Radiology, Interventional/methods; Thrombectomy/methods; Thrombolytic Therapy/methods; Ultrasonic Therapy/methods; Venous Thrombosis/therapy; Acute Disease; Anticoagulants/therapeutic use; Causality; Critical Care/methods; Critical Care/trends; Humans; Nurse's Role; Patient Discharge; Postphlebitic Syndrome/etiology; Postphlebitic Syndrome/prevention & control; Practice Guidelines as Topic; Pulmonary Embolism/etiology; Pulmonary Embolism/prevention & control; Radiology, Interventional/trends; Recurrence; Technology Assessment, Biomedical; Thrombectomy/nursing; Thrombectomy/trends; Thrombolytic Therapy/nursing; Thrombolytic Therapy/trends; Ultrasonic Therapy/nursing; Ultrasonic Therapy/trends; Vena Cava Filters; Venous Thrombosis/complications; Venous Thrombosis/diagnosis; Venous Thrombosis/epidemiology