Describir: Critical care extra. Troubleshooting ICP lines... excerpted with permission of Lippincott-Raven Publishers from Handbook of Critical Care Nursing: A Holistic Approach, by Carolyn M. Hudak, PhD, RN, and Barbara M. Gallo, MS, RN, CNAA, Copyright 1994 by J.B. Lippincott Company, Philadelphia.