Right ventricular hypertrophy: Difference between revisions

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==Causes of Right Ventricular Hypertrophy==
==Causes of Right Ventricular Hypertrophy==
* [[Atrial septal defect]]
* [[Atrial septal defect]] ddb1090.htm ostium primum] and ddb1107.htm ostium secundum]
* [[Bronchiectasis]]
* [[Cardiac fibrosis]]
* [[Cardiac fibrosis]]
* [[Chronic Obstructive Pulmonary Disease]] ([[COPD]])
* [[Chronic Obstructive Pulmonary Disease]] ([[COPD]])
* [[Churg-Strauss syndrome]]
* [[Coal worker pneumoconiosis]]
* [[Cor pulmonale]]
* [[Cor pulmonale]]
* [[Cystic fibrosis]]
* [[Eisenmenger's Syndrome]]
* [[Eisenmenger's Syndrome]]
* [[Effects of high altitude on humans|High altitude]]<ref>http://www.lib.mcg.edu/edu/eshuphysio/program/section4/4ch7/s4ch7_32.htm</ref>
* [[Effects of high altitude on humans|High altitude]]<ref>http://www.lib.mcg.edu/edu/eshuphysio/program/section4/4ch7/s4ch7_32.htm</ref>
* [[Left ventricular hypertrophy]] or dilation
* [[Left ventricular hypertrophy]] or dilation
* [[Mitral stenosis]]
* [[Mitral stenosis]]
* [[Obstructive sleep apnea]]
* [[Pickwickian Syndrome]]
* [[Pickwickian Syndrome]]
* [[Primary pulmonary hypertension]]
* [[Pulmonary embolism]]
* [[Pulmonary fibrosis]]
* [[Pulmonary hypertension]]
* [[Pulmonic regurgitation]]
* [[Pulmonic regurgitation]]
* [[Pulmonic stenosis]]
* [[Pulmonic stenosis]]
* [[Scoliosis]
* [[Tetralogy of Fallot]]
* [[Tetralogy of Fallot]]
* [[Transposition of the Great Vessels]]  
* [[Transposition of the Great Vessels]]  

Revision as of 00:13, 24 September 2012

Right ventricular hypertrophy
Right Ventricular hypertrophy
ICD-10 I51.7
ICD-9 429.3
DiseasesDB 11623
MeSH D017380

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Synonyms and keywords: RVH

Overview

Right ventricular hypertrophy is a form of ventricular hypertrophy affecting the right ventricle.

Pathophysiology

Blood travels through the right ventricle to the lungs. If conditions occur which decrease pulmonary circulation, meaning blood does not flow well from the heart to the lungs, extra stress can be placed on the right ventricle. This can lead to right ventricular hypertrophy.

Causes of Right Ventricular Hypertrophy

Diagnosis

EKG Findings in Right Ventricular Hypertrophy

Diagnostic Criteria for Right Ventricular Hypertrophy

  • Right axis deviation of +90 degrees or more
  • RV1 = 7 mm or more
  • RV1 + SV5 or SV6 = 10 mm or more
  • R/S ratio in V1 = 1.0 or more
  • S/R ratio in V6 = 1.0 or more
  • Late intrinsicoid deflection in V1 (0.035+)
  • Incomplete RBBB pattern
  • ST T strain pattern in 2,3,aVF
  • P pulmonale or Right atrial enlargement or P congenitale
  • S1 S2 S3 pattern in children
  • Tall R wave in V1 or qR in V1
  • R wave greater than S wave in V1
  • R wave progression reversal
  • Inverted T wave in the anterior precordial leads

Differential Diagnosis of R>S in V1

  • RVH
  • Posterior MI
  • WPW
  • HCM (septal hypertrophy)
  • Kulbertus' block (septal fascicular block)
  • Duchennes Muscular Dystrophy
  • Normal variant
  • V4r may be a more useful and reliable than lead V1 in that it often reveals an r>s while v1 remains normal
  • An incomplete right bundle branch block in the right precordial chest leads may signal the development of RVH
  • In the limb leads right axis deviation develops and at times prominent Q waves simulating an IMI appear in leads 2,3, and aVF.
  • In children an S1 S2 S3 pattern (i.e. an S wave deeper than R in all 3 standard leads) is a reliable index of RVH
  • RV strain can be seen in leads V1 and V2 but also in leads 2,3, aVF

References


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