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Granados L, John M, Edelman JD. New Therapies in Outpatient Pulmonary Medicine. Med Clin North Am 2024; 108:843-869. [PMID: 39084837 DOI: 10.1016/j.mcna.2024.03.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/02/2024]
Abstract
Newer medications and devices, as well as greater understanding of the benefits and limitations of existing treatments, have led to expanded treatment options for patients with lung disease. Treatment advances have led to improved outcomes for patients with asthma, chronic obstructive pulmonary disease, interstitial lung disease, pulmonary hypertension, and cystic fibrosis. The risks and benefits of available treatments are substantially variable within these heterogeneous disease groups. Defining the role of newer therapies mandates both an understanding of these disorders and overall treatment approaches. This section will review general treatment approaches in addition to focusing on newer therapies for these conditions..
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Affiliation(s)
- Laura Granados
- Department of Pulmonary, Critical Care and Sleep Medicine, University of Washington, Seattle, WA, USA.
| | - Mira John
- Department of Pulmonary, Critical Care and Sleep Medicine, University of Washington, Seattle, WA, USA
| | - Jeffrey D Edelman
- Department of Pulmonary, Critical Care and Sleep Medicine, University of Washington, Seattle, WA, USA; Puget Sound Department of Veterans Affairs, Seattle, WA, USA
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2
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Everaerts S, Vandervelde CM, Shah P, Slebos DJ, Ceulemans LJ. Surgical and bronchoscopic pulmonary function-improving procedures in lung emphysema. Eur Respir Rev 2023; 32:230004. [PMID: 38123230 PMCID: PMC10731473 DOI: 10.1183/16000617.0004-2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Accepted: 09/17/2023] [Indexed: 12/23/2023] Open
Abstract
COPD is a highly prevalent, chronic and irreversible obstructive airway disease without curative treatment. Standard therapeutic strategies, both non-pharmacological and pharmacological, have only limited effects on lung function parameters of patients with severe disease. Despite optimal pharmacological treatment, many patients with severe COPD still have a high burden of dyspnoea and a poor quality of life. If these patients have severe lung emphysema, with hyperinflation as the driver of symptoms and exercise intolerance, lung volume reduction may be an effective treatment with a significant impact on lung function, exercise capacity and quality of life. Currently, different lung volume reduction approaches, both surgical and bronchoscopic, have shown encouraging results and have been implemented in COPD treatment recommendations. Nevertheless, choosing the optimal lung volume reduction strategy for an individual patient remains challenging. Moreover, there is still room for improving durability of effect and safety in all available procedures. Ongoing and innovative research is essential to push this field forwards. This review provides an overview of results and limitations of the current lung volume reduction options for patients with severe lung emphysema and hyperinflation.
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Affiliation(s)
- Stephanie Everaerts
- Department of Pulmonary Diseases, University Hospitals Leuven, Leuven, Belgium
- Laboratory of Respiratory Diseases and Thoracic Surgery (BREATHE), Department of Chronic Diseases and Metabolism, KU Leuven, Leuven, Belgium
| | - Christelle M. Vandervelde
- Laboratory of Respiratory Diseases and Thoracic Surgery (BREATHE), Department of Chronic Diseases and Metabolism, KU Leuven, Leuven, Belgium
- Department of Thoracic Surgery, University Hospitals Leuven, Leuven, Belgium
| | - Pallav Shah
- Department of Pulmonology, Royal Brompton Hospital, London, UK
- National Heart and Lung Institute, Imperial College, London, UK
- Department of Pulmonology, Chelsea and Westminster Hospital, London, UK
| | - Dirk-Jan Slebos
- Department of Pulmonary Diseases, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
- Both authors contributed equally
| | - Laurens J. Ceulemans
- Laboratory of Respiratory Diseases and Thoracic Surgery (BREATHE), Department of Chronic Diseases and Metabolism, KU Leuven, Leuven, Belgium
- Department of Thoracic Surgery, University Hospitals Leuven, Leuven, Belgium
- Both authors contributed equally
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3
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Siafakas N, Trachalaki A. By deflating the lungs pulmonologists help the cardiologists. A literature review. Pulmonology 2023; 29 Suppl 4:S86-S91. [PMID: 37031001 DOI: 10.1016/j.pulmoe.2023.02.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 02/15/2023] [Accepted: 02/16/2023] [Indexed: 04/08/2023] Open
Abstract
In this review, we present the effects of lung hyperinflation on the cardiovascular system (CVS) and the beneficial outcomes of different deflation treatment modalities. We discuss the effects of long-acting bronchodilator drugs, medical and surgical lung volume reduction on the performance of the CVS. Although there is a small number of studies investigating lung deflation and the CVS, the short-term improvement in heart function was clearly demonstrated. However, more studies, with longer duration, are needed to verify these significant beneficial effects of deflation of the lungs on the CVS. Dynamic hyperinflation during exercise could be a research model to investigate further the effects of lung hyperinflation and/or deflation on the CVS.
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Affiliation(s)
- N Siafakas
- University Hospital of Heraklion, University of Crete, Greece.
| | - A Trachalaki
- National Heart and Lung Institute, Imperial College London, UK
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Lung Volume Reduction Surgery Reduces Pulmonary Arterial Hypertension Associated With Severe Lung Emphysema and Hypercapnia. ASAIO J 2023; 69:218-224. [PMID: 35417422 DOI: 10.1097/mat.0000000000001735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Lung volume reduction surgery (LVRS) represents a standard surgical approach for patients with severe pulmonary emphysema. One of the relevant risk factors for LVRS is the presence of pulmonary arterial hypertension (PAH). The aim of this study is to assess the postoperative changes in pulmonary arterial pressure (PAP) after LVRS for patients with severe pulmonary emphysema compared with preoperative measures. N = 61 consecutive patients with severe pulmonary emphysema and preoperative evidence for PAH (pulmonary arterial systolic pressure [PASP] ≥ 35 mmHg) were prospectively included into this study. In all patients, thoracoscopic LVRS was performed. PASP was assessed by echocardiography before surgery, early postoperatively, and 3 months after surgery. Data were prospectively recorded and analyzed retrospectively. Primary end points were the postoperative changes in PASP as well as the 90 day mortality rate. Secondary endpoints included: pulmonary function test, exercise capacity, quality of life, and dyspnea symptoms (Borg scale). Early after surgery, a significant reduction in PASP was observed at the day of discharge and at 3 month follow-up. In n = 34 patients, no tricuspid valve regurgitation was detectable anymore suggesting normal PAP. In n = 3 patients, venovenous extracorporeal lung support (VV ECLS) was already implemented preoperatively. In the remaining cases, VV ECLS was applied intraoperatively and continued postoperatively. Mean duration of postoperative ECLS support was 2 days. Four patients died due to acute right heart failure, two patients from sepsis with multiorgan failure, and one patient from acute pulmonary embolism. Ninety day mortality was 11.5 %. A significant improvement was postoperatively observed regarding the performance status, dyspnea scale, as well as quality of life. This study suggests a beneficial effect of LVRS on PAP, which may ultimately help to protect and stabilize right ventricular function. Further studies, implementing pre- and postoperative right heart catheterizations including invasive PAP evaluation, are necessary to support the findings in this study in greater detail.
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Mimae T, Miyata Y, Kumada T, Handa Y, Tsutani Y, Okada M. OUP accepted manuscript. Interact Cardiovasc Thorac Surg 2022; 34:753-759. [PMID: 35137092 PMCID: PMC9070519 DOI: 10.1093/icvts/ivac014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 01/13/2022] [Indexed: 11/14/2022] Open
Affiliation(s)
- Takahiro Mimae
- Department of Surgical Oncology, Hiroshima University, Hiroshima, Japan
| | - Yoshihiro Miyata
- Department of Surgical Oncology, Hiroshima University, Hiroshima, Japan
| | - Takashi Kumada
- Department of Surgical Oncology, Hiroshima University, Hiroshima, Japan
| | - Yoshinori Handa
- Department of Surgical Oncology, Hiroshima University, Hiroshima, Japan
| | - Yasuhiro Tsutani
- Department of Surgical Oncology, Hiroshima University, Hiroshima, Japan
| | - Morihito Okada
- Department of Surgical Oncology, Hiroshima University, Hiroshima, Japan
- Corresponding author. Department of Surgical Oncology, Hiroshima University, Hiroshima, Japan, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8551, Japan. Tel: +81-82-257-5869; fax: +81-82-256-7109; e-mail: (M. Okada)
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Abstract
Pulmonary atelectasis is common in the perioperative period. Physiologically, it is produced when collapsing forces derived from positive pleural pressure and surface tension overcome expanding forces from alveolar pressure and parenchymal tethering. Atelectasis impairs blood oxygenation and reduces lung compliance. It is increasingly recognized that it can also induce local tissue biologic responses, such as inflammation, local immune dysfunction, and damage of the alveolar-capillary barrier, with potential loss of lung fluid clearance, increased lung protein permeability, and susceptibility to infection, factors that can initiate or exaggerate lung injury. Mechanical ventilation of a heterogeneously aerated lung (e.g., in the presence of atelectatic lung tissue) involves biomechanical processes that may precipitate further lung damage: concentration of mechanical forces, propagation of gas-liquid interfaces, and remote overdistension. Knowledge of such pathophysiologic mechanisms of atelectasis and their consequences in the healthy and diseased lung should guide optimal clinical management.
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Dempsey JA, Neder JA, Phillips DB, O'Donnell DE. The physiology and pathophysiology of exercise hyperpnea. HANDBOOK OF CLINICAL NEUROLOGY 2022; 188:201-232. [PMID: 35965027 DOI: 10.1016/b978-0-323-91534-2.00001-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
In health, the near-eucapnic, highly efficient hyperpnea during mild-to-moderate intensity exercise is driven by three obligatory contributions, namely, feedforward central command from supra-medullary locomotor centers, feedback from limb muscle afferents, and respiratory CO2 exchange (V̇CO2). Inhibiting each of these stimuli during exercise elicits a reduction in hyperpnea even in the continuing presence of the other major stimuli. However, the relative contribution of each stimulus to the hyperpnea remains unknown as does the means by which V̇CO2 is sensed. Mediation of the hyperventilatory response to exercise in health is attributed to the multiple feedback and feedforward stimuli resulting from muscle fatigue. In patients with COPD, diaphragm EMG amplitude and its relation to ventilatory output are used to decipher mechanisms underlying the patients' abnormal ventilatory responses, dynamic lung hyperinflation and dyspnea during exercise. Key contributions to these exercise-limiting responses across the spectrum of COPD severity include high dead space ventilation, an excessive neural drive to breathe and highly fatigable limb muscles, together with mechanical constraints on ventilation. Major controversies concerning control of exercise hyperpnea are discussed along with the need for innovative research to uncover the link of metabolism to breathing in health and disease.
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Affiliation(s)
- Jerome A Dempsey
- John Rankin Laboratory of Pulmonary Medicine, Department of Population Health Sciences, University of Wisconsin-Madison, Madison, WI, United States.
| | - J Alberto Neder
- Respiratory Investigation Unit, Department of Medicine, Queen's University and Kingston Health Sciences Centre Kingston General Hospital Campus, Kingston, ON, Canada
| | - Devin B Phillips
- Respiratory Investigation Unit, Department of Medicine, Queen's University and Kingston Health Sciences Centre Kingston General Hospital Campus, Kingston, ON, Canada
| | - Denis E O'Donnell
- Respiratory Investigation Unit, Department of Medicine, Queen's University and Kingston Health Sciences Centre Kingston General Hospital Campus, Kingston, ON, Canada
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Weder W, Ceulemans LJ, Opitz I, Schneiter D, Caviezel C. Lung Volume Reduction Surgery in Patients with Homogeneous Emphysema. Thorac Surg Clin 2021; 31:203-209. [PMID: 33926673 DOI: 10.1016/j.thorsurg.2021.02.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Randomized controlled trials have demonstrated that lung volume reduction surgery (LVRS) improves exercise capacity, lung function, and quality of life in patients with heterogenous emphysema on computed tomographic and perfusion scan. However, most patients have a nonheterogenous type of destruction. These patients, summarized under "homogeneous emphysema," may also benefit from LVRS as long they are severely hyperinflated, and adequate function is remaining with a diffusing capacity of the lungs for carbon monoxide greater than 20% and no pulmonary hypertension. Surgical mortality is low when patients are well selected.
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Affiliation(s)
- Walter Weder
- Thoracic Surgery, Thoraxchirurgie Bethanien, Toblerstrasse 61, 8044 Zürich, Switzerland.
| | - Laurens J Ceulemans
- Department of Thoracic Surgery, University Hospitals Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - Isabelle Opitz
- Department of Thoracic Surgery, University Hospital Zürich, Rämistrasse 100, 8091 Zürich, Switzerland
| | - Didier Schneiter
- Department of Thoracic Surgery, University Hospital Zürich, Rämistrasse 100, 8091 Zürich, Switzerland
| | - Claudio Caviezel
- Department of Thoracic Surgery, University Hospital Zürich, Rämistrasse 100, 8091 Zürich, Switzerland
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9
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Foray N, Stone T, White P. Alpha 1-antitrypsin Disease, Treatment and Role for Lung Volume Reduction Surgery. Thorac Surg Clin 2021; 31:139-160. [PMID: 33926668 DOI: 10.1016/j.thorsurg.2021.02.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Chronic obstructive pulmonary usually is subcategorized into 2 groups: chronic bronchitis and emphysema. The main cause of chronic bronchitis and emphysema is smoking; however, alpha1-antitrypsin also has been seen to cause emphysema in patients who are deficient. As symptoms and lung function decline, treatment modalities, such as lung volume reduction surgery, have been used in individuals with chronic obstructive pulmonary disease and upper lobe predominant emphysema. This article analyzes multiple published series where lung volume reduction surgery has been used in individuals with alpha1-antitrypsin deficiency and their overall outcomes.
