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Wilcke H, Glaubitz S, Kück F, Anten C, Liebetanz D, Schmidt J, Zschüntzsch J. Female sex and overweight are associated with a lower quality of life in patients with myasthenia gravis: a single center cohort study. BMC Neurol 2023; 23:366. [PMID: 37817097 PMCID: PMC10563278 DOI: 10.1186/s12883-023-03406-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Accepted: 09/27/2023] [Indexed: 10/12/2023] Open
Abstract
BACKGROUND Myasthenia gravis (MG) affects individuals as a chronic autoimmune disease for many years. Commonly, chronic diseases significantly reduce the patients' quality of life. Aiming to improve the future quality of life in MG, this study assessed the factors impacting quality of life. As gender-specific medicine is becoming increasingly important, this study also focused on understanding gender differences in the outcome of MG. METHODS The study is a combined monocentric, retrospective and prospective database analysis of patient records based on 2,370 presentations of 165 patients with clinically, serologically and/or electrophysiologically confirmed MG over an observation period of up to 47 years. The data collection included the following parameters: antibody status, disease severity, age, medication use, gender, and disease duration. In addition, a prospective survey was conducted on the quality of life using the Myasthenia gravis-specific 15-item Quality of Life scale (MG-QoL15) and on the activities of daily living using the MG-specific Activities of Daily Living scale (MG-ADL). RESULTS Of the 165 patients, 85 were male (51.5%) and 80 were female (48.5%). The remaining baseline characteristics (e.g. age and antibody status) were consistent with other myasthenia gravis cohorts. A high body mass index (BMI) (p = 0.005) and a high disease severity (p < 0.001) were significantly associated with lower disease-specific quality of life. Additionally, the quality of life in women with MG was significantly reduced compared to male patients (19.7 vs. 13.0 points in the MG-QoL15, p = 0.024). Gender differences were also observable in terms of the period between initial manifestation and initial diagnosis and women were significantly more impaired in their activities of daily living (MG-ADL) than men (4.8 vs. 3.0 points, p = 0.032). CONCLUSION Women with MG had significantly poorer disease specific quality of life compared to men as well as patients with a higher BMI. In order to improve the quality of life, gender-specific medicine and further investigation regarding a modification of the quality of life by lowering the BMI are essential and necessary. TRIAL REGISTRATION Study approval by the Ethics Committee of the University Medical Center Göttingen was granted (number 6/5/18).
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Affiliation(s)
- Hannah Wilcke
- Department of Neurology, University Medical Center, Göttingen, Germany
| | - Stefanie Glaubitz
- Department of Neurology, University Medical Center, Göttingen, Germany
| | - Fabian Kück
- Department of Medical Statistics, University Medical Center, Göttingen, Germany
| | - Christoph Anten
- Department of Medical Statistics, University Medical Center, Göttingen, Germany
| | - David Liebetanz
- Department of Neurology, University Medical Center, Göttingen, Germany
| | - Jens Schmidt
- Department of Neurology, University Medical Center, Göttingen, Germany
- Department of Neurology and Pain Treatment, Immanuel Clinic Rüdersdorf, University Hospital of the Brandenburg Medical School Theodor Fontane, Rüdersdorf bei Berlin, Germany
- Faculty of Health Sciences Brandenburg, Brandenburg Medical School Theodor Fontane, Rüdersdorf bei Berlin, Germany
| | - Jana Zschüntzsch
- Department of Neurology, University Medical Center, Göttingen, Germany.
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Liang H, Liu S, Wang Y, Pan J, Zhang Y, Dong X. Multi-user upper limb rehabilitation training system integrating social interaction. COMPUTERS & GRAPHICS 2023; 111:103-110. [PMID: 36694846 PMCID: PMC9854142 DOI: 10.1016/j.cag.2023.01.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 01/07/2023] [Accepted: 01/16/2023] [Indexed: 06/17/2023]
Abstract
COVID-19 causes persistent symptoms such as weakness and myasthenia in most patients. Due to the cross-infection of COVID-19, the traditional face-to-face rehabilitation services are risky for the elderly. To ensure that the elderly in urgent need of rehabilitation services receive training while minimizing the disturbance of the COVID-19 pandemic on their social activities. We have improved the existing virtual upper limb training system, and added a social factor to the system. Seniors with upper limb rehabilitation needs can use the system to compete or collaborate with others for training. In addition, a set of natural and scientific exclusive gestures have been designed under the direction of following the doctor's advice. The experiment is conducted jointly with the chief physicians of the geriatrics department in the authoritative class-A hospitals of Class III. Our experiment, which lasted for two months, showed that the virtual training system with social factors added had the best rehabilitation effect and enhanced the initiative of patients. The system has value for popularization during the COVID-19 epidemic.
