Can High Intensity Inspiratory Muscle Training Improve Inspiratory Muscle Strength and Accelerate Weaning in Medical Patients With Difficulty on Weaning?

NCT ID: NCT04347317

Last Updated: 2021-04-19

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

UNKNOWN

Clinical Phase

NA

Total Enrollment

40 participants

Study Classification

INTERVENTIONAL

Study Start Date

2021-06-01

Study Completion Date

2021-12-31

Brief Summary

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Introduction: It has been described that invasive mechanical ventilation leads to diaphragm weakness. The inspiratory muscle weakness is related with a difficult and prolonged weaning as well as longer duration of mechanical ventilation and increased risk of complications and death. Consequently, the duration of stay in ICU is longer and the costs in ICU increase.

Objectives: To determine the effects of a high intensity inspiratory muscle training (IMT) on inspiratory muscle strength, weaning outcomes, complications and length of stay in the ICU in medical patients with difficulty on weaning and admitted in the ICU.

Methodology: In a single blind randomized clinical trial, 40 tracheotomy ventilated medical patients in which spontaneous breathing trial has failed ≥ 1 time, will be selected and randomized into two equitable groups. In the intervention group, IMT will be performed at 60% of the maximum inspiratory pressure (which will increase by 10% every week) while in the control group it will be performed at 30%. In both groups, 5 sets of 6 breaths will be performed, once a day, 5 days a week, for a maximum of 28 days or until the patient is successfully weaned. The main outcome will be the maximum inspiratory pressure, while the maximum expiratory pressure, weaning duration process, weaning success, duration of mechanical ventilation, length of stay in the ICU, complications and the rapid shallow breathing index will be analyzed as secondary outcomes.

t-student test for independent samples will be used to analyze quantitative outcomes. For qualitative outcomes will be used X2 test. A value of p\<0.05 will be assumed as an indicator of statistically significant results.

Future contributions: Our collect results can be useful for the updating of the clinical practice guidelines and promote its implementation in the clinical practice.

Detailed Description

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Conditions

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Weaning Failure

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

SINGLE

Outcome Assessors

Study Groups

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Low Intensity IMT

Group Type ACTIVE_COMPARATOR

Low Intensity IMT

Intervention Type PROCEDURE

The control group will get a supervised IMT with Threshold IMT device, once a day, 5 days a week for a maximum of 28 days or until the participant is weaned successfully. In each session the participant will do 5 sets of 6 repetitions with 2 minutes of rest between sets. The initial training load will be adjusted to 30% of the MIP and will be increased by 10% of the initial MIP weekly.

The patient will be placed in a semi-incorporated position (head of the bed elevated 45º). The ICU physiotherapist will check before training that the cuff of the tracheal tube is correctly swollen to avoid air leaks during the training. The ICU physiotherapist will disconnect the mechanical ventilation during the IMT and will provide supplemental oxygen when required. However, between series the participant will be returned to ventilator support. Patients will be instructed to do a whole expiration and immediately inspire as forceful as possible until reaching the total lung capacity.

High Intensity IMT

Group Type EXPERIMENTAL

High Intensity IMT

Intervention Type PROCEDURE

The experimental group will get a supervised IMT with Threshold IMT device, once a day, 5 days a week for a maximum of 28 days or until the participant is weaned successfully. In each session the participant will do 5 sets of 6 repetitions with 2 minutes of rest between sets. The initial training load will be adjusted to 60% of the MIP and will be increased by 10% of the initial MIP weekly.

The patient will be placed in a semi-incorporated position (head of the bed elevated 45º). The ICU physiotherapist will check before training that the cuff of the tracheal tube is correctly swollen to avoid air leaks during the training. The ICU physiotherapist will disconnect the mechanical ventilation during the IMT and will provide supplemental oxygen when required. However, between series the participant will be returned to ventilator support. Patients will be instructed to do a whole expiration and immediately inspire as forceful as possible until reaching the total lung capacity.

Interventions

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Low Intensity IMT

The control group will get a supervised IMT with Threshold IMT device, once a day, 5 days a week for a maximum of 28 days or until the participant is weaned successfully. In each session the participant will do 5 sets of 6 repetitions with 2 minutes of rest between sets. The initial training load will be adjusted to 30% of the MIP and will be increased by 10% of the initial MIP weekly.

