Checklist: The rule of 20 Feb 06, 2013 By Rebecca Kirby, DVM, DACVIM, DACVECC VETERINARY MEDICINE Click here to download a PDF of this checklist of 20 critical parameters to evaluate at least daily in critically ill animals. Related linksCold critters: Assessing, preventing, and treating hypothermiaHow to get the most out of your radiographs in emergency situationsVideo: Save a life! Perform thoracocentesis when you need to Hot topics on dvm360Pet Owner 2.0: A dvm360 Leadership Challenge Veterinary issues in 2016: Will this be the year of telemedicine? Top 8 nastiest things to clean at a veterinary practice The 12 days of veterinary client handouts Need a urine sample? Urine luck!