1 / 25

Echocardiographic Findings in Canine HW Disease

Echocardiographic Findings in Canine HW Disease. Luigi Venco DVM, SCPA, EVPC Dipl. Pathogenesis. Chronic disease Damages first at the pulmonary parenchyma and arterial vessels

misha
Download Presentation

Echocardiographic Findings in Canine HW Disease

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Echocardiographic Findings in Canine HW Disease Luigi Venco DVM, SCPA, EVPC Dipl.

  2. Pathogenesis • Chronicdisease • Damages first at the pulmonaryparenchyma and arterialvessels • Right cardiacchambersdilatationonly in the late stage of the diseaseand whenpulmonaryparenchymal and arterialdiseases are presentonly

  3. Look for • Pulmonaryhypertension • HW visualization • Right cardiacfailure

  4. PulmonaryarteriesenlargementPulmonaryhypertension

  5. RPAD Index (Right Pulmonary Artery DistensibilityIndex) «Systolic diameter less Diastolic diameter, divided by systolic diameter»

  6. RPAD Index (Right Pulmonary Artery Distensibility Index) «Systolic diameter less Diastolic diameter, divided by systolic diameter» A value lower than 35% is indicative of pulmonary hypertension Between 35 % to 28 % is correlated to mild systolic pulmonary hypertension (30- 55 mm Hg), to moderate pulmonary hypertension ( 56-79 mm Hg) if in between 27 % to 23 % and to severe pulmonary hypertension ( > 79 mm Hg)

  7. PulmonaryhypertensionRight cardiacchambersenlargementParadoxycalseptalmotion

  8. Doppler echocardiography (CFM)Tricuspidal/Pulmonaryregurgitation

  9. Doppler echocardiography (CW)Pulmonary pressure

  10. Tricuspidalsystolicregurgitation Assessment of pulmonary artery systolic pressure (PASP) can be carried out by measuring maximal tricuspid regurgitation velocity, and applying the modified Bernoulli equation to convert this value into pressure values. Estimated right atrial pressure (RAP) must be added to this obtained value

  11. Pulmonarydiastolicregurgitation Mean (PAMP) and diastolic PA-pressures (PADP) can be estimated by assessment of the pulmonary regurgitation.

  12. HW visualization The heartworms are visualized as double, linear parallel objects (diameter 1,3 mm) floating into the lumen of pulmonary arteries or into the right cardiac chambers (n case of Caval syndrome)

  13. HW visualization

  14. HW visualization

  15. HW visualizationviews(right side)

  16. HW visualizationviews(right side)

  17. HW visualizationviews(subxifoidea)

  18. HW visualizationviews(subxifoidea)

  19. HW visualizationviews(subxifoidea)

  20. HW visualizationviews(subxifoidea)

  21. HW visualizationviews(left side)

  22. HW visualizationviews(left side)

  23. Caval Syndromedue to a sudden rise in pulmonary pressure and the subsequent displacement of worms from the pulmonary artery into the right cardiac chambers

  24. Caval Syndromedue to a sudden rise in pulmonary pressure and the subsequent displacement of worms from the pulmonary artery into the right cardiac chambers

More Related