Figure 1From: Severe bronchopulmonary dysplasia improved by noninvasive positive pressure ventilation: a case report Decrease in FiO 2 requirement over seven weeks of nocturnal NIPPV. Open rectangles and blue lines: oxygen concentrations (maximum and minimum for each day) delivered via nasal cannula during daytime; full rectangles and green lines: oxygen concentrations for nocturnal NIPPV. Oxygen saturation target was set at ≥ 90%.Back to article page