The patient will be placed in a semi-incorporated position (head of the bed elevated 45º). The ICU physiotherapist will check before training that the cuff of the tracheal tube is correctly swollen to avoid air leaks during the training. The ICU physiotherapist will disconnect the mechanical ventilation during the IMT and will provide supplemental oxygen when required. However, between series the participant will be returned to ventilator support. Patients will be instructed to do a whole expiration and immediately inspire as forceful as possible until reaching the total lung capacity.

Intervention Type PROCEDURE

High Intensity IMT

The experimental group will get a supervised IMT with Threshold IMT device, once a day, 5 days a week for a maximum of 28 days or until the participant is weaned successfully. In each session the participant will do 5 sets of 6 repetitions with 2 minutes of rest between sets. The initial training load will be adjusted to 60% of the MIP and will be increased by 10% of the initial MIP weekly.

The patient will be placed in a semi-incorporated position (head of the bed elevated 45º). The ICU physiotherapist will check before training that the cuff of the tracheal tube is correctly swollen to avoid air leaks during the training. The ICU physiotherapist will disconnect the mechanical ventilation during the IMT and will provide supplemental oxygen when required. However, between series the participant will be returned to ventilator support. Patients will be instructed to do a whole expiration and immediately inspire as forceful as possible until reaching the total lung capacity.

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

* Medical patients aged ≥ 18 years hospitalized in the ICU.
* Patients ventilated by tracheostomy and who have failed ≥ 1 spontaneous breathing test.
* Being ventilated in assisted-controlled, assisted or pressure support modes.
* PEEP ≤ 10 cmH2O
* Richmond Agitation-Sedation Scale between -1 and 0.
* Confusion Assessment Method for the Intensive Care Unit negative.
* Cardiorespiratory and hemodynamic stability in the absence of vasopressor support or with minimal requirement (dobutamine or dopamine ≤ 5 μg / kg / min, phenylephrine ≤ 1 μg / kg / min).
* FiO2 ≤ 0,6
* PaO2/FiO2 ratio \> 200
* Blood lactate levels \< 4 mmol/L

Exclusion Criteria

* Progressive neuromuscular disease
* Thoraco-abdominal surgery in a period \<30 days from the beginning of the study.
* Diseases that cause hemodynamic instability (cardiac arrhythmia, decompensated heart failure, unstable ischemic heart disease).
* Hemoptysis
* Unstable chest wall.
* Not drained pneumothorax
* Phrenic nerve injury
* Spinal cord injury above T8
* Clinical signs of respiratory distress (paradoxal breathing, use of accessory respiratory muscles)
* Body mass index \> 40 kg / m2
* Use domiciliary ventilator support prior to hospitalization.
* Skeletal disorder of the rib cage that impairs its biomechanics (severe kyphoscoliosis, congenital deformities).
* Body temperature \> 38ºC
* Pregnancy
* Receive therapy with nitric oxide or nebulized prostacyclin.
* Medical order.
Minimum Eligible Age

18 Years

Maximum Eligible Age

99 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Hospital Universitari Vall d'Hebron Research Institute

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Bernat Planas Pascual, PT,MSc

Role: PRINCIPAL_INVESTIGATOR

Hospital Universitari Vall d'Hebron Research Institute

Locations

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Hospital Universitari Vall d'Hebron Research Institute

Barcelona, , Spain

Site Status

Hospital Universitari Vall d'Hebron

Barcelona, , Spain

Site Status

Countries

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Spain

Central Contacts

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Esther Batlle Borraz, PT

Role: CONTACT

+34697964618

Bernat Planas Pascual, PT,MSc

Role: CONTACT

+34934892465

Facility Contacts

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Bernat Planas Pascual, PT, MSc

Role: primary

+34934892465

Esther Batlle Borraz, PT

Role: backup

+34697964618

Bernat Planas Pascual, MSc

Role: primary

References

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Other Identifiers

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PR(ATR)03/2020

Identifier Type: -

Identifier Source: org_study_id

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