This casebook covers ultrasound guided vascular access with a focus on patient safety. Vascular access is the catalyst between provider and patient. Initially, patients were treated at hospitals for grave illnesses or terrible accidents; however, due to significant strides in medicine, the emerging hospitalized patient is now more commonly treated for chronic illnesses. For these patients, repeated hospital visits slowly deplete their vasculature, creating one of modern medicine’s greatest obstacles: vascular access. This book provides safe solutions to bedside clinical challenges from peripheral to tunneled central lines in the neonatal, pediatric, and adult patient populations.