About this trial
This study will be conducted to compare the effectiveness of progressive inspiratory flow trigger sensitivity rising versus stepwise pressure support reduction as ventilator-based inspiratory muscle training methods on weaning and extubation success in mechanically ventilated patients with respiratory failure.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Acute respiratory failure patients in the ICU are receiving MV for 48 h or more in a controlled mode.
Their ages will range from 40 to 55 years old, and both sexes will be included.
Conscious and oriented patients with a Glasgow coma score ≥13 (≥9T).
Alertness score with a Richmond Agitation-Sedation Scale (RASS) will be from 0 to -1.
Disqualifiers
Persistent hemodynamic instability as life-threatening conditions or comorbidities interfere with and compromise weaning, like cardiac arrhythmia, pericardial effusion, congestive heart failure, or acute coronary syndrome.
Severe breathlessness when spontaneously breathing.
Any progressive neuromuscular disease, such as myopathy or neuropathy, that would interfere with responding to inspiratory muscle training due to inadequate training performance of the inspiratory muscle.
Spinal cord injury.
Trial design
Parallel
Treatments tested in this trial
adjustment of parameters on mechanical ventilation device
Other interventionadjust the parameters of the mode of training on mechanical ventilation according the group of patients
routine plan of weaning and Conventional Chest Physiotherapy
Other interventionChest Physiotherapy including: ▪ Postural Drainage ▪ Manual techniques for airway clearance (percussion, vibration, shaking) Adding to range of passive to active movements of the limbs
Treatment groups
Trial outcomes
Primary outcomes
Spontaneous breathing trial (SBT)
documenting the frequency (total number) of spontaneous breathing trials for each patient until successful extubation
Burn's Wean Assessment Score
Calculate the percentage of the total score to indicate the extent of improvement and the probable readiness for weaning (in %). The 26-item checklist assigns 1 point for "yes" responses, with a total score up to 26. Scores below 17 (65%) suggest insufficient readiness for weaning, while scores ≥ 17 indicate probable readiness for weaning.
Duration of MV
defined as the time from study randomization to successful unassisted breathing (in days)
weaning success rate
absence of ventilatory support 48 hours after discontinuation of MV. Inability to tolerate or pass SBT or to be liberated from invasive ventilatory support indicates weaning failure (in %).
Secondary outcomes
Blood Gas analysis
Measure the results of the arterial blood gas analysis before beginning the intervention and follow up on its progression through the study and get the final results once weaning occurs. Lower PaCO₂ during MV is independently associated with successful weaning, while higher levels are linked to weaning failure
Negative Inspiratory Force
Negative inspiratory force (cmH₂O) will be measured via the mechanical ventilator as an index of global inspiratory muscle strength, consistent with ATS/ERS recommendations for weaning assessment.
Respiratory Rate
Respiratory rate (breaths/min) will be measured from the mechanical ventilator as an indicator of respiratory load and breathing pattern
Minute Ventilation
Minute ventilation (L/min) will be measured from the mechanical ventilator.
Locations
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Sponsors and contacts
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