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Fang Y, Wu J, Zhang M, Yang Y, Yao L, Liu L, Luo J, Li L, Zhang C, Qin Z. Conservative rehabilitation therapy for respiratory dysfunction due to phrenic nerve sacrifice during resection of massive mediastinal tumor: A case series study. Medicine (Baltimore) 2023; 102:e35117. [PMID: 37682133 PMCID: PMC10489249 DOI: 10.1097/md.0000000000035117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Accepted: 08/17/2023] [Indexed: 09/09/2023] Open
Abstract
RATIONALE Cases of respiratory dysfunction due to phrenic nerve sacrifice during resection of massive mediastinal tumor have rarely been studied in detail. Diaphragmatic dysfunction in such cases can lead to potentially fatal respiratory and circulatory disturbances. Therefore, timely diagnosis and intervention are important. Conservative rehabilitation therapy is the first choice for respiratory dysfunction due to diaphragmatic dysfunction. PATIENT CONCERNS, DIAGNOSES AND INTERVENTIONS We present 3 patients with respiratory dysfunction due to phrenic nerve sacrifice during resection of massive mediastinal tumor. The diagnostic methods and therapeutic procedures for diaphragmatic dysfunction for each patient are described in detail. This study highlights the role of ventilator support combined with physical therapy in the treatment of respiratory dysfunction in such cases. The diagnosis of diaphragmatic dysfunction as well as the risk assessment of phrenic nerve involvement are also discussed. The modalities of ventilator support, including modes and parameters, are listed. OUTCOMES AND LESSONS This study provides experiences of diagnosis and treatment of respiratory dysfunction due to phrenic nerve sacrifice during resection of massive mediastinal tumor. Timely diagnosis of diaphragmatic dysfunction primarily relies on clinical manifestations and radiography. Conservative rehabilitation therapy can improve or restore diaphragmatic function in majority of patients, and avert or delay the need for surgical intervention. Preoperative assessment of the risk of phrenic nerve involvement is important in such cases.
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Affiliation(s)
- Yu Fang
- Department of Thoracic and Cardiovascular Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Jun Wu
- Department of Thoracic and Cardiovascular Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Maolin Zhang
- Department of Thoracic and Cardiovascular Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yang Yang
- Department of Thoracic and Cardiovascular Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Lijun Yao
- Department of Thoracic and Cardiovascular Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Lu Liu
- Department of Thoracic and Cardiovascular Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Jun Luo
- Department of Thoracic and Cardiovascular Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Linjun Li
- Department of Thoracic and Cardiovascular Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Cheng Zhang
- Department of Thoracic and Cardiovascular Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Zhiming Qin
- Department of Thoracic and Cardiovascular Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
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Fang Y, Wu J, Zhang M, Yang Y, Yao L, Liu L, Luo J, Li L, Zhang C, Qin Z. Conservative rehabilitation therapy for respiratory dysfunction due to phrenic nerve sacrifice during resection of massive mediastinal tumor.. [DOI: 10.21203/rs.3.rs-2423006/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/28/2023]
Abstract
Abstract
Background: Cases of respiratory dysfunction due to phrenic nerve sacrifice during resection of massive mediastinal tumor have rarely been studied in detail. Diaphragmatic dysfunction in such cases can lead to potentially fatal respiratory and circulatory disturbances. Therefore, timely diagnosis and intervention are important. Conservative rehabilitation therapy is the first choice for respiratory dysfunction due to diaphragmatic dysfunction.
Case presentation: We present three patients with respiratory dysfunction due to phrenic nerve sacrifice during resection of massive mediastinal tumor. The diagnostic methods and therapeutic procedures for diaphragmatic dysfunction for each patient are described in detail. This study highlights the role of ventilator support combined with physical therapy in the treatment of respiratory dysfunction in such cases. The diagnosis of diaphragmatic dysfunction as well as the risk assessment of phrenic nerve involvement are also discussed. The modalities of ventilator support, including modes and parameters, are listed.
Conclusions: This study provides experiences of diagnosis and treatment of respiratory dysfunction due to phrenic nerve sacrifice during resection of massive mediastinal tumor. Timely diagnosis of diaphragmatic dysfunction primarily relies on clinical manifestations and radiography. Conservative rehabilitation therapy can improve or restore diaphragmatic function in majority of patients, and avert or delay the need for surgical intervention. Preoperative assessment of the risk of phrenic nerve involvement is important in such cases.
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Affiliation(s)
- Yu Fang
- The First Affiliated Hospital of Chongqing Medical University
| | - Jun Wu
- The First Affiliated Hospital of Chongqing Medical University
| | - Maolin Zhang
- The First Affiliated Hospital of Chongqing Medical University
| | - Yang Yang
- The First Affiliated Hospital of Chongqing Medical University
| | - Lijun Yao
- The First Affiliated Hospital of Chongqing Medical University
| | - Lu Liu
- The First Affiliated Hospital of Chongqing Medical University
| | - Jun Luo
- The First Affiliated Hospital of Chongqing Medical University
| | - Linjun Li
- The First Affiliated Hospital of Chongqing Medical University
| | - Cheng Zhang
- The First Affiliated Hospital of Chongqing Medical University
| | - Zhiming Qin
- The First Affiliated Hospital of Chongqing Medical University
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Tong X, Tong N, Yao F, Yan J, Ci C. Clinical outcomes of high-flow nasal cannula oxygen therapy in acute heart failure patients with hypoxemia: A retrospective cohort study. Medicine (Baltimore) 2022; 101:e31124. [PMID: 36316883 PMCID: PMC9622568 DOI: 10.1097/md.0000000000031124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Acute heart failure (AHF) is life-threatening medical condition requiring hospital admission and appropriate oxygen therapy. High flow nasal cannula oxygen therapy (HFNC) has gained its popularity in treatment of AHF, however, there were less studies have demonstrated the physiological efficacy of HFNC. Purpose of this study was to evaluated the physiological responses and clinical outcomes of HFNC by comparing with noninvasive positive pressure ventilation (NPPV) therapy. A retrospective cohort investigation was conducted at emergency intensive care unit (EICU) and cardiovascular center of our hospital from June 2019 to March 2022, AHF patients with hypoxemia were reviewed. According to the received oxygen therapy model, patients were divided into HFNC and NPPV groups. Demographic data, arterial blood gas (ABG) parameter, echocardiography findings, complications and other related variables were extracted and collected from the electronic medical records (EMRs) by well-trained investigators. Physiological responses and clinical outcomes within and between 2 groups were analyzed. Finally, 156 patients with a mean age of 69.3 ± 7.1 years were reviewed, there were 82 (52.6%) male and 74 (47.4%) female patients in the sample and 70 (44.9%) and 86 (55.1%) patients classified III and IV score were included in this study, 80 patients received HFNC and 76 underwent NPPV oxygen therapy. There were no significant differences of baseline characteristics for the 2 groups patients. Changes of left ventricular function parameters, ABG and clinical outcomes were all improved satisfactorily after 24 h medical interventions in both group, what's more, patients underwent HFNC therapy could acquire a better amelioration when compared with NPPV groups (P < .05). HFNC may be an ideal model for patients with AHF, particularly those with hypoxemia. HFNC therapy could significantly improve several objective parameters of physiological responses and clinical outcomes.
