Third law of high-frequency ventilation Third law of high-frequency ventilation. HFJV, high-frequency jet ventilation; HFOV, high-frequency oscillatory ventilation; HFV, high-frequency ventilation; PEEP, positive end-expiratory pressure; PIP, positive inspiratory pressure. Source: Lungs, Neonatology: Clinical Practice and Procedures Citation: Stevenson DK, Cohen RS, Sunshine P. Neonatology: Clinical Practice and Procedures; 2015 Available at: http://accesspediatrics.mhmedical.com/DownloadImage.aspx?image=/data/books/1462/ste_ch87_f003.png&sec=85596454&BookID=1462&ChapterSecID=82246423&imagename= Accessed: October 21, 2017 Copyright © 2017 McGraw-Hill Education. All rights reserved