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Figure 1 | Critical Care

Figure 1

From: Early fluid loading in acute respiratory distress syndrome with septic shock deteriorates lung aeration without impairing arterial oxygenation: a lung ultrasound observational study

Figure 1

Regional distribution of pulmonary aeration in 32 patients with septic shock and acute respiratory distress syndrome. (A) Right (R, gray bars) and left (L, gray bars) lungs at baseline and 40 minutes after fluid loading (red bars). As shown in (B) and (C), in each patient, six regions of interest were examined on each side, delineated by parasternal line (PSL), anterior axillary line (AAL), posterior axillary line (PAL) and paravertebral line (PVL): 1 = anterior and superior lung region; 2 = anterior and inferior lung region; 3 = lateral and superior lung; 4 = lateral and inferior lung region; 5 = posterior and superior lung region (the acoustic window is located in intercostal spaces between the scapula and vertebrae); 6 = posterior and inferior lung region. Each region of interest is characterized by the worst ultrasound pattern detected allowing the calculation of a regional ultrasound score: Normal = 0, interstitial edema (spaced B1 lines) = 1, interstitial-alveolar edema (coalescent B2 lines) = 2, lung consolidation = 3. The lung ultrasound score (LUS) is calculated as the sum of each individual score, ranging between 0 and 36 [27]. On the Y axis, the mean score per region of interest is indicated ± SD.

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Critical Care

ISSN: 1364-8535