Accuracy of echocardiographically estimated pulmonary artery pressure in dogs with myxomatous mitral valve disease
| Autor: | Sunshine Lahmers, G. Menciotti, Jonathan A. Abbott, Michael Aherne, M. Borgarelli |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
medicine.medical_specialty
040301 veterinary sciences Physiology Systole Hypertension Pulmonary Regurgitation (circulation) 030204 cardiovascular system & hematology Pulmonary Artery 0403 veterinary science 03 medical and health sciences 0302 clinical medicine Dogs Internal medicine medicine.artery medicine Animals Dog Diseases Myxomatous mitral valve General Veterinary business.industry 04 agricultural and veterinary sciences medicine.disease Pulmonary hypertension Confidence interval Tricuspid Valve Insufficiency Catheter Blood pressure Heart failure Pulmonary artery Cardiology Mitral Valve business |
| Zdroj: | Journal of veterinary cardiology : the official journal of the European Society of Veterinary Cardiology. 35 |
| ISSN: | 1875-0834 |
| Popis: | Echocardiographically identified pulmonary hypertension is an independent predictor of poor outcome in dogs affected by myxomatous valvular degeneration (MMVD). Systolic pulmonary arterial pressure is routinely estimated based on its relationship with the Doppler-determined velocity of tricuspid regurgitation as defined by the simplified Bernoulli equation (sPAP_D). Experimental studies suggest that the method is imperfect, but its accuracy in dogs with MMVD is not known.Twenty dogs affected by MMVD that had cardiac remodeling and measurable tricuspid regurgitation.A flow-directed thermodilution monitoring catheter was percutaneously placed in the right external jugular vein and advanced to the main pulmonary artery. Pulmonary arterial systolic pressure was recorded (systolic pulmonary arterial pressure obtained by right heart catheterization [sPAP_C]). A second operator contemporaneously acquired tricuspid regurgitant velocity spectra to calculate sPAP_D. Each operator was blinded to the result of the other techniques.Technical difficulties prevented the analysis of catheterization data in two dogs. Eighteen measurement pairs were therefore used for comparison of sPAP_C and sPAP_D through correlation and Bland-Altman analysis. A statistically significant bias between sPAP_C and sPAP_D (mean difference = 0.5 mmHg; confidence interval = -6.5 mmHg, +7.5 mmHg) was not detected. The interval of agreement between the techniques was wide (-27.3 mmHg, +28.2 mmHg). A significant linear association between the two techniques was not identified (r = 0.11, p=0.17).Echocardiographically estimated pulmonary artery pressure poorly agrees with sPAP_C measurement in dogs affected by MMVD and cardiac remodeling with or without previously diagnosed congestive heart failure. In these dogs, sPAP_D could under- or over-estimate sPAP_C by more than 20 mmHg, and therefore caution should be used when interpreting sPAP_D. |
| Databáze: | OpenAIRE |
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