Hypokinesia – Decreased muscle movement. In relation to the heart, hypokinesia refers to decreased heart wall motion during each heartbeat. It is associated with cardiomyopathy, heart failure, or heart attack. Hypokinesia can involve small areas of the heart (segmental) or entire sections of heart muscle (global). Also called hypokinesis.
Head circumference (HC) – a measurement of the transverse cranial circumference taken at the same level as the BPD. The cranium is measured for the outer edge to the outer edge, using an ellipse to outline the contour of the cranium. This measurement combined with other measurements (BPD, abdominal circumference, femur length, humerus length) are used for dating and growth in the second and third trimesters