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Lo Mauro A, Tringali G, Codecasa F, Abbruzzese L, Sartorio A, Aliverti A. Pulmonary and chest wall function in obese adults. Sci Rep 2023; 13:17753. [PMID: 37852999 PMCID: PMC10585005 DOI: 10.1038/s41598-023-44222-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 10/05/2023] [Indexed: 10/20/2023] Open
Abstract
Obesity is frequently associated with breathing disorders. To investigate if and how the highest levels of obesity impact respiratory function, 17 subjects with obesity (median age: 49 years; BMI: 39.7 kg/m2, 8 females) and 10 normal-weighted subjects (49 years; 23.9 kg/m2, 5 females) were studied. The abdominal volume occupied 41% in the obese group, being higher (p < 0.001) than the normal-weighted group (31%), indicating accumulation of abdominal fat. Restrictive lung defect was present in 17% of subjects with obesity. At rest in the supine position, subjects with obesity breathed with higher minute ventilation (11.9 L/min) and lower ribcage contribution (5.7%) than normal weighted subjects (7.5 L/min, p = 0.001 and 31.1%, p = 0.003, respectively), thus indicating thoracic restriction. Otherwise healthy obesity might not be characterized by a systematic restrictive lung pattern. Despite this, another sign of restriction could be poor thoracic expansion at rest in the supine position, resulting in increased ventilation. Class 3 obesity made respiratory rate further increased. Opto-electronic plethysmography and its thoraco-abdominal analysis of awake breathing add viable and interesting information in subjects with obesity that were complementary to pulmonary function tests. In addition, OEP is able to localize the restrictive effect of obesity.
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Affiliation(s)
- Antonella Lo Mauro
- Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, Piazza L. Da Vinci, 20133, Milan, Italy.
| | - Gabriella Tringali
- Experimental Laboratory for Auxo-Endocrinological Research, Istituto Auxologico Italiano, IRCCS, Piancavallo-Verbania, Italy
| | - Franco Codecasa
- Division of Pneumological Rehabilitation, Istituto Auxologico Italiano, IRCCS, Piancavallo-Verbania, Italy
| | - Laura Abbruzzese
- Division of Eating and Nutrition Disorders, Istituto Auxologico Italiano, IRCCS, Piancavallo-Verbania, Italy
| | - Alessandro Sartorio
- Experimental Laboratory for Auxo-Endocrinological Research, Istituto Auxologico Italiano, IRCCS, Piancavallo-Verbania, Italy
- Experimental Laboratory for Auxo-Endocrinological Research, Istituto Auxologico Italiano, IRCCS, Milan, Italy
| | - Andrea Aliverti
- Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, Piazza L. Da Vinci, 20133, Milan, Italy
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2
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Shapiro I, Stein J, MacRae C, O'Reilly M. Pulse oximetry values from 33,080 participants in the Apple Heart & Movement Study. NPJ Digit Med 2023; 6:134. [PMID: 37500721 PMCID: PMC10374661 DOI: 10.1038/s41746-023-00851-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Accepted: 05/24/2023] [Indexed: 07/29/2023] Open
Abstract
Wearable devices that include pulse oximetry (SpO2) sensing afford the opportunity to capture oxygen saturation measurements from large cohorts under naturalistic conditions. We report here a cross-sectional analysis of 72 million SpO2 values collected from 33,080 individual participants in the Apple Heart and Movement Study, stratified by age, sex, body mass index (BMI), home altitude, and other demographic variables. Measurements aggregated by hour of day into 24-h SpO2 profiles exhibit similar circadian patterns for all demographic groups, being approximately sinusoidal with nadir near midnight local time, zenith near noon local time, and mean 0.8% lower saturation during overnight hours. Using SpO2 measurements averaged for each subject into mean nocturnal and daytime SpO2 values, we employ multivariate ordinary least squares regression to quantify population-level trends according to demographic factors. For the full cohort, regression coefficients obtained from models fit to daytime SpO2 are in close quantitative agreement with the corresponding values from published reference models for awake arterial oxygen saturation measured under controlled laboratory conditions. Regression models stratified by sex reveal significantly different age- and BMI-dependent SpO2 trends for females compared with males, although constant terms and regression coefficients for altitude do not differ between sexes. Incorporating categorical variables encoding self-reported race/ethnicity into the full-cohort regression models identifies small but statistically significant differences in daytime SpO2 (largest coefficient corresponding to 0.13% lower SpO2, for Hispanic study participants compared to White participants), but no significant differences between groups for nocturnal SpO2. Additional stratified analysis comparing regression models fit independently to subjects in each race/ethnicity group is suggestive of small differences in age- and sex-dependent trends, but indicates no significant difference in constant terms between any race/ethnicity groups for either daytime or nocturnal SpO2. The large diverse study population and study design employing automated background SpO2 measurements spanning the full 24-h circadian cycle enables the establishment of healthy population reference trends outside of clinical settings.
