1. Suki B, Alencar AM, Sujeer MK, et al. Life-support system benefits from noise. Nature. 1998;393:127−8.

2. Mutch WA, Harms S, Ruth Graham M, Kowalski SE, Girling LG, Lefevre GR. Biologically variable or naturally noisy mechanical ventilation recruits atelectatic lung. Am J Respir Crit Care Med. 2000;162:319−23.

3. Bellardine CL, Hoffman AM, Tsai L, et al. Comparison of variable and conventional ventilation in a sheep saline lavage lung injury model. Crit Care Med. 2006;34:439−45.

4. Gama de Abreu M, Spieth PM, Pelosi P, et al. Noisy pressure support ventilation: a pilot study on a new assisted ventilation mode in experimental lung injury. Crit Care Med. 2008;36:818−27.

5. Ma B, Suki B, Bates JH. Effects of recruitment/derecruitment dynamics on the efficacy of variable ventilation. J Appl Physiol (1985). 2011;110:1319−26.

6. Boker A, Haberman CJ, Girling L, et al. Variable ventilation improves perioperative lung function in patients undergoing abdominal aortic aneurysmectomy. Anesthesiology. 2004;100: 608−16.

7. Spieth PM, Guldner A, Huhle R, et al. Short-term effects of noisy € pressure support ventilation in patients with acute hypoxemic respiratory failure. Crit Care. 2013;17:R261.

8. Spieth PM, Guldner A, Huhle R, et al. Short-term effects of noisy € pressure support ventilation in patients with acute hypoxemic respiratory failure. Crit Care. 2013;17:R261.

9. Mutch WA, Graham MR, Girling LG, Brewster JF. Fractal ventilation enhances respiratory sinus arrhythmia. Respir Res. 2005;6:41.

10. Graham MR, Gulati H, Kha L, Girling LG, Goertzen A, Mutch WA. Resolution of pulmonary edema with variable mechanical ventilation in a porcine model of acute lung injury. Can J Anaesth. 2011;58:740−50.