Predicting Death in Patients with Acute Lung Injury on Mechanical Ventilation
Author Information
Author(s): Eric J Seeley, Daniel F McAuley, Mark Eisner, Michael Miletin, Han Jing Zhuo, Michael A Matthay, Richard H Kallet
Primary Institution: University of California, San Francisco
Hypothesis
Can changes in pulmonary physiologic variables predict mortality in patients with acute lung injury during mechanical ventilation?
Conclusion
Decreased respiratory system compliance on day 6 of mechanical ventilation is associated with increased mortality in patients with acute lung injury.
Supporting Evidence
- The overall mortality in the study cohort was 35%.
- A decrease in respiratory system compliance between days 1 and 6 was independently associated with mortality.
- The study included patients from two medical centers in the US.
Takeaway
If a patient's lungs are not working well after 6 days on a breathing machine, they might be more likely to not survive.
Methodology
This was a prospective cohort study analyzing pulmonary physiologic variables in patients with acute lung injury who were mechanically ventilated for more than 6 days.
Potential Biases
Post-hoc selection of patients could lead to selection bias.
Limitations
The small sample size may limit the ability to detect statistical differences, and the study was conducted at specific hospitals, which may affect generalizability.
Participant Demographics
Patients were adults aged 18 and older with acute lung injury, including a significant number with immunosuppression and cirrhosis.
Statistical Information
P-Value
p < 0.01
Confidence Interval
95% CI: 26%-46%
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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