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Affiliation(s)
| | | | - Calum MacRae
- Cardiovascular Medicine Division, Brigham and Women's Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
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3
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Marshall C, Estes SJ. Reproductive Surgery in Females with Obesity: Reproductive Consequences of Obesity and Applications for Surgical Care. Semin Reprod Med 2023; 41:97-107. [PMID: 37967852 DOI: 10.1055/s-0043-1776915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2023]
Abstract
Obesity is the most common medical problem in women of reproductive age. The surgical applications for this population, many of who are interested in current or future fertility, are critical to safe and effective evaluation and management of issues that impact the reproductive system. As rates of obesity continue to rise worldwide, it is projected that one in two individuals will have obesity by 2030 leading to increasing numbers of individuals affected by a disease process that has implications for their gynecologic surgical care, fertility-related assessment, and infertility treatment. Offering patients with obesity access to safe reproductive surgery is a cornerstone of reproductive autonomy. This review will summarize current recommendations regarding surgical concepts for the operating room, office hysteroscopy, oocyte retrieval, and embryo transfer in female patients with obesity.
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Affiliation(s)
- Ciara Marshall
- Department of Obstetrics and Gynecology, Penn State Milton S. Hershey Medical Center, Hershey, Pennsylvania
| | - Stephanie J Estes
- Department of Obstetrics and Gynecology, Penn State Milton S. Hershey Medical Center, Hershey, Pennsylvania
- Division of Reproductive Endocrinology and Infertility, Penn State Milton S. Hershey Medical Center, Hershey, Pennsylvania
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4
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Stanojevic S, Kaminsky DA, Miller MR, Thompson B, Aliverti A, Barjaktarevic I, Cooper BG, Culver B, Derom E, Hall GL, Hallstrand TS, Leuppi JD, MacIntyre N, McCormack M, Rosenfeld M, Swenson ER. ERS/ATS technical standard on interpretive strategies for routine lung function tests. Eur Respir J 2022; 60:2101499. [PMID: 34949706 DOI: 10.1183/13993003.01499-2021] [Citation(s) in RCA: 345] [Impact Index Per Article: 172.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Accepted: 11/18/2021] [Indexed: 01/21/2023]
Abstract
BACKGROUND Appropriate interpretation of pulmonary function tests (PFTs) involves the classification of observed values as within/outside the normal range based on a reference population of healthy individuals, integrating knowledge of physiological determinants of test results into functional classifications and integrating patterns with other clinical data to estimate prognosis. In 2005, the American Thoracic Society (ATS) and European Respiratory Society (ERS) jointly adopted technical standards for the interpretation of PFTs. We aimed to update the 2005 recommendations and incorporate evidence from recent literature to establish new standards for PFT interpretation. METHODS This technical standards document was developed by an international joint Task Force, appointed by the ERS/ATS with multidisciplinary expertise in conducting and interpreting PFTs and developing international standards. A comprehensive literature review was conducted and published evidence was reviewed. RESULTS Recommendations for the choice of reference equations and limits of normal of the healthy population to identify individuals with unusually low or high results are discussed. Interpretation strategies for bronchodilator responsiveness testing, limits of natural changes over time and severity are also updated. Interpretation of measurements made by spirometry, lung volumes and gas transfer are described as they relate to underlying pathophysiology with updated classification protocols of common impairments. CONCLUSIONS Interpretation of PFTs must be complemented with clinical expertise and consideration of the inherent biological variability of the test and the uncertainty of the test result to ensure appropriate interpretation of an individual's lung function measurements.
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Affiliation(s)
- Sanja Stanojevic
- Dept of Community Health and Epidemiology, Dalhousie University, Halifax, NS, Canada
| | - David A Kaminsky
- Pulmonary Disease and Critical Care Medicine, University of Vermont Larner College of Medicine, Burlington, VT, USA
| | - Martin R Miller
- Institute of Applied Health Research, University of Birmingham, Birmingham, UK
| | - Bruce Thompson
- Physiology Service, Dept of Respiratory Medicine, The Alfred Hospital and School of Health Sciences, Swinburne University of Technology, Melbourne, Australia
| | - Andrea Aliverti
- Dept of Electronics, Information and Bioengineering (DEIB), Politecnico di Milano, Milan, Italy
| | - Igor Barjaktarevic
- Division of Pulmonary and Critical Care Medicine, University of California, Los Angeles, CA, USA
| | - Brendan G Cooper
- Lung Function and Sleep, Queen Elizabeth Hospital, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
| | - Bruce Culver
- Dept of Medicine, Division of Pulmonary, Critical Care and Sleep Medicine, University of Washington, Seattle, WA, USA
| | - Eric Derom
- Dept of Respiratory Medicine, Ghent University, Ghent, Belgium
| | - Graham L Hall
