Additionally, Kindergarten kids or even kids in Pre-K will also easily learn from this fun worksheet on Fossils. Children can have fun while learning fun facts on Fossils with this activity sheet while playing the fun FREE puzzle game.
Pressure half time is the time required for the peak pressure gradient to reduce by half (1/2) which will correspond to a decrease in peak velocity by a factor of square root of two (21/2). Pressure half time of a regurgitant jet depends on the severity of the regurgitation and the compliance of the receiving chamber.
Determine the slope of the aortic insufficiency spectral display. In general, the steeper the slope, the more severe the aortic insufficiency; a slope > 3 m/sec may indicate 3+ or 4+ aortic insufficiency. Determine the pressure half-time of the aortic insufficiency spectral display. In general, a pressure half-time < 300 msec indicates significant aortic insufficiency.