âThe dark does not destroy the light; it defines it. It's our fear of the dark that casts our joy into the shadows.â. â Brene BrenÃ©, Brown The gifts Of: Imperfection Let go Of Who You Think'you Re supposed To be And Embrace Who You. are
Definition of Midline. The midline is a horizontal axis that is used as the reference line about which the graph of a periodic function oscillates. The equation of the midline of periodic function is the average of the maximum and minimum values of the function. Figure-1 shows y = sin x and Figure-2 shows y = sin x + 1. The second curve is the first curve shifted vertically up by one unit.
Midline shift is often associated with high intracranial pressure (ICP), which can be deadly. In fact, midline shift is a measure of ICP; presence of the former is an indication of the latter. Presence of midline shift is an indication for neurosurgeons to take measures to monitor and control ICP. Immediate surgery may be indicated when there is a midline shift of over 5 mm. The sign can be caused by conditions including traumatic brain injury, stroke, hematoma, or birth deformity that leads to a raised intracranial pressure.