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Affiliation(s)
- Xiao Tong
- Department of Orthopedic Surgery, The Second Hospital of Tangshan, Tangshan, Hebei, P.R. China
| | - Ningning Tong
- Hengshui central blood station, Hengshui, Hebei, P.R. China
| | - Feifei Yao
- Department of Cerebrovascular Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei1, P.R. China
| | - Jing Yan
- Department of Cardiology, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, P.R. China
| | - Caizhe Ci
- Department of Cardiology, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, P.R. China
- *Correspondence: Caizhe Ci, Department of Cardiology, The Third Hospital of Hebei Medical University, Add: No. 139 Ziqiang Road, Shijiazhuang, 050051, Hebei Province, P.R. China (e-mail: )
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Kotanen P, Brander P, Kreivi HR. The prevalence of non-invasive ventilation and long-term oxygen treatment in Helsinki University Hospital area, Finland. BMC Pulm Med 2022; 22:248. [PMID: 35752824 PMCID: PMC9233351 DOI: 10.1186/s12890-022-02044-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Accepted: 06/14/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Chronic respiratory failure (CRF) can be treated at home with non-invasive ventilation (NIV) and/or long-term oxygen (LTOT). The prevalence of these treatments is largely unknown. We aimed to clarify the prevalence and indications of the treatments, and the three-year mortality of the treated patients in the Helsinki University Hospital (HUH) area in Finland. METHODS In this retrospective study we analyzed the prevalence of adult CRF patients treated with NIV and/or LTOT on 1.1.2018 and followed these patients until 1.1.2021. Data collected included the underlying diagnosis, patient characteristics, information on treatment initiation and from the last follow-up visit, and mortality during the three-year follow-up. Patients with home invasive mechanical ventilation or sleep apnea were excluded. RESULTS On 1.1.2018, we had a total of 815 patients treated with NIV and/or LTOT in the Helsinki University Hospital (HUH) area, with a population of 1.4 million. The prevalence of NIV was 35.4 per 100,000, of LTOT 24.6 per 100,000 and of the treatments combined 60.0 per 100,000. Almost half, 44.5%, were treated with NIV, 41.0% with LTOT, and 14.4% underwent both. The most common diagnostic groups were chronic obstructive pulmonary disease (COPD) (33.3%) and obesity-hypoventilation syndrome (OHS) (26.6%). The three-year mortality in all patients was 45.2%. In the COPD and OHS groups the mortality was 61.3% and 21.2%. In NIV treated patients, the treatment durations varied from COPD patients 5.3 years to restrictive chest wall disease patients 11.4 years. The age-adjusted Charlson co-morbidity index (ACCI) median for all patients was 3.0. CONCLUSIONS NIV and LTOT are common treatments in CRF. The prevalence in HUH area was comparable to other western countries. As the ACCI index shows, the treated patients were fragile, with multiple co-morbidities, and their mortality was high. Treatment duration and survival vary greatly depending on the underlying diagnosis.
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Affiliation(s)
- Petra Kotanen
- HUH Heart and Lung Center, University of Helsinki and Helsinki University Hospital, (Haartmaninkatu 4), P.O. Box 372, 00029, Helsinki, Finland. .,Doctoral Programme in Clinical Research, University of Helsinki, Helsinki, Finland.
| | - Pirkko Brander
- HUH Heart and Lung Center, University of Helsinki and Helsinki University Hospital, (Haartmaninkatu 4), P.O. Box 372, 00029, Helsinki, Finland
| | - Hanna-Riikka Kreivi
- HUH Heart and Lung Center, University of Helsinki and Helsinki University Hospital, (Haartmaninkatu 4), P.O. Box 372, 00029, Helsinki, Finland
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Hannan LM, De Losa R, Romeo N, Muruganandan S. Diaphragm dysfunction: A comprehensive review from diagnosis to management. Intern Med J 2021; 52:2034-2045. [PMID: 34402156 DOI: 10.1111/imj.15491] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 06/08/2021] [Accepted: 06/27/2021] [Indexed: 11/29/2022]
Abstract
Although the diaphragm represents a critical component of the respiratory pump, the clinical presentations of diaphragm dysfunction are often non-specific and can be mistaken for other more common causes of dyspnoea. While acute bilateral diaphragm dysfunction typically presents dramatically, progressive diaphragm dysfunction associated with neuromuscular disorders and unilateral hemidiaphragm dysfunction may be identified incidentally or by recognising subtle associated symptoms. Diaphragm dysfunction should be considered in individuals with unexplained dyspnoea, restrictive respiratory function tests or abnormal diaphragm position on plain chest imaging. A higher index of suspicion should occur for individuals with profound orthopnoea, those who have undergone procedures in proximity to the phrenic nerve(s) or those with co-morbid conditions that are associated with diaphragm dysfunction, particularly neuromuscular disorders. A systematic approach to the evaluation of diaphragm function using non-invasive diagnostic techniques such as respiratory function testing and diaphragm imaging can often confirm a diagnosis. Neurophysiological assessment may confirm diaphragm dysfunction and assist in identifying an underlying cause. Identifying those with or at risk of respiratory failure can allow institution of respiratory support, while specific cases may also benefit from surgical plication or phrenic nerve pacing techniques. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Liam M Hannan
- Department of Respiratory Medicine, Northern Health, Epping, Victoria, Australia.,Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne Medicine
| | - Rebekah De Losa
- Department of Respiratory Medicine, Northern Health, Epping, Victoria, Australia
| | - Nicholas Romeo
- Department of Respiratory Medicine, Northern Health, Epping, Victoria, Australia
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Tarulli A. Proximal and Generalized Weakness. Neurology 2021. [DOI: 10.1007/978-3-030-55598-6_10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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"Tricks and tips for home mechanical ventilation" Home mechanical ventilation: set-up and monitoring protocols. Pulmonology 2020; 27:144-150. [PMID: 32912752 DOI: 10.1016/j.pulmoe.2020.08.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 07/31/2020] [Accepted: 08/01/2020] [Indexed: 11/22/2022] Open
Abstract
In this part of the review series "Tricks and tips for home mechanical ventilation", we will discuss the evidence with regard to the place and manner of home mechanical ventilation initiation and follow-up. Outsourcing more and more of this chronic care to the home situation is a big challenge for the future: especially for the home situation, monitoring has to be non-invasive, reliable and easy to use, data security needs to be ensured, signals need to be integrated and preferably automatically processed and algorithms need to be developed based on clinically relevant outcomes.