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Affiliation(s)
- Hui Liang
- Zhengzhou University of Light Industry, Zhengzhou, 450000, China
| | - Shiqing Liu
- Zhengzhou University of Light Industry, Zhengzhou, 450000, China
| | - Yi Wang
- General Hospital of Pingmei Shenma Group, Pingdingshan, 467000, China
| | - Junjun Pan
- Beihang University, Beijing, 100000, China
| | - Yazhou Zhang
- Zhengzhou University of Light Industry, Zhengzhou, 450000, China
| | - Xiaohang Dong
- Zhengzhou University of Light Industry, Zhengzhou, 450000, China
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Diez Porras L, Homedes C, Alberti MA, Velez Santamaria V, Casasnovas C. Quality of Life in Myasthenia Gravis and Correlation of MG-QOL15 with Other Functional Scales. J Clin Med 2022; 11:jcm11082189. [PMID: 35456281 PMCID: PMC9025772 DOI: 10.3390/jcm11082189] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 04/04/2022] [Accepted: 04/11/2022] [Indexed: 01/25/2023] Open
Abstract
Health-related quality of life (HRQOL) in myasthenia gravis (MG) is frequently decreased. Further, there are many validated clinical scales and questionnaires to evaluate the clinical status in MG. We aimed to determine if there was an improvement in HRQOL following an intensive treatment for MG, identify which demographic and clinical features influenced patients’ HRQOL, and investigate if the questionnaire MG-QOL15 correlated with other evaluation scales. We recruited 45 patients with generalised MG who were starting immunomodulatory treatment with intravenous immunoglobulins and prednisone for the first time. At each visit, we administered several validated scales for MG. The mean MG-QOL15 score improved significantly at 4 and 6 weeks of the study. Additionally, the MG-QOL15 score correlated strong with the Myasthenia Gravis-Activities of Daily Living (MG-ADL) and the Neuro-QOL Fatigue and weakest with the Quantitative Myasthenia Gravis Scoring System (QMG). The QMG score prior to study enrolment was associated with HRQOL. We observed that HRQOL in MG improved after receiving an intensive immunomodulatory treatment and achieving better control of the symptoms. The questionnaire MG-QOL15 correlated positively with other clinical measures. As MG is a fluctuating condition, and some symptoms are difficult to examine, we direct physicians toward the use of scales and questionnaires composed of items perceived by the patient.
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Affiliation(s)
- Laura Diez Porras
- Neurometabolic Diseases Group, Bellvitge Biomedical Research Institute (IDIBELL), 199 Granvia de l’Hospitalet, 08908 L’Hospitalet de Llobregat, Spain; (L.D.P.); (C.H.); (M.A.A.); (V.V.S.)
| | - Christian Homedes
- Neurometabolic Diseases Group, Bellvitge Biomedical Research Institute (IDIBELL), 199 Granvia de l’Hospitalet, 08908 L’Hospitalet de Llobregat, Spain; (L.D.P.); (C.H.); (M.A.A.); (V.V.S.)
| | - Maria Antonia Alberti
- Neurometabolic Diseases Group, Bellvitge Biomedical Research Institute (IDIBELL), 199 Granvia de l’Hospitalet, 08908 L’Hospitalet de Llobregat, Spain; (L.D.P.); (C.H.); (M.A.A.); (V.V.S.)
- Neuromuscular Unit, Department of Neurology, Bellvitge University Hospital, Feixa Llarga Street n/n, 08907 L’Hospitalet del Llobregat, Spain
| | - Valentina Velez Santamaria
- Neurometabolic Diseases Group, Bellvitge Biomedical Research Institute (IDIBELL), 199 Granvia de l’Hospitalet, 08908 L’Hospitalet de Llobregat, Spain; (L.D.P.); (C.H.); (M.A.A.); (V.V.S.)
- Neuromuscular Unit, Department of Neurology, Bellvitge University Hospital, Feixa Llarga Street n/n, 08907 L’Hospitalet del Llobregat, Spain
| | - Carlos Casasnovas
- Neurometabolic Diseases Group, Bellvitge Biomedical Research Institute (IDIBELL), 199 Granvia de l’Hospitalet, 08908 L’Hospitalet de Llobregat, Spain; (L.D.P.); (C.H.); (M.A.A.); (V.V.S.)
