ABSTRACT
Measure at the base of the heart (Figure 2.1). Sites for making 2D or M-mode measurements.
Published normal ranges are calculated using measurements made from leading edge to leading edge. Recent guidelines suggest measuring from inner to inner. Diastolic measurements are timed with the onset of the QRS complex of the electrocardiogram and LV systolic measurements at peak septal deflection when septal motion is normal or at peak posterior wall deflection when septal motion is abnormal.
https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9780429160585/5abd4a2b-adf5-4cd0-8be9-2350bf64af7f/content/fig2_1.jpg"/>