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Evaluation of a Mechanical Device During Acute Respiratory Failure in Patients With Neuromuscular Disorders

2014-07-24 14:14:24 | BioPortfolio

Summary

The hypothesis is that a mechanical insufflation-exsufflation (MI-E) is associated with a decrease in the number of intubations and more rapid clinical improvement in children and adults with neuromuscular disease who are admitted for an acute respiratory exacerbation.In this prospective, randomised, multicenter study, 55 patients will be treated with standard treatment and a MI-E, and 55 patients with standard treatment and standard respiratory physiotherapy. The primary objective is the reduction of the number of patients requiring invasive ventilatory support (endotracheal intubation or tracheotomy) in the group treated with MI-E (MI-E group). The main secondary objectives are a reduction in hospital stay and an improvement in clinical condition, dyspnea and respiratory muscle function.

Description

Justification Respiratory muscle weakness reduces the efficacy of the cough reflex in patients with neuromuscular disorders and exposes them to the risk of acute respiratory failure. Mechanical insufflation-exsufflation devices assist cough and have been shown to be efficient in increasing the cough expiratory flow in children and adults with neuromuscular disease and decreasing the risk of intubation in a limited population of hospitalized adults with acute respiratory failure.

Primary objective The goal is to record the efficacy of mechanical insufflation-exsufflation (MI-E) during acute respiratory failure in patients with neuromuscular disorders.The primary objective is the reduction of the number of patients requiring invasive ventilatory support (endotracheal intubation or tracheotomy) in the group treated with MI-E (MI-E group) compared to the group treated with traditional chest physiotherapy without MI-E (Control group).

Secondary objectives

In the MI-E group, compared to the Control group:

1. Decrease in the length of hospitalization in the intensive care unit (ICU)

2. Decrease in the total length of hospitalization

3. Decrease in the incidence of bronchoscopy-assisted aspiration

4. Decrease in the duration of oxygen therapy

5. Decrease in the daily length of noninvasive positive pressure ventilation (NPPV)

6. Improvement in blood gases on room air during hospitalization

7. Improvement of the peak cough flow (PCF)

8. Improvement of the vital capacity (VC), maximal inspiratory (PImax) and expiratory (PEmax) pressures, sniff nasal inspiratory pressure (SNIP), peak expiratory flow (PEF) and dyspnea during hospitalization.

9. Decrease in the number of secondary tracheotomies (for weaning of ventilatory support)

Type of study Prospective, randomized, controlled, multicenter study

Number of subjects The calculation of the number of subjects is based on two retrospective studies. In the study by VIANELLO, which included 11 adults hospitalized in the ICU for respiratory failure, the number of therapeutic failures, defined as the need for a "mini" tracheotomy or intubation, was significantly less in the group using MI-E than in a group of 16 historical control patients [2 failures in the MI-E group (18%) versus 10 failures in the control group (63%), p<0.05] (1). Another study reported 19 successes (80%) versus 5 failures on MI-E (2).

Study Design

Allocation: Randomized, Control: Active Control, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Treatment

Conditions

Neuromuscular Diseases

Intervention

mechanical insufflation - exsufflation, Standard respiratory physiotherapy

Location

Hospital Armand Trousseau, Pediatric Pulmonology Department and INSERM UMR S-893
Paris
France
75012

Status

Recruiting

Source

Assistance Publique - Hôpitaux de Paris

Results (where available)

View Results

Links

Published on BioPortfolio: 2014-07-24T14:14:24-0400

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Medical and Biotech [MESH] Definitions

Complete or severe weakness of the muscles of respiration. This condition may be associated with MOTOR NEURON DISEASES; PERIPHERAL NERVE DISEASES; NEUROMUSCULAR JUNCTION DISEASES; SPINAL CORD DISEASES; injury to the PHRENIC NERVE; and other disorders.

The administration of drugs by the respiratory route. It includes insufflation into the respiratory tract.

Signs and symptoms associated with diseases of the muscle, neuromuscular junction, or peripheral nerves.

The use of peripheral nerve stimulation to assess transmission at the NEUROMUSCULAR JUNCTION, especially in the response to anesthetics, such as the intensity of NEUROMUSCULAR BLOCKADE by NEUROMUSCULAR BLOCKING AGENTS.

Conditions characterized by impaired transmission of impulses at the NEUROMUSCULAR JUNCTION. This may result from disorders that affect receptor function, pre- or postsynaptic membrane function, or ACETYLCHOLINESTERASE activity. The majority of diseases in this category are associated with autoimmune, toxic, or inherited conditions.

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