- Neuromuscular Unit, Department of Neurology, Bellvitge University Hospital, Feixa Llarga Street n/n, 08907 L’Hospitalet del Llobregat, Spain
- Center for Biomedical Research on Rare Diseases (CIBERER), ISCIII, 3–5 Monforte de Lemos, Pabellón 121, 28029 Madrid, Spain
- Correspondence:
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Long-term outcome in patients with myasthenia gravis: one decade longitudinal study. J Neurol 2021; 269:2039-2045. [PMID: 34480608 DOI: 10.1007/s00415-021-10759-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2021] [Revised: 07/18/2021] [Accepted: 08/16/2021] [Indexed: 10/20/2022]
Abstract
INTRODUCTION Even treated, myasthenia gravis (MG) continues to represent a significant burden and might continuously affect patients' quality of life (QoL). The aim of our longitudinal study was to analyze QoL in a large cohort of MG patients after a 10-year follow-up period. METHODS This study comprised 78 MG patients (60% females, 50 ± 16 years old at baseline, 70% AchR positive) who were retested after 10 years. Disease severity was evaluated by MGFA classification. QoL was assessed using SF-36 questionnaire and Myasthenia Gravis-specific Questionnaire (MGQ). Hamilton rating scales for depression and anxiety (HDRS and HARS), Multidimensional Scale of Perceived Social Support (MSPSS) and Acceptance of Illness Scale (AIS) were also used. RESULTS Similar percentage of patients was in remission at both time points (42% and 45%). However, at baseline all patients were treated, while 32% were treatment-free at follow-up. SF-36, MGQ, MSPSS and AIS scores were similar at baseline and retest. Mean HDRS and HARS scores worsened during time (p < 0.05), although percentage of patients with depression and anxiety did not change significantly. Significant predictors of worse SF-36 score at retest were depression (β = - 0.45, p < 0.01), poor disease acceptance (β = - 0.44, p < 0.01) and older age (β = - 0.30, p < 0.01). Significant predictors of worse MGQ score at retest were poor disease acceptance (β = - 0.40, p < 0.01), retirement (β = - 0.36, p < 0.01), lower education (β = 0.25, p < 0.01), and depression (β = - 0.18, p < 0.05). CONCLUSIONS Although after 10 years, a significant number of MG patients were in remission, their QoL was still reduced. Neurologists should be aware that patients' perception of poor QoL may persist even if MG is well treated from a physician's perspective.
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Al-Ahmer I, Elshony H. Determinants of quality of life changes with plasmapheresis in patients with myasthenia gravis. THE EGYPTIAN JOURNAL OF NEUROLOGY, PSYCHIATRY AND NEUROSURGERY 2021. [DOI: 10.1186/s41983-021-00320-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Immunomodulation, including IVIG and plasma exchange, is useful for a crisis or severe exacerbation. Plasma exchange may be slightly faster and more effective in a myasthenic crisis than IVIG. The aim of the current study was to determine the changes in the quality of life (QOL) after plasmapheresis and factors influencing these changes.
Results
This study was conducted on 98 MG patients diagnosed as moderate to severe myasthenia gravis (according to Myasthenia Gravis Foundation of America classification), 81 patients received alternate day 5 sessions plasmapheresis (TPE group) and 17 patients were on medical treatment only (control group). All patients were subjected to full history, through clinical neurological evaluation and scored with quantitative myasthenia gravis (QMG) score for MG severity at start and after 1 m. Both groups completed the QOL questionnaire at baseline and after 1 month. The MG-QOL-15 scores were computed and we analyzed the change in the QOL scores from baseline to after plasmapheresis groups and compared it with the results for the control group. The scores in QOL scales had significantly decreased after plasmapheresis, and the improvement in QOL scores had a good correlation with the decrease in QMGS. The improvement in QOL and QMG was significantly correlated with younger age, female gender, shorter duration of the illness, presence of AchR antibodies, antibody titer, and thymus hyperplasia.
Conclusion
Plasmapheresis is effective in improving quality of life in myasthenia gravis patients and this improvement influenced by age, gender, duration of illness, presence of AchR antibodies and their titer, and the thymus pathology.
