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Reliable, easy-to-read patient information on common medical conditions — written in plain language, free of jargon, and grounded in current evidence. Browse the most frequent diagnoses, understand what they mean for everyday life, and learn which steps and questions help you have a focused conversation with your doctor.

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Non-bacterial thrombotic endocarditis classification

Introduction

Overview

Overview

According to Allen and Sirota, non-bacterial thrombotic endocarditis may be classified according to morphology into 5 subtypes

Classification

Classification

According to Allen and Sirota,[1] [2] Non-bacterial thrombotic endocarditis may be classified according to morphology into 5 subtypes:

Allen and Sirota macroscopic classification of NBTE
Type of NBTE Features
Type 1
  • Small
  • < 3 mm
  • Univerrucal
  • Firmly attached to the valve
Type 2
Type 3
  • Small
  • 1 – 3 mm
  • Multiverrucal
  • Friable
Type 4
  • Large
  • > 3 mm
  • Multiverrucal
  • Friable
Type 5
  • “Healed-type”
  • Similar in consistency to the attached valve
References

References

  1. ↑ Allen AC, Sirota JH (November 1944). “The Morphogenesis and Significance of Degenerative Verrucal Endocardiosis (Terminal Endocarditis, Endocarditis Simplex, Nonbacterial Thrombotic Endocarditis)”. Am. J. Pathol. 20 (6): 1025–55. PMC 2033063. PMID 19970792.
  2. ↑ Sanjay Asopa, Anish Patel, Omar A. Khan, Rajan Sharma, Sunil K. Ohri, Non-bacterial thrombotic endocarditis, European Journal of Cardio-Thoracic Surgery, Volume 32, Issue 5, November 2007, Pages 696–701, https://doi.org/10.1016/j.ejcts.2007.07.029

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Aisha Adigun, B.Sc., M.D.[2]