- Poster presentation
- Open Access
Correlation of lung comet score with decreased gas exchange in patients with acute pulmonary edema: a pilot study
© BioMed Central Ltd. 2010
- Published: 1 March 2010
- Lung Disease
- Strong Negative Correlation
- Decompensated Heart Failure
- Acute Decompensated Heart Failure
- Pulmonary Congestion
The aim of this study was to determine the correlation between B+ line score and blood gas analysis (BGA) parameters in patients with acute cardiogenic pulmonary edema (ACPE). The presence of B+ line artifacts on lung US is correlated with increased extravascular lung water. In patients with acute decompensated heart failure the resolution of B+ lines can be used to monitor resolution of pulmonary congestion. A simple nine-point comet score has been proposed to quantify B+ lines and monitor ACPE treatment .
Twenty-one patients with ACPE were submitted to lung US and BGA on presentation at 2 and 24 hours after admission. Lung US was done in nine thoracic areas and scored one point if B+ lines were present. A score of 10 was given for the presence of multiple coalesced comets in all fields (white lung). BGA values were used to calculate PO2/FiO2 (P/F) and A-a gradient.
There is a strong negative correlation between lung comet score and gas exchange in patients with ACPE. In these patients, serial thoracic US may reduce the need for repeated invasive BGA monitoring and further help tailor therapy.