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Wijkstra P, Duiverman M. Home Mechanical Ventilation: A Fast-Growing Treatment Option in Chronic Respiratory Failure. Chest 2020; 158:26-27. [PMID: 32654706 DOI: 10.1016/j.chest.2020.03.020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Accepted: 03/16/2020] [Indexed: 11/26/2022] Open
Affiliation(s)
- Peter Wijkstra
- Department of Pulmonary Diseases/Home Mechanical Ventilation, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands.
| | - Marieke Duiverman
- Department of Pulmonary Diseases/Home Mechanical Ventilation, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands
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Yüksel A, Çiftçi F, Çiledağ A, Kaya A. The effects of home noninvasive ventilation on the quality of life and physiological parameters of patients with chronic respiratory failure. CLINICAL RESPIRATORY JOURNAL 2020; 14:880-888. [PMID: 32460414 DOI: 10.1111/crj.13221] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Revised: 04/01/2020] [Accepted: 05/15/2020] [Indexed: 11/28/2022]
Abstract
INTRODUCTION Home noninvasive mechanical ventilation (HNIV) in patients with chronic hypercapnic respiratory failure (CHRF) may improve the health-related quality of life (HRQoL) and reduce hospitalizations. OBJECTIVE To determine the effects of HNIV on HRQoL, sleep quality and hospitalization rates in restrictive thoracic diseases (RTD) and chronic obstructive pulmonary disease (COPD) patients with CHRF. METHODS In this prospective, single center study patients divided into two groups; the COPD and the RTD groups. HRQoL assessed by The Medical Outcome Study 36-Item Short-form Health Survey (SF-36) and Severe Respiratory Insufficiency (SRI); the sleep quality was assessed by Epworth and Pittsburgh Sleep Quality Index questionnaires. The patients were reevaluated first month, third months, sixth months and 1 year following HNIV establishment, during which time, hospitalization rates were recorded. RESULTS Ninety (COPD n = 50, RTD n = 40) out of 102 eligible patients completed the study. Significant improvements in blood gases and HRQoL were observed in the first month of HNIV establishment and remained stable. Mean ± SD SRI summary scale improved significantly from 30 ± 12 baseline to 65 ± 16 at 1 year in COPD group (P < 0.001) and from 39 ± 13 to 63 ± 18 in RTD group (P < 0.001). HNIV reduced hospitalization rates from a mean of 1.9 ± 1.1 to 0.5 ± 0.9 in COPD group (P < 0.001) and a mean of 1.9 ± 1 to 0.5 ± 0.7 in RTD group (P < 0.001). CONCLUSION HNIV improves HRQoL, sleep quality and gas exchange and reduces hospitalizations in patients with CHRF regardless of etiology.
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Affiliation(s)
- Aycan Yüksel
- Faculty of Medicine, Department of Chest Diseases, Ankara University, Ankara, Turkey
| | - Fatma Çiftçi
- Faculty of Medicine, Department of Chest Diseases, Ankara University, Ankara, Turkey
| | - Aydın Çiledağ
- Faculty of Medicine, Department of Chest Diseases, Ankara University, Ankara, Turkey
| | - Akın Kaya
- Faculty of Medicine, Department of Chest Diseases, Ankara University, Ankara, Turkey
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Egea-Santaolalla CJ, Chiner Vives E, Díaz Lobato S, Mangado NG, Lujan Tomé M, Mediano San Andrés O. Ventilación mecánica a domicilio. OPEN RESPIRATORY ARCHIVES 2020. [DOI: 10.1016/j.opresp.2020.02.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Kim J, Bireley JD, Hayat G, Kafaie J. Effects of noninvasive ventilation in amyotrophic lateral sclerosis: The complication of bulbar impairment. CLINICAL AND TRANSLATIONAL NEUROSCIENCE 2020. [DOI: 10.1177/2514183x20914183] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Amyotrophic lateral sclerosis is a neurodegenerative illness that causes gradual loss of muscle function. Patients eventually develop bulbar impairment, requiring extensive respiratory support. Noninvasive ventilation (NIV) has gained attention as an easily accessible method with promising benefits. We conducted this systematic review to outline the therapeutic effects of NIV, add to previous publications discussing this topic by providing updates on newly completed and ongoing studies, and identify limitations that must be addressed in future trials. A search of PubMed and Cochran for relevant primary studies yielded 26 publications. Studies indicate NIV use is associated with improvements in quality of life, regardless of the severity of bulbar impairment. However, NIV’s benefits on survival were limited to patients with less bulbar impairment. In addition, our review found several limitations that undermine the efforts to establish a definitive treatment regimen. Future studies will need to address these problems in order to provide patients with better respiratory care.
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Affiliation(s)
- Junghyun Kim
- Department of Neurology and Rehabilitation, University of Illinois at Chicago, Chicago, IL, USA
| | | | - Ghazala Hayat
- Department of Neurology, Saint Louis University, Saint Louis, MO, USA
| | - Jafar Kafaie
- Department of Neurology, Saint Louis University, Saint Louis, MO, USA
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Silva IS, Pedrosa R, Azevedo IG, Forbes A, Fregonezi GAF, Dourado Junior MET, Lima SRH, Ferreira GMH. Respiratory muscle training in children and adults with neuromuscular disease. Cochrane Database Syst Rev 2019; 9:CD011711. [PMID: 31487757 PMCID: PMC6953358 DOI: 10.1002/14651858.cd011711.pub2] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
BACKGROUND Neuromuscular diseases (NMDs) are a heterogeneous group of diseases affecting the anterior horn cell of spinal cord, neuromuscular junction, peripheral nerves and muscles. NMDs cause physical disability usually due to progressive loss of strength in limb muscles, and some NMDs also cause respiratory muscle weakness. Respiratory muscle training (RMT) might be expected to improve respiratory muscle weakness; however, the effects of RMT are still uncertain. This systematic review will synthesize the available trial evidence on the effectiveness and safety of RMT in people with NMD, to inform clinical practice. OBJECTIVES To assess the effects of respiratory muscle training (RMT) for neuromuscular disease (NMD) in adults and children, in comparison to sham training, no training, standard treatment, breathing exercises, or other intensities or types of RMT. SEARCH METHODS On 19 November 2018, we searched the Cochrane Neuromuscular Specialized Register, the Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE, and Embase. On 23 December 2018, we searched the US National Institutes for Health Clinical Trials Registry (ClinicalTrials.gov), the World Health Organization International Clinical Trials Registry Platform, and reference lists of the included studies. SELECTION CRITERIA We included randomized controlled trials (RCTs) and quasi-RCTs, including cross-over trials, of RMT in adults and children with a diagnosis of NMD of any degree of severity, who were living in the community, and who did not need mechanical ventilation. We compared trials of RMT (inspiratory muscle training (IMT) or expiratory muscle training (EMT), or both), with sham training, no training, standard treatment, different intensities of RMT, different types of RMT, or breathing exercises. DATA COLLECTION AND ANALYSIS We followed standard Cochrane methodological procedures. MAIN RESULTS We included 11 studies involving 250 randomized participants with NMDs: three trials (N = 88) in people with amyotrophic lateral sclerosis (ALS; motor neuron disease), six trials (N = 112) in Duchenne muscular dystrophy (DMD), one trial (N = 23) in people with Becker muscular dystrophy (BMD) or limb-girdle muscular dystrophy, and one trial (N = 27) in people