LV Diastolic Diameter Unit Converter

LV diastolic diameter (also called LVIDd or left ventricular internal dimension at end-diastole) is a measurement of the width of the left ventricle when the heart is fully relaxed and filled with blood.

It is obtained during an echocardiogram (ultrasound of the heart) and reflects the size of the heart's main pumping chamber. Normal values typically range from about 42 to 58 mm in men and 38 to 52 mm in women, though these can vary with body size.

An enlarged LV diameter may indicate that the heart is working harder than normal to pump blood, while a small diameter may suggest inadequate filling. This measurement is commonly interpreted alongside ejection fraction (EF), wall thickness, and other echocardiographic parameters.

LV diastolic diameter is not a substance produced by the body. It is a structural measurement of the left ventricle, the heart's largest and most muscular chamber, responsible for pumping oxygenated blood to the entire body through the aorta.