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Affiliation(s)
- Nathalie Foray
- Department of Internal Medicine, Division of Pulmonary and Critical Care Medicine, Southern Illinois University School of Medicine, 801 North Rutledge Street, Room 1269, Springfield, IL 62702, USA.
| | - Taylor Stone
- Department of Internal Medicine, Division of Pulmonary and Critical Care Medicine, Southern Illinois University School of Medicine, 801 North Rutledge Street, Room 1269, Springfield, IL 62702, USA
| | - Peter White
- Department of Internal Medicine, Division of Pulmonary and Critical Care Medicine, Southern Illinois University School of Medicine, 801 North Rutledge Street, Room 1269, Springfield, IL 62702, USA
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10
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Platz JJ, Naunheim KS. Critical Analysis of the National Emphysema Treatment Trial Results for Lung-Volume-Reduction Surgery. Thorac Surg Clin 2021; 31:107-118. [PMID: 33926665 DOI: 10.1016/j.thorsurg.2021.01.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The National Emphysema Treatment Trial compared medical treatment of severe pulmonary emphysema with lung-volume-reduction surgery in a multiinstitutional randomized prospective fashion. Two decades later, this trial remains one of the key sources of information we have on the treatment of advanced emphysematous lung disease. The trial demonstrated the short- and long-term effectiveness of surgical intervention as well as the need for strict patient selection and preoperative workup. Despite these findings, the key failure of the trial was an inability to convince the medical community of the value of surgical resection in the treatment of advanced emphysema.
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Affiliation(s)
- Joseph J Platz
- Division of Cardiothoracic Surgery, Saint Louis University School of Medicine, 1008 South Spring Avenue, Saint Louis, MO 63110, USA.
| | - Keith S Naunheim
- Division of Cardiothoracic Surgery, Saint Louis University School of Medicine, 1008 South Spring Avenue, Saint Louis, MO 63110, USA
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Kilic ID, Ugurlu E, Sevgican CI, Yigit N, Cetin N, Sen G, Kaya D. The Effects of Endobronchial Coil Therapy on Right Ventricular Functions. COPD 2020; 17:699-705. [PMID: 33161756 DOI: 10.1080/15412555.2020.1839875] [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
Lung hyperinflation is an important therapeutic target in symptomatic emphysema patients. Endobronchial therapies that reduce end-expiratory lung volume are increasingly being used in advanced cases. However, there is paucity of data regarding the effects of these therapies on the heart functions. The aim of this study is to evaluate the right ventricular functions before and after the procedure in patients who underwent endobronchial coil therapy (EBCT).Patients who were between 18 and 80 years of age and scheduled for EBCT with GOLD 3-4 were enrolled in the study. Right heart functions were evaluated using MPI, TAS, TAPSE. Right atrium area and maximum velocity of tricuspid regurgitation were also noted.A total of 23 patients were enrolled in the study. 21 patients underwent bilateral intervention, while only 2 patients received unilateral treatment. There was an improvement in MPI (0.49 ± 0.15 vs 0.39 ± 0.11, p < 0.001) and TAS (11.6 (9 - 15) vs 13.2 (9.80 - 17.0), p = 0.001). Peak TRV (2.52 ± 0.6, 2.38 ± 0.6, p = 0.02) and PASP values were lower in the post-operative period (41.15 ± 5.94 vs 36.83 ± 8.01 p = 0.019).In this current study, we found improved echocardiographic RtV parameters in patients who received EBCT treatment.
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Affiliation(s)
- Ismail Dogu Kilic
- Department of Cardiology, Pamukkale University Hospitals, Denizli, Turkey
| | - Erhan Ugurlu
- Department of Pulmonology, Pamukkale University Hospitals, Denizli, Turkey
| | | | - Nilufer Yigit
- Department of Pulmonology, Pamukkale University Hospitals, Denizli, Turkey
| | - Nazli Cetin
- Department of Pulmonology, Pamukkale University Hospitals, Denizli, Turkey
| | - Gursel Sen
- Department of Cardiology, Pamukkale University Hospitals, Denizli, Turkey
| | - Derya Kaya
- Department of Cardiology, Pamukkale University Hospitals, Denizli, Turkey
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van Dijk M, Klooster K, Ten Hacken NHT, Sciurba F, Kerstjens HAM, Slebos DJ. The effects of lung volume reduction treatment on diffusing capacity and gas exchange. Eur Respir Rev 2020; 29:29/158/190171. [PMID: 33115787 DOI: 10.1183/16000617.0171-2019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Accepted: 05/19/2020] [Indexed: 11/05/2022] Open
Abstract
Lung volume reduction (LVR) treatment in patients with severe emphysema has been shown to have a positive effect on hyperinflation, expiratory flow, exercise capacity and quality of life. However, the effects on diffusing capacity of the lungs and gas exchange are less clear. In this review, the possible mechanisms by which LVR treatment can affect diffusing capacity of the lung for carbon monoxide (D LCO) and arterial gas parameters are discussed, the use of D LCO in LVR treatment is evaluated and other diagnostic techniques reflecting diffusing capacity and regional ventilation (V')/perfusion (Q') mismatch are considered.A systematic review of the literature was performed for studies reporting on D LCO and arterial blood gas parameters before and after LVR surgery or endoscopic LVR with endobronchial valves (EBV). D LCO after these LVR treatments improved (40 studies, n=1855) and the mean absolute change from baseline in % predicted D LCO was +5.7% (range -4.6% to +29%), with no real change in blood gas parameters. Improvement in V' inhomogeneity and V'/Q' mismatch are plausible explanations for the improvement in D LCO after LVR treatment.
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Affiliation(s)
- Marlies van Dijk
- University of Groningen, Dept of Pulmonary Diseases, University Medical Center Groningen, Research Institute for Asthma and COPD Groningen, Groningen, The Netherlands
| | - Karin Klooster
- University of Groningen, Dept of Pulmonary Diseases, University Medical Center Groningen, Research Institute for Asthma and COPD Groningen, Groningen, The Netherlands
| | - Nick H T Ten Hacken
- University of Groningen, Dept of Pulmonary Diseases, University Medical Center Groningen, Research Institute for Asthma and COPD Groningen, Groningen, The Netherlands
| | - Frank Sciurba
- Division of Pulmonary and Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Huib A M Kerstjens
- University of Groningen, Dept of Pulmonary Diseases, University Medical Center Groningen, Research Institute for Asthma and COPD Groningen, Groningen, The Netherlands
| | - Dirk-Jan Slebos
- University of Groningen, Dept of Pulmonary Diseases, University Medical Center Groningen, Research Institute for Asthma and COPD Groningen, Groningen, The Netherlands
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Emerging Interventional Pulmonary Therapies for Chronic Obstructive Pulmonary Disease. J Thorac Imaging 2020; 34:248-257. [PMID: 31145187 DOI: 10.1097/rti.0000000000000424] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Chronic obstructive pulmonary disease is a condition characterized by progressive airflow limitation caused by airway and parenchymal inflammation. Current medical therapies, including bronchodilators, corticosteroids, and anti-inflammatory medications, have been shown to variably improve pulmonary function or quality of life without providing a long-term mortality benefit. Mortality benefits to therapy have been demonstrated in only 2 therapeutic interventions to date: long-term use of daily supplemental oxygen and surgical lung volume reduction (LVRS) for upper-lobe-predominant disease in patients with a low baseline exercise capacity. Newer bronchoscopic techniques for lung volume reduction (bLVR) have attracted interest from clinicians and researchers. To achieve successful results, these advanced therapies require an interdisciplinary approach between general and interventional pulmonologists and thoracic radiologists. In this article, we aim to review the latest interventional pulmonary techniques for treatment of chronic obstructive pulmonary disease with an emphasis on bLVR. We will review the bLVR preprocedure imaging evaluation, postprocedure imaging findings, and explore the potential benefits and risks of therapy based on the most recent clinical trial evidence.
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COMBORIDITY OF CHRONIC OBSTRUCTIVE PULMONARY DISEASE AND CARDIOVASCULAR DISEASES: GENERAL FACTORS, PATHOPHYSIOLOGICAL MECHANISMS AND CLINICAL SIGNIFICANCE. КЛИНИЧЕСКАЯ ПРАКТИКА 2020. [DOI: 10.17816/clinpract21218] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Currently, the comorbidity (combination) of chronic obstructive pulmonary disease (COPD) and cardiovascular diseases (CVD) is an relevant problem for health care. This is due to the high prevalence and continued growth of these pathologies. CVD and COPD have common risk factors and mechanisms underlying their development and progression: smoking, inflammation, sedentary lifestyle, aging, oxidative stress, air pollution, and hypoxia.
In this review, we summarize current knowledge relating to the prevalence and frequency of cardiovascular diseases in people with COPD and the mechanisms that underlie their coexistence. The implications for clinical practice, in particular the main problems of diagnosis and treatment of COPD/CVD comorbidity, are also discussed.
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Abstract
PURPOSE OF REVIEW Chronic obstructive pulmonary disease is a heterogeneous syndrome associated with varying degrees of parenchymal emphysema and airway inflammation resulting in decreased expiratory flow, lung hyperinflation, and symptoms leading to decreased exercise tolerance and quality of life. Impairment in lung function and quality of life persists following guideline-based medical therapy, thus surgical and minimally invasive bronchoscopic approaches were developed to address this unmet need. We offer a narrative review of the available technologies. RECENT FINDINGS Although lung volume reduction surgery has been shown to improve survival in appropriately selected patients, it is infrequently performed. Less invasive bronchoscopic procedures have thus been explored including endobronchial valves, coils, lung sealant, thermal vapor, and other airway approaches. Selection criteria including severity of physiologic and radiographic impairment, degree of lung hyperinflation, presence of intact fissures, type of symptoms, and presence of comorbidities are critical in selecting appropriate candidates. SUMMARY Recent advances in minimally invasive approaches to lung volume reduction have offered alternatives to surgical approaches. Two endobronchial valve devices are Food and Drug Administration approved for clinical use, and investigations into alternative bronchoscopic therapies to treat both emphysema and chronic bronchitis have been performed or are currently underway. Notably, each of these treatments requires unique selection criteria and thus a personalized approach to treatment.
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16
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Criner GJ, Sue R, Wright S, Dransfield M, Rivas-Perez H, Wiese T, Sciurba FC, Shah PL, Wahidi MM, de Oliveira HG, Morrissey B, Cardoso PFG, Hays S, Majid A, Pastis N, Kopas L, Vollenweider M, McFadden PM, Machuzak M, Hsia DW, Sung A, Jarad N, Kornaszewska M, Hazelrigg S, Krishna G, Armstrong B, Shargill NS, Slebos DJ. A Multicenter Randomized Controlled Trial of Zephyr Endobronchial Valve Treatment in Heterogeneous Emphysema (LIBERATE). Am J Respir Crit Care Med 2019; 198:1151-1164. [PMID: 29787288 DOI: 10.1164/rccm.201803-0590oc] [Citation(s) in RCA: 232] [Impact Index Per Article: 46.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
RATIONALE This is the first multicenter randomized controlled trial to evaluate the effectiveness and safety of Zephyr Endobronchial Valve (EBV) in patients with little to no collateral ventilation out to 12 months. OBJECTIVES To evaluate the effectiveness and safety of Zephyr EBV in heterogeneous emphysema with little to no collateral ventilation in the treated lobe. METHODS Subjects were enrolled with a 2:1 randomization (EBV/standard of care [SoC]) at 24 sites. Primary outcome at 12 months was the ΔEBV-SoC of subjects with a post-bronchodilator FEV1 improvement from baseline of greater than or equal to 15%. Secondary endpoints included absolute changes in post-bronchodilator FEV1, 6-minute-walk distance, and St. George's Respiratory Questionnaire scores. MEASUREMENTS AND MAIN RESULTS A total of 190 subjects (128 EBV and 62 SoC) were randomized. At 12 months, 47.7% EBV and 16.8% SoC subjects had a ΔFEV1 greater than or equal to 15% (P < 0.001). ΔEBV-SoC at 12 months was statistically and clinically significant: for FEV1, 0.106 L (P < 0.001); 6-minute-walk distance, +39.31 m (P = 0.002); and St. George's Respiratory Questionnaire, -7.05 points (P = 0.004). Significant ΔEBV-SoC were also observed in hyperinflation (residual volume, -522 ml; P < 0.001), modified Medical Research Council Dyspnea Scale (-0.8 points; P < 0.001), and the BODE (body mass index, airflow obstruction, dyspnea, and exercise capacity) index (-1.2 points). Pneumothorax was the most common serious adverse event in the treatment period (procedure to 45 d), in 34/128 (26.6%) of EBV subjects. Four deaths occurred in the EBV group during this phase, and one each in the EBV and SoC groups between 46 days and 12 months. CONCLUSIONS Zephyr EBV provides clinically meaningful benefits in lung function, exercise tolerance, dyspnea, and quality of life out to at least 12 months, with an acceptable safety profile in patients with little or no collateral ventilation in the target lobe. Clinical trial registered with www.clinicaltrials.gov (NCT 01796392).
