Ventricular assist devices are an increasingly important technology due to the growing rate of heart and related disorders throughout the world. This book presents comprehensive and latest information on ventricular assist devices and their complications. It presents a broad overview on technical advances as well as the clinical outcomes, current indications and countermeasures against complications. It also discusses latest techniques to identify clinical effectiveness at the patient's bedside. The book elaborates the present status of countermeasures against gastrointestinal bleeding and ongoing research on allosensitization during the usage of continuous flow pump. It analyzes the possibility of a new adjunct therapy in combination with ventricular assist devices. The objective of this book is to impart significant knowledge related to research and clinical applications of ventricular assist devices.