External validation of the patient reported Villalta scale for the diagnosis of post-thrombotic syndrome.

Introduction: The Villalta scale is the endorsed tool to diagnose and grade the severity of post thrombotic syndrome (PTS); however, assessing presence and severity of PTS is time consuming and relies on both the clinician and patient’s assessments. The patient reported Villalta scale version 2 (PRV2) is a visually assisted form that enables patients to self-assess presence and severity of PTS. Herein, we report on external validation of this tool. Methods: We assessed the agreement and kappa values of PRV2 to diagnose and assess severity of PTS compared with the original Villalta score in a cohort of 181 patients (196 limbs)

[1]  S. Kahn,et al.  Statins for venous event reduction in patients with venous thromboembolism: A multicenter randomized controlled pilot trial assessing feasibility , 2021, Journal of thrombosis and haemostasis : JTH.

[2]  S. Kahn,et al.  Development and validation of a tool for patient reporting of symptoms and signs of the post-thrombotic syndrome , 2016, Thrombosis and Haemostasis.

[3]  Keith J. Petrie,et al.  Patients’ Perceptions of Their Illness , 2012 .

[4]  P. Prandoni,et al.  Post‐thrombotic syndrome: prevalence, prognostication and need for progress , 2009, British journal of haematology.

[5]  P. Prandoni,et al.  Definition of post‐thrombotic syndrome of the leg for use in clinical investigations: a recommendation for standardization , 2009, Journal of thrombosis and haemostasis : JTH.

[6]  S. Kahn.  Measurement properties of the Villalta scale to define and classify the severity of the post‐thrombotic syndrome , 2009, Journal of thrombosis and haemostasis : JTH.

[7]  S. Kahn,et al.  Identifying unprovoked thromboembolism patients at low risk for recurrence who can discontinue anticoagulant therapy , 2008, Canadian Medical Association Journal.

[8]  S. Kahn,et al.  Inter-observer reliability of measures to assess the post-thrombotic syndrome , 2007, Thrombosis and Haemostasis.

[9]  P. Monagle,et al.  Post-thrombotic syndrome , 2002, Archives of disease in childhood.

[10]  S. Vedantham.  Valvular dysfunction and venous obstruction in the post-thrombotic syndrome. , 2009, Thrombosis research.