Table 3

Correlation between lung aeration and indicators of right ventricular afterload

Correlation coefficient

Good aeration (-1000 HU to -600 HU)

Poor aeration (-600 HU to -200 HU)

Nonaeration (-200 HU to +200 HU)


Pulmonary vascular resistance

0.7

-0.1

-0.7

Cardiac output

-0.2

-0.2

-0.2

Mean pulmonary artery pressure–pulmonary capillary wedge pressurea

0.2

-0.1

-0.7


HU, Houndsfield units, expressed as the percentage of the lung area. None of the correlations was significant. aPressure drop through the pulmonary circulation.

Reis Miranda et al. Critical Care 2006 10:R86   doi:10.1186/cc4944

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