- Children's Lung Health, Wal-yan Respiratory Research Centre, Telethon Kids Institute and School of Allied Health, Faculty of Health Science, Curtin University, Bentley, Australia
| | - Teal S Hallstrand
- Dept of Medicine, Division of Pulmonary, Critical Care and Sleep Medicine, University of Washington, Seattle, WA, USA
| | - Joerg D Leuppi
- University Clinic of Medicine, Cantonal Hospital Basel, Liestal, Switzerland
- University Clinic of Medicine, University of Basel, Basel, Switzerland
| | - Neil MacIntyre
- Division of Pulmonary, Allergy, and Critical Care Medicine, Dept of Medicine, Duke University Medical Center, Durham, NC, USA
| | - Meredith McCormack
- Pulmonary Function Laboratory, Pulmonary and Critical Care Medicine, Johns Hopkins University, Baltimore, MD, USA
| | | | - Erik R Swenson
- Dept of Medicine, Division of Pulmonary, Critical Care and Sleep Medicine, University of Washington, Seattle, WA, USA
- VA Puget Sound Health Care System, Seattle, WA, USA
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5
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Smith NA, Martin G, Marginson B. Preoperative assessment and prehabilitation in patients with obesity undergoing non-bariatric surgery: A systematic review. J Clin Anesth 2022; 78:110676. [DOI: 10.1016/j.jclinane.2022.110676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 01/08/2022] [Accepted: 01/31/2022] [Indexed: 11/17/2022]
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Abstract
PURPOSE OF REVIEW Obesity is a major health epidemic, with the prevalence reaching ∼40% in the United States in recent years. It is associated with increased risk of hypertension, diabetes, heart disease, stroke, obstructive sleep apnea (OSA), and gynecologic conditions requiring surgery. Those comorbidities, in addition to the physiologic changes associated with obesity, lead to increased risk of perioperative complications. The purpose of this review is to highlight the anesthetic considerations for robotic assisted hysterectomy in obese patients. RECENT FINDINGS In the general gynecologic population, minimally invasive surgery is associated with less postoperative fever, pain, hospital length of stay, total cost of care and an earlier return to normal function. This also applies to robotic surgery in obese patients, which is on the rise. The physiologic changes of obesity bring different anesthetic challenges, including airway management and intraoperative ventilation. Vascular access and intraoperative blood pressure monitoring can also be challenging and require modifications. Optimizing analgesia with a focus on opioid-sparing strategies is crucial due to the increased prevalence of OSA in this patient population. SUMMARY Anesthesia for obese patients undergoing robotic hysterectomy is challenging and must take into consideration the anatomic and physiologic changes associated with obesity.
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Arismendi E, Bantulà M, Perpiñá M, Picado C. Effects of Obesity and Asthma on Lung Function and Airway Dysanapsis in Adults and Children. J Clin Med 2020; 9:jcm9113762. [PMID: 33266383 PMCID: PMC7700658 DOI: 10.3390/jcm9113762] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 11/19/2020] [Accepted: 11/20/2020] [Indexed: 01/31/2023] Open
Abstract
Obesity increases the risk of developing asthma in children and adults. Obesity is associated with different effects on lung function in children and adults. In adults, obesity has been associated with reduced lung function resulting from a relatively small effect on forced expiratory volume in 1 s (FEV1) and forced vital capacity (FVC), with the FEV1/FVC ratio remaining unchanged or mildly increased (restrictive pattern). In contrast, in children, obesity is associated with normal or higher FEV1 and FVC but a lower FEV1/FVC ratio (obstructive pattern). This anomaly has recently been associated with a phenomenon known as dysanapsis which results from a disproportionate growth between lung parenchyma size and airway calibre. The mechanisms that promote disproportionate lung parenchyma growth compared with airways in obese children remain to be elucidated. Obesity and dysanapsis in asthma patients might contribute to asthma morbidity by increasing airway obstruction, airway hyper-reactivity and airway inflammation. Obesity and dysanapsis in asthma patients are associated with increased medication use, more emergency department visits, hospitalizations and systemic corticosteroid burst than patients with normal weight. Dysanapsis may explain the reduced response to asthma medications in obese children. Weight loss results in a significant improvement in lung function, airway reactivity and asthma control. Whether these improvements are associated with the changes in the dysanaptic alteration is as yet unclear.
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Affiliation(s)
- Ebymar Arismendi
- Servei de Pneumologia, Hospital Clínic de Barcelona, Universitat de Barcelona, 08036 Barcelona, Spain; (E.A.); (M.B.)
- Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain
- Centro de Investigaciones en Red de Enfermedades Respiratorias (CIBERES), 08036 Barcelona, Spain
| | - Marina Bantulà
- Servei de Pneumologia, Hospital Clínic de Barcelona, Universitat de Barcelona, 08036 Barcelona, Spain; (E.A.); (M.B.)
- Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain
- Centro de Investigaciones en Red de Enfermedades Respiratorias (CIBERES), 08036 Barcelona, Spain
| | | | - César Picado
- Servei de Pneumologia, Hospital Clínic de Barcelona, Universitat de Barcelona, 08036 Barcelona, Spain; (E.A.); (M.B.)
- Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain
- Centro de Investigaciones en Red de Enfermedades Respiratorias (CIBERES), 08036 Barcelona, Spain
- Correspondence: ; Tel.:+34-679473675; Fax: +34-932272634
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8
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Marillier M, Bernard AC, Reimao G, Castelli G, Alqurashi H, O'Donnell DE, Neder JA. Breathing at Extremes. Chest 2020; 158:1576-1585. [DOI: 10.1016/j.chest.2020.04.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2020] [Revised: 03/30/2020] [Accepted: 04/01/2020] [Indexed: 10/24/2022] Open
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9
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Martani M, Bourahli MK, Bougrida M, Ben Saad H. Plethysmographic data and profile of North-African patients with severe obstructive sleep apnea treated with continuous positive airway pressure. Expert Rev Respir Med 2020; 15:267-275. [PMID: 32938253 DOI: 10.1080/17476348.2021.1823834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
OBJECTIVES In obstructive sleep apnea (OSA) patients, the frequencies of the different ventilatory defects are unknown and the studies examining their plethysmographic profiles and/or pulmonary function test data have contradictory results. The main aim of this prospective study was to establish the plethysmographic profile of severe OSA patients treated with continuous positive airway pressure (CPAP). METHODS 100 (33 females) clinically consecutive stable patients with severe OSA treated with CPAP were included. Anthropometric, polysomnographic, and pulmonary function test data were collected. The following definitions were applied: large airways obstructive ventilatory defect (LAOVD): (FEV1/SVC or FEV1/FVC < lower limit of normal (LLN), small airways obstructive ventilatory defect (SAOVD): (FEV1/FVC and FVC) > LLN and maximal mid-expiratory flow (MMEF) < LLN, restrictive ventilatory defect (RVD): total lung capacity (TLC) < LLN, lung-hyperinflation: residual volume > upper limit of-normal, and nonspecific ventilatory defect (NSVD): (FVC and FEV1) < LLN and TLC > LLN and (FEV1/SVC or FEV1/FVC) > LLN. RESULTS The plethysmographic profile of OSA patients included RVD (73%), SAOVD (50%), LAOVD (16%), mixed-VD (11%), lung-hyperinflation (11%), and NSVD (2%). CONCLUSION The plethysmographic profile of OSA patients was dominated by the presence of an RVD.
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Affiliation(s)
- Mehdi Martani
- Département de Physiologie, Faculté de Médecine de Constantine, Université Constantine 3 , Constantine, Algeria.,Service de Physiologie Clinique et Explorations Fonctionnelles, CHU Dr Ben Badis Constantine , Constantine, Algeria.,Laboratoire de Recherche des Maladies Métaboliques, Université Constantine 3 , Constantine, Algeria
| | - Mohamed Kheireddine Bourahli
- Département de Physiologie, Faculté de Médecine de Constantine, Université Constantine 3 , Constantine, Algeria.,Service de Physiologie Clinique et Explorations Fonctionnelles, CHU Dr Ben Badis Constantine , Constantine, Algeria.,Laboratoire de Recherche des Maladies Métaboliques, Université Constantine 3 , Constantine, Algeria
| | - Mohamed Bougrida
- Département de Physiologie, Faculté de Médecine de Constantine, Université Constantine 3 , Constantine, Algeria.,Service de Physiologie Clinique et Explorations Fonctionnelles, CHU Dr Ben Badis Constantine , Constantine, Algeria.,Laboratoire de Recherche des Maladies Métaboliques, Université Constantine 3 , Constantine, Algeria
| | - Helmi Ben Saad
- Laboratory of Physiology and Functional Explorations, Farhat HACHED Hospital , Sousse, Tunisia.,Heart Failure (LR12SP09) Research Laboratory, Farhat HACHED Hospital , Sousse, Tunisia.,Université de Sousse, Faculté de Médecine de Sousse, Laboratoire de Physiologie , Sousse, Tunisie
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10
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Neder JA, Berton DC, O'Donnell DE. The Lung Function Laboratory to Assist Clinical Decision-making in Pulmonology: Evolving Challenges to an Old Issue. Chest 2020; 158:1629-1643. [PMID: 32428514 DOI: 10.1016/j.chest.2020.04.064] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 04/21/2020] [Accepted: 04/26/2020] [Indexed: 12/17/2022] Open
Abstract
The lung function laboratory frequently provides relevant information to the practice of pulmonology. Clinical interpretation of pulmonary function and exercise tests, however, has been complicated more recently by temporal changes in demographic characteristics (higher life expectancy), anthropometric attributes (increased obesity prevalence), and the surge of polypharmacy in a sedentary population with multiple chronic degenerative diseases. In this narrative review, we concisely discuss some key challenges to test interpretation that have been affected by these epidemiologic shifts: (a) the confounding effects of advanced age and severe obesity, (b) the contemporary controversies in the diagnosis of obstruction (including asthma and/or COPD), (c) the importance of considering the diffusing capacity of the lung for carbon monoxide (Dlco)/"accessible" alveolar volume (carbon monoxide transfer coefficient) in association with Dlco to uncover the causes of impaired gas exchange, and (d) the modern role of the pulmonary function laboratory (including cardiopulmonary exercise testing) in the investigation of undetermined dyspnea. Following a Bayesian perspective, we suggest interpretative algorithms that consider the pretest probability of abnormalities as indicated by additional clinical information. We, therefore, adopt a pragmatic approach to help the practicing pulmonologist to apply the information provided by the lung function laboratory to the care of individual patients.