with myasthenia gravis.Nine of the trials were at high risk of bias in at least one domain and many reported insufficient information for accurate assessment of the risk of bias. Populations, interventions, control interventions, and outcome measures were often different, which largely ruled out meta-analysis. All included studies assessed lung capacity, our primary outcome, but four did not provide data for analysis (1 in people with ALS and three cross-over studies in DMD). None provided long-term data (over a year) and only one trial, in ALS, provided information on adverse events. Unscheduled hospitalisations for chest infection or acute exacerbation of chronic respiratory failure were not reported and physical function and quality of life were reported in one (ALS) trial.Amyotrophic lateral sclerosis (ALS)Three trials compared RMT versus sham training in ALS. Short-term (8 weeks) effects of RMT on lung capacity in ALS showed no clear difference in the change of the per cent predicted forced vital capacity (FVC%) between EMT and sham EMT groups (mean difference (MD) 0.70, 95% confidence interval (CI) -8.48 to 9.88; N = 46; low-certainty evidence). The mean difference (MD) in FVC% after four months' treatment was 10.86% in favour of IMT (95% CI -4.25 to 25.97; 1 trial, N = 24; low-certainty evidence), which is larger than the minimal clinically important difference (MCID, as estimated in people with idiopathic pulmonary fibrosis). There was no clear difference between IMT and sham IMT groups, measured on the Amyotrophic Lateral Sclerosis Functional Rating Scale (ALFRS; range of possible scores 0 = best to 40 = worst) (MD 0.85, 95% CI -2.16 to 3.85; 1 trial, N = 24; low-certainty evidence) or quality of life, measured on the EuroQol-5D (0 = worst to 100 = best) (MD 0.77, 95% CI -17.09 to 18.62; 1 trial, N = 24; low-certainty evidence) over the medium term (4 months). One trial report stated that the IMT protocol had no adverse effect (very low-certainty evidence).Duchenne muscular dystrophy (DMD)Two DMD trials compared RMT versus sham training in young males with DMD. In one study, the mean post-intervention (6-week) total lung capacity (TLC) favoured RMT (MD 0.45 L, 95% CI -0.24 to 1.14; 1 trial, N = 16; low-certainty evidence). In the other trial there was no clear difference in post-intervention (18 days) FVC between RMT and sham RMT (MD 0.16 L, 95% CI -0.31 to 0.63; 1 trial, N = 20; low-certainty evidence). One RCT and three cross-over trials compared a form of RMT with no training in males with DMD; the cross-over trials did not provide suitable data. Post-intervention (6-month) values showed no clear difference between the RMT and no training groups in per cent predicted vital capacity (VC%) (MD 3.50, 95% CI -14.35 to 21.35; 1 trial, N = 30; low-certainty evidence).Becker or limb-girdle muscular dystrophyOne RCT (N = 21) compared 12 weeks of IMT with breathing exercises in people with Becker or limb-girdle muscular dystrophy. The evidence was of very low certainty and conclusions could not be drawn.Myasthenia gravisIn myasthenia gravis, there may be no clear difference between RMT and breathing exercises on measures of lung capacity, in the short term (TLC MD -0.20 L, 95% CI -1.07 to 0.67; 1 trial, N = 27; low-certainty evidence). Effects of RMT on quality of life are uncertain (1 trial; N = 27).Some trials reported effects of RMT on inspiratory and/or expiratory muscle strength; this evidence was also of low or very low certainty. AUTHORS' CONCLUSIONS RMT may improve lung capacity and respiratory muscle strength in some NMDs. In ALS there may not be any clinically meaningful effect of RMT on physical functioning or quality of life and it is uncertain whether it causes adverse effects. Due to clinical heterogeneity between the trials and the small number of participants included in the analysis, together with the risk of bias, these results must be interpreted very cautiously.
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Affiliation(s)
- Ivanizia S Silva
- Federal University of Rio Grande do NorteDepartment of Physical TherapyAvenida Senador Salgado Filho 3000, Lagoa NovaBairro Lagoa NovaNatalRio Grande do NorteBrazil59072‐970
| | - Rafaela Pedrosa
- Federal University of ParaibaDepartment of Physical TherapyJoão PessoaParaibaBrazil
| | - Ingrid G Azevedo
- Ana Bezerra University HospitalPhysical TherapyAvenida Senador Salgado Filho, 3000Bairro Lagoa NovaNatalRio Grande do NorteBrazil59078‐970
- Federal University of Rio Grande do NortePhD Program in Physical TherapyAvenida Senador Salgado Filho, 3000Bairro Lagoa NovaNatalRio Grande do NorteBrazil59078‐970
| | - Anne‐Marie Forbes
- University of TasmaniaCreative Arts & Health ‐ School of Creative Arts & MediaPrivate Bag 63HobartTASAustralia7001
| | - Guilherme AF Fregonezi
- Federal University of Rio Grande do NorteDepartment of Physical TherapyAvenida Senador Salgado Filho 3000, Lagoa NovaBairro Lagoa NovaNatalRio Grande do NorteBrazil59072‐970
- Onofre Lopes University Hospital, Brazilian Company of Hospital Services (EBSERH)PneumoCardioVascular LabNatalRio Grande do NorteBrazil59078‐970
| | - Mário ET Dourado Junior
- Federal University of Rio Grande do NorteIntegrated MedicineAv. Nilo Peçanha, 620PetrópolisNatalRio Grande do NorteBrazil59012‐300
| | - Suzianne RH Lima
- Federal University of Rio Grande do NorteIntegrated MedicineAv. Nilo Peçanha, 620PetrópolisNatalRio Grande do NorteBrazil59012‐300
| | - Gardenia MH Ferreira
- Federal University of Rio Grande do NortePhD Program in Physical TherapyAvenida Senador Salgado Filho, 3000Bairro Lagoa NovaNatalRio Grande do NorteBrazil59078‐970
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Hannan LM, Rautela L, Berlowitz DJ, McDonald C, Cori JM, Sheers N, Chao C, O'Donoghue FJ, Howard ME. Randomised controlled trial of polysomnographic titration of noninvasive ventilation. Eur Respir J 2019; 53:13993003.02118-2018. [DOI: 10.1183/13993003.02118-2018] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Accepted: 03/03/2019] [Indexed: 12/23/2022]
Abstract
Noninvasive ventilation (NIV) settings determined during wakefulness may produce patient–ventilator asynchrony (PVA) during sleep, causing sleep disruption and limiting tolerance. This study investigated whether NIV titrated with polysomnography (PSG) is associated with less PVA and sleep disruption than therapy titrated during daytime alone.Treatment-naive individuals referred for NIV were randomised to control (daytime titration followed by sham polysomnographic titration) or PSG (daytime titration followed by polysomnographic titration) groups. Primary outcomes were PVA and arousal indices on PSG at 10 weeks. Secondary outcomes included adherence, gas exchange, symptoms and health-related quality of life (HRQoL).In total, 60 participants were randomised. Most (88.3%) had a neuromuscular disorder and respiratory muscle weakness but minor derangements in daytime arterial blood gases. PVA events were less frequent in those undergoing polysomnographic titration (median (interquartile range (IQR)): PSG 25.7 (12–68) events·h−1versuscontrol 41.0 (28–182) events·h−1; p=0.046), but arousals were not significantly different (median (IQR): PSG 11.4 (9–19) arousals·h−1versuscontrol 14.6 (11–19) arousals·h−1; p=0.258). Overall adherence was not different except in those with poor early adherence (<4 h·day−1) who increased their use after polysomnographic titration (mean difference: PSG 95 (95% CI 29–161) min·day−1versuscontrol −23 (95% CI −86–39) min·day−1; p=0.01). Arterial carbon dioxide tension, somnolence and sleep quality improved in both groups. There were no differences in nocturnal gas exchange or overall measures of HRQoL.NIV titrated with PSG is associated with less PVA but not less sleep disruption when compared with therapy titrated during daytime alone.