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Dong D, Chong MKC, Wu Y, Kaminski H, Cutter G, Xu X, Li H, Zhao C, Yin J, Yu S, Zhu J. Gender differences in quality of life among patients with myasthenia gravis in China. Health Qual Life Outcomes 2020; 18:296. [PMID: 32883289 PMCID: PMC7470440 DOI: 10.1186/s12955-020-01549-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Accepted: 08/28/2020] [Indexed: 11/10/2022] Open
Abstract
Background Myasthenia gravis (MG), a chronic neuromuscular disorder, can adversely affect patients’ health-related quality of life (HRQoL), especially in women. The study aimed to evaluate the difference in HRQoL of women and men MG patients and explore the factors that mediate the relationship between gender and HRQoL. Methods A cross-sectional study was conducted among 1815 patients with MG in China. The revised 15-item MG quality of life scale (MG-QOL15r) was used to access patients’ HRQoL in overall, physical, social and emotional domains. Socio-demographic information, diagnosis and treatment history, comorbidities, social support, active lifestyle and the MG activities of daily living scale (MG-ADL) were recorded and compared between women and men using the Student’s t-test and Pearson’s Chi-square test. Multivariable regression analyses were conducted to identify independent contributors to HRQoL, especially those affecting different gender. Results On average, female patients with MG reported a lower MG-QOL15r score than the males (44.49 ± 29.10 vs 49.32 ± 29.18). The association between gender and patients’ HRQoL interacted with the number of comorbidities across the overall, physical and social domains of patients. As the number of comorbidities increased, the scores of HRQoL decreased and it was faster among females than the males (p < 0.05). Moreover, unemployment, exacerbation of the disease, and active lifestyle contributed to the patients’ HRQoL across all domains. Unemployment (β = − 4.99 [95%CI, − 7.80 to − 2.18], p < 0.001) and exacerbations (β = − 8.49 [95%CI, − 11.43 to − 5.54], p < 0.001) were correlated with poorer HRQoL; while an active lifestyle had a positive impact on HRQoL (β = 0.28 [95%CI, 0.16 to 0.40], p < 0.001). Conclusions The results indicate that the HRQoL of women MG patients was lower than that of men. The relationship between gender and HRQoL is modulated by the number of comorbidities. Thus, to improve the HRQoL of women MG patients, symptomatic treatments might not be enough, their comorbid conditions should be considered as well. Additionally, employment status, MG exacerbations, and an active lifestyle have been found as determining factors of the patients’ HRQoL, which suggests future interventions should cope with these factors to improve their quality of life.
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Affiliation(s)
- Dong Dong
- JC School of Public Health and Primary Care, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, SAR, China
| | - Marc Ka-Chun Chong
- JC School of Public Health and Primary Care, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, SAR, China
| | - Yushan Wu
- JC School of Public Health and Primary Care, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, SAR, China
| | - Henry Kaminski
- Department of Neurology, The George Washington University, Washington, DC, USA
| | - Gary Cutter
- Department of Biostatistics, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Xianhao Xu
- Department of Neurology, Beijing Hospital, Beijing, China
| | - Haifeng Li
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Chongbo Zhao
- Department of Neurology, Huashan hospital, Fudan University, Shanghai, China
| | - Jian Yin
- Department of Neurology, Beijing Hospital, Beijing, China.,National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Siyue Yu
- JC School of Public Health and Primary Care, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, SAR, China.
| | - Jianfeng Zhu
- School of Social Development and Public Policy, Fudan University, Shanghai, China.
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Vitturi BK, Pellegrinelli A, Valerio BCO. Medication adherence in patients with myasthenia gravis in Brazil: a cross-sectional study. Acta Neurol Belg 2020; 120:83-89. [PMID: 31555980 DOI: 10.1007/s13760-019-01209-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Accepted: 09/16/2019] [Indexed: 10/25/2022]
Abstract
Advances in the treatment of MG have allowed most patients to effectively treat their disorder with oral medications. In parallel, non-adherence to medication treatment regimens is a worldwide health problem. Other chronic neurological disorders have already been associated with low adherence to treatment. However, the literature regarding adherence among patients with MG is definitely poor. The purpose of this study was to capture the prevalence and the associated factors of non-adherence to pharmacological treatment in patients with MG. We carried out a cross-sectional cohort study with 58 consecutive patients with MG from a university-affiliated referral hospital in São Paulo, Brazil. We registered clinical and sociodemographic data and patients were classified according to the MGFA classification. Clinical severity was assessed with myasthenia gravis composite (MGC) scale. Neuropsychiatric symptoms were evaluated with the Hospital Anxiety and Depression Scale (HADS) and quality of life with the 15-Item Quality Of Life Instrument for myasthenia gravis scale (MG-QOL15). Adherence to pharmacological treatment was evaluated using the 8-item Morisky Medication Adherence Scale (MMAS-8). There were 26 (44.8%) patients adherent to treatment. Low adherence was associated with poor educational attainment, longer time of disease and greater daily number of pills (p < 0.05). Patients with poor compliance to treatment presented worse quality of life and increased neuropsychiatric symptoms (p < 0.05). Adherence can be relatively challenging in patients with MG. Medical approach should recognize that therapeutic success in the treatment of MG goes through adherence to treatment.