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Affiliation(s)
- J Alberto Neder
- Pulmonary Function Laboratory and Respiratory Investigation Unit, Division of Respirology, Department of Medicine, Kingston Health Science Center, Queen's University, Kingston, ON, Canada.
| | - Danilo C Berton
- Division of Respirology, Department of Medicine, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Denis E O'Donnell
- Pulmonary Function Laboratory and Respiratory Investigation Unit, Division of Respirology, Department of Medicine, Kingston Health Science Center, Queen's University, Kingston, ON, Canada
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11
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Carlsson M, Berthelsen O, Fagevik Olsén M. Effects of a prolonged intervention of breathing exercises after cardiac surgery - a randomised controlled trial. EUROPEAN JOURNAL OF PHYSIOTHERAPY 2019. [DOI: 10.1080/21679169.2018.1531923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Maria Carlsson
- Department of Physical Therapy, Sahlgrenska University Hospital, Gothenburg, Sweden
- Department of Physiotherapy, Institute of Neuroscience and Physiology, University of Gothenburg, Gothenburg, Sweden
| | - Ole Berthelsen
- Department of Physical Therapy, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Monika Fagevik Olsén
- Department of Physical Therapy, Sahlgrenska University Hospital, Gothenburg, Sweden
- Department of Physiotherapy, Institute of Neuroscience and Physiology, University of Gothenburg, Gothenburg, Sweden
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12
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Trinh HKT, Lee SH, Cao TBT, Park HS. Asthma pharmacotherapy: an update on leukotriene treatments. Expert Rev Respir Med 2019; 13:1169-1178. [PMID: 31544544 DOI: 10.1080/17476348.2019.1670640] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Introduction: Asthma is a chronic inflammatory disease of the airways with a large heterogeneity of clinical phenotypes. There has been increasing interest regarding the role of cysteinyl leukotriene (LT) and leukotriene receptor antagonists (LTRA) in asthma treatment.Areas covered: This review summarized the data (published in PubMed during 1984-2019) regarding LTRA treatment in asthma and LTs-related airway inflammation mechanisms. Involvement of LTs C4/D4/E4 has been demonstrated in the several aspects of airway inflammation and remodeling. Novel pathways related to LTE4, the most potent mediator, and its respective receptors have recently been studied. Antagonists against cysteinyl leukotriene receptor (CysLTR) type 1, including montelukast, pranlukast and zafirlukast, have been widely prescribed in clinical practices; however, some clinical trials have shown insignificant responses to LTRAs in adult asthmatics, while some phenotypes of adult asthma showed more favorable responses to LTRAs including aspirin-exacerbated respiratory disease, elderly asthma, asthma associated with smoking, obesity and allergic rhinitis.Expert opinion: Further investigations are needed to understand the role of LTs in airway inflammation and remodeling of the asthmatic airways. There is a lack of biomarkers to predict responsiveness to LTRA, especially in adult asthmatics. Besides CysLTR1 antagonists, targets aiming other LT pathways should be considered.
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Affiliation(s)
- Hoang Kim Tu Trinh
- Department of Allergy and Clinical Immunology, Ajou University Medical Center, Suwon, South Korea.,Center for Molecular Biomedicine, University of Medicine and Pharmacy at Ho Chi Minh city, Ho Chi Minh city, Vietnam
| | - So-Hee Lee
- Department of Allergy and Clinical Immunology, Ajou University Medical Center, Suwon, South Korea
| | | | - Hae-Sim Park
- Department of Allergy and Clinical Immunology, Ajou University Medical Center, Suwon, South Korea.,Department of Biomedicine, Ajou University, Suwon, South Korea
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13
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Bokov P, Delclaux C. [The impact of obesity on respiratory function]. Rev Mal Respir 2019; 36:1057-1063. [PMID: 31522948 DOI: 10.1016/j.rmr.2019.07.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Accepted: 07/06/2019] [Indexed: 01/28/2023]
Abstract
The respiratory impact of obesity can be both symptomatic (resting and exertional breathlessness) and functional (pulmonary function at rest and on exercise). The prevalence of breathlessness is increased in adult obese individuals, ∼50% at rest and ∼75% on exertion (mMRC score>0). Pulmonary function abnormalities in obese adults include reduced functional residual capacity (FRC) and expiratory residual volume (ERV), and less frequently reduced total lung capacity (a restrictive defect, with TLC below the 5th percentile of predicted is present in around 15% in severe obese adults), with normal residual volume (RV). Airflows are barely affected by obesity, but bronchial hyperresponsiveness (BHR) is very prevalent, which may be due to the loss of bronchoprotective effect of deep inspiration in obesity (mechanical pathophysiology of BHR). In children, the modifications of lung volumes seen are quite different: TLC is normal while FRC and RV are reduced, explaining the increase in FVC. FEV1/FVC is therefore reduced by obesity, without true airflow obstruction (dysanaptic growth). Resting oxygen consumption (V'O2) is increased due to obesity and normally increases with exercise. Maximum V'O2 is normal or weakly reduced in obese patients; on the other hand, the increase in respiratory load increases the oxygen cost of ventilation, which tends to be rapid, both at rest and during exertion. Finally, it should be noted that there is only limited statistical correlation between exercise dyspnoea and respiratory function abnormalities in obesity.
