The patient must have nothing by mouth (NPO) 6 hours prior to the exam. The Radiologist will write the pre-operative orders. Pre-labs of CBC, PT, (PTT) may be ordered. The patient should continue all oral meds especially anti-hypertensive medications.
A chronograph is a specific type of watch that is used as a stopwatch combined with a display watch