What is the difference between LV Mass vs LV Mass Corrected?
LV Mass Corrected multiplies the LV mass value by 0.8 to "correct" for an overestimation of LV mass, based on initial recommendations by the American Society of Echocardiography and various studies.
The formula used to calculate LV Mass from M-mode echo was based off the original recommended standard estimation made by Troy et al.1 This was then shown by Devereux's2 group to be an overestimation when compared to necropsy, which is what the LV Mass Corrected value is based on.
Here are the formulas (same used for both B and M-mode calculations):
1. Troy BL, Pombo J, Rackley CE. Measurement of left ventricular wall thickness and mass by echocardiography. Circulation. 1972;45(3):602-611. doi:10.1161/01.cir.45.3.602
2. Devereux RB, Alonso DR, Lutas EM, et al. Echocardiographic assessment of left ventricular hypertrophy: comparison to necropsy findings. Am J Cardiol. 1986;57(6):450-458. doi:10.1016/0002-9149(86)90771-x