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Quality of Life of Myasthenia Gravis Patients in Regard to Epidemiological and Clinical Characteristics of the Disease. Neurologist 2019; 24:115-120. [DOI: 10.1097/nrl.0000000000000238] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Liu Y, Tang X. Depressive Syndromes in Autoimmune Disorders of the Nervous System: Prevalence, Etiology, and Influence. Front Psychiatry 2018; 9:451. [PMID: 30319458 PMCID: PMC6168717 DOI: 10.3389/fpsyt.2018.00451] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Accepted: 08/30/2018] [Indexed: 12/20/2022] Open
Abstract
Autoimmune diseases of the nervous system (ADNS) consist of a group of severely disabling disorders characterized by abnormal immune attack against protein components of the nervous system. This type of attack behavior may occur in the central or peripheral nervous system, and in the neuromuscular junction, resulting in neuronal damage, axonal injury, demyelination or destruction of the neuromuscular junction. While the neurological deficits of patients with ADNS have received significant research attention, the manifestation of depression tends to be ignored. In fact, depressive manifestation is common in ADNS and adds significant burden upon patients suffering from this disease. Here, we systematically reviewed the current literature to highlight the prevalence, etiology and influence of depressive manifestation in ADNS. Most autoimmune diseases of the nervous system are discussed in this paper, from multiple sclerosis, acute disseminated encephalomyelitis and autoimmune encephalitis to acute myelitis, neuromyelitis optica, Guillain-Barré syndrome and myasthenia gravis. Depressive symptoms usually develop as a comorbidity during the course of disease, but sometimes exist as a primary presentation of the disease. Psychosocial factors, long periods of disablement and chronic pain are the three most common causes of depressive symptoms in many chronic conditions, particularly in peripheral neuropathy. Furthermore, the higher prevalence of depressive symptoms in ADNS suggests that immunological dysregulation may contribute to the elevated morbidity of depression. Finally, structural lesions of the brain, and some medications for ADNS, are also thought to precipitate depressive states in ADNS.
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Affiliation(s)
| | - Xiangqi Tang
- Department of Neurology, The Second Xiangya Hospital, Central South University, Changsha, China
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Braz NFT, Rocha NP, Vieira ÉLM, Barbosa IG, Gomez RS, Kakehasi AM, Teixeira AL. Muscle strength and psychiatric symptoms influence health-related quality of life in patients with myasthenia gravis. J Clin Neurosci 2018; 50:41-44. [PMID: 29396072 DOI: 10.1016/j.jocn.2018.01.011] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Accepted: 01/05/2018] [Indexed: 12/14/2022]
Abstract
Myasthenia gravis (MG) is a neuromuscular autoimmune disease characterized by skeletal muscle weakness which can impact motor function and, furthermore, produce negative impact on the health-related quality of life (HRQOL). OBJECTIVE To evaluate the predictors for HRQOL in patients with MG. METHODS Eighty patients were evaluated with the MG Foundation of America classification and the MG Composite scale. HRQOL was estimated by the MGQOL15, while anxious and depressive symptoms were evaluated with the Hospital Anxiety and Depression Scale (HAD). RESULTS The mean age of patients was 41.9 years with mean illness duration of 13.5 years. Almost half of the patients (43.75%) had significant anxiety and more than a quarter (27.50%) had depressive symptoms. Factors that influenced the HRQOL in MG were skeletal muscle weakness and anxiety and depressive symptoms (p < .001 in logistic regression model). CONCLUSION Anxiety and depressive symptoms, besides motor symptoms, influence HRQOL in MG. Mental health must be a clinical focus in addition to the treatment of somatic symptoms during the course of MG.
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Affiliation(s)
- Nayara Felicidade Tomaz Braz
- Neuroscience Branch, Interdisciplinary Laboratory of Medical Investigation, School of Medicine, UFMG, Belo Horizonte, Brazil.
| | - Natalia Pessoa Rocha
- Neuroscience Branch, Interdisciplinary Laboratory of Medical Investigation, School of Medicine, UFMG, Belo Horizonte, Brazil
| | - Érica Leandro Marciano Vieira
- Neuroscience Branch, Interdisciplinary Laboratory of Medical Investigation, School of Medicine, UFMG, Belo Horizonte, Brazil
| | - Izabela Guimarães Barbosa
- Neuroscience Branch, Interdisciplinary Laboratory of Medical Investigation, School of Medicine, UFMG, Belo Horizonte, Brazil
| | | | | | - Antonio Lucio Teixeira
- Neuroscience Branch, Interdisciplinary Laboratory of Medical Investigation, School of Medicine, UFMG, Belo Horizonte, Brazil; Neuromuscular Disease Center, University Hospital, UFMG, Belo Horizonte, Brazil
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