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Outcome from respiratory failure

S M Weiss1, L D Hudson

  • 1Division of Pulmonary and Critical Care Medicine, University of Washington, Seattle.

Critical Care Clinics
|January 1, 1994
PubMed
Summary
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Prognosis for acute respiratory failure (ARF) depends on underlying conditions and severity. Factors like COPD, ARDS, sepsis, and malignancy significantly impact patient survival and long-term outcomes.

Area of Science:

  • Pulmonology
  • Critical Care Medicine

Background:

  • Assessing the prognosis of acute respiratory failure (ARF) requires integrating population survival data with individual patient factors.
  • Mortality in ARF is multifactorial, influenced by the specific condition, precipitating causes, and patient's baseline health.

Purpose of the Study:

  • To analyze factors influencing mortality and long-term prognosis in patients experiencing acute respiratory failure.
  • To compare outcomes between different causes of ARF, including COPD exacerbations and acute respiratory distress syndrome (ARDS).

Main Methods:

  • Review of survival data from large studies on ARF.
  • Analysis of factors contributing to mortality in ARF complicating Chronic Obstructive Pulmonary Disease (COPD).
  • Examination of mortality and pulmonary function outcomes in survivors of Acute Respiratory Distress Syndrome (ARDS).

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Main Results:

  • Mechanical ventilation is required in a minority of ARF cases complicating COPD; mortality in these cases relates to the precipitating illness and COPD severity.
  • Long-term prognosis for COPD patients surviving ARF is primarily determined by the severity of their underlying COPD.
  • Acute mortality is higher in ARDS patients compared to those with ARF complicating COPD, with sepsis and organ failure being common causes of death in ARDS.
  • Pulmonary function in ARDS survivors is variable and may correlate with the initial severity of the acute episode.
  • ARF associated with conditions like hematologic malignancy carries a particularly poor prognosis.

Conclusions:

  • Prognosis in ARF is highly variable and depends on the underlying cause, severity, and patient-specific factors.
  • While COPD exacerbations have a variable prognosis, ARDS presents a higher acute mortality risk, often linked to sepsis and multi-organ failure.
  • The presence of comorbidities like hematologic malignancy significantly worsens the outlook for patients with ARF.