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Abstract
Purpose The purpose of this review is to discuss the pathogenesis, clinical manifestations, diagnosis and treatment, including areas of controversy and uncertainty. Recent Findings Central apnea may be due to hypoventilation or to hypocapnia following hyperventilation. The occurrence of central apnea initiates a cascade of events that perpetuates breathing instability, recurrent central apnea and upper airway narrowing. In fact, breathing instability and upper airway narrowing are key elements of central and obstructive apnea. Clinically, central apnea is noted in association with obstructive sleep apnea, heart failure, atrial fibrillation, cerebrovascular accidents tetraplegia, and chronic opioid use.Management strategy for central apnea aim to eliminate abnormal respiratory events, stabilize sleep and alleviate the underlying clinical condition. Positive pressure therapy (PAP) remains a standard therapy for central as well as obstructive apnea. Other treatment options include adaptive-servo ventilation (ASV), supplemental oxygen, phrenic nerve stimulation, and pharmacologic therapy. However, ASV is contraindicated in patients with central sleep apnea who had heart failure with reduced ejection fraction, owing to increased mortality in this population. Summary There are several therapeutic options for central apnea. Randomized controlled studies are needed to ascertain the long-term effectiveness of individual, or combination, treatment modalities in different types of central apnea.
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Affiliation(s)
- M Safwan Badr
- Department of Internal Medicine, Division of pulmonary, critical; care and sleep medicine
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15
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Hu X, Yang Y, Su J, Yao C. Meta-analysis of the relationship between amyotrophic lateral sclerosis and susceptibility to serum ferritin level elevation. ACTA ACUST UNITED AC 2018; 21:120-5. [PMID: 27094521 PMCID: PMC5107265 DOI: 10.17712/nsj.2016.2.20150482] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Objective: To study the possible relationship between amyotrophic lateral sclerosis (ALS) patients and their susceptibility to serum ferritin level elevation. Methods: We searched the PubMed, Springer, Medline, and OVID databases for any-language original research articles relating to serum ferritin levels in ALS patients published between June 2005 and June 2015. The search term used with ‘amyotrophic lateral sclerosis’, ‘ferritins’, ‘ferritin’, ‘iron’, ‘iron stores, ‘iron status, ‘iron intake’, and ‘iron consumption’. The meta-analysis software RevMan 5.0 was used for the heterogeneity test, and to test for the overall effect. Results: Six case-control studies met our inclusion criteria including data from a total of 1813 participants. The mean difference of serum ferritin levels comparing ALS to healthy controls was 69.05 (95% confidence interval: 52.56-85.54; p<0.00001); heterogeneity: p=0.03; I2=50%. The findings indicate homology in the sensitivity analysis. Funnel plot assessment indicated publication bias. Conclusion: Our results suggest that ALS is positively associated with susceptibility to the elevation of serum ferritin levels; however, further evidence is required to support this.
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Affiliation(s)
- Xiaohui Hu
- Department of Neurology, Jingzhou Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jingzhou, China
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Abstract
PURPOSE OF REVIEW Although there is no cure for motor neurone disease (MND), the advent of multidisciplinary care and neuroprotective agents has improved treatment interventions and enhanced quality of life for MND patients and their carers. RECENT FINDINGS Evidence-based multidisciplinary care, respiratory management and disease-modifying therapy have improved the outcomes of patients diagnosed with MND. Supportive approaches to nutritional maintenance and optimization of symptomatic treatments, including management of communication and neuropsychiatric issues, improve the quality of life for MND patients. SUMMARY Recent progress in the understanding of the clinical, pathophysiological and genetic heterogeneity of MND has improved the approach of clinicians to treatment. Notwithstanding improvement to care and quality of life, survival benefit has become evident with the advent of a multidisciplinary care framework, early treatment with riluzole and noninvasive ventilation. Weight maintenance remains critical, with weight loss associated with more rapid disease progression. The end-of-life phase is poorly defined and treatment is challenging, but effective symptom control through palliative care is achievable and essential. Encouragingly, current progress of clinical trials continues to close the gap towards the successful development of curative treatment in MND.
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Vandoorne E, Vrijsen B, Belge C, Testelmans D, Buyse B. Noninvasive ventilation in amyotrophic lateral sclerosis: effects on sleep quality and quality of life. Acta Clin Belg 2016; 71:389-394. [PMID: 27112318 DOI: 10.1080/17843286.2016.1173941] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
OBJECTIVES Little is known about the effects of noninvasive ventilation (NIV) on sleep quality in amyotrophic lateral sclerosis (ALS). We aim to evaluate the long-term effects of NIV on sleep quality and quality of life in patients with ALS. METHODS In this prospective observational study, 13 ALS patients were followed for one year after initiating NIV. We evaluated sleep quality, quality of life and functional status with several questionnaires: Epworth sleepiness Scale (ESS), Pittsburg sleep quality index (PSQI), Short Form 36 Health Questionnaire (SF-36), McGill Quality of Life questionnaire (McGillQoL) and revised Amyotrophic Lateral Sclerosis Functional Rating Scale scores (ALSFRS-R). RESULTS Median and interquartile range (IQR) at the start of NIV was 59 (53-65) years. The ALSFRS-R at start was 30 (24-37) (median, IQR), with three patients having severe bulbar impairment (ALSFRS-R-bulbar ≤ 9). The PaCO2 at start of NIV treatment was 48 (43-52) mmHg (median, IQR). During the one-year follow-up period, a significant decrease in the ALSFRS-R was observed. The impact of NIV in a short term (1 month) revealed a statistically significant decrease in ESS, decrease in total PSQI and of four PSQI subscales and improvement of almost all subscales of the McGill questionnaire. Long-term analyses (9 months to 1 year) revealed that amelioration in ESS and total PSQI was sustained. CONCLUSION We conclude that accurately titrated NIV in ALS patients can stabilize sleep quality and quality of life for at least one year, despite significant disease progression.
