Comparison of fluoroscopic cardiovascular measurements from healthy dogs obtained at end-diastole and end-systole
| Autor: | J. C. Chan, C. S. Brown, Lance C. Visser, Rachel E. Pollard, Lynelle R. Johnson |
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| Rok vydání: | 2020 |
| Předmět: |
Male
medicine.medical_specialty Systole 040301 veterinary sciences Physiology Radiography Diastole 030204 cardiovascular system & hematology CARDIOVASCULAR MEASUREMENTS 0403 veterinary science 03 medical and health sciences Dogs 0302 clinical medicine Reference Values Internal medicine Animals Medicine Fluoroscopy Prospective Studies Respiratory system Prospective cohort study General Veterinary medicine.diagnostic_test Cardiac cycle business.industry Heart 04 agricultural and veterinary sciences Heart score cardiovascular system Cardiology Female business |
| Zdroj: | Journal of Veterinary Cardiology. 29:1-10 |
| ISSN: | 1760-2734 |
| Popis: | Quantitative measurements are commonly implemented to objectively evaluate heart size in dogs. However, recent studies suggest that the phase of cardiac cycle can impact vertebral heart score, thereby potentially influencing clinical management. This study used fluoroscopy to assess the impact of the cardiac cycle on quantitative cardiovascular measurements in healthy dogs of various breeds.This was a prospective study. Multiple cardiac and respiratory cycles were recorded fluoroscopically. Peak inspiratory end-systole and end-diastole frames were captured from 49 dogs in right lateral recumbency. Vertebral heart score (VHS), cardiothoracic ratio (CTR), vertebral left atrial size (VLAS), and caudal vena cava diameter ratio (CVCDR) measurements were performed. Mean cardiac measurements were compared between cardiac cycle phases, and the impact of body condition score (BCS), weight, thoracic conformation, sex, and age was evaluated.Cardiac cycle had a significant impact on VHS (mean difference: 0.36 ± 0.14 vertebral units between systole and diastole; p 0.001) and CTR (mean difference: 2.2 ± 1.2% between systole and diastole; p 0.001). Cardiac cycle had no significant impact on VLAS or CVCDR. Increasing BCS significantly increased variation between systole and diastole in CTR measurements (p = 0.024).The cardiac cycle has a significant effect on VHS and CTR but does not impact VLAS or CVCDR. These findings should be taken into consideration during clinical use of these measurements, especially if a patient is being monitored for cardiac changes over time via serial radiographs. |
| Databáze: | OpenAIRE |
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