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Affiliation(s)
- P Bokov
- Service de physiologie pédiatrique, centre pédiatrique des pathologies du sommeil, hôpital Robert-Debré, AP-HP, 48, boulevard Sérurier, 75019 Paris, France; Université Paris-Diderot, Sorbonne Paris Cité, faculté de médecine, 75018 Paris, France; Inserm, UMR1141, 75019 Paris, France
| | - C Delclaux
- Service de physiologie pédiatrique, centre pédiatrique des pathologies du sommeil, hôpital Robert-Debré, AP-HP, 48, boulevard Sérurier, 75019 Paris, France; Université Paris-Diderot, Sorbonne Paris Cité, faculté de médecine, 75018 Paris, France; Inserm, UMR1141, 75019 Paris, France.
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14
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Challenges of Robotic Gynecologic Surgery in Morbidly Obese Patients and How to Optimize Success. Curr Pain Headache Rep 2019; 23:51. [DOI: 10.1007/s11916-019-0788-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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15
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Body Fat Percentage in Relation to Lung Function in Individuals with Normal Weight Obesity. Sci Rep 2019; 9:3066. [PMID: 31217470 PMCID: PMC6584631 DOI: 10.1038/s41598-019-38804-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Accepted: 12/19/2018] [Indexed: 01/04/2023] Open
Abstract
Accumulating evidence indicates the association between obesity and lung function. However, no previous study has examined whether obesity affects lung function in normal weight participants with high body fat. We hypothesized that subjects with normal weight obesity (NWO) were inversely associated with lung function in Taiwan. The study sample was composed of participants who attended health examinations at the Tri-Service General Hospital from 2010 to 2016. A total of 7801 eligible participants who were classified as NWO were divided into quartiles by percentage body fat (PBF), which was measured by bioelectrical impedance analysis (BIA). A multivariable linear regression was performed to assess the association between PBF quartiles and pulmonary function. The relationship between PBF and the presence of obstructive and restrictive lung diseases was analyzed by a logistic regression. PBF quartiles were closely associated with reduced forced expiratory volume in one second (FEV1) and forced vital capacity (FVC) in all adjusted models. This relationship remained significant in the male population, and a dose-dependent effect was observed. Increased PBF was associated with increased risks for the presence of restrictive lung diseases. These results presented a novel finding that body fat exhibited an inverse association with pulmonary function in NWO subjects. More comprehensive management of subjects with normal weight but high body fat, which might contribute to metabolic dysfunction and impaired pulmonary function, is needed.
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Abu Yazed MM, Ahmed SA. Deep versus moderate neuromuscular block in laparoscopic bariatric surgeries: effect on surgical conditions and pulmonary complications. EGYPTIAN JOURNAL OF ANAESTHESIA 2019. [DOI: 10.1080/11101849.2019.1625506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
Affiliation(s)
- Mohamed M. Abu Yazed
- Department of Anesthesiology and Intensive Care, Faculty of Medicine, Tanta University, Tanta, Egypt
| | - Sameh Abdelkhalik Ahmed
- Department of Anesthesiology and Intensive Care, Faculty of Medicine, Tanta University, Tanta, Egypt
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Yamaguchi K, Omori H, Tsuji T, Aoshiba K. Classical regression equations of spirometric parameters are not applicable for diagnosing spirometric abnormalities in adipotic adults. World J Respirol 2018; 8:1-12. [DOI: 10.5320/wjr.v8.i1.1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 09/29/2018] [Accepted: 11/14/2018] [Indexed: 02/06/2023] Open
Abstract
The prevalence of overweighing and obese adults (defined as “adipotic” adults), has markedly increased over the world. A remarkable increase in the adipotic population urgently needs developing the regression equations for predicting spirometric parameters (SPs), which are specifically applicable to adipotic adults. Unfortunately, however, the reliable equations suitable for adipotic adults have not been reported to date. Recently, Yamaguchi et al have proposed the quantitative method to estimate the effects of adiposity on deciding the SPs incorporating with age-specific contributions of various explanatory, independent variables such as age (A), standing height (H), body weight (BW), and fat fraction of body mass (F). Extending the method proposed by Yamaguchi et al, we attempted to elaborate the novel regression equations applicable for diagnosing the spirometric abnormality in adipotic adults. For accomplishing this purpose, never-smoking, adipotic adults with body mass index (BMI) over 25 kg/m2 and no respiratory illness were recruited from the general population in Japan (n = 3696, including men: 1890 and women: 1806). Introducing the four explanatory variables of A, H, BW, and F, gender-specific and age-dependent regression equations that allowed for prescribing the SPs in adipotic adults were constructed. Comparing the results obtained for non-adipotic adults (i.e., those with normal BMI), the negative or positive impact of height on SPs was preserved in adipotic adults, as well. However, the negative impact of age on SPs was blunted in adipotic men and the positive effect of BW on SPs was impeded in adipotic men and women. The fat fraction of body mass-elicited negative impact on SPs vanished in adipotic women. These results indicate that the regression equations of SPs for adipotic adults differ significantly from those for non-adipotic adults, leading to the conclusion that the regression equations for non-adipotic adults should not be used while judging the spirometric abnormalities in adipotic adults.
