (CERTAIN): evolution of a content management system for point-of-care clinical decision support. BMC Med Inform Decis Mak 2016; 16:127. [PMID: 27716243 PMCID: PMC5048402 DOI: 10.1186/s12911-016-0367-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Accepted: 09/21/2016] [Indexed: 01/09/2023] Open
Abstract
Background The Checklist for Early Recognition and Treatment of Acute Illness (CERTAIN) is an international collaborative project with the overall objective of standardizing the approach to the evaluation and treatment of critically ill patients world-wide, in accordance with best-practice principles. One of CERTAIN’s key features is clinical decision support providing point-of-care information about common acute illness syndromes, procedures, and medications in an index card format. Methods This paper describes 1) the process of developing and validating the content for point-of-care decision support, and 2) the content management system that facilitates frequent peer-review and allows rapid updates of content across different platforms (CERTAIN software, mobile apps, pdf-booklet) and different languages. Results Content was created based on survey results of acute care providers and validated using an open peer-review process. Over a 3 year period, CERTAIN content expanded to include 67 syndrome cards, 30 procedure cards, and 117 medication cards. 127 (59 %) cards have been peer-reviewed so far. Initially MS Word® and Dropbox® were used to create, store, and share content for peer-review. Recently Google Docs® was used to make the peer-review process more efficient. However, neither of these approaches met our security requirements nor has the capacity to instantly update the different CERTAIN platforms. Conclusion Although we were able to successfully develop and validate a large inventory of clinical decision support cards in a short period of time, commercially available software solutions for content management are suboptimal. Novel custom solutions are necessary for efficient global point of care content system management. Electronic supplementary material The online version of this article (doi:10.1186/s12911-016-0367-3) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Amelia Barwise
- Multidisciplinary Epidemiology and Translational Research in Intensive Care (M.E.T.R.I.C.), Division of Pulmonary and Critical Care Medicine, Mayo Clinic, 200 1ST Street SW, Rochester, MN, USA.
| | - Lisbeth Garcia-Arguello
- Multidisciplinary Epidemiology and Translational Research in Intensive Care (M.E.T.R.I.C.), Division of Pulmonary and Critical Care Medicine, Mayo Clinic, 200 1ST Street SW, Rochester, MN, USA
| | - Yue Dong
- Multidisciplinary Epidemiology and Translational Research in Intensive Care (M.E.T.R.I.C.), Division of Pulmonary and Critical Care Medicine, Mayo Clinic, 200 1ST Street SW, Rochester, MN, USA
| | - Manasi Hulyalkar
- Multidisciplinary Epidemiology and Translational Research in Intensive Care (M.E.T.R.I.C.), Division of Pulmonary and Critical Care Medicine, Mayo Clinic, 200 1ST Street SW, Rochester, MN, USA
| | - Marija Vukoja
- The Institute for Pulmonary Diseases of Vojvodina, Sremska Kamenica, Faculty of Medicine, University of Novi Sad, Novi Sad, Serbia
| | - Marcus J Schultz
- Academisch Medisch Centrum, Universiteit van Amsterdam, Amsterdam, Netherlands
| | - Neill K J Adhikari
- Department of Critical Care Medicine, Sunnybrook Health Sciences Centre and University of Toronto, Toronto, Canada
| | | | - Oguz Kilickaya
- Department of Anesthesiology and Reanimation, Gulhane Military Medical Faculty, 06010, Etlik, Amkara, Turkey
| | - Rahul Kashyap
- Multidisciplinary Epidemiology and Translational Research in Intensive Care (M.E.T.R.I.C.), Division of Pulmonary and Critical Care Medicine, Mayo Clinic, 200 1ST Street SW, Rochester, MN, USA
| | - Ognjen Gajic
- Multidisciplinary Epidemiology and Translational Research in Intensive Care (M.E.T.R.I.C.), Division of Pulmonary and Critical Care Medicine, Mayo Clinic, 200 1ST Street SW, Rochester, MN, USA
| | - Christopher N Schmickl
- Multidisciplinary Epidemiology and Translational Research in Intensive Care (M.E.T.R.I.C.), Division of Pulmonary and Critical Care Medicine, Mayo Clinic, 200 1ST Street SW, Rochester, MN, USA.,Department of Medicine, Boston Medical Center, Boston University School of Medicine, Boston, MA, USA
| |
Collapse
|
32
|
Schmickl CN, Biehl M, Wilson GA, Gajic O. Response. Chest 2016; 148:e194-e195. [PMID: 26621308 DOI: 10.1378/chest.15-0037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Affiliation(s)
- Christopher N Schmickl
- M.E.T.R.I.C. (Multidisciplinary Epidemiology and Translational Research in Intensive Care), Rochester, MN; Mayo Clinic, Rochester, MN; and the University Witten-Herdecke, Witten, Germany.
