What is the normal oxygen saturation of the Left Ventricle?

What is the normal oxygen saturation of the Left Ventricle?

• A. 95-99%
• B. 85-89%
• C. 72-75%
• D. 99-100%

Answer: (A)

Oxygen saturation in the left ventricle reflects the oxygen content of arterial blood just as it leaves the heart. In a healthy person, systemic arterial oxygen saturation is about 95-100% at rest, and exams commonly cite a range around 95-99% due to normal measurement variability. Since the left ventricle pumps this oxygenated blood to the tissues, its saturation should match that arterial value. Values such as 85-89% or 72-75% would indicate hypoxemia and are not normal. While 99-100% can occur, 95-99% is the standard reference range used to describe normal LV oxygen saturation.

Oxygen saturation in the left ventricle reflects the oxygen content of arterial blood just as it leaves the heart. In a healthy person, systemic arterial oxygen saturation is about 95-100% at rest, and exams commonly cite a range around 95-99% due to normal measurement variability. Since the left ventricle pumps this oxygenated blood to the tissues, its saturation should match that arterial value. Values such as 85-89% or 72-75% would indicate hypoxemia and are not normal. While 99-100% can occur, 95-99% is the standard reference range used to describe normal LV oxygen saturation.