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Affiliation(s)
- Kazuhiro Yamaguchi
- Department of Respiratory Medicine, Tokyo Medical University, Tokyo 160-0023, Japan
| | - Hisamitsu Omori
- Department of Biomedical Laboratory Sciences, Kumamoto University, Kumamoto 860-8556, Japan
| | - Takao Tsuji
- Department of Respiratory Medicine, Tokyo Medical University, Tokyo 160-0023, Japan
| | - Kazutetsu Aoshiba
- Department of Respiratory Medicine, Tokyo Medical University, Ibaraki Medical Center, Ibaraki 300-0395, Japan
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18
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Baete S, Vercruysse G, Vander Laenen M, De Vooght P, Van Melkebeek J, Dylst D, Beran M, Van Zundert J, Heylen R, Boer W, Van Boxstael S, Fret T, Verhelst H, De Deyne C, Jans F, Vanelderen P. The Effect of Deep Versus Moderate Neuromuscular Block on Surgical Conditions and Postoperative Respiratory Function in Bariatric Laparoscopic Surgery. Anesth Analg 2017; 124:1469-1475. [DOI: 10.1213/ane.0000000000001801] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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19
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Pouwels S, Smeenk FW, Manschot L, Lascaris B, Nienhuijs S, Bouwman RA, Buise MP. Perioperative respiratory care in obese patients undergoing bariatric surgery: Implications for clinical practice. Respir Med 2016; 117:73-80. [DOI: 10.1016/j.rmed.2016.06.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Revised: 04/19/2016] [Accepted: 06/06/2016] [Indexed: 12/16/2022]
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Chand B, Prathanvanich P. Critical Care Management of Bariatric Surgery Complications. J Intensive Care Med 2015; 31:511-28. [PMID: 26115959 DOI: 10.1177/0885066615593067] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Accepted: 06/01/2015] [Indexed: 12/23/2022]
Abstract
Obesity remains a major medical disease that often requires surgical intervention in morbidly obese patients. Surgical procedures have evolved and are performed routinely in most major medical centers. Outcomes are often dependent on patient characteristics, type of procedure, and preoperative planning. Risk stratification often depends on screening and optimizing known comorbidities often encountered in this patient population. A thorough understanding of the physiologic changes seen in obese patient and the commonly performed operations will allow the physician to perform optimal treatment strategies.
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Affiliation(s)
- Bipan Chand
- Department of Surgery, Loyola University, Maywood, IL, USA
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21
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Rivera C, Pecuchet N, Wermert D, Pricopi C, Le Pimpec-Barthes F, Riquet M, Fabre E. [Obesity and lung cancer: incidence and repercussions on epidemiology, pathology and treatments]. REVUE DE PNEUMOLOGIE CLINIQUE 2015; 71:37-43. [PMID: 25681316 DOI: 10.1016/j.pneumo.2014.11.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Revised: 11/17/2014] [Accepted: 11/18/2014] [Indexed: 06/04/2023]
Abstract
INTRODUCTION Obesity and lung cancer are major public health problems. The purpose of this work is to review the data concerning this association. METHOD We report clinical and epidemiological data on obesity and discuss the impact on the incidence of lung cancer, as well as the safety and efficiency of anti-tumor treatments. RESULTS Obesity does not contribute to the occurrence of lung cancer, unlike other malignancies. Patients may be more likely to undergo treatment at lower risk. Regarding surgery, obesity makes anaesthesia more difficult, increases the operative duration but does not increase postoperative morbidity and mortality. Chemotherapy and radiotherapy seem to be administered according to the same criteria as patients with normal weight. Paradoxically, survival rates of lung cancer are better in obese patients as well after surgery than after non-surgical treatment. CONCLUSION Obesity is related to many neoplasms but not to lung cancer. Regarding long-term survival all treatments combined, it has a favorable effect: this is the "obesity paradox".
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Affiliation(s)
- C Rivera
- Service de chirurgie thoracique, université Paris Descartes, hôpital européen Georges-Pompidou, 20, rue Leblanc, 75015 Paris, France
| | - N Pecuchet
- Unité d'oncologie thoracique, université Paris Descartes, hôpital européen Georges-Pompidou, 20, rue Leblanc, 75015 Paris, France
| | - D Wermert
- Service de pneumologie, université Paris Descartes, hôpital européen Georges-Pompidou, 20, rue Leblanc, 75015 Paris, France
| | - C Pricopi
- Service de chirurgie thoracique, université Paris Descartes, hôpital européen Georges-Pompidou, 20, rue Leblanc, 75015 Paris, France
| | - F Le Pimpec-Barthes
- Service de chirurgie thoracique, université Paris Descartes, hôpital européen Georges-Pompidou, 20, rue Leblanc, 75015 Paris, France
| | - M Riquet
- Service de chirurgie thoracique, université Paris Descartes, hôpital européen Georges-Pompidou, 20, rue Leblanc, 75015 Paris, France.
