Prolong mechanical ventilation cause to respiratory muscle weakness and high risk to weaning failure,the investigators hypothesize that 1. Specific inspiratory muscle training (SIMT) using threshold loaded breathing device (BreatheMAX V.1)in patients with ventilator dependence will improve inspiratory muscle strength 2. SIMT will improve lung function in patients with ventilatory dependence. 3. SIMT will improve weaning success in patients with ventilatory dependence.
Prolonged mechanical ventilation cause detrimental effects on lung function and high risk of lung complications and standard weaning protocols are not successful in a number of patients. The strength of the inspiratory muscles is important factors in the success of weaning. Although, the inspiratory muscles are trained by manipulating the ventilator sensitivity and made of ventilation in the traditional protocol, the muscle function might not improved sufficiently to sustain independent and spontaneous breathing. Consequently, specific inspiratory muscle training is indicated and has been studied in patient with weaning failure. However, there is little evidence available and no firm conclusion can be drown. Therefore, the purpose of this study is to determine whether specific IMT training using the local made loaded threshold IMT device can improve lung function and accelerate the weaning process.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
TREATMENT
Masking
SINGLE
Enrollment
20
inspiratory muscle training at 50% of peak negative inspiratory muscle training (PNIP)will be performed with 6 breathe/set, 10 set/day, once a day for 28 days.
Respiratory Intensive Care Unit (RICU),Srinagarind Hospital
Khon Kaen, Changwat Khon Kaen, Thailand
Peak Negative Inspiratory Pressure (PNIP)
Time frame: every 7 day for 28 days
Lung compliance
Time frame: every 7 day for 28 days
Vital capacity
Time frame: every 7 day for 28 days
Rate perceived breathlessness
Time frame: every 7 day for 28 day
Airway resistance
Time frame: every 7 day for 28 days.
Tidal volume
Time frame: every 7 day for 28 days.
Minute ventilation
Time frame: every 7 day for 28 days.
End tidal carbondioxide (PetCO2)
Time frame: every 7 day for 28 days.
SpO2
Time frame: every 7 day for 28 days.
Heart rate
Time frame: every 7 day for 28 days.
Respiratory rate
Time frame: every 7 day for 28 days.
Weaning success
Time frame: every 7 day for 28 days.
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