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Patient responses during rapid terminal weaning from mechanical ventilation: a prospective study
M L Campbell1, K S Bizek, M Thill
1Detroit Receiving Hospital, MI, USA.
Critical Care Medicine
|February 6, 1999
Summary
Rapid terminal weaning from mechanical ventilation can keep patients comfortable, even those with altered consciousness. Low-dose morphine and benzodiazepines, along with subjective comfort scales, are effective during this process.
Area of Science:
- Critical Care Medicine
- Respiratory Therapy
- Neuroscience
Background:
- Mechanical ventilation is a life support measure for critically ill patients.
- Terminal weaning is the process of withdrawing mechanical ventilation.
- Patient comfort during terminal weaning is a significant clinical concern.
Purpose of the Study:
- To describe and analyze patient responses during rapid terminal weaning from mechanical ventilation.
- To evaluate the effectiveness of low-dose analgesia and sedation in maintaining patient comfort.
- To correlate subjective comfort measures with objective physiological and neurological data.
Main Methods:
- Prospective, descriptive, correlational study design.
- Inclusion of 31 adult patients undergoing rapid terminal weaning.
- Collection of physiological (SpO2, ETCO2, HR, RR) and comfort (EEG, Bizek, COMFORT scales) measures.
Main Results:
- Respiratory rate and oxygen saturation changed significantly during weaning.
- No significant changes in end-tidal CO2 were observed.
- Patients, including those with altered consciousness, remained comfortable with low-dose analgesia/sedation.
- Subjective comfort scores strongly correlated with electroencephalogram bispectral analysis.
Conclusions:
- Rapid terminal weaning can be performed comfortably in patients with altered consciousness or coma.
- Low doses of morphine and benzodiazepines are effective for comfort management.
- Subjective comfort scales provide reliable evaluation during terminal weaning.