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Dangers L, Laviolette L, Georges M, Gonzalez-Bermejo J, Rivals I, Similowski T, Morelot-Panzini C. Relieving dyspnoea by non-invasive ventilation decreases pain thresholds in amyotrophic lateral sclerosis. Thorax 2016; 72:230-235. [PMID: 27507899 DOI: 10.1136/thoraxjnl-2016-208544] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Revised: 07/11/2016] [Accepted: 07/16/2016] [Indexed: 01/12/2023]
Abstract
BACKGROUND Dyspnoea is a threatening sensation of respiratory discomfort that presents many similarities with pain. Experimental dyspnoea in healthy subjects induces analgesia. This 'dyspnoea-pain counter-irritation' could, in reverse, imply that relieving dyspnoea in patients with chronic respiratory diseases would lower their pain thresholds. METHODS We first determined pressure pain thresholds in 25 healthy volunteers (22-31 years; 13 men; handheld algometer), during unloaded breathing (BASELINE) and during inspiratory threshold loading (ITL). Two levels of loading were used, adjusted to induce dyspnoea self-rated at 60% or 80% of a 10 cm visual analogue scale (ITL6 and ITL8). 18 patients with chronic respiratory failure due to amyotrophic lateral sclerosis (ALS) were then studied during unassisted breathing and after 30 and 60 min of non-invasive ventilation-NIV30 and NIV60-(same dyspnoea evaluation). RESULTS In healthy volunteers, pressure pain thresholds increased significantly in the deltoid during ITL6 (p<0.05) and ITL8 (p<0.05) and in the trapezius during ITL8 (p<0.05), validating the use of pressure pain thresholds to study dyspnoea-pain counter-irritation. In patients with ALS, the pressure pain thresholds measured in the deltoid during unassisted breathing decreased by a median of 24.5%-33.0% of baseline during NIV30 and NIV60 (p<0.05). CONCLUSION Relieving dyspnoea by NIV in patients with ALS having respiratory failure is associated with decreased pressure pain thresholds. Clinical implications have yet to be determined, but this observation suggests that patients with ALS could become more susceptible to pain after the institution of NIV, hence the need for reinforced attention towards potentially painful diagnostic and therapeutic interventions.
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Affiliation(s)
- Laurence Dangers
- Sorbonne Universités, UPMC Univ Paris 06, INSERM, UMRS1158 Neurophysiologie respiratoire expérimentale et clinique, Paris, France.,Groupe Hospitalier Pitié-Salpêtrière Charles Foix, Service de Pneumologie et Réanimation Médicale (Département 'R3S'), AP-HP, Paris, France
| | - Louis Laviolette
- Sorbonne Universités, UPMC Univ Paris 06, INSERM, UMRS1158 Neurophysiologie respiratoire expérimentale et clinique, Paris, France.,Centre de recherche de l'Institut Universitaire de Cardiologie et de Pneumologie de Québec (CRIUCPQ), Québec, Canada
| | - Marjolaine Georges
- Sorbonne Universités, UPMC Univ Paris 06, INSERM, UMRS1158 Neurophysiologie respiratoire expérimentale et clinique, Paris, France.,Groupe Hospitalier Pitié-Salpêtrière Charles Foix, Service de Pneumologie et Réanimation Médicale (Département 'R3S'), AP-HP, Paris, France
| | - Jésus Gonzalez-Bermejo
- Sorbonne Universités, UPMC Univ Paris 06, INSERM, UMRS1158 Neurophysiologie respiratoire expérimentale et clinique, Paris, France.,Groupe Hospitalier Pitié-Salpêtrière Charles Foix, Service de Pneumologie et Réanimation Médicale (Département 'R3S'), AP-HP, Paris, France
| | - Isabelle Rivals
- Sorbonne Universités, UPMC Univ Paris 06, INSERM, UMRS1158 Neurophysiologie respiratoire expérimentale et clinique, Paris, France.,Ecole Supérieure de Physique et de Chimie de la Ville de Paris, Paris, France
| | - Thomas Similowski
- Sorbonne Universités, UPMC Univ Paris 06, INSERM, UMRS1158 Neurophysiologie respiratoire expérimentale et clinique, Paris, France.,Groupe Hospitalier Pitié-Salpêtrière Charles Foix, Service de Pneumologie et Réanimation Médicale (Département 'R3S'), AP-HP, Paris, France
| | - Capucine Morelot-Panzini
- Sorbonne Universités, UPMC Univ Paris 06, INSERM, UMRS1158 Neurophysiologie respiratoire expérimentale et clinique, Paris, France.,Groupe Hospitalier Pitié-Salpêtrière Charles Foix, Service de Pneumologie et Réanimation Médicale (Département 'R3S'), AP-HP, Paris, France
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Hildyard JC, Wells DJ. Investigating Synthetic Oligonucleotide Targeting of Mir31 in Duchenne Muscular Dystrophy. PLOS CURRENTS 2016; 8. [PMID: 27525173 PMCID: PMC4972457 DOI: 10.1371/currents.md.99d88e72634387639707601b237467d7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Exon-skipping via synthetic antisense oligonucleotides represents one of the most promising potential therapies for Duchenne muscular dystrophy (DMD), yet this approach is highly sequence-specific and thus each oligonucleotide is of benefit to only a subset of patients. The discovery that dystrophin mRNA is subject to translational suppression by the microRNA miR31, and that miR31 is elevated in the muscle of DMD patients, raises the possibility that the same oligonucleotide chemistries employed for exon skipping could be directed toward relieving this translational block. This approach would act synergistically with exon skipping where possible, but by targeting the 3'UTR it would further be of benefit to the many DMD patients who express low levels of in-frame transcript. We here present investigations into the feasibility of combining exon skipping with several different strategies for miR31-modulation, using both in vitro models and the mdx mouse (the classical animal model of DMD), and monitoring effects on dystrophin at the transcriptional and translational level. We show that despite promising results from our cell culture model, our in vivo data failed to demonstrate similarly reproducible enhancement of dystrophin translation, suggesting that miR31-modulation may not be practical under current oligonucleotide approaches. Possible explanations for this disappointing outcome are discussed, along with suggestions for future investigations.
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Affiliation(s)
- John Cw Hildyard
- Department of Comparative and Biomedical Sciences, The Royal Veterinary College, London, UK
| | - Dominic J Wells
- Department of Comparative and Biomedical Sciences, The Royal Veterinary College, London, UK
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Care Practices and Health-related Quality of Life for Individuals Receiving Assisted Ventilation. A Cross-National Study. Ann Am Thorac Soc 2016; 13:894-903. [DOI: 10.1513/annalsats.201509-590oc] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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21
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MacIntyre EJ, Asadi L, Mckim DA, Bagshaw SM. Clinical Outcomes Associated with Home Mechanical Ventilation: A Systematic Review. Can Respir J 2016; 2016:6547180. [PMID: 27445559 PMCID: PMC4904519 DOI: 10.1155/2016/6547180] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Accepted: 08/23/2015] [Indexed: 11/18/2022] Open
Abstract
Background. The prevalence of patients supported with home mechanical ventilation (HMV) for chronic respiratory failure has increased. However, the clinical outcomes associated with HMV are largely unknown. Methods. We performed a systematic review of studies evaluating patients receiving HMV for indications other than obstructive lung disease, reporting at least one clinically relevant outcome including health-related quality of life (HRQL) measured by validated tools; hospitalization requirements; caregiver burden; and health service utilization. We searched MEDLINE, EMBASE, CINAHL, the Cochrane library, clinical trial registries, proceedings from selected scientific meetings, and bibliographies of retrieved citations. Results. We included 1 randomized control trial (RCT) and 25 observational studies of mixed methodological quality involving 4425 patients; neuromuscular disorders (NMD) (n = 1687); restrictive thoracic diseases (RTD) (n = 481); obesity hypoventilation syndrome (OHS) (n = 293); and others (n = 748). HRQL was generally described as good for HMV users. Mental rather than physical HRQL domains were rated higher, particularly where physical assessment was limited. Hospitalization rates and days in hospital appear to decrease with implementation of HMV. Caregiver burden associated with HMV was generally high; however, it is poorly described. Conclusion. HRQL and need for hospitalization may improve after establishment of HMV. These inferences are based on relatively few studies of marked heterogeneity and variable quality.
