Related Experiment Videos
Pulmonary microthrombosis in severe adult respiratory distress syndrome
Abstract:
Pulmonary microvascular occlusive disease has been investigated using balloon occlusive pulmonary angiography in 31 patients with severe adult respiratory distress syndrome (ARDS) of different origins (14 patients with pneumonia, nine with multiple injury, eight with sepsis). Multiple pulmonary artery filling defects (PAFD) were detected in 13 (42%) patients, with a seven (78%) in nine incidence among those with posttraumatic ARDS. The presence of PAFD did not correlate with the severity of the respiratory failure, with the pulmonary hemodynamic alterations (pulmonary hypertension and increased vascular resistance), or with the final outcome (mortality rate was 54% among patients with PAFD and 61% among those with normal angiograms). These findings suggest that widespread pulmonary microthrombosis is a common event in patients with polytrauma and respiratory failure, with an important pathophysiologic role in the onset of posttraumatic ARDS.
Insights
Pulmonary microvascular occlusive disease is common in severe adult respiratory distress syndrome (ARDS). Widespread pulmonary microthrombosis is a key factor in posttraumatic ARDS, regardless of respiratory failure severity or patient outcomes.
Area of Science:
- Pulmonary Medicine
- Critical Care Medicine
- Vascular Medicine
Background:
- Pulmonary microvascular occlusive disease is a critical complication in severe adult respiratory distress syndrome (ARDS).
- Understanding the role of microthrombosis in ARDS, particularly posttraumatic ARDS, is essential for improving patient management.
Purpose of the Study:
- To investigate pulmonary microvascular occlusive disease in patients with severe ARDS using balloon occlusive pulmonary angiography.
- To determine the incidence and significance of pulmonary artery filling defects (PAFD) in ARDS patients of various origins.
Main Methods:
- Balloon occlusive pulmonary angiography was performed on 31 patients with severe ARDS.
- Patients had diverse origins, including pneumonia, multiple injury, and sepsis.
Main Results:
- Pulmonary artery filling defects (PAFD), indicative of microthrombosis, were found in 42% of ARDS patients.
- The incidence of PAFD was higher (78%) in patients with posttraumatic ARDS.
- PAFD presence did not correlate with respiratory failure severity, hemodynamic alterations, or mortality.
Conclusions:
- Widespread pulmonary microthrombosis is a frequent occurrence in patients with polytrauma and respiratory failure.
- Pulmonary microthrombosis likely plays a significant pathophysiologic role in the development of posttraumatic ARDS.
- Further research into microthrombosis management in ARDS is warranted.