| | - Michelle Biehl
- M.E.T.R.I.C. (Multidisciplinary Epidemiology and Translational Research in Intensive Care), Rochester, MN; Division of Pulmonary and Critical Care Medicine, and the Department of Pulmonary and Critical Care Medicine, Rochester, MN
| | - Gregory A Wilson
- M.E.T.R.I.C. (Multidisciplinary Epidemiology and Translational Research in Intensive Care), Rochester, MN
| | - Ognjen Gajic
- M.E.T.R.I.C. (Multidisciplinary Epidemiology and Translational Research in Intensive Care), Rochester, MN; Division of Pulmonary and Critical Care Medicine, and the Department of Pulmonary and Critical Care Medicine, Rochester, MN
| |
Collapse
|
33
|
Schmickl CN, Biehl M, Wilson GA, Gajic O. Comparison of hospital mortality and long-term survival in patients with acute lung injury/ARDS vs cardiogenic pulmonary edema. Chest 2015; 147:618-625. [PMID: 25474475 DOI: 10.1378/chest.14-1371] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
BACKGROUND Early differential diagnosis of acute lung injury (ALI) vs cardiogenic pulmonary edema (CPE) is important for selecting the most appropriate therapy, but the prognostic implications of this distinction have not been studied. Accurate prognostic information is essential for providing appropriate informed consent prior to initiation of mechanical ventilation. METHODS This is a long-term follow-up study of a previously established population-based cohort of critically ill adult patients with acute pulmonary edema admitted at a tertiary-care center during 2006 to 2009, in which post hoc expert review had established ALI vs CPE diagnosis. Using logistic and Cox regression, hospital mortality and long-term survival were compared in patients with ALI vs patients with CPE. RESULTS Of 328 patients (ALI = 155, CPE = 173), 240 patients (73%) died during a median follow-up of 160 days. After adjusting for confounders, patients with ALI were significantly more likely to die in the hospital (OR = 4.2, 95% CI = 2.3-7.8, n = 325, P < .001), but among hospital survivors the risk of death during follow-up was the same in both groups (hazard ratio = 1.13, 95% CI = 0.79-1.62, n = 229, P = .50). Independent predictors of mortality included age and APACHE (Acute Physiology and Chronic Health Evaluation) III score. Results were similar when restricting patients with ALI to the subset with ARDS (Berlin definition). In post hoc analyses, the mortality rate in hospital survivors compared with the general US population was significantly higher during the first 2 years but essentially converged by year five. CONCLUSIONS Although hospital mortality is higher in patients with ALI/ARDS compared with patients with CPE, long-term survival is similar in hospital survivors from both groups.
Collapse
Affiliation(s)
- Christopher N Schmickl
- M.E.T.R.I.C. (Multidisciplinary Epidemiology and Translational Research in Intensive Care), Division of Pulmonary and Critical Care Medicine, University Witten-Herdecke, Witten, Germany.
| | - Michelle Biehl
- M.E.T.R.I.C. (Multidisciplinary Epidemiology and Translational Research in Intensive Care), Division of Pulmonary and Critical Care Medicine, Department of Pulmonary and Critical Care Medicine, Mayo Clinic, Rochester, MN
| | - Gregory A Wilson
- Department of Pulmonary and Critical Care Medicine, Mayo Clinic, Rochester, MN
| | - Ognjen Gajic
- Department of Pulmonary and Critical Care Medicine, Mayo Clinic, Rochester, MN
| |
Collapse
|
34
|
Schmickl CN, Pannu S, Al-Qadi MO, Alsara A, Kashyap R, Dhokarh R, Herasevich V, Gajic O. Decision support tool for differential diagnosis of Acute Respiratory Distress Syndrome (ARDS) vs Cardiogenic Pulmonary Edema (CPE): a prospective validation and meta-analysis. Crit Care 2014; 18:659. [PMID: 25432274 PMCID: PMC4277656 DOI: 10.1186/s13054-014-0659-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/21/2014] [Accepted: 11/11/2014] [Indexed: 01/11/2023]
Abstract
Introduction We recently presented a prediction score providing decision support with the often-challenging early differential diagnosis of acute lung injury (ALI) vs cardiogenic pulmonary edema (CPE). To facilitate clinical adoption, our objective was to prospectively validate its performance in an independent cohort. Methods Over 9 months, adult patients consecutively admitted to any intensive care unit of a tertiary-care center developing acute pulmonary edema were identified in real-time using validated electronic surveillance. For eligible patients, predictors were abstracted from medical records within 48 hours of the alert. Post-hoc expert review blinded to the prediction score established gold standard diagnosis. Results Of 1,516 patients identified by electronic surveillance, data were abstracted for 249 patients (93% within 48 hours of disease onset), of which expert review (kappa 0.93) classified 72 as ALI, 73 as CPE and excluded 104 as “other”. With an area under the curve (AUC) of 0.81 (95% confidence interval =0.73 to 0.88) the prediction score showed similar discrimination as in prior cohorts (development AUC = 0.81, P = 0.91; retrospective validation AUC = 0.80, P = 0.92). Hosmer-Lemeshow test was significant (P = 0.01), but across eight previously defined score ranges probabilities of ALI vs CPE were the same as in the development cohort (P = 0.60). Results were the same when comparing acute respiratory distress syndrome (ARDS, Berlin definition) vs CPE. Conclusion The clinical prediction score reliably differentiates ARDS/ALI vs CPE. Pooled results provide precise estimates of the score’s performance which can be used to screen patient populations or to assess the probability of ALI/ARDS vs CPE in specific patients. The score may thus facilitate early inclusion into research studies and expedite prompt treatment. Electronic supplementary material The online version of this article (doi:10.1186/s13054-014-0659-x) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Christopher N Schmickl
- Multidisciplinary Epidemiology and Translational Research in Intensive Care (METRIC), Division of Pulmonary and Critical Care Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA. .,University Witten-Herdecke, Alfred-Herrhausen-Straße 50, 58448, Witten, Germany. .,Harvard School of Public Health, 677 Huntington Avenue, Boston, MA, 02115, USA.