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Affiliation(s)
- Gerard J Criner
- 1 Department of Thoracic Medicine and Surgery, Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania
| | - Richard Sue
- 2 St. Joseph's Hospital and Medical Center, Phoenix, Arizona
| | - Shawn Wright
- 2 St. Joseph's Hospital and Medical Center, Phoenix, Arizona
| | - Mark Dransfield
- 3 University of Alabama at Birmingham UAB Lung Health Center, Birmingham, Alabama
| | - Hiram Rivas-Perez
- 4 Department of Medicine, University of Louisville, Louisville, Kentucky
| | - Tanya Wiese
- 4 Department of Medicine, University of Louisville, Louisville, Kentucky
| | - Frank C Sciurba
- 5 Division of Pulmonary, Allergy and Critical Care Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Pallav L Shah
- 6 Royal Brompton Hospital and Imperial College, London, United Kingdom
| | - Momen M Wahidi
- 7 Duke University Medical Center, Duke University, Durham, North Carolina
| | | | - Brian Morrissey
- 9 Division of Pulmonary, Critical Care and Sleep Medicine, University of California, Davis, Sacramento, California
| | - Paulo F G Cardoso
- 10 Instituto do Coracao, Hospital das Clinicas, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Steven Hays
- 11 University of California, San Francisco, San Francisco, California
| | - Adnan Majid
- 12 Interventional Pulmonology, Beth Israel Deaconess Medical Center, Boston, Massachusetts
| | - Nicholas Pastis
- 13 Medical University of South Carolina, Charleston, South Carolina
| | - Lisa Kopas
- 14 Pulmonary Critical Care and Sleep Medicine Consultants, Houston Methodist, Houston, Texas
| | - Mark Vollenweider
- 15 Orlando Health Pulmonary and Sleep Medicine Group, Orlando Regional Medical Center, Orlando, Florida
| | - P Michael McFadden
- 16 Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Michael Machuzak
- 17 Center for Major Airway Diseases, Cleveland Clinic, Cleveland Clinic Foundation, Respiratory Institute, Cleveland, Ohio
| | - David W Hsia
- 18 Los Angeles Biomedical Research Institute at Harbor-University of California Los Angeles, Torrance, California
| | - Arthur Sung
- 19 Stanford Hospital and Clinics, Stanford, California
| | - Nabil Jarad
- 20 University Hospital Bristol NHS Foundation Trust, Bristol, United Kingdom
| | - Malgorzata Kornaszewska
- 21 Department of Cardiothoracic Surgery, University Hospital of Wales, Cardiff, United Kingdom
| | - Stephen Hazelrigg
- 22 Division of Cardiothoracic Surgery, Department of Surgery, Southern Illinois University School of Medicine, Springfield, Illinois
| | - Ganesh Krishna
- 23 Palo Alto Medical Foundation, El Camino Hospital, Mountain View, California
| | | | | | - Dirk-Jan Slebos
- 26 Department of Pulmonary Diseases, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
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17
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Xu Y, Yamashiro T, Moriya H, Tsubakimoto M, Nagatani Y, Matsuoka S, Murayama S. Strain measurement on four-dimensional dynamic-ventilation CT: quantitative analysis of abnormal respiratory deformation of the lung in COPD. Int J Chron Obstruct Pulmon Dis 2018; 14:65-72. [PMID: 30587962 PMCID: PMC6305131 DOI: 10.2147/copd.s183740] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Purpose Strain measurement is frequently used to assess myocardial motion in cardiac imaging. This study aimed to apply strain measurement to pulmonary motion observed by four-dimensional dynamic-ventilation computed tomography (CT) and to clarify motion abnormality in COPD. Materials and methods Thirty-two smokers, including ten with COPD, underwent dynamic-ventilation CT during spontaneous breathing. CT data were continuously reconstructed every 0.5 seconds. In the series of images obtained by dynamic-ventilation CT, five expiratory frames were identified starting from the peak inspiratory frame (first expiratory frame) and ending with the fifth expiratory frame. Strain measurement of the scanned lung was performed using research software that was originally developed for cardiac strain measurement and modified for assessing deformation of the lung. The measured strain values were divided by the change in mean lung density to adjust for the degree of expiration. Spearman’s rank correlation analysis was used to evaluate associations between the adjusted strain measurements and various spirometric values. Results The adjusted strain measurement was negatively correlated with FEV1/FVC (ρ=−0.52, P<0.01), maximum mid-expiratory flow (ρ=−0.59, P<0.001), and peak expiratory flow (ρ=−0.48, P<0.01), suggesting that abnormal deformation of lung motion is related to various patterns of expiratory airflow limitation. Conclusion Abnormal deformation of lung motion exists in COPD patients and can be quantitatively assessed by strain measurement using dynamic-ventilation CT. This technique can be expanded to dynamic-ventilation CT in patients with various lung and airway diseases that cause abnormal pulmonary motion.
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Affiliation(s)
- Yanyan Xu
- Department of Radiology, Graduate School of Medical Science, University of the Ryukyus, Nishihara, Okinawa, Japan, .,Department of Radiology, China-Japan Friendship Hospital, Beijing, Republic of China
| | - Tsuneo Yamashiro
- Department of Radiology, Graduate School of Medical Science, University of the Ryukyus, Nishihara, Okinawa, Japan,
| | - Hiroshi Moriya
- Department of Radiology, Ohara General Hospital, Fukushima-City, Fukushima, Japan
| | - Maho Tsubakimoto
- Department of Radiology, Graduate School of Medical Science, University of the Ryukyus, Nishihara, Okinawa, Japan,
| | - Yukihiro Nagatani
- Department of Radiology, Shiga University of Medical Science, Otsu, Shiga, Japan
| | - Shin Matsuoka
- Department of Radiology, St Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
| | - Sadayuki Murayama
- Department of Radiology, Graduate School of Medical Science, University of the Ryukyus, Nishihara, Okinawa, Japan,
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18
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Mansfield C, Sutphin J, Shriner K, Criner GJ, Celli BR. Patient Preferences for Endobronchial Valve Treatment of Severe Emphysema. CHRONIC OBSTRUCTIVE PULMONARY DISEASES-JOURNAL OF THE COPD FOUNDATION 2018; 6:51-63. [PMID: 30775424 DOI: 10.15326/jcopdf.6.1.2018.0147] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Background: Patients with severe emphysema have limited treatment options. Little is known about patients' willingness to accept risks for new treatments that offer meaningful benefits. Methods: We determined treatment preferences of patients with severe emphysema using a web-based discrete-choice experiment survey. Respondents answered 9 questions that offered choices between 2 hypothetical interventional treatments or continuing current medical management. Variations in 5 attributes defined the 2 interventional treatments: improvement in ability to breathe and carry out day-to-day activities, frequency of hospitalized exacerbations, treatment type, risk of pneumothorax within 30 days of procedure, and risk of death within 3 months. Respondents were recruited through the COPD Foundation's COPD Patient-Powered Research Network and had a self-reported emphysema diagnosis and 2+ score on the modified Medical Research Council Dyspnea Scale. The relative importance of the attributes and the percentage of respondents who would select different treatment options was modeled using random-parameters logit. Results: Among 294 respondents, 51% always chose an interventional treatment option, while 19% always selected continued medical management. The most important change on average was moving from continued medical management (with no improvement in breathlessness) to an interventional treatment with improvement in breathlessness. The model predicted 71% of respondents would select a treatment option similar to removable endobronchial valve implants, 6% would select lung volume reduction surgery (LVRS), and 23% continued medical management. Conclusion: Patients with severe emphysema perceive that a procedure with risks and benefits similar to the Zephyr® endobronchial valve implants is desirable over continued medical management or LVRS.
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Affiliation(s)
- Carol Mansfield
- RTI Health Solutions, Research Triangle Park, North Carolina
| | - Jessie Sutphin
- RTI Health Solutions, Research Triangle Park, North Carolina
| | | | - Gerard J Criner
- Department of Thoracic Medicine and Surgery, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania
| | - Bartolome R Celli
- Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts
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19
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Criner RN, Yu D, Jacobs MR, Criner GJ. Effect of Lung Volume Reduction Surgery on Respiratory Muscle Strength in Advanced Emphysema. CHRONIC OBSTRUCTIVE PULMONARY DISEASES-JOURNAL OF THE COPD FOUNDATION 2018; 6:40-50. [PMID: 30775423 DOI: 10.15326/jcopdf.6.1.2018.0188] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Background: Long-term effects of lung volume reduction surgery (LVRS) on respiratory muscle strength and effects of age, sex, and emphysema pattern on these changes are unknown. Therefore, we aimed to determine the long-term effect of LVRS on respiratory muscle strength changes in severe emphysema. Methods: The National Emphysema Treatment Trial was a prospective controlled multicentered trial, comparing LVRS to optimal medical treatment on survival and maximal exercise capacity. We examined percentage change in maximum inspiratory pressure (MIP) from baseline to 36 months follow-up to determine impact of LVRS as well as age, sex, emphysema pattern and exercise capacity on changes in MIP compared to medical treatment. Results: LVRS individuals had significantly greater increases in MIP from baseline compared to medical individuals at all follow-ups (LVRS 19.8 ± 42.3%, medical 3.2 ± 29.3%, p<0.0001, 12 months). The LVRS group had significant decreases in total lung capacity (TLC), residual volume (RV), functional residual capacity (FRC) and RV/TLC compared to the medical arm at all follow-up periods. Males and individuals 65-70 years of age had significantly greater increases in MIP following LVRS compared to the medical arm at all follow-ups; this same relationship was seen at up to 24 months for low exercise capacity, upper lobe predominant emphysema. Conclusions: LVRS significantly increases inspiratory muscle strength up to 3 years post-operatively, with male sex, age 65-70 years and low exercise capacity, upper lobe predominant emphysema especially associated with increased MIP. Inspiratory muscle strength increases were associated with decreases in non-invasive markers of dynamic hyperinflation, suggesting that LVRS allows inspiratory muscles to return to their optimal length-tension relationship.
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Affiliation(s)
- Rachel N Criner
- Department of Internal Medicine, University of Michigan, Ann Arbor
| | - Daohai Yu
- Department of Clinical Sciences, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania
| | - Michael R Jacobs
- Department of Thoracic Medicine and Surgery, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania
| | - Gerard J Criner
- Department of Thoracic Medicine and Surgery, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania
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20
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Stenqvist O, Persson P, Lundin S. Can we estimate transpulmonary pressure without an esophageal balloon?-yes. ANNALS OF TRANSLATIONAL MEDICINE 2018; 6:392. [PMID: 30460266 DOI: 10.21037/atm.2018.06.05] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
A protective ventilation strategy is based on separation of lung and chest wall mechanics and determination of transpulmonary pressure. So far, this has required esophageal pressure measurement, which is cumbersome, rarely used clinically and associated with lack of consensus on the interpretation of measurements. We have developed an alternative method based on a positive end expiratory pressure (PEEP) step procedure where the PEEP-induced change in end-expiratory lung volume is determined by the ventilator pneumotachograph. In pigs, lung healthy patients and acute lung injury (ALI) patients, it has been verified that the determinants of the change in end-expiratory lung volume following a PEEP change are the size of the PEEP step and the elastic properties of the lung, ∆PEEP × Clung. As a consequence, lung compliance can be calculated as the change in end-expiratory lung volume divided by the change in PEEP and esophageal pressure measurements are not needed. When lung compliance is determined in this way, transpulmonary driving pressure can be calculated on a breath-by-breath basis. As the end-expiratory transpulmonary pressure increases as much as PEEP is increased, it is also possible to determine the end-inspiratory transpulmonary pressure at any PEEP level. Thus, the most crucial factors of ventilator induced lung injury can be determined by a simple PEEP step procedure. The measurement procedure can be repeated with short intervals, which makes it possible to follow the course of the lung disease closely. By the PEEP step procedure we may also obtain information (decision support) on the mechanical consequences of changes in PEEP and tidal volume performed to improve oxygenation and/or carbon dioxide removal.
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Affiliation(s)
- Ola Stenqvist
- Department of Anesthesiology and Intensive Care Medicine, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Per Persson
- Department of Anesthesiology and Intensive Care Medicine, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Stefan Lundin
- Department of Anesthesiology and Intensive Care Medicine, Sahlgrenska University Hospital, Gothenburg, Sweden
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21
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Opitz I, Ulrich S. Pulmonary hypertension in chronic obstructive pulmonary disease and emphysema patients: prevalence, therapeutic options and pulmonary circulatory effects of lung volume reduction surgery. J Thorac Dis 2018; 10:S2763-S2774. [PMID: 30210830 PMCID: PMC6129805 DOI: 10.21037/jtd.2018.07.63] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Accepted: 07/12/2018] [Indexed: 11/06/2022]
Abstract
The exact prevalence of pulmonary hypertension (PH) and cor pulmonale (CP) in chronic obstructive pulmonary disease (COPD) is unknown, and varies considerably from 20-91%. Usually, mean pulmonary artery pressure (mPAP) does not exceed 30 mmHg, and PH is not severe. However, PH and CP are important predictors of mortality in COPD and contribute to disability in this disease. Many factors contribute to the development of PH in chronic lung disease, including reduction of the pulmonary vascular cross-sectional area due to parenchymal loss and accompanying hypoxia, effects of abnormal pulmonary mechanics due to hyperinflation, but also vascular remodeling processes. So far, PH associated with chronic lung disease cannot be treated medically. Therefore, it is indicated to treat the underlying pulmonary disease. Patients with severe PH should be referred to centers experienced in the management of PH and enrollment in clinical trials should be considered. Lung volume reduction surgery (LVRS) theoretically further increases pulmonary vascular resistance (PVR) by reducing the vascular bed when resecting lung tissue, however, this might be compensated by better pulmonary mechanics through reduction of hyperinflation, which will be discussed in the present article.
