Home
http://www.virbac.fr/ http://www.boehringer-ingelheim.com/ http://www.novartis.com/ http://www.animalhealth.bayerhealthcare.com/
vetcontact
Vetrinär
Tiermedizin
  WELCOME  
vetcontact
Vetrinär
Tiermedizin
  Home  
  Login / Newsletter  
vetcontact
Vetrinär
Tiermedizin
  CONTACTS  
vetcontact
Vetrinär
Tiermedizin
  Classifieds  
  New Products  
  VetCompanies  
  VetSchools  
vetcontact
Vetrinär
Tiermedizin
  PROFESSION  
vetcontact
Vetrinär
Tiermedizin
  Edutainment  
  VetAgenda  
  Presentations  
  Posters  
  ESAVS  
  Specialisation  
vetcontact
Vetrinär
Tiermedizin
  INSIGHT  
vetcontact
Vetrinär
Tiermedizin
  Congress News  
  Picture Galleries  
vetcontact
Vetrinär
Tiermedizin
  PRODUCTS  
vetcontact
Vetrinär
Tiermedizin
  Bayer  
  Boehringer Ing.  
  Novartis  
  Virbac

 
  Simply book for less...  
    

Bovine    Equine    Small Animal Practice    Swine Practice    Articles    Vetjournal    
deutsch english español polski francais
Home / WELCOME / Archiv / Equine /     
 
Variation of echocardiographic parameters within the `normal` horse population
Echocardiography has been established in equine medicine over at least one decade. But do we really know the `normal` values at least of standardbred horses? An important question which is the reason for this interesting and important study from Scandinavia.

The purpose of this study was to assess the intraobserver variation of various echocardiographic measures in standardbred trotters.

Serial echocardiographic examinations were carried out on eight standardbred mares by one ultrasonographer for 5 separate days.

During each examination, five nonconsecutive cardiac cycles (frames) were recorded and an average obtained for each individual measure. Various echocardiographic measures were obtained by use of two-dimensional (2-D), M-mode, color flow Doppler and pulsed wave Doppler echocardiography.

The total variation in the echocardiographic measurements was split into three levels: the variation between horses, the day-to-day variation within individual horses, and finally the variation within horse on the same day of examination (intercardiac cycle variation).

The intraclass correlation coefficient (ICC) was calculated for each measure. The ICC represents the variability of the measurements because of differences between the horses.

In general the 2-D, M-mode and color flow Doppler measures had higher ICC values (ICC from 0.63 to 0.95) than the pulsed wave Doppler measures (ICC from 0.24 to 0.46), and the former measures were more repeatable than the pulsed wave measures.

Exceptions to that were left ventricular free wall in diastole, the pulmonary artery in systole and the left ventricular mass, which all had low repeatability (ICC from 0.22 to 0.49).

The results were used to calculate the relative differences that must be detected to diagnose a statistically significant change between two measurements in an individual horse.

Differences from 4.2% to 21.8% must be achieved to document significant changes between serial measurements.

A general tendency is that the color flow and pulsed wave Doppler measures require a larger relative difference (11.421.8%) between the measures to point out statistically significant cardiac changes than the 2-D and M-mode measures (4.213.9%).

Source: Buhl, Rikke, Ersbøll, Annette Kjær, Eriksen, Lis & Koch, Jørgen (2004): SOURCES AND MAGNITUDE OF VARIATION OF ECHOCARDIOGRAPHIC MEASUREMENTS IN NORMAL STANDARDBRED HORSES. In: Veterinary Radiology & Ultrasound 45 (6), 505-512.




Tell a friend   |   Print version   |   Send this article

EQUINE

Two regimens of lidocaine infusion in horses undergoing laparotomy for colicmembers
Various lidocaine protocols are described for horses undergoing Colic surgery. This interesting prospective, randomized clinical study compares the effects of administering or not administering a loading intravenous (IV) bolus of lidocaine prior to its constant rate infusion (CRI). Effects investigated during isoflurane anaesthesia were end-tidal isoflurane concentration (Fe′ISO), cardiovascular function, anaesthetic stability and the quality of recovery.
Thirty-six client-owned horses were enrolled.

  • Biofilms of Candida spp. from the ocular conjunctiva of horses members
  • PARR clonality testing in a horse with a solitary retropharyngeal lymphomamembers
  • New sensor design for buccal pulse oximetry in horsesmembers
  • Uterine isolates and antimicrobial susceptibility in mares with post-partum metritismembers
  • Right ventricular function during acute exacerbation of severe asthma in horsesmembers
  • Biuret versus refractometry methods to measure serum total proteins in ruminantsmembers
  • Steatitis in equids - clinical and ultrasonographical findingsmembers
  • Correlation of overground endoscopy to resting laryngeal function in racehorsesmembers
  • Pigment retinopathy in warmblood horses with EMNDmembers
  • Maxillary odontogenic myxoma in six young horsesmembers
  • Managing equine ataxia due to cervical vertebral stenotic myelopathymembers
  • Pirfenidone to treat equine corneal scarringmembers


  • [ Home ] [ About ] [ Contact / Request ][ Disclaimer ]

    Copyright © 2001-2016 VetContact GmbH
    All rights reserved