| | - Sonal Pannu
- Multidisciplinary Epidemiology and Translational Research in Intensive Care (METRIC), Division of Pulmonary and Critical Care Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA.
| | - Mazen O Al-Qadi
- Multidisciplinary Epidemiology and Translational Research in Intensive Care (METRIC), Division of Pulmonary and Critical Care Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA.
| | - Anas Alsara
- Multidisciplinary Epidemiology and Translational Research in Intensive Care (METRIC), Division of Pulmonary and Critical Care Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA.
| | - Rahul Kashyap
- Multidisciplinary Epidemiology and Translational Research in Intensive Care (METRIC), Division of Pulmonary and Critical Care Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA.
| | - Rajanigandha Dhokarh
- Multidisciplinary Epidemiology and Translational Research in Intensive Care (METRIC), Division of Pulmonary and Critical Care Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA. .,Lahey Clinic, Pulmonary and Critical Care, 41 Burlington Mall Road, Burlington, MA, 01805, USA.
| | - Vitaly Herasevich
- Multidisciplinary Epidemiology and Translational Research in Intensive Care (METRIC), Division of Pulmonary and Critical Care Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA.
| | - Ognjen Gajic
- Multidisciplinary Epidemiology and Translational Research in Intensive Care (METRIC), Division of Pulmonary and Critical Care Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA.
| |
Collapse
|
35
|
Dhokarh R, Li G, Schmickl CN, Kashyap R, Assudani J, Limper AH, Gajic O. Drug-associated acute lung injury: a population-based cohort study. Chest 2013; 142:845-850. [PMID: 22539646 DOI: 10.1378/chest.11-2103] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND A number of drugs have been reported as risk factors for acute lung injury (ALI) and ARDS. However, evidence is largely limited to case reports, and there is a paucity of data on the incidence and outcome of drug-associated ALI (DALI). METHODS Using a population-based retrospective cohort study design, critically ill patients with a diagnosis of ALI were studied. These patients were classified as having DALI or non-DALI, based on whether they were exposed to prespecified drugs prior to development of ALI. Outcomes were compared between the two groups and frequencies and incidences reported. RESULTS Among 514 patients with ALI, 49 (9.5%) had DALI with an estimated population-based incidence of 6.6 (95% CI, 4.8-8.5) per 100,000 person-years. Of the 49 patients with DALI,36 received chemotherapeutic/antiinflammatory agents, and 14 received amiodarone. Twelve patients had no additional risk factors for ALI (probable DALI), whereas 37 had alternative risk factors (possible DALI). Patients with and without DALI had similar baseline characteristics. However, the APACHE (Acute Physiology and Chronic Health Evaluation) III scores (median, 83 vs 70, P 5 .03), ICU mortality (35% vs 20%, P 5 .03), and hospital mortality (63% vs 32%, P , .001)were significantly higher in the DALI group compared with those of the non-DALI group. Hospital mortality remained significantly higher after adjusting for APACHE III score on admission and the presence of malignancy in logistic regression analysis (OR, 2.8; 95% CI, 1.3-6.4; P 5 .009). CONCLUSIONS Drugs are important risk factors for ALI, and recognizing them as such may have important implications for early identification of patients at risk, discontinuation of the offending agent, and prognosis.