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Affiliation(s)
- Isabelle Opitz
- Department of Thoracic Surgery, University Hospital Zurich, Zurich, Switzerland
| | - Silvia Ulrich
- Department of Respiratory Diseases, University Hospital Zurich, Zurich, Switzerland
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22
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Caviezel C, Schneiter D, Opitz I, Weder W. Lung volume reduction surgery beyond the NETT selection criteria. J Thorac Dis 2018; 10:S2748-S2753. [PMID: 30210828 DOI: 10.21037/jtd.2018.08.93] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Lung volume reduction surgery (LVRS) for symptomatic patients with advanced emphysema was proven to be successful in a large randomized multi-center trial (NETT) and in several smaller randomized single center trials. This evidence primarily concerns patients with heterogeneous, upper-lobe predominant emphysema and low exercise tolerance within certain selection criteria regarding lung function values. As the most important effect of LVRS is generated by reducing the hyperinflation, even patients with homogeneous emphysema morphology profit from the procedure. Simultaneously, by removing distended and functionless areas in heterogeneous emphysema, also patients with seriously impaired diffusion capacity, moderate pulmonary arterial hypertension, a history of previous LVRS and alpha-1-antitrypsin-deficiency (AATD) can be considered as candidates for (re-)-LVRS. This article summarizes indications for LVRS in these various subtypes of emphysema patients.
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Affiliation(s)
- Claudio Caviezel
- Department of Thoracic Surgery, University Hospital Zurich, Switzerland
| | - Didier Schneiter
- Department of Thoracic Surgery, University Hospital Zurich, Switzerland
| | - Isabelle Opitz
- Department of Thoracic Surgery, University Hospital Zurich, Switzerland
| | - Walter Weder
- Department of Thoracic Surgery, University Hospital Zurich, Switzerland
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23
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Valipour A. Valve therapy in patients with emphysematous type of chronic obstructive pulmonary disease (COPD): from randomized trials to patient selection in clinical practice. J Thorac Dis 2018; 10:S2780-S2796. [PMID: 30210832 PMCID: PMC6129808 DOI: 10.21037/jtd.2018.08.86] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2018] [Accepted: 08/16/2018] [Indexed: 01/16/2023]
Abstract
In recent years a number of endoscopic methods have emerged to treat patients with severe emphysematous type of chronic obstructive pulmonary disease (COPD), who are primarily symptomatic due to hyperinflation despite optimal medical management. Of these techniques, implantation of endobronchial one-way valves into targeted airways of isolated emphysematous lobes appears to be one of the most promising innovations. Results from randomized controlled trials of valve therapy for emphysema show consistent benefits in terms of lung function, exercise capacity, symptoms, and quality of life. This review aims to provide a comprehensive summary of the currently available scientific data, discussion of typical treatment related side effects, and recommendations for patient selection in clinical practice.
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Affiliation(s)
- Arschang Valipour
- Department of Respiratory and Critical Care Medicine, Ludwig-Boltzmann-Institute for COPD and Respiratory Epidemiology, Otto-Wagner-Spital, Sanatoriumsstrasse 2, 1140 Wien, Austria
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24
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Elayaperumal AK, Jackson RE. Anaesthesia for lung volume reduction surgery and endobronchial valves. BJA Educ 2018; 18:193-198. [PMID: 33456832 DOI: 10.1016/j.bjae.2018.04.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/17/2018] [Indexed: 11/17/2022] Open
Affiliation(s)
| | - R E Jackson
- Leeds Teaching Hospitals NHS Trust, Leeds, UK
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25
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The Link between Reduced Inspiratory Capacity and Exercise Intolerance in Chronic Obstructive Pulmonary Disease. Ann Am Thorac Soc 2018; 14:S30-S39. [PMID: 28398073 DOI: 10.1513/annalsats.201610-834fr] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Low inspiratory capacity (IC), chronic dyspnea, and reduced exercise capacity are inextricably linked and are independent predictors of increased mortality in chronic obstructive pulmonary disease. It is no surprise, therefore, that a major goal of management is to improve IC by reducing lung hyperinflation to improve respiratory symptoms and health-related quality of life. The negative effects of lung hyperinflation on respiratory muscle and cardiocirculatory function during exercise are now well established. Moreover, there is growing appreciation that a key mechanism of exertional dyspnea in chronic obstructive pulmonary disease is critical mechanical constraints on tidal volume expansion during exercise when resting IC is reduced. Further evidence for the importance of lung hyperinflation comes from multiple studies, which have reported the clinical benefits of therapeutic interventions that reduce lung hyperinflation and increase IC. A reduced IC in obstructive pulmonary disease is further eroded by exercise and contributes to ventilatory limitation and dyspnea. It is an important outcome for both clinical and research studies.
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26
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Sohn B, Park S, Park IK, Kim YT, Park JD, Park SH, Kang CH. Lung Volume Reduction Surgery for Respiratory Failure in Infants With Bronchopulmonary Dysplasia. Pediatrics 2018; 141:S395-S398. [PMID: 29610158 DOI: 10.1542/peds.2016-3901] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/08/2017] [Indexed: 11/24/2022] Open
Abstract
Lung volume reduction surgery (LVRS) can be performed in patients with severe emphysematous disease. However, LVRS in pediatric patients has not yet been reported. Here, we report our experience with 2 cases of pediatric LVRS. The first patient was a preterm infant girl with severe bronchopulmonary dysplasia, pulmonary hypertension, and hypothyroidism. The emphysematous portion of the right lung was removed via sternotomy and right hemiclamshell incision. The patient was discharged on full-time home ventilator support for 3 months after the surgery. Since then, her respiratory function has improved continuously. She no longer needs oxygen supplementation or ventilator care. Her T-cannula was removed recently. The second patient was also a preterm infant girl with bronchopulmonary dysplasia. She was born with pulmonary hypertension and multiple congenital anomalies, including an atrial septal defect. Despite receiving the best supportive care, she could not be taken off the mechanical ventilator because of severe hypercapnia. We performed LVRS on the right lung via thoracotomy. She was successfully weaned off the mechanical ventilator 1 month after the surgery. She was discharged without severe complications at 3 months after the operation. At present, she is growing well with the help of intermittent home ventilator support. She can now tolerate an oral diet. Our experience shows that LVRS can be considered as a treatment option for pediatric patients with severe emphysematous lung. It is especially helpful for discontinuing prolonged mechanical ventilator care for patients with respiratory failure.
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Affiliation(s)
- Bongyeon Sohn
- Department of Thoracic and Cardiovascular Surgery, Seoul National University Hospital, Seoul, South Korea
| | - Samina Park
- Department of Thoracic and Cardiovascular Surgery, Seoul National University Hospital, Seoul, South Korea
| | - In Kyu Park
- Department of Thoracic and Cardiovascular Surgery, Seoul National University Hospital, Seoul, South Korea
| | - Young Tae Kim
- Department of Thoracic and Cardiovascular Surgery, Seoul National University Hospital, Seoul, South Korea
| | - June Dong Park
- Department of Pediatrics, Seoul National University Children's Hospital, Seoul, South Korea; and
| | - Sung-Hye Park
- Department of Pathology, College of Medicine, Seoul National University, Seoul, South Korea
| | - Chang Hyun Kang
- Department of Thoracic and Cardiovascular Surgery, Seoul National University Hospital, Seoul, South Korea;
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27
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Morgan AD, Zakeri R, Quint JK. Defining the relationship between COPD and CVD: what are the implications for clinical practice? Ther Adv Respir Dis 2018; 12:1753465817750524. [PMID: 29355081 PMCID: PMC5937157 DOI: 10.1177/1753465817750524] [Citation(s) in RCA: 160] [Impact Index Per Article: 26.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Accepted: 12/04/2017] [Indexed: 01/09/2023] Open
Abstract
Cardiovascular diseases (CVDs) are arguably the most important comorbidities in chronic obstructive pulmonary disease (COPD). CVDs are common in people with COPD, and their presence is associated with increased risk for hospitalization, longer length of stay and all-cause and CVD-related mortality. The economic burden associated with CVD in this population is considerable and the cumulative cost of treating comorbidities may even exceed that of treating COPD itself. Our understanding of the biological mechanisms that link COPD and various forms of CVD has improved significantly over the past decade. But despite broad acceptance of the prognostic significance of CVDs in COPD, there remains widespread under-recognition and undertreatment of comorbid CVD in this population. The reasons for this are unclear; however institutional barriers and a lack of evidence-based guidelines for the management of CVD in people with COPD may be contributory factors. In this review, we summarize current knowledge relating to the prevalence and incidence of CVD in people with COPD and the mechanisms that underlie their coexistence. We discuss the implications for clinical practice and highlight opportunities for improved prevention and treatment of CVD in people with COPD. While we advocate more active assessment for signs of cardiovascular conditions across all age groups and all stages of COPD severity, we suggest targeting those aged under 65 years. Evidence indicates that the increased risks for CVD are particularly pronounced in COPD patients in mid-to-late-middle-age and thus it is in this age group that the benefits of early intervention may prove to be the most effective.
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Affiliation(s)
- Ann D Morgan
- National Heart and Lung Institute, Imperial
College London, Emmanuel Kaye Building, Manresa Road, London SW3 6LR,
UK
| | - Rosita Zakeri
- Respiratory Epidemiology, Occupational Medicine
and Public Health, National Heart and Lung Institute, Imperial College
London, London, UK
- Royal Brompton and Harefield NHS Foundation
Trust, London, UK
| | - Jennifer K Quint
- Respiratory Epidemiology, Occupational Medicine
and Public Health, National Heart and Lung Institute, Imperial College
London, London, UK
- Faculty of Epidemiology and Population Health,
London School of Hygiene and Tropical Medicine, London, UK
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28
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Palamidas AF, Kemp SV, Shen M, McNulty W, Zoumot Z, Hopkinson NS, Yang GZ, Shah PL. Putative Mechanisms of Action of Endobronchial Coils. Am J Respir Crit Care Med 2017; 196:109-115. [PMID: 28665200 DOI: 10.1164/rccm.201606-1123le] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Anastasios F Palamidas
- 1 Royal Brompton & Harefield NHS Foundation Trust London, United Kingdom.,2 Imperial College London London, United Kingdom.,3 Chelsea and Westminster Hospital NHS Foundation Trust London, United Kingdom and
| | - Samuel V Kemp
- 1 Royal Brompton & Harefield NHS Foundation Trust London, United Kingdom.,2 Imperial College London London, United Kingdom
| | - Mali Shen
- 2 Imperial College London London, United Kingdom
| | - Will McNulty
- 1 Royal Brompton & Harefield NHS Foundation Trust London, United Kingdom.,2 Imperial College London London, United Kingdom.,3 Chelsea and Westminster Hospital NHS Foundation Trust London, United Kingdom and
| | - Zaid Zoumot
- 4 Cleveland Clinic Abu Dhabi Abu Dhabi, United Arab Emirates
| | - Nicholas S Hopkinson
- 1 Royal Brompton & Harefield NHS Foundation Trust London, United Kingdom.,2 Imperial College London London, United Kingdom
| | | | - Pallav L Shah
- 1 Royal Brompton & Harefield NHS Foundation Trust London, United Kingdom.,2 Imperial College London London, United Kingdom.,3 Chelsea and Westminster Hospital NHS Foundation Trust London, United Kingdom and
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29
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Xu Y, Yamashiro T, Moriya H, Tsubakimoto M, Tsuchiya N, Nagatani Y, Matsuoka S, Murayama S. Hyperinflated lungs compress the heart during expiration in COPD patients: a new finding on dynamic-ventilation computed tomography. Int J Chron Obstruct Pulmon Dis 2017; 12:3123-3131. [PMID: 29123390 PMCID: PMC5661839 DOI: 10.2147/copd.s145599] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Purpose The aims of this study were to evaluate dynamic changes in heart size during the respiratory cycle using four-dimensional computed tomography (CT) and to understand the relationship of these changes to airflow limitation in smokers. Materials and methods A total of 31 smokers, including 13 with COPD, underwent four-dimensional dynamic-ventilation CT during regular breathing. CT data were continuously reconstructed every 0.5 s, including maximum cross-sectional area (CSA) of the heart and mean lung density (MLD). Concordance between the cardiac CSA and MLD time curves was expressed by cross-correlation coefficients. The CT-based cardiothoracic ratio at inspiration and expiration was also calculated. Comparisons of the CT indices between COPD patients and non-COPD smokers were made using the Mann–Whitney test. Spearman rank correlation analysis was used to evaluate associations between CT indices and the forced expiratory volume in 1 s (FEV1.0) relative to the forced vital capacity (FVC). Results Cardiac CSA at both inspiration and expiration was significantly smaller in COPD patients than in non-COPD smokers (P<0.05). The cross-correlation coefficient between cardiac CSA and MLD during expiration significantly correlated with FEV1.0/FVC (ρ=0.63, P<0.001), suggesting that heart size decreases during expiration in COPD patients. The change in the cardiothoracic ratio between inspiration and expiration frames was significantly smaller in COPD patients than in non-COPD smokers (P<0.01). Conclusion Patients with COPD have smaller heart size on dynamic-ventilation CT than non-COPD smokers and have abnormal cardiac compression during expiration.
