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Management of cardiac involvement in muscular dystrophies: paediatric versus adult forms.

ABSTRACT: Muscular dystrophies are a group of genetic disorders characterized by muscle degeneration and consequent substitution by fat and fibrous tissue. Cardiac involvement is an almost constant feature in a great part of these diseases, as both primary myocardial involvement and secondary involvement due to respiratory insufficiency, pulmonary hypertension or reduced mobility. Primary myocardial involvement usually begins more precociously compared to the secondary involvement. In fact the first signs of cardiomyopathy can be observed in the first decade of life in muscular dystrophies with childhood onset and later in adult form of muscular dystrophies as myotonic dystrophy type 1. At least an annual cardiac follow-up is recommended in these patients including clinical and instrumental examination (ECG, 24h Holter monitoring, ECHO), to detect cardiac involvement. A more frequent monitoring may be required according to the type of cardiomyopathy and the patient's needs. In this short review practical guide-lines are shown for physicians routinely involved in the management of these patients.

SUBMITTER: Palladino A

PROVIDER: S-EPMC5416740 | biostudies-literature | 2016 Dec

REPOSITORIES: biostudies-literature

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Management of cardiac involvement in muscular dystrophies: paediatric versus adult forms.

Palladino Alberto A D'Ambrosio Paola P Papa Andrea Antonio AA Petillo Roberta R Orsini Chiara C Scutifero Marianna M Nigro Gerardo G Politano Luisa L

Acta myologica : myopathies and cardiomyopathies : official journal of the Mediterranean Society of Myology 20161201 3

Muscular dystrophies are a group of genetic disorders characterized by muscle degeneration and consequent substitution by fat and fibrous tissue. Cardiac involvement is an almost constant feature in a great part of these diseases, as both primary myocardial involvement and secondary involvement due to respiratory insufficiency, pulmonary hypertension or reduced mobility. Primary myocardial involvement usually begins more precociously compared to the secondary involvement. In fact the first signs ...[more]

PMID: 28484313

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Project description:BACKGROUND:Type 2C and 2D limb girdle muscular dystrophies (LGMD) are a group of autosomal recessive limb girdle muscular dystrophies manifested by proximal myopathy, impaired respiratory muscle function and cardiomyopathy. The correlation and the prognostic impact of respiratory and heart impairment are poorly described. We aimed to describe the long-term cardiac and respiratory follow-up of these patients and to determine predictive factors of cardio-respiratory events and mortality in LGMD 2C and 2D. METHODS:We reviewed the charts of 34 LGMD patients, followed from 2005 to 2015, to obtain echocardiographic, respiratory function and sleep recording data. We considered respiratory events (acute respiratory failure, pulmonary sepsis, atelectasis or pneumothorax), cardiac events (acute heart failure, significant cardiac arrhythmia or conduction block, ischemic stroke) and mortality as outcomes of interest for the present analysis. RESULTS:A total of 21 patients had type 2C LGMD and 13 patients had type 2D. Median age was 30 years [IQR 24-38]. At baseline, median pulmonary vital capacity (VC) was 31% of predicted value [20-40]. Median maximal inspiratory pressure (MIP) was 31 cmH2O [IQR 20.25-39.75]. Median maximal expiratory pressure (MEP) was 30 cm H2O [20-36]. Median left ventricular ejection fraction (LVEF) was 55% [45-64] with 38% of patients with LVEF <50%. Over a median follow-up of 6 years, we observed 38% respiratory events, 14% cardiac events and 20% mortality. Among baseline characteristics, LVEF and left ventricular end diastolic diameter (LVEDD) were associated with mortality, whilst respiratory parameters (VC, MIP, MEP) and the need for home mechanical ventilation (HMV) were associated with respiratory events. CONCLUSION:In our cohort of severely respiratory impaired type 2C and 2D LGMD, respiratory morbidity was high. Cardiac dysfunction was frequent in particular in LGMD 2C and had an impact on long-term mortality. TRIAL REGISTRATION:ClinicalTrials.gov NCT02501083.

Dataset Information

Management of cardiac involvement in muscular dystrophies: paediatric versus adult forms.

Publications

Management of cardiac involvement in muscular dystrophies: paediatric versus adult forms.

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