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Figure 3 | Critical Care

Figure 3

From: Effect of positive end-expiratory pressure and tidal volume on lung injury induced by alveolar instability

Figure 3

Number of alveoli per microscopic field and alveolar stability over time. In the phase II protocol alveolar microatelectasis and alveolar stability were evaluated. (a) Alveolar microatelectasis was measured by counting the number of alveoli per in vivo microscopic field; (b) alveolar stability was measured as the percentage change in alveolar area from inspiration to expiration (I-E%). Measurements were made before endotracheal instillation of Tween (Baseline), after endotracheal instillation of Tween (Post-Tween), and every 30 min thereafter for 180 minutes. PEEP, positive end-expiratory pressure; Vt, tidal volume.

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Critical Care

ISSN: 1364-8535