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Affiliation(s)
- Yanyan Xu
- Department of Radiology, Graduate School of Medical Science, University of the Ryukyus, Nishihara, Japan.,Department of Radiology, China-Japan Friendship Hospital, Beijing, People's Republic of China
| | - Tsuneo Yamashiro
- Department of Radiology, Graduate School of Medical Science, University of the Ryukyus, Nishihara, Japan
| | - Hiroshi Moriya
- Department of Radiology, Ohara General Hospital, Fukushima, Japan
| | - Maho Tsubakimoto
- Department of Radiology, Graduate School of Medical Science, University of the Ryukyus, Nishihara, Japan
| | - Nanae Tsuchiya
- Department of Radiology, Graduate School of Medical Science, University of the Ryukyus, Nishihara, Japan
| | - Yukihiro Nagatani
- Department of Radiology, Shiga University of Medical Science, Otsu, Japan
| | - Shin Matsuoka
- Department of Radiology, St Marianna University School of Medicine, Kawasaki, Japan
| | - Sadayuki Murayama
- Department of Radiology, Graduate School of Medical Science, University of the Ryukyus, Nishihara, Japan
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30
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Makris D, Leroy S, Pradelli J, Benzaquen J, Guenard H, Perotin JM, Zakynthinos S, Zakynthinos E, Deslee G, Marquette CH. Changes in dynamic lung mechanics after lung volume reduction coil treatment of severe emphysema. Thorax 2017; 73:584-586. [PMID: 28893857 DOI: 10.1136/thoraxjnl-2017-210118] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Revised: 07/03/2017] [Accepted: 07/31/2017] [Indexed: 11/03/2022]
Abstract
We assessed the relationships between changes in lung compliance, lung volumes and dynamic hyperinflation in patients with emphysema who underwent bronchoscopic treatment with nitinol coils (coil treatment) (n=11) or received usual care (UC) (n=11). Compared with UC, coil treatment resulted in decreased dynamic lung compliance (CLdyn) (p=0.03) and increased endurance time (p=0.010). The change in CLdyn was associated with significant improvement in FEV1 and FVC, with reduction in residual volume and intrinsic positive end-expiratory pressure, and with increased inspiratory capacity at rest/and at exercise. The increase in end-expiratory lung volume (EELV) during exercise (EELVdyn-ch=EELVisotime EELVrest) demonstrated significant attenuation after coil treatment (p=0.02).
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Affiliation(s)
- Demosthenes Makris
- ICU, University Hospital Larissa, University of Thessaly, Biopolis Larissa, Greece
- Université Côte d'Azur, CHU de Nice, FHU Oncoage, Service de Pneumologie, Nice, France
| | - Sylvie Leroy
- Université Côte d'Azur, CHU de Nice, FHU Oncoage, Service de Pneumologie, Nice, France
| | - Johana Pradelli
- Université Côte d'Azur, CHU de Nice, FHU Oncoage, Service de Pneumologie, Nice, France
| | - Jonathan Benzaquen
- Université Côte d'Azur, CHU de Nice, FHU Oncoage, Service de Pneumologie, Nice, France
| | - Hervé Guenard
- Service d'Exploration Fonctionnelle, CHU Victor Segalen, Bordeaux II, Bordeaux, France
| | - Jeanne-Marie Perotin
- Service de Pneumologie, INSERM U903, Hôpital Universitaire de Reims, Reims, France
| | - Spyros Zakynthinos
- ICU, Evaggelismos University Hospital, Athens University, Athens, Greece
| | | | - Gaëtan Deslee
- Service de Pneumologie, INSERM U903, Hôpital Universitaire de Reims, Reims, France
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Valipour A, Slebos DJ, Herth F, Darwiche K, Wagner M, Ficker JH, Petermann C, Hubner RH, Stanzel F, Eberhardt R. Endobronchial Valve Therapy in Patients with Homogeneous Emphysema. Results from the IMPACT Study. Am J Respir Crit Care Med 2017; 194:1073-1082. [PMID: 27580428 DOI: 10.1164/rccm.201607-1383oc] [Citation(s) in RCA: 205] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
RATIONALE Endobronchial valves (EBVs) have been successfully used in patients with severe heterogeneous emphysema to improve lung physiology. Limited available data suggest that EBVs are also effective in homogeneous emphysema. OBJECTIVES To evaluate the efficacy and safety of EBVs in patients with homogeneous emphysema with absence of collateral ventilation assessed with the Chartis system. METHODS Prospective, multicenter, 1:1 randomized controlled trial of EBV plus standard of care (SoC) or SoC alone. Primary outcome was the percentage change in FEV1 (liters) at 3 months relative to baseline in the EBV group versus the SoC group. Secondary outcomes included changes in FEV1, St. George's Respiratory Questionnaire (SGRQ), 6-minute-walk distance (6MWD), and target lobe volume reduction. MEASUREMENTS AND MAIN RESULTS Ninety-three subjects (age, 63.7 ± 6.1 yr [mean ± SD]; FEV1, % predicted, 29.3 ± 6.5; residual volume, % predicted, 275.4 ± 59.4) were allocated to either the EBV group (n = 43) or the SoC group (n = 50). In the intention-to-treat population, at 3 months postprocedure, improvement in FEV1 from baseline was 13.7 ± 28.2% in the EBV group and -3.2 ± 13.0% in the SoC group (mean between-group difference, 17.0%; P = 0.0002). Other variables demonstrated statistically and clinically significant changes from baseline to 3 months (EBV vs. SoC, respectively: SGRQ, -8.63 ± 11.25 vs. 1.01 ± 9.36; and 6MWD, 22.63 ± 66.63 m vs. -17.34 ± 52.8 m). Target lobe volume reduction at 3 months was -1,195 ± 683 ml (P < 0.0001). Of the EBV subjects, 97.2% achieved volume reduction in the target lobe (P < 0.0001). Procedure-related pneumothoraces occurred in 11 subjects (25.6%). Five subjects required removal/replacement of one or more valves. One subject experienced two valve migration events requiring removal/replacement of valves. CONCLUSIONS EBV in patients with homogeneous emphysema without collateral ventilation results in clinically meaningful benefits of improved lung function, exercise tolerance, and quality of life.
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Affiliation(s)
- Arschang Valipour
- 1 Ludwig Boltzmann Institute for COPD and Respiratory Epidemiology, Otto Wagner Spital, Vienna, Austria
| | - Dirk-Jan Slebos
- 2 Department of Pulmonary Diseases, University of Groningen, and University Medical Center Groningen, Groningen, the Netherlands
| | - Felix Herth
- 3 Department of Pneumology and Critical Care Medicine, Thoraxklinik, University of Heidelberg and Translational Lung Research Center Heidelberg, German Center for Lung Research, Heidelberg, Germany
| | - Kaid Darwiche
- 4 Department of Interventional Pneumology, Ruhrlandklinik, West German Lung Center, University Clinic Essen, Essen, Germany
| | - Manfred Wagner
- 5 Department of Respiratory Medicine, Allergology and Sleep Medicine, General Hospital Nuernberg, and Paracelsus Medical University, Nuremberg, Germany
| | - Joachim H Ficker
- 5 Department of Respiratory Medicine, Allergology and Sleep Medicine, General Hospital Nuernberg, and Paracelsus Medical University, Nuremberg, Germany
| | - Christoph Petermann
- 6 Lungenabteilung, Thoraxzentrum Hamburg, Asklepios Klinik, Hamburg, Germany
| | | | | | - Ralf Eberhardt
- 3 Department of Pneumology and Critical Care Medicine, Thoraxklinik, University of Heidelberg and Translational Lung Research Center Heidelberg, German Center for Lung Research, Heidelberg, Germany
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Lee SW, Lee SM, Shin SY, Park TS, Oh SY, Kim N, Hong Y, Lee JS, Oh YM, Lee SD, Seo JB. Improvement in Ventilation-Perfusion Mismatch after Bronchoscopic Lung Volume Reduction: Quantitative Image Analysis. Radiology 2017; 285:250-260. [PMID: 28510483 DOI: 10.1148/radiol.2017162148] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Purpose To evaluate whether bronchoscopic lung volume reduction (BLVR) increases ventilation and therefore improves ventilation-perfusion (V/Q) mismatch. Materials and Methods All patients provided written informed consent to be included in this study, which was approved by the Institutional Review Board (2013-0368) of Asan Medical Center. The physiologic changes that occurred after BLVR were measured by using xenon-enhanced ventilation and iodine-enhanced perfusion dual-energy computed tomography (CT). Patients with severe emphysema plus hyperinflation who did not respond to usual treatments were eligible. Pulmonary function tests, the 6-minute walking distance (6MWD) test, quality of life assessment, and dual-energy CT were performed at baseline and 3 months after BLVR. The effect of BLVR was assessed with repeated-measures analysis of variance. Results Twenty-one patients were enrolled in this study (median age, 68 years; mean forced expiratory volume in 1 second [FEV1], 0.75 L ± 0.29). After BLVR, FEV1 (P < .001) and 6MWD (P = .002) improved significantly. Despite the reduction in lung volume (-0.39 L ± 0.44), both ventilation per voxel (P < .001) and total ventilation (P = .01) improved after BLVR. However, neither perfusion per voxel (P = .16) nor total perfusion changed significantly (P = .49). Patients with lung volume reduction of 50% or greater had significantly better improvement in FEV1 (P = .02) and ventilation per voxel (P = .03) than patients with lung volume reduction of less than 50%. V/Q mismatch also improved after BLVR (P = .005), mainly owing to the improvement in ventilation. Conclusion The dual-energy CT analyses showed that BLVR improved ventilation and V/Q mismatch. This increased lung efficiency may be the primary mechanism of improvement after BLVR, despite the reduction in lung volume. © RSNA, 2017 Online supplemental material is available for this article.
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Affiliation(s)
- Sei Won Lee
- From the Department of Pulmonary and Critical Care Medicine and Clinical Research Center for Chronic Obstructive Airway Diseases (S.W.L., T.S.P., J.S.L., Y.M.O., S.D.L.) and Department of Radiology and Research Institute of Radiology (S.M.L., S.Y.S., S.Y.O., N.K., J.B.S.), Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 138-736, Korea; Department of Radiology, Kyung Hee University Hospital, College of Medicine, Kyung Hee University, Seoul, Korea (S.Y.S.); Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea (T.S.P.); and Department of Internal Medicine, College of Medicine, Kangwon National University, Chuncheon, Korea (Y.H.)
| | - Sang Min Lee
- From the Department of Pulmonary and Critical Care Medicine and Clinical Research Center for Chronic Obstructive Airway Diseases (S.W.L., T.S.P., J.S.L., Y.M.O., S.D.L.) and Department of Radiology and Research Institute of Radiology (S.M.L., S.Y.S., S.Y.O., N.K., J.B.S.), Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 138-736, Korea; Department of Radiology, Kyung Hee University Hospital, College of Medicine, Kyung Hee University, Seoul, Korea (S.Y.S.); Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea (T.S.P.); and Department of Internal Medicine, College of Medicine, Kangwon National University, Chuncheon, Korea (Y.H.)
| | - So Youn Shin
- From the Department of Pulmonary and Critical Care Medicine and Clinical Research Center for Chronic Obstructive Airway Diseases (S.W.L., T.S.P., J.S.L., Y.M.O., S.D.L.) and Department of Radiology and Research Institute of Radiology (S.M.L., S.Y.S., S.Y.O., N.K., J.B.S.), Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 138-736, Korea; Department of Radiology, Kyung Hee University Hospital, College of Medicine, Kyung Hee University, Seoul, Korea (S.Y.S.); Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea (T.S.P.); and Department of Internal Medicine, College of Medicine, Kangwon National University, Chuncheon, Korea (Y.H.)
| | - Tai Sun Park
- From the Department of Pulmonary and Critical Care Medicine and Clinical Research Center for Chronic Obstructive Airway Diseases (S.W.L., T.S.P., J.S.L., Y.M.O., S.D.L.) and Department of Radiology and Research Institute of Radiology (S.M.L., S.Y.S., S.Y.O., N.K., J.B.S.), Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 138-736, Korea; Department of Radiology, Kyung Hee University Hospital, College of Medicine, Kyung Hee University, Seoul, Korea (S.Y.S.); Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea (T.S.P.); and Department of Internal Medicine, College of Medicine, Kangwon National University, Chuncheon, Korea (Y.H.)
| | - Sang Young Oh
- From the Department of Pulmonary and Critical Care Medicine and Clinical Research Center for Chronic Obstructive Airway Diseases (S.W.L., T.S.P., J.S.L., Y.M.O., S.D.L.) and Department of Radiology and Research Institute of Radiology (S.M.L., S.Y.S., S.Y.O., N.K., J.B.S.), Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 138-736, Korea; Department of Radiology, Kyung Hee University Hospital, College of Medicine, Kyung Hee University, Seoul, Korea (S.Y.S.); Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea (T.S.P.); and Department of Internal Medicine, College of Medicine, Kangwon National University, Chuncheon, Korea (Y.H.)
| | - Namkug Kim
- From the Department of Pulmonary and Critical Care Medicine and Clinical Research Center for Chronic Obstructive Airway Diseases (S.W.L., T.S.P., J.S.L., Y.M.O., S.D.L.) and Department of Radiology and Research Institute of Radiology (S.M.L., S.Y.S., S.Y.O., N.K., J.B.S.), Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 138-736, Korea; Department of Radiology, Kyung Hee University Hospital, College of Medicine, Kyung Hee University, Seoul, Korea (S.Y.S.); Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea (T.S.P.); and Department of Internal Medicine, College of Medicine, Kangwon National University, Chuncheon, Korea (Y.H.)
