Echocardiography in the domestic cat

Area of Science:

• Veterinary Cardiology
• Diagnostic Imaging in Animals
• Comparative Cardiovascular Physiology

Background:

• Echocardiography is a vital non-invasive tool for assessing cardiac health in animals.
• Establishing normal reference values is essential for accurate interpretation of echocardiographic findings in cats.
• Previous studies may lack comprehensive data across various measurements for healthy feline populations.

Purpose of the Study:

• To compile a comprehensive database of echocardiographic reference values for normal, healthy cats.
• To establish normal ranges for left ventricular dimensions, wall thicknesses, and contractility indices.
• To validate echocardiographic measurements against postmortem anatomical data.

Main Methods:

• Echocardiographic examinations were performed on 25 healthy cats of various breeds, sexes, and weights.
• Twelve key measurements including wall thickness, luminal dimensions, and contractile indices were recorded.
• In a subset of 8 cats, echocardiographic and cineangiographic measurements were compared with postmortem data.

Main Results:

• Average left ventricular wall thickness was 0.37 ± 0.08 cm; septal wall thickness averaged 0.45 ± 0.09 cm.
• Normal left ventricular dimensions (diastole: 1.48 ± 0.26 cm; systole: 0.88 ± 0.24 cm) and shortening fraction (41 ± 7.3%) were determined.
• Echocardiographic measurements showed less than 15% deviation compared to postmortem findings, with an average deviation of -0.01 ± 0.26 mm.

Conclusions:

• This study provides valuable echocardiographic reference values for healthy cats.
• The data supports the accuracy and reliability of echocardiography for assessing feline cardiac structure and function.
• These reference values will aid veterinarians in the diagnosis and management of cardiovascular diseases in cats.