Nursing learning sheets for general nursing training and the exam. Topic: Thrombosis, origin, causes, risk factors, types, Virchow triad, therapy My sources are my knowledge from practice within nursing training, internet sources such as Ken Hub and Pupmed as well as nursing books such as Nursing Examen Compact, Nursing Today, Nursing Basics and Interventions, Elsevier Podcasts. The learning sheets are intended for personal purposes only and may not be passed on to third parties. Even though I have high standards for my learning sheets, I assume no liability for the completeness, correctness or up-to-dateness of the learning sheets. I wish you all a lot of fun learning and a successful exam!