| | - Yoonki Hong
- From the Department of Pulmonary and Critical Care Medicine and Clinical Research Center for Chronic Obstructive Airway Diseases (S.W.L., T.S.P., J.S.L., Y.M.O., S.D.L.) and Department of Radiology and Research Institute of Radiology (S.M.L., S.Y.S., S.Y.O., N.K., J.B.S.), Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 138-736, Korea; Department of Radiology, Kyung Hee University Hospital, College of Medicine, Kyung Hee University, Seoul, Korea (S.Y.S.); Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea (T.S.P.); and Department of Internal Medicine, College of Medicine, Kangwon National University, Chuncheon, Korea (Y.H.)
| | - Jae Seung Lee
- From the Department of Pulmonary and Critical Care Medicine and Clinical Research Center for Chronic Obstructive Airway Diseases (S.W.L., T.S.P., J.S.L., Y.M.O., S.D.L.) and Department of Radiology and Research Institute of Radiology (S.M.L., S.Y.S., S.Y.O., N.K., J.B.S.), Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 138-736, Korea; Department of Radiology, Kyung Hee University Hospital, College of Medicine, Kyung Hee University, Seoul, Korea (S.Y.S.); Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea (T.S.P.); and Department of Internal Medicine, College of Medicine, Kangwon National University, Chuncheon, Korea (Y.H.)
| | - Yeon-Mok Oh
- From the Department of Pulmonary and Critical Care Medicine and Clinical Research Center for Chronic Obstructive Airway Diseases (S.W.L., T.S.P., J.S.L., Y.M.O., S.D.L.) and Department of Radiology and Research Institute of Radiology (S.M.L., S.Y.S., S.Y.O., N.K., J.B.S.), Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 138-736, Korea; Department of Radiology, Kyung Hee University Hospital, College of Medicine, Kyung Hee University, Seoul, Korea (S.Y.S.); Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea (T.S.P.); and Department of Internal Medicine, College of Medicine, Kangwon National University, Chuncheon, Korea (Y.H.)
| | - Sang-Do Lee
- From the Department of Pulmonary and Critical Care Medicine and Clinical Research Center for Chronic Obstructive Airway Diseases (S.W.L., T.S.P., J.S.L., Y.M.O., S.D.L.) and Department of Radiology and Research Institute of Radiology (S.M.L., S.Y.S., S.Y.O., N.K., J.B.S.), Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 138-736, Korea; Department of Radiology, Kyung Hee University Hospital, College of Medicine, Kyung Hee University, Seoul, Korea (S.Y.S.); Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea (T.S.P.); and Department of Internal Medicine, College of Medicine, Kangwon National University, Chuncheon, Korea (Y.H.)
| | - Joon Beom Seo
- From the Department of Pulmonary and Critical Care Medicine and Clinical Research Center for Chronic Obstructive Airway Diseases (S.W.L., T.S.P., J.S.L., Y.M.O., S.D.L.) and Department of Radiology and Research Institute of Radiology (S.M.L., S.Y.S., S.Y.O., N.K., J.B.S.), Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 138-736, Korea; Department of Radiology, Kyung Hee University Hospital, College of Medicine, Kyung Hee University, Seoul, Korea (S.Y.S.); Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea (T.S.P.); and Department of Internal Medicine, College of Medicine, Kangwon National University, Chuncheon, Korea (Y.H.)
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Kobayashi K, Saeki Y, Kitazawa S, Kobayashi N, Kikuchi S, Goto Y, Sakai M, Sato Y. Three-dimensional computed tomographic volumetry precisely predicts the postoperative pulmonary function. Surg Today 2017; 47:1303-1311. [PMID: 28378062 DOI: 10.1007/s00595-017-1505-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2016] [Accepted: 02/20/2017] [Indexed: 12/25/2022]
Abstract
PURPOSE It is important to accurately predict the patient's postoperative pulmonary function. The aim of this study was to compare the accuracy of predictions of the postoperative residual pulmonary function obtained with three-dimensional computed tomographic (3D-CT) volumetry with that of predictions obtained with the conventional segment-counting method. METHODS Fifty-three patients scheduled to undergo lung cancer resection, pulmonary function tests, and computed tomography were enrolled in this study. The postoperative residual pulmonary function was predicted based on the segment-counting and 3D-CT volumetry methods. The predicted postoperative values were compared with the results of postoperative pulmonary function tests. RESULTS Regarding the linear correlation coefficients between the predicted postoperative values and the measured values, those obtained using the 3D-CT volumetry method tended to be higher than those acquired using the segment-counting method. In addition, the variations between the predicted and measured values were smaller with the 3D-CT volumetry method than with the segment-counting method. These results were more obvious in COPD patients than in non-COPD patients. CONCLUSIONS Our findings suggested that the 3D-CT volumetry was able to predict the residual pulmonary function more accurately than the segment-counting method, especially in patients with COPD. This method might lead to the selection of appropriate candidates for surgery among patients with a marginal pulmonary function.
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Affiliation(s)
- Keisuke Kobayashi
- Department of Thoracic Surgery, Division of Clinical Medicine, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575, Japan
| | - Yusuke Saeki
- Department of Thoracic Surgery, Division of Clinical Medicine, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575, Japan
| | - Shinsuke Kitazawa
- Department of Thoracic Surgery, Division of Clinical Medicine, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575, Japan
| | - Naohiro Kobayashi
- Department of Thoracic Surgery, Division of Clinical Medicine, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575, Japan
| | - Shinji Kikuchi
- Department of Thoracic Surgery, Division of Clinical Medicine, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575, Japan
| | - Yukinobu Goto
- Department of Thoracic Surgery, Division of Clinical Medicine, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575, Japan
| | - Mitsuaki Sakai
- Department of Thoracic Surgery, Division of Clinical Medicine, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575, Japan
| | - Yukio Sato
- Department of Thoracic Surgery, Division of Clinical Medicine, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575, Japan.
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Ariyaratnam P, Tcherveniakov P, Milton R, Chaudhuri N. Is preoperative hypercapnia a justified exclusion criterion for lung volume reduction surgery? Interact Cardiovasc Thorac Surg 2017; 24:273-279. [PMID: 27789728 DOI: 10.1093/icvts/ivw346] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Accepted: 09/22/2016] [Indexed: 11/14/2022] Open
Abstract
A best evidence topic in thoracic surgery was written according to a structured protocol. The question addressed was whether potential surgical candidates for lung volume reduction surgery (LVRS), who have preoperative hypercapnia, should be excluded on this basis. Using the reported search, 45 papers were found, of which 14 represented the best evidence to answer the clinical question. The author, journal, date and country of publication, patient group studied, study type, relevant outcomes, results and study weaknesses were tabulated. Of these, seven papers showed a significant (P < 0.05) improvement in postoperative forced expiratory volume in 1 second (FEV1) at up to 6 months in hypercapnic patients. There were six papers which found significant decreases in postoperative arterial carbon dioxide partial pressures (PaCO2) levels following LVRS up to 6 months. There were three papers which showed significant (P < 0.05) improvements in the 6-min walk test in hypercapnic patients following LVRS. Only two papers showed an increased operative mortality in the hypercapnic group compared to the normocapnic group, while nine papers did not find a difference in perioperative mortality. The only randomized controlled study, the landmark NETT study, excluded patients with severe hypercapnia (PaCO2 >55 mmHg and >60 mmHg) and the mean PaCO2 in the surgical and medical group were 43.3 ± 5.9 and 43.0 ± 5.8, respectively. We conclude that the evidence is not strong enough to consider hypercapnia in isolation as high risk or unsuitable for LVRS.
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Affiliation(s)
| | | | - Richard Milton
- Department of Thoracic Surgery, Leeds Teaching Hospitals, Leeds, UK
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Abstract
BACKGROUND Lung volume reduction surgery (LVRS) performed to treat patients with severe diffuse emphysema was reintroduced in the nineties. Lung volume reduction surgery aims to resect damaged emphysematous lung tissue, thereby increasing elastic properties of the lung. This treatment is hypothesised to improve long-term daily functioning and quality of life, although it may be costly and may be associated with risks of morbidity and mortality. Ten years have passed since the last version of this review was prepared, prompting us to perform an update. OBJECTIVES The objective of this review was to gather all available evidence from randomised controlled trials comparing the effectiveness of lung volume reduction surgery (LVRS) versus non-surgical standard therapy in improving health outcomes for patients with severe diffuse emphysema. Secondary objectives included determining which subgroup of patients benefit from LVRS and for which patients LVRS is contraindicated, to establish the postoperative complications of LVRS and its morbidity and mortality, to determine which surgical approaches for LVRS are most effective and to calculate the cost-effectiveness of LVRS. SEARCH METHODS We identified RCTs by using the Cochrane Airways Group Chronic Obstructive Pulmonary Disease (COPD) register, in addition to the online clinical trials registers. Searches are current to April 2016. SELECTION CRITERIA We included RCTs that studied the safety and efficacy of LVRS in participants with diffuse emphysema. We excluded studies that investigated giant or bullous emphysema. DATA COLLECTION AND ANALYSIS Two independent review authors assessed trials for inclusion and extracted data. When possible, we combined data from more than one study in a meta-analysis using RevMan 5 software. MAIN RESULTS We identified two new studies (89 participants) in this updated review. A total of 11 studies (1760 participants) met the entry criteria of the review, one of which accounted for 68% of recruited participants. The quality of evidence ranged from low to moderate owing to an unclear risk of bias across many studies, lack of blinding and low participant numbers for some outcomes. Eight of the studies compared LVRS versus standard medical care, one compared two closure techniques (stapling vs laser ablation), one looked at the effect of buttressing the staple line on the effectiveness of LVRS and one compared traditional 'resectional' LVRS with a non-resectional surgical approach. Participants completed a mandatory course of pulmonary rehabilitation/physical training before the procedure commenced. Short-term mortality was higher for LVRS (odds ratio (OR) 6.16, 95% confidence interval (CI) 3.22 to 11.79; 1489 participants; five studies; moderate-quality evidence) than for control, but long-term mortality favoured LVRS (OR 0.76, 95% CI 0.61 to 0.95; 1280 participants; two studies; moderate-quality evidence). Participants identified post hoc as being at high risk of death from surgery were those with particularly impaired lung function, poor diffusing capacity and/or homogenous emphysema. Participants with upper lobe-predominant emphysema and low baseline exercise capacity showed the most favourable outcomes related to mortality, as investigators reported no significant differences in early mortality between participants treated with LVRS and those in the control group (OR 0.87, 95% CI 0.23 to 3.29; 290 participants; one study), as well as significantly lower mortality at the end of follow-up for LVRS compared with control (OR 0.45, 95% CI 0.26 to 0.78; 290 participants; one study). Trials in this review furthermore provided evidence of low to moderate quality showing that improvements in lung function parameters other than forced expiratory volume in one second (FEV1), quality of life and exercise capacity were more likely with LVRS than with usual follow-up. Adverse events were more common with LVRS than with control, specifically the occurrence of (persistent) air leaks, pulmonary morbidity (e.g. pneumonia) and cardiovascular morbidity. Although LVRS leads to an increase in quality-adjusted life-years (QALYs), the procedure is relatively costly overall. AUTHORS' CONCLUSIONS Lung volume reduction surgery, an effective treatment for selected patients with severe emphysema, may lead to better health status and lung function outcomes, specifically for patients who have upper lobe-predominant emphysema with low exercise capacity, but the procedure is associated with risks of early mortality and adverse events.
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Affiliation(s)
| | | | - Leong Ung Tiong
- The Queen Elizabeth HospitalDepartment of SurgeryAdelaideAustralia
| | - Brian J Smith
- The University of AdelaideSchool of MedicineAdelaideAustralia
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Overview of the Novel and Improved Pulmonary Ventilation-Perfusion Imaging Applications in the Era of SPECT/CT. AJR Am J Roentgenol 2016; 207:1307-1315. [PMID: 27726408 DOI: 10.2214/ajr.15.15071] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
OBJECTIVE In this article, we describe the concepts of ventilation-perfusion planar, SPECT, and SPECT/CT and outline the advantages of integrated ventilation-perfusion SPECT/CT over planar imaging. We present an overview of the traditional and new applications of ventilation-perfusion scintigraphy. CONCLUSION SPECT/CT has improved the diagnostic accuracy of ventilation-perfusion imaging and opened the door for a new spectrum of applications.
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Persson P, Lundin S, Stenqvist O. Transpulmonary and pleural pressure in a respiratory system model with an elastic recoiling lung and an expanding chest wall. Intensive Care Med Exp 2016; 4:26. [PMID: 27645151 PMCID: PMC5028371 DOI: 10.1186/s40635-016-0103-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Accepted: 09/10/2016] [Indexed: 11/28/2022] Open
Abstract
Background We have shown in acute lung injury patients that lung elastance can be determined by a positive end-expiratory pressure (PEEP) step procedure and proposed that this is explained by the spring-out force of the rib cage off-loading the chest wall from the lung at end-expiration. The aim of this study was to investigate the effect of the expanding chest wall on pleural pressure during PEEP inflation by building a model with an elastic recoiling lung and an expanding chest wall complex. Methods Test lungs with a compliance of 19, 38, or 57 ml/cmH2O were placed in a box connected to a plastic container, 3/4 filled with water, connected to a water sack of 10 l, representing the abdomen. The space above the water surface and in the lung box constituted the pleural space. The contra-directional forces of the recoiling lung and the expanding chest wall were obtained by evacuating the pleural space to a negative pressure of 5 cmH2O. Chest wall elastance was increased by strapping the plastic container. Pressure was measured in the airway and pleura. Changes in end-expiratory lung volume (ΔEELV), during PEEP steps of 4, 8, and 12 cmH2O, were determined in the isolated lung, where airway equals transpulmonary pressure and in the complete model as the cumulative inspiratory-expiratory tidal volume difference. Transpulmonary pressure was calculated as airway minus pleural pressure. Results Lung pressure/volume curves of an isolated lung coincided with lung P/V curves in the complete model irrespective of chest wall stiffness. ΔEELV was equal to the size of the PEEP step divided by lung elastance (EL), ΔEELV = ΔPEEP/EL. The end-expiratory “pleural” pressure did not increase after PEEP inflation, and consequently, transpulmonary pressure increased as much as PEEP was increased. Conclusions The rib cage spring-out force causes off-loading of the chest wall from the lung and maintains a negative end-expiratory “pleural” pressure after PEEP inflation. The behavior of the respiratory system model confirms that lung elastance can be determined by a simple PEEP step without using esophageal pressure measurements.
