Continuous Positive Airway Pressure and Oxygen Concentration on Measurement of Rapid Shallow Breathing Index

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

COMPLETED

Total Enrollment

98 participants

Study Classification

OBSERVATIONAL

Study Start Date

2004-10-31

Study Completion Date

2005-08-31

Brief Summary

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To compare the rapid shallow breathing index (RSBI) values, the incidence of adverse reactions, and the predictive accuracy measured under 5 different ventilator strategies in the same patient group.

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Detailed Description

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98 ready for weaning patients were included and divided into success (n=71) and failure (n=27) groups based upon their weaning outcome. Before weaning, the RSBI values were determined under the patients disconnecting from the ventilator (RA-no ventilator) and still connecting to the ventilator with 4 different settings (fraction of inspired oxygen (FiO2) 21 or 40% combined with continuous positive airway pressure (CPAP) 0 or 5 cm H2O). The patients were extubated after completing the weaning trials. Successful weaning was defined as patients free from the ventilator for over 48 hours.

Conditions

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Acute Respiratory Failure

Study Design

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Study Time Perspective

PROSPECTIVE

Study Groups

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S, 1, A

group (success or failure), case number, measurement method

No interventions assigned to this group

Eligibility Criteria

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Inclusion Criteria

* intubated medical patients with mechanically ventilated more than 48 hours
* clinically ready for weaning
* Glasgow coma scales were at least 8
* their ventilator settings were: assist-controlled, pressure support (PS)or synchronized intermittent mandatory ventilation plus PS mode, FiO2 40% or less, positive end-expiratory pressure 5 cm H2O or less, and sensitivity setting on 1 L/min. Their arterial blood gases results were acceptable