| | - E Fabre
- Unité d'oncologie thoracique, université Paris Descartes, hôpital européen Georges-Pompidou, 20, rue Leblanc, 75015 Paris, France
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22
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Czapla Z, John A, Szwed A, Hanć T, Durda M, Ratajczak J, Barłóg E. Influence of Body Shape Composition on Respiratory Function in Adult Women. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2015; 910:55-62. [DOI: 10.1007/5584_2015_208] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
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Melo LC, Silva MAMD, Calles ACDN. Obesity and lung function: a systematic review. EINSTEIN-SAO PAULO 2014; 12:120-5. [PMID: 24728258 PMCID: PMC4898251 DOI: 10.1590/s1679-45082014rw2691] [Citation(s) in RCA: 127] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2012] [Accepted: 11/30/2013] [Indexed: 12/15/2022] Open
Abstract
Obesity is a chronic disease characterized by the excessive accumulation of body fat that is harmful to the individuals. Respiratory disorders are among the comorbidities associated with obesity. This study had the objective of investigating the alterations in respiratory function that affect obese individuals. A systematic review was performed, by selecting publications in the science databases MEDLINE and LILACS, using PubMed and SciELO. The articles that assessed pulmonary function by plethysmography and/or spirometry in obese individuals aged under 18 years were included. The results demonstrated that the obese individuals presented with a reduction in lung volume and capacity as compared to healthy individuals. Reduction of total lung capacity and reduction of forced vital capacity, accompanied by reduction of the forced expiratory volume after one second were the most representative findings in the samples. The articles analyzed proved the presence of a restrictive respiratory pattern associated with obesity.
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Pulmonary complications after elective liver transplantation-incidence, risk factors, and outcome. Transplantation 2012; 94:532-8. [PMID: 22885879 DOI: 10.1097/tp.0b013e31825c1d41] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
UNLABELLED After liver transplantation (LT), postoperative pulmonary complications (PPC) occur in approximately 35% to 50% of the recipients. Among these PPC, pneumonia is the most frequently encountered. Pulmonary dysfunction has also been widely reported among patients awaiting LT. The links between this dysfunction and PPC have not been clearly established. In this present cohort study, we evaluated the incidence and profile of post-LT pneumonia and identified potential preoperative risk factors. METHODS The postoperative clinical course of 212 liver transplant recipients between January 2008 and April 2010 was analyzed. These patients were treated in a single intensive care unit and received standardized postoperative care. RESULTS During the postoperative period, 47 (22%) patients developed pneumonia, of whom 20 (43%) developed respiratory failure requiring mechanical ventilation. Univariate analysis showed that several preoperative factors (age of recipient, model for end-stage liver disease score, indication for LT, platelet count, and restrictive lung pattern revealed by preoperative pulmonary function tests) and the transfusion (blood units and fresh frozen plasma units) during the operative period were associated with pneumonia. Using multivariate analysis by logistic regression, only a restrictive lung pattern (odds ratio=3.14; 95% confidence interval, 1.51-6.51; P=0.002) and the international normalized ratio measured prior LT (OR=4.95; 95% confidence interval, 1.86-8.59; P=0.0004) were independent predictors of pneumonia after LT. CONCLUSION Pneumonia is common among patients undergoing LT and is a major cause of morbidity. A restrictive pattern on preoperative pulmonary testing and a higher international normalized ratio measured prior LT were associated with more risk of postoperative pneumonia.
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Gabrielsen AM, Lund MB, Kongerud J, Viken KE, Røislien J, Hjelmesæth J. The relationship between anthropometric measures, blood gases, and lung function in morbidly obese white subjects. Obes Surg 2011; 21:485-91. [PMID: 21086061 PMCID: PMC3058403 DOI: 10.1007/s11695-010-0306-9] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
Background Obesity may cause adverse effects on the respiratory system. The main purpose of this study was to investigate how various measures of obesity are related to arterial blood gases and pulmonary function. Methods This is a cross-sectional study of consecutive morbidly obese patients with normal lung function. Blood gas samples were taken from the radial artery after 5 min of rest with subjects sitting upright. Lung function measurements included dynamic spirometry, static lung volumes, and gas diffusing capacity. Results The 149 patients (77% women) had a mean (SD) age of 43 years (11 years) and BMI of 45.0 kg/m2 (6.3 kg/m2). The mean expiratory reserve volume (ERV) was less than half (49%) of predicted value, whilst most other lung function values were within predicted range. Forty-two patients had an abnormally low pO2 value (<10.7 kPa [80 mmHg]), while eight patients had a high pCO2 value (>6.0 kPa [45 mmHg]). All anthropometric measures correlated significantly with decreasing pO2 and increasing pCO2 (all P values < 0.05). BMI, neck circumference (NC), and waist circumference (WC) were negatively correlated with ERV (r = −0.25, −0.19, −0.21, respectively, all P values < 0.05). Multiple linear regression showed that BMI, WC, and NC were significantly associated with pO2 after adjustments for age, gender, and pack-years (all P values < 0.001). The models explained 34–36% of the variations in pO2. BMI, NC, and WC were also significantly associated with pCO2 (all P values < 0.05).There was no significant association between waist-to-hip ratio and blood gases (both P values > 0.27). Conclusions Both central and overall obesity were associated with unfavorable blood gases and low ERV.
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Affiliation(s)
- Anne-Marie Gabrielsen
- The Morbid Obesity Center, Vestfold Hospital Trust, Box 2168, 3103, Tønsberg, Norway
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