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Affiliation(s)
- Erika J. MacIntyre
- Division of Critical Care Medicine, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada T6G 2B7
| | - Leyla Asadi
- Department of Medicine, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada T6G 2R3
| | - Doug A. Mckim
- Division of Respirology and Respiratory Rehabilitation Services, Faculty of Medicine and Dentistry, University of Ottawa, Ottawa, ON, Canada T6G 2R3
| | - Sean M. Bagshaw
- Division of Critical Care Medicine, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada T6G 2B7
- Department of Medicine, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada T6G 2R3
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Amin R, Al-Saleh S, Narang I. Domiciliary noninvasive positive airway pressure therapy in children. Pediatr Pulmonol 2016; 51:335-48. [PMID: 26663667 DOI: 10.1002/ppul.23353] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Revised: 11/09/2015] [Accepted: 11/21/2015] [Indexed: 12/28/2022]
Abstract
There has been a dramatic increase in the past few decades in the number of children receiving noninvasive positive airway pressure (PAP) therapy at home. Although PAP therapy was first prescribed for children with obstructive sleep apnea, the indications have rapidly widened to include treatment for central hypoventilation syndromes, neuromuscular and chest wall disorders as well as primary respiratory diseases. Given the rapidly expanding use of PAP therapy in children, pediatric pulmonologists need to be familiar with the indications, technical and safety considerations as well as potential complications and challenges that may arise when caring for children using PAP therapy. This review article covers the definition of PAP therapy, modes, interfaces, devices, indications, contraindications, suggested settings, complications as well as the factors influencing the adherence.
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Affiliation(s)
- Reshma Amin
- Division of Respiratory Medicine, The Hospital for Sick Children, Toronto, Canada.,Department of Paediatrics, University of Toronto, Toronto, Canada.,Department of Child Health and Evaluative Sciences, The Hospital for Sick Children, Toronto, Canada
| | - Suhail Al-Saleh
- Division of Respiratory Medicine, The Hospital for Sick Children, Toronto, Canada.,Department of Paediatrics, University of Toronto, Toronto, Canada.,Department of Physiology and Experimental Medicine, The Hospital for Sick Children, Toronto, Canada
| | - Indra Narang
- Division of Respiratory Medicine, The Hospital for Sick Children, Toronto, Canada.,Department of Paediatrics, University of Toronto, Toronto, Canada.,Department of Physiology and Experimental Medicine, The Hospital for Sick Children, Toronto, Canada
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Farré R, Navajas D, Montserrat JM. Technology for noninvasive mechanical ventilation: looking into the black box. ERJ Open Res 2016; 2:00004-2016. [PMID: 27730162 PMCID: PMC5005145 DOI: 10.1183/23120541.00004-2016] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Accepted: 01/17/2016] [Indexed: 11/21/2022] Open
Abstract
Current devices for providing noninvasive respiratory support contain sensors and built-in intelligence for automatically modifying ventilation according to the patient's needs. These devices, including automatic continuous positive airway pressure devices and noninvasive ventilators, are technologically complex and offer a considerable number of different modes of ventilation and setting options, the details of which are sometimes difficult to capture by the user. Therefore, better predicting and interpreting the actual performance of these ventilation devices in clinical application requires understanding their functioning principles and assessing their performance under well controlled bench test conditions with simulated patients. This concise review presents an updated perspective of the theoretical basis of intelligent continuous positive airway pressure and noninvasive ventilation devices, and of the tools available for assessing how these devices respond under specific ventilation phenotypes in patients requiring breathing support. Current devices for intelligent noninvasive ventilation should be tested to better understand clinical performance http://ow.ly/XAS6Z
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Affiliation(s)
- Ramon Farré
- Unitat Biofísica i Bioenginyeria, Facultat de Medicina, Universitat de Barcelona, Barcelona, Spain; CIBER Enfermedades Respiratorias, Madrid, Spain; Institut d'Investigacions Biomèdiques August Pi Sunyer, Barcelona, Spain
| | - Daniel Navajas
- Unitat Biofísica i Bioenginyeria, Facultat de Medicina, Universitat de Barcelona, Barcelona, Spain; CIBER Enfermedades Respiratorias, Madrid, Spain; Institut de Bioenginyeria de Catalunya, Barcelona, Spain
| | - Josep M Montserrat
- CIBER Enfermedades Respiratorias, Madrid, Spain; Institut d'Investigacions Biomèdiques August Pi Sunyer, Barcelona, Spain; Sleep Lab, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain
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Noninvasive PCO2 Monitoring During Sleep for Patients with Neuromuscular Disease. Am J Phys Med Rehabil 2016; 95:e39. [DOI: 10.1097/phm.0000000000000418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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25
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Yuan Y, Sun J, Wang B, Feng P, Yang C. A noninvasive high frequency oscillation ventilator: Achieved by utilizing a blower and a valve. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2016; 87:025113. [PMID: 26931897 DOI: 10.1063/1.4942048] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
After the High Frequency Oscillatory Ventilation (HFOV) has been applied in the invasive ventilator, the new technique of noninvasive High Frequency Oscillatory Ventilation (nHFOV) which does not require opening the patient's airway has attracted much attention from the field. This paper proposes the design of an experimental positive pressure-controlled nHFOV ventilator which utilizes a blower and a special valve and has three ventilation modes: spontaneous controlled ventilation combining HFOV, time-cycled ventilation combining HFOV (T-HFOV), and continuous positive airway pressure ventilation combining HFOV. Experiments on respiratory model are conducted and demonstrated the feasibility of using nHFOV through the control of fan and valve. The experimental ventilator is able to produce an air flow with small tidal volume (VT) and a large minute ventilation volume (MV) using regular breath tubes and nasal mask (e.g., under T-HFOV mode, with a maximum tidal volume of 100 ml, the minute ventilation volume reached 14,400 ml). In the process of transmission, there is only a minor loss of oscillation pressure. (Under experimental condition and with an oscillation frequency of 2-10 Hz, peak pressure loss was around 0%-50% when it reaches the mask.).
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Affiliation(s)
- YueYang Yuan
- College of Mechanical Engineering, Donghua University, Shanghai 210620, China
| | - JianGuo Sun
- Curative Medical Technical Co., Ltd., Suzhou 215163, China
| | - Baicun Wang
- College of Chemical and Biological Engineering, Zhejiang University, 38 Zheda Road, Hangzhou 310027, China
| | - Pei Feng
- College of Mechanical Engineering, Donghua University, Shanghai 210620, China
| | - ChongChang Yang
- College of Mechanical Engineering, Donghua University, Shanghai 210620, China
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Proximal and Generalized Weakness. Neurology 2016. [DOI: 10.1007/978-3-319-29632-6_10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Ahmed RM, Newcombe REA, Piper AJ, Lewis SJ, Yee BJ, Kiernan MC, Grunstein RR. Sleep disorders and respiratory function in amyotrophic lateral sclerosis. Sleep Med Rev 2015; 26:33-42. [PMID: 26166297 DOI: 10.1016/j.smrv.2015.05.007] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Revised: 05/07/2015] [Accepted: 05/20/2015] [Indexed: 12/11/2022]
Abstract
Sleep disorders in amyotrophic lateral sclerosis (ALS) present a significant challenge to the management of patients. Issues include the maintenance of adequate ventilatory status through techniques such as non-invasive ventilation, which has the ability to modulate survival and improve patient quality of life. Here, a multidisciplinary approach to the management of these disorders is reviewed, from concepts about the underlying neurobiological basis, through to current management approaches and future directions for research.