Collapse
Affiliation(s)
- Rajanigandha Dhokarh
- Multidisciplinary Epidemiology and Translational Research in Intensive Care (METRIC) group, Rochester, MN; Department of Pulmonary and Critical Care Medicine, Lahey Clinic, Burlington, MA.
| | - Guangxi Li
- Multidisciplinary Epidemiology and Translational Research in Intensive Care (METRIC) group, Rochester, MN; Department of Pulmonary Medicine, Guang'anmen Hospital, China Academy of Chinese Medical Science, Beijing, China
| | - Christopher N Schmickl
- Multidisciplinary Epidemiology and Translational Research in Intensive Care (METRIC) group, Rochester, MN; University Witten-Herdecke, Witten, Germany
| | - Rahul Kashyap
- Multidisciplinary Epidemiology and Translational Research in Intensive Care (METRIC) group, Rochester, MN
| | - Jyoti Assudani
- Multidisciplinary Epidemiology and Translational Research in Intensive Care (METRIC) group, Rochester, MN
| | - Andrew H Limper
- Division of Pulmonary and Critical Care Medicine, Mayo Clinic, Rochester, MN
| | - Ognjen Gajic
- Multidisciplinary Epidemiology and Translational Research in Intensive Care (METRIC) group, Rochester, MN
| |
Collapse
|
36
|
Schmickl CN, Shahjehan K, Li G, Dhokarh R, Kashyap R, Janish C, Alsara A, Jaffe AS, Hubmayr RD, Gajic O. Decision support tool for early differential diagnosis of acute lung injury and cardiogenic pulmonary edema in medical critically ill patients. Chest 2011; 141:43-50. [PMID: 22030803 DOI: 10.1378/chest.11-1496] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND At the onset of acute hypoxic respiratory failure, critically ill patients with acute lung injury (ALI) may be difficult to distinguish from those with cardiogenic pulmonary edema (CPE). No single clinical parameter provides satisfying prediction. We hypothesized that a combination of those will facilitate early differential diagnosis. METHODS In a population-based retrospective development cohort, validated electronic surveillance identified critically ill adult patients with acute pulmonary edema. Recursive partitioning and logistic regression were used to develop a decision support tool based on routine clinical information to differentiate ALI from CPE. Performance of the score was validated in an independent cohort of referral patients. Blinded post hoc expert review served as gold standard. RESULTS Of 332 patients in a development cohort, expert reviewers (κ, 0.86) classified 156 as having ALI and 176 as having CPE. The validation cohort had 161 patients (ALI = 113, CPE = 48). The score was based on risk factors for ALI and CPE, age, alcohol abuse, chemotherapy, and peripheral oxygen saturation/Fio(2) ratio. It demonstrated good discrimination (area under curve [AUC] = 0.81; 95% CI, 0.77-0.86) and calibration (Hosmer-Lemeshow [HL] P = .16). Similar performance was obtained in the validation cohort (AUC = 0.80; 95% CI, 0.72-0.88; HL P = .13). CONCLUSIONS A simple decision support tool accurately classifies acute pulmonary edema, reserving advanced testing for a subset of patients in whom satisfying prediction cannot be made. This novel tool may facilitate early inclusion of patients with ALI and CPE into research studies as well as improve and rationalize clinical management and resource use.
Collapse
Affiliation(s)
- Christopher N Schmickl
- Multidisciplinary Epidemiology and Translational Research in Intensive Care (METRIC), Mayo Clinic, Rochester, MN; University Witten-Herdecke, Witten, Germany.
| | - Khurram Shahjehan
- Multidisciplinary Epidemiology and Translational Research in Intensive Care (METRIC), Mayo Clinic, Rochester, MN
| | - Guangxi Li
- Multidisciplinary Epidemiology and Translational Research in Intensive Care (METRIC), Mayo Clinic, Rochester, MN; Pulmonary Division, Department of Guang'anmen Hospital, China Academy of Chinese Medical Science, Beijing, China
| | - Rajanigandha Dhokarh
- Multidisciplinary Epidemiology and Translational Research in Intensive Care (METRIC), Mayo Clinic, Rochester, MN; Department of Pulmonary and Critical Care Medicine, Lahey Clinic, Burlington, MA
| | - Rahul Kashyap
- Multidisciplinary Epidemiology and Translational Research in Intensive Care (METRIC), Mayo Clinic, Rochester, MN
| | - Christopher Janish
- Multidisciplinary Epidemiology and Translational Research in Intensive Care (METRIC), Mayo Clinic, Rochester, MN
| | - Anas Alsara
- Multidisciplinary Epidemiology and Translational Research in Intensive Care (METRIC), Mayo Clinic, Rochester, MN
| | | | - Rolf D Hubmayr
- Division of Pulmonary and Critical Care Medicine, Mayo Clinic, Rochester, MN
| | - Ognjen Gajic
- Multidisciplinary Epidemiology and Translational Research in Intensive Care (METRIC), Mayo Clinic, Rochester, MN
| |
Collapse
|