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Utility of alveolar 'dead space' in the risk stratification of pulmonary embolism in patients who present to the emergency room with acute dyspnea
Critical Care volume 9, Article number: P86 (2005)
Previous studies have suggested that normal results of D-dimer and alveolar dead space are highly predictive tools to determine pulmonary embolism in patients with acute dyspnea.
To assess the utility of a protocol to monitor the alveolar dead space fraction associated with D-dimer in the prediction of pulmonary embolism in patients with acute dyspnea.
A prospective study where a protocol was used to assess alveolar dead space and D-dimer in Q patients who presented to the emergency department with dyspnea. The enrollment was performed from September through October 2003.
Seven (77.7%) patients were female and the mean age was 77.1 ± 13 years. Nine (100%) patients underwent Doppler ultrasonography of the venous lower extremities; four (44.4%) underwent CT scan of the thorax, three (33.3%) had high dead space alveolar fraction; six (66.6%) had a high D-dimer, and three (33.3%) had an ultimate diagnostic of pulmonary embolism.
A normal alveolar fraction of dead space and normal D-dimer were associated with low prevalence of pulmonary embolism in patients admitted to the emergency department with acute dyspnea.
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de Andrade, K., Pinheiro, A., Muiño, F. et al. Utility of alveolar 'dead space' in the risk stratification of pulmonary embolism in patients who present to the emergency room with acute dyspnea. Crit Care 9 (Suppl 2), P86 (2005). https://doi.org/10.1186/cc3630
- Public Health
- Emergency Department
- Pulmonary Embolism
- Lower Extremity
- Emergency Medicine