External Ventricular Drain (EVD) Troubleshooting for Neurosurgery Residents Low Hanging Fruit • Has the system become disconnected accidentally? • Are all EVD stopcocks open? • Is the EVD correctly leveled (tragus)? • Is the setting correct? Andwith the correct (mmHg vs. cmH2O)? • Are there any obvious kinks in the tubing? • Is the EVD at the same location at the scalp? "Two Tests" for Patency: • The Drop Test • The Raise Test Distal Flushing By Kristen Scheitler, MD @k_scheitler #External #Ventricular #Drain #EVD #Troubleshooting #Neurosurgery #diagnosis #management