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Affiliation(s)
- Per Persson
- Department of Anesthesiology and Intensive Care, Sahlgrenska University Hospital, Blå Stråket 5, 413 45, Gothenburg, Sweden
| | - Stefan Lundin
- Department of Anesthesiology and Intensive Care, Sahlgrenska University Hospital, Blå Stråket 5, 413 45, Gothenburg, Sweden
| | - Ola Stenqvist
- Department of Anesthesiology and Intensive Care, Sahlgrenska University Hospital, Blå Stråket 5, 413 45, Gothenburg, Sweden.
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McKeough ZJ, Alison JA, Bye PTP. Reduction in resting energy expenditure following lung volume reduction surgery in subjects with chronic obstructive pulmonary disease. Chron Respir Dis 2016; 1:197-202. [PMID: 16281646 DOI: 10.1191/1479972304cd043xx] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Study objectives: Some subjects with COPD have an elevated resting energy expenditure (REE)which may be related to an increased work of breathing at rest. The purpose of this study was to examine the effect of lung volume reduction surgery (LVRS) on REE and body weight. Design: Ten subjects with COPD were recruited (mean age + SD = 61.4 + 6.1 years). At baseline (which was following preoperative pulmonary rehabilitation) and four months following LVRS (combined with postoperative pulmonary rehabilitation), each subject had tests of lung function, REE via indirect calorimetry using a canopy system, six minute walk distance (6MWD) and quality of life (QoL) using the St George's Hospital Respiratory Questionnaire (SGRQ). Measurements: The FEV, (% predicted) increased from 27.7 + 5.8% (mean + SD) at baseline to 33.9 + 7.8% following LVRS (P < 0.05). REE (% predicted) was 110 + 9.8% at baseline and decreased to 106 + 6.7% following LVRS (P = 0.04). Body mass index (BMI) following LVRS was unchanged (P = 0.67). No correlation between the change in BMI and change in REE was shown (r2 = 0.3, P = 0.1). Therewas a significant improvement in QoL following LVRS (P < 0.001). 6MWD also significantly increased from 354 + 83 m to 412 + 82 m following LVRS (P = 0.001). Conclusion: Whilst there was an increase in lung function and a reduction in REE following LVRS, there was no corresponding change to body weight. The improvement in REE following LVRS may be related to an improvement in work of breathing.
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Affiliation(s)
- Z J McKeough
- School of Physiotherapy, Faculty of Health Sciences, Sydney University, Australia.
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McKeough ZJ, Alison JA, Bayfield MS, Bye PTP. Supported and unsupported arm exercise capacity following lung volume reduction surgery: a pilot study. Chron Respir Dis 2016; 2:59-65. [PMID: 16279152 DOI: 10.1191/1479972305cd074oa] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Study Objectives: Lung volume reduction surgery (LVRS) has been shown to improve lung function, leg exercise capacity and quality of life in subjects with severe COPD. This is the first study to examine the effect of LVRS on supported and unsupported arm exercise capacity. Design: Eight subjects with COPD (% pred FEV1 ±SD = 31.1 ± 9.8%) completed testing. At baseline (TI), after eight weeks pulmonary rehabilitation (T2) and four months after LVRS (T3), each subject had tests of lung function, and performed three symptom-limited exercise tests to peak work capacity:supported arm exercise (SAE), unsupported arm exercise (UAE) and leg exercise (LE).Measurements: The FEV1 (% pred) increased from 27.8 ± 7.4 (mean ± SD) at T2 to 36.3 ± 7.1 at T3 (P <0.05). Peak oxygen consumption (VO2) remained similar from TI to T2 for SAE, UAE and LE (all P=1.0) but increased from T2 to T3 (P <0.05) (SAE: T2 = 0.59 ± 0.2 L/min,T3 = 0.72 ± 0.1 L/min; UAE: T2 = 0.45 ± 0.1 L/min, T3 = 0.54 ± 0.1 L/min; LE:T2-0.68 ± 0.2 L/min, T3 = 0.81 ± 0.2 L/min). The ratio of end-expiratory lung volume to total lung capacity was reduced at peak SAE and LE from T2 to T3 (P < 0.01) (SAE:T2 = 81 ± 4.0%, T3 = 76 ± 2.7%; LE: T2-81 ± 5.1%, T3 = 75 ± 3.6%). Conclusion: There was a significant increase in SAE and UAE capacity following LVRS. Dynamic hyperinflation wras reduced during SAE following LVRS.
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Affiliation(s)
- Z J McKeough
- School of Physiotherapy, Faculty of Health Sciences, Sydney University, Australia.
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Abstract
Interest in surgical therapy for emphysema has grown phenomenally since the reintroduction of lung volume reduction surgery (LVRS). Although early results have shown promise, important controversies have also emerged. Some of the central issues include refining patient selection criteria, identifying optimal measure ments of improvement after LVRS, achieving a more complete understanding of the functional consequences after LVRS, and, most importantly, identifying the effect of LVRS, an admittedly palliative procedure, on disease progression and mortality in emphysema. Secondary issues surrounding LVRS include its role in combination with other procedures and its potentially large eco nomic impact. The National Emphysema Treatment Trial, a joint effort between the National Heart, Lung, and Blood Institute and the Health Care Financing Administration, is designed to address and clarify these and other questions about LVRS.
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Affiliation(s)
- Maria A. de Castro
- Department of Anesthesiology, Cedars-Sinai Medical Center, Los Angeles, CA
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41
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Stone IS, Barnes NC, James WY, Midwinter D, Boubertakh R, Follows R, John L, Petersen SE. Lung Deflation and Cardiovascular Structure and Function in Chronic Obstructive Pulmonary Disease. A Randomized Controlled Trial. Am J Respir Crit Care Med 2016; 193:717-26. [PMID: 26550687 DOI: 10.1164/rccm.201508-1647oc] [Citation(s) in RCA: 87] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
RATIONALE Patients with chronic obstructive pulmonary disease develop increased cardiovascular morbidity with structural alterations. OBJECTIVES To investigate through a double-blind, placebo-controlled, crossover study the effect of lung deflation on cardiovascular structure and function using cardiac magnetic resonance. METHODS Forty-five hyperinflated patients with chronic obstructive pulmonary disease were randomized (1:1) to 7 (maximum 14) days inhaled corticosteroid/long-acting β2-agonist fluticasone furoate/vilanterol 100/25 μg or placebo (7-day minimum washout). Primary outcome was change from baseline in right ventricular end-diastolic volume index versus placebo. MEASUREMENTS AND MAIN RESULTS There was a 5.8 ml/m(2) (95% confidence interval, 2.74-8.91; P < 0.001) increase in change from baseline right ventricular end-diastolic volume index and a 429 ml (P < 0.001) reduction in residual volume with fluticasone furoate/vilanterol versus placebo. Left ventricular end-diastolic and left atrial end-systolic volumes increased by 3.63 ml/m(2) (P = 0.002) and 2.33 ml/m(2) (P = 0.002). In post hoc analysis, right ventricular stroke volume increased by 4.87 ml/m(2) (P = 0.003); right ventricular ejection fraction was unchanged. Left ventricular adaptation was similar; left atrial ejection fraction improved by +3.17% (P < 0.001). Intrinsic myocardial function was unchanged. Pulmonary artery pulsatility increased in two of three locations (main +2.9%, P = 0.001; left +2.67%, P = 0.030). Fluticasone furoate/vilanterol safety profile was similar to placebo. CONCLUSIONS Pharmacologic treatment of chronic obstructive pulmonary disease has consistent beneficial and plausible effects on cardiac function and pulmonary vasculature that may contribute to favorable effects of inhaled therapies. Future studies should investigate the effect of prolonged lung deflation on intrinsic myocardial function. Clinical trial registered with www.clinicaltrials.gov (NCT 01691885).
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Affiliation(s)
- Ian S Stone
- 1 Department of Respiratory Medicine, The London Chest Hospital, Barts Health NHS Trust, London, United Kingdom.,2 William Harvey Research Institute, Queen Mary University of London, London, United Kingdom; and
| | - Neil C Barnes
- 2 William Harvey Research Institute, Queen Mary University of London, London, United Kingdom; and.,3 Global Respiratory Department, GlaxoSmithKline, Stockley Park, Uxbridge, United Kingdom
| | - Wai-Yee James
- 1 Department of Respiratory Medicine, The London Chest Hospital, Barts Health NHS Trust, London, United Kingdom
| | - Dawn Midwinter
- 3 Global Respiratory Department, GlaxoSmithKline, Stockley Park, Uxbridge, United Kingdom
| | - Redha Boubertakh
- 2 William Harvey Research Institute, Queen Mary University of London, London, United Kingdom; and
| | - Richard Follows
- 3 Global Respiratory Department, GlaxoSmithKline, Stockley Park, Uxbridge, United Kingdom
| | - Leonette John
- 1 Department of Respiratory Medicine, The London Chest Hospital, Barts Health NHS Trust, London, United Kingdom
| | - Steffen E Petersen
- 2 William Harvey Research Institute, Queen Mary University of London, London, United Kingdom; and
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Andrianopoulos V, Vanfleteren LEGW, Jarosch I, Gloeckl R, Schneeberger T, Wouters EFM, Spruit MA, Kenn K. Transcutaneous carbon-dioxide partial pressure trends during six-minute walk test in patients with very severe COPD. Respir Physiol Neurobiol 2016; 233:52-59. [PMID: 27524634 DOI: 10.1016/j.resp.2016.08.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2016] [Revised: 07/28/2016] [Accepted: 08/11/2016] [Indexed: 01/28/2023]
Abstract
BACKGROUND Transcutaneous carbon-dioxide partial-pressure (TCPCO2) can be reliably measured and may be of clinical relevance in COPD. Changes in TCPCO2 and exercise-induced hypercapnia (EIH) during six-minute walk test (6MWT) need further investigation. We aimed (1) to define patterns of TCPCO2 trends during 6MWT and (2) to study determinants of CO2-retention and EIH. METHODS Sixty-two COPD patients (age: 63±8years, FEV1: 33±10%pred.) were recruited and TCPCO2 was recorded by SenTec digital-monitoring-system during 6MWT. RESULTS Half of patients (50%) exhibited CO2-retention (TCPCO2[Δ]>4mmHg); 26% preserved and 24% reduced TCPCO2. Nineteen (31%) patients presented EIH (TCPCO2>45mmHg). EIH was associated to higher baseline-PCCO2, worse FEV1, lower inspiratory-pressures, underweight/normal BMI, and pre-walk dyspnea. Stronger determinants of CO2-retention were FEV1 and pre-walk dyspnea, whereas baseline-PCCO2 and pre-walk dyspnea better predict EIH. CONCLUSIONS PCO2 response to 6MWT is highly heterogeneous; however, very low FEV1 and elevated baseline-PCCO2 together with pre-walk dyspnea increase the risk for CO2-retention and EIH. Overweight-BMI seems to carry a protective effect against EIH in very severe COPD.
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Affiliation(s)
- Vasileios Andrianopoulos
- Department of Research and Education, CIRO+, Centre of Expertise for Chronic Organ Failure, Horn, The Netherlands; Department of Respiratory Medicine and Pulmonary Rehabilitation, Schoen Klinik Berchtesgadener Land, Schoenau am Koenigssee, Germany.
| | - Lowie E G W Vanfleteren
- Department of Research and Education, CIRO+, Centre of Expertise for Chronic Organ Failure, Horn, The Netherlands; Department of Respiratory Medicine, Maastricht University Medical Centre (MUMC+), Maastricht, The Netherlands.
| | - Inga Jarosch
- Department of Respiratory Medicine and Pulmonary Rehabilitation, Schoen Klinik Berchtesgadener Land, Schoenau am Koenigssee, Germany.
| | - Rainer Gloeckl
- Department of Respiratory Medicine and Pulmonary Rehabilitation, Schoen Klinik Berchtesgadener Land, Schoenau am Koenigssee, Germany; Department for Prevention, Rehabilitation and Sports Medicine, Klinikum Rechts der Isar, Technische Universität München (TUM), Munich, Germany.
| | - Tessa Schneeberger
- Department of Respiratory Medicine and Pulmonary Rehabilitation, Schoen Klinik Berchtesgadener Land, Schoenau am Koenigssee, Germany; Department of Pulmonary Rehabilitation, Philipps University Marburg, Marburg, Germany.
| | - Emiel F M Wouters
- Department of Research and Education, CIRO+, Centre of Expertise for Chronic Organ Failure, Horn, The Netherlands; Department of Respiratory Medicine, Maastricht University Medical Centre (MUMC+), Maastricht, The Netherlands.
| | - Martijn A Spruit
- Department of Research and Education, CIRO+, Centre of Expertise for Chronic Organ Failure, Horn, The Netherlands; REVAL - Rehabilitation Research Center, BIOMED - Biomedical Research Institute, Faculty of Medicine and Life Sciences, Hasselt University, Diepenbeek, Belgium.
| | - Klaus Kenn
- Department of Respiratory Medicine and Pulmonary Rehabilitation, Schoen Klinik Berchtesgadener Land, Schoenau am Koenigssee, Germany; Department of Pulmonary Rehabilitation, Philipps University Marburg, Marburg, Germany.
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Cook RC, Fradet G, Ostrow D, Nelems B. Lung Volume Reduction Surgery following Single-Lung Transplantation. Asian Cardiovasc Thorac Ann 2016. [DOI: 10.1177/021849239900700313] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Although single-lung transplantation is an established therapy for respiratory failure secondary to emphysema, hyperinflation of the native lung with concomitant compression of the transplanted lung is emerging as a cause of morbidity. In non-transplant emphysematous patients with hyperinflated lungs, pneumectomy was found to improve pulmonary function and quality of life. We report our experience on 5 single-lung transplant recipients with emphysema who underwent lung volume reduction surgery (pneumectomy, bullectomy, or anatomic resection) following transplantation. There were no perioperative deaths. Three patients underwent lung volume reduction because of a progressive symptomatic decline in pulmonary function that was thought to be secondary to hyperinflation of the native lung. Two of these patients had a sustained improvement in lung function and functional status over several years. Two other patients underwent lung volume reduction for removal of suspicious pulmonary nodules in the native lung. Both patients had a subsequent improvement in forced expiratory volume in one second. In our experience, lung volume reduction surgery after single-lung transplantation in emphysematous patients was a safe means of providing long-term improvement in pulmonary function.
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Affiliation(s)
| | | | | | - Bill Nelems
- Department of Thoracic Surgery Vancouver Hospital and Health Sciences Center Vancouver, British Columbia, Canada
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44
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Shigemura N, Akashi A, Nakagiri T, Ohta M, Matsuda H. Predicting the Response to Lung Volume Reduction Surgery Using Scintigraphy. Asian Cardiovasc Thorac Ann 2016; 12:33-7. [PMID: 14977739 DOI: 10.1177/021849230401200109] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This study was conducted to evaluate the use of quantitative scintigraphy with a newly designed marker to assess and predict the efficacy of lung volume reduction surgery in treating emphysema. In a series of 50 patients with severe emphysema who underwent the operation, ventilation/perfusion scintigraphy was performed and 2 markers of area ratio and lung uniformity were measured before and 6 months after surgery. The markers were correlated with the results of pulmonary function tests. The histopathological subtype of emphysema was also determined in the resected specimen and related to improvement in the markers. The markers were closely related to improvement in forced expiratory volume in 1 second, with the highest correlation being the marker lung uniformity measured by perfusion scintigraphy. Improvement in this marker was significantly greater in centrilobular than in panlobular emphysema. This quantitative method of scintigraphy could provide an excellent reflection of surgical efficacy as well as predict the surgical outcome. Additionally, it provides a mechanistic explanation for the differential improvement between the histopathological subtypes of emphysema following surgery.
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Affiliation(s)
- Norihisa Shigemura
- Division of General Thoracic Surgery, Takarazuka Municipal Hospital, Hyogo, Japan.
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45
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Edelman JD, Kotloff RM. Critical Care of the Lung Volume Reduction Surgery Patient. J Intensive Care Med 2016. [DOI: 10.1177/088506660001500402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Lung volume reduction surgery (LVRS) offers the potential to improve lung function, exercise tolerance, and quality of life for patients with advanced emphysema. At present, the specific role of this procedure in the treatment of advanced emphysema is a subject of ongoing investigation. LVRS is most commonly performed bilaterally via either median sternotomy or video thoracoscopic approach with resection of the most severely affected lung tissue to reduce the overall lung volume by 20–30%. This results in improvements in lung elastic recoil, airway conductance, chest wall, and diaphragmatic function leading to greater inspiratory and expiratory airflow, decreased hyperinflation, and improved exercise tolerance. The greatest improvement after LVRS occurs within 3–6 months after surgery. In the perioperative period, however, lung function may be compromised by surgical incisions, pain, chest tubes, retained secretions, pneumonia, and parenchymal injury associated with resection. The risks of LVRS are not insignificant, with reported mortality prior to hospital discharge ranging from 2.5 to 14%. Pulmonary complications may include respiratory failure, persistent air leaks, pneumonia, tracheobronchitis, retained secretions, atelectasis, pneumothorax, bleeding, and sternal wound infections or dehiscence. Cardiac and gastrointestinal complications are the most common extrathoracic causes of perioperative morbidity after LVRS. Although many patients have an uneventful postoperative course, patients who experience complications frequently require prolonged mechanical ventilation and intensive care. Critical care practitioners must therefore be familiar with LVRS, its potential complications, and the ICU management of LVRS patients.
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Affiliation(s)
- Jeffrey D. Edelman
- From the Pulmonary and Critical Care Division, Oregon Health Sciences University, Portland, OR
| | - Robert M. Kotloff
- From the Pulmonary, Allergy, and Critical Care Division, University of Pennsylvania Medical Center, Philadelphia, PA
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Mulhall P, Criner G. Non-pharmacological treatments for COPD. Respirology 2016; 21:791-809. [PMID: 27099216 DOI: 10.1111/resp.12782] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2015] [Revised: 01/13/2016] [Accepted: 01/22/2016] [Indexed: 12/01/2022]
Abstract
Chronic obstructive pulmonary disease (COPD) affects roughly 10% of the global population and is growing in prevalence annually. COPD is characterized by progressive non-reversible narrowing of airways mainly due to cigarette smoking. Therapeutic interventions aimed at altering this progressive disease course can largely be grouped into pharmacological or non-pharmacological therapies. The focus of this paper is on the non-pharmacological aspects of COPD management, reviewing the current literature to provide an evidence-based management approach. Non-pharmacological therapies reviewed in this article include the implementation of comprehensive care models utilizing a coordinated multidisciplinary team, tele-monitoring and patient-centred approach to optimize COPD care and improve compliance. Preventing progression of COPD via smoking cessation remains of paramount importance, and newer therapeutic options including electronic cigarettes show promise in small studies as cessation aids. COPD has systemic manifestations that can be ameliorated with the enrollment in pulmonary rehabilitation programmes, which focus on exercise endurance to improve dyspnoea and quality of life. Advanced therapeutics for COPD includes lung volume reduction surgery for a pre-specified cohort and minimally invasive bronchoscopic valves that in recent reviews show promise. Lastly, patients on maximal COPD therapy with progressive disease can be referred for lung transplantation; however, this often requires a highly selected and motivated patient and care team. Survival rates for lung transplantation are improving; thus, this procedure remains a viable option as more expertise and experience are gained.
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Affiliation(s)
- Patrick Mulhall
- Department of Pulmonary and Critical Care Medicine, Temple University Hospital, Philadelphia, PA, USA
| | - Gerard Criner
- Department of Pulmonary and Critical Care Medicine, Temple University Hospital, Philadelphia, PA, USA
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Faisal A, Zoumot Z, Shah PL, Neder JA, Polkey MI, Hopkinson NS. Effective Bronchoscopic Lung Volume Reduction Accelerates Exercise Oxygen Uptake Kinetics in Emphysema. Chest 2016; 149:435-446. [PMID: 26111199 DOI: 10.1378/chest.15-0404] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
BACKGROUND The impact of bronchoscopic lung volume reduction (BLVR) on physiologic responses to exercise in patients with advanced emphysema remains incompletely understood. We hypothesized that effective BLVR (e-BLVR), defined as a reduction in residual volume > 350 mL, would improve cardiovascular responses to exercise and accelerate oxygen uptake (Vo₂) kinetics. METHODS Thirty-one patients (FEV1, 36% ± 9% predicted; residual volume, 219% ± 57% predicted) underwent a constant intensity exercise test at 70% peak work rate to the limit of tolerance before and after treatment bronchoscopy (n = 24) or sham bronchoscopy (n = 7). Physiologic responses in patients who had e-BLVR (n = 16) were compared with control subjects (ineffective BLVR or sham bronchoscopy; n = 15). RESULTS e-BLVR reduced residual volume (-1.1 ± 0.5 L, P = .001), improved lung diffusing capacity by 12% ± 13% (P = .001), and increased exercise tolerance by 181 ± 214 s (P = .004). Vo₂ kinetics were accelerated in the e-BLVR group but remained unchanged in control subjects (Δ mean response time, -20% ± 29% vs 1% ± 25%, P = .04). Acceleration of Vo₂ kinetics was associated with reductions in heart rate and oxygen pulse response half-times by 8% (84 ± 14 to 76 ± 15 s, P = .04) and 20% (49 ± 16 to 34 ± 16 s, P = .01), respectively. There were also increases in heart rate and oxygen pulse amplitudes during the cardiodynamic phase post e-BLVR. Faster Vo₂ kinetics in the e-BLVR group were significantly correlated with reductions in residual volume (r = 0.66, P = .005) and improvements in inspiratory reserve volume (r = 0.56, P = .024) and exercise tolerance (r = 0.63, P = .008). CONCLUSIONS Lung deflation induced by e-BLVR accelerated exercise Vo₂ kinetics in patients with emphysema. This beneficial effect appears to be related mechanistically to an enhanced cardiovascular response to exercise, which may contribute to improved functional capacity.
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Affiliation(s)
- Azmy Faisal
- Faculty of Physical Education for Men, Alexandria University, Alexandria, Egypt
| | - Zaid Zoumot
- The NIHR Respiratory Biomedical Research Unit at Royal Brompton and Harefield NHS Foundation Trust and Imperial College, London, England; Respiratory and Critical Care Institute, Cleveland Clinic Abu Dhabi, United Arab Emirates
| | - Pallav L Shah
- The NIHR Respiratory Biomedical Research Unit at Royal Brompton and Harefield NHS Foundation Trust and Imperial College, London, England
| | - J Alberto Neder
- Department of Medicine, Queen's University, Kingston, ON, Canada
| | - Michael I Polkey
- The NIHR Respiratory Biomedical Research Unit at Royal Brompton and Harefield NHS Foundation Trust and Imperial College, London, England
| | - Nicholas S Hopkinson
- The NIHR Respiratory Biomedical Research Unit at Royal Brompton and Harefield NHS Foundation Trust and Imperial College, London, England.
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49
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Lammi MR, Marchetti N, Criner GJ. Hyperinflation: A Potential Target for Treatment of Vascular Disease in Emphysema? Am J Respir Crit Care Med 2015; 192:269-70. [PMID: 26230228 DOI: 10.1164/rccm.201505-1030ed] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Matthew R Lammi
- 1 Section of Pulmonary/Critical Care and Allergy/Immunology Louisiana State University Health Sciences Center New Orleans, Louisiana
| | - Nathaniel Marchetti
- 2 Department of Thoracic Medicine and Surgery Temple University School of Medicine Philadelphia, Pennsylvania
| | - Gerard J Criner
- 2 Department of Thoracic Medicine and Surgery Temple University School of Medicine Philadelphia, Pennsylvania
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50
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Clarenbach CF, Sievi NA, Brock M, Schneiter D, Weder W, Kohler M. Lung Volume Reduction Surgery and Improvement of Endothelial Function and Blood Pressure in Patients with Chronic Obstructive Pulmonary Disease. A Randomized Controlled Trial. Am J Respir Crit Care Med 2015; 192:307-14. [PMID: 26016823 DOI: 10.1164/rccm.201503-0453oc] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
RATIONALE Cardiovascular disease is a major cause of morbidity and mortality in patients with chronic obstructive pulmonary disease (COPD). Preliminary studies have shown that both airflow obstruction and systemic inflammation may contribute to endothelial dysfunction in COPD. Lung volume reduction surgery (LVRS) is a treatment option in selected patients with COPD with emphysema that improves breathing mechanics and lung function. OBJECTIVES To determine the effect of LVRS on endothelial function and systemic inflammation. METHODS We conducted a randomized controlled trial in 30 patients scheduled for LVRS. In the intervention group, immediate LVRS was performed after baseline evaluation followed by reassessment 3 months later. In the control group, reassessment followed 3 months after baseline evaluation, and thereafter LVRS was performed. MEASUREMENTS AND MAIN RESULTS The primary outcome measures were the treatment effect on endothelial function and systemic inflammation. In the LVRS group 14 patients completed the trial and 13 in the control group. LVRS led to a relative reduction in mean (SD) residual volume/total lung capacity of -12% (12%) and an increase in FEV1 of 29% (27%). Flow-mediated dilatation of the brachial artery increased in the intervention group as compared with the control group (+2.9%; 95% confidence interval, +2.1 to +3.6%; P < 0.001), whereas there was no significant change in systemic inflammation. A significant treatment effect on mean blood pressure was observed (-9.0 mm Hg; 95% confidence interval, -17.5 to -0.5; P = 0.039). CONCLUSIONS Endothelial function and blood pressure are improved 3 months after LVRS in patients with severe COPD and emphysema. LVRS may therefore have beneficial effects on cardiovascular outcomes. Clinical trial registered with www.clinicaltrials.gov (NCT 01020344).
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Affiliation(s)
| | | | | | - Didier Schneiter
- 2 Department of Thoracic Surgery, University Hospital Zurich, Zurich, Switzerland; and
| | - Walter Weder
- 2 Department of Thoracic Surgery, University Hospital Zurich, Zurich, Switzerland; and
| | - Malcolm Kohler
- 1 Department of Pulmonology and.,3 Center for Integrative Human Physiology, University of Zurich, Zurich, Switzerland
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