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Affiliation(s)
- Rebekah M Ahmed
- Brain and Mind Research Institute and Department of Neurology Royal Prince Alfred Hospital, University of Sydney, Sydney, New South Wales, Australia.
| | - Rowena E A Newcombe
- NHMRC Centre for Integrated Research and Understanding of Sleep (CIRUS), Woolcock Institute of Medical Research and NeuroSleep NHMRC Centre for Research Excellence, Australia
| | - Amanda J Piper
- NHMRC Centre for Integrated Research and Understanding of Sleep (CIRUS), Woolcock Institute of Medical Research and NeuroSleep NHMRC Centre for Research Excellence, Australia; Department of Respiratory and Sleep Medicine, Royal Prince Alfred Hospital, Sydney Local Health District, Australia
| | - Simon J Lewis
- Brain and Mind Research Institute and Department of Neurology Royal Prince Alfred Hospital, University of Sydney, Sydney, New South Wales, Australia; NHMRC Centre for Integrated Research and Understanding of Sleep (CIRUS), Woolcock Institute of Medical Research and NeuroSleep NHMRC Centre for Research Excellence, Australia
| | - Brendon J Yee
- NHMRC Centre for Integrated Research and Understanding of Sleep (CIRUS), Woolcock Institute of Medical Research and NeuroSleep NHMRC Centre for Research Excellence, Australia; Department of Respiratory and Sleep Medicine, Royal Prince Alfred Hospital, Sydney Local Health District, Australia
| | - Matthew C Kiernan
- Brain and Mind Research Institute and Department of Neurology Royal Prince Alfred Hospital, University of Sydney, Sydney, New South Wales, Australia
| | - Ron R Grunstein
- NHMRC Centre for Integrated Research and Understanding of Sleep (CIRUS), Woolcock Institute of Medical Research and NeuroSleep NHMRC Centre for Research Excellence, Australia; Department of Respiratory and Sleep Medicine, Royal Prince Alfred Hospital, Sydney Local Health District, Australia
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Amyotrophic Lateral Sclerosis: Impact of Pulmonary Follow-Up and Mechanical Ventilation on Survival. A Study of 114 Cases. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.arbr.2014.10.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Veldhuis SKB, Doff MHJ, Stegenga B, Nieuwenhuis JA, Wijkstra PJ. Oral appliance to assist non-invasive ventilation in a patient with amyotrophic lateral sclerosis. Sleep Breath 2014; 19:61-3. [PMID: 24948477 DOI: 10.1007/s11325-014-1021-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Revised: 05/26/2014] [Accepted: 06/10/2014] [Indexed: 10/25/2022]
Abstract
BACKGROUND From the moment the respiratory muscle groups are affected in amyotrophic lateral sclerosis (ALS), respiratory complications will be the major cause of morbidity and mortality. Untreated respiratory muscle impairment leads to respiratory insufficiency and additionally to difficulties in airway secretion clearance. Non-invasive ventilation (NIV) is the first choice in treating respiratory insufficiency in ALS as it improves sleep-related symptoms, quality of life and life expectancy. Nevertheless, NIV is not always effective, probably due to bulbar dysfunction or anatomical abnormalities. As a result, tracheostomy ventilation (TV) may become necessary. METHODS In this case report, we present a 60-year-old female with ALS, for whom it was not possible to provide a sufficient tidal volume with NIV. A chin lift was performed while the patient was awake to see if a more anterior jaw position would lead to an increased tidal volume. As this was the case, a mandibular advancement device (MAD) was fabricated. RESULTS With a combination of a MAD and NIV, the upper airway obstructions were overcome and a good ventilation and adherence to therapy were seen. CONCLUSIONS When there is the presumption of airway obstructions in combination with an ineffective NIV, we advise to perform a chin lift to assess whether the obstructions can be overcome by a more anterior jaw position. If that is the case, NIV may be combined with MAD to establish effective ventilation and avoid the use of TV.
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Affiliation(s)
- Steffanie K B Veldhuis
- Department of Oral and Maxillofacial Surgery, University Medical Center Groningen, University of Groningen, Hanzeplein 1, P.O. Box 30.001, 9700 RB, Groningen, The Netherlands,
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Sanjuán-López P, Valiño-López P, Ricoy-Gabaldón J, Verea-Hernando H. Amyotrophic lateral sclerosis: impact of pulmonary follow-up and mechanical ventilation on survival. A study of 114 cases. Arch Bronconeumol 2014; 50:509-13. [PMID: 24931271 DOI: 10.1016/j.arbres.2014.04.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2014] [Revised: 04/04/2014] [Accepted: 04/07/2014] [Indexed: 10/25/2022]
Abstract
OBJECTIVE To study the impact of ventilatory management and treatment on the survival of patients with amyotrophic lateral sclerosis (ALS). METHOD Retrospective analysis of 114 consecutive patients admitted to a general hospital, evaluating demographic data, type of presentation, clinical management, treatment with mechanical ventilation and survival. STATISTICS descriptive and Kaplan-Meier estimator. RESULTS Sixty four patients presented initial bulbar involvement. Overall mean survival after diagnosis was 28.0 months (95%CI, 21.1-34.8). Seventy patients were referred to the pulmonary specialist (61.4%) and 43 received non-invasive ventilation (NIV) at 12.7 months (median) after diagnosis. Thirty seven patients continued to receive NIV with no subsequent invasive ventilation. The mean survival of these patients was 23.3 months (95%CI, 16.7-28.8), higher in those without bulbar involvement, although below the range of significance. Survival in the 26 patients receiving programmed NIV was higher than in the 11 patients in whom this was indicated without prior pulmonary assessment (considered following diagnosis, P<.012, and in accordance with the start of ventilation, P<.004). A total of 7 patients were treated invasively; mean survival in this group was 72 months (95%CI, 14.36-129.6), median 49.6±17.5 (95%CI, 15.3-83.8), and despite the difficulties involved in home care, acceptance and tolerance was acceptable. CONCLUSIONS Long-term mechanical ventilation prolongs survival in ALS. Programmed pulmonary assessment has a positive impact on survival of ALS patients and is key to the multidisciplinary management of this disease.
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Affiliation(s)
- Pilar Sanjuán-López
- Servicio de Neumología, Complexo Hospitalario Universitario A Coruña, CHUAC, A Coruña, España
| | - Paz Valiño-López
- Servicio de Neumología, Complexo Hospitalario Universitario A Coruña, CHUAC, A Coruña, España
| | - Jorge Ricoy-Gabaldón
- Servicio de Neumología, Complexo Hospitalario Universitario A Coruña, CHUAC, A Coruña, España
| | - Héctor Verea-Hernando
- Servicio de Neumología, Complexo Hospitalario Universitario A Coruña, CHUAC, A Coruña, España.
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