What does a normal echocardiogram measure regarding the heart?

A normal echocardiogram primarily measures the structure and function of the heart, specifically focusing on ventricular function and volume. This imaging technique uses sound waves to create moving pictures of the heart, allowing healthcare providers to assess how well the heart's chambers are contracting, how well blood is being pumped, and any abnormalities in size or shape of the heart.

The evaluation of ventricular function provides crucial information regarding the heart's ability to effectively circulate blood throughout the body. Parameters such as ejection fraction, which indicates the percentage of blood that is pumped out of the heart with each beat, can be determined through an echocardiogram.

On the other hand, the other options relate to assessments that are not directly evaluated through echocardiography. Oxygen saturation is typically measured using pulse oximetry or arterial blood gases, blood sugar levels require blood tests, and cholesterol levels are measured through specific blood tests as well. Thus, the focus of echocardiography on ventricular function and volume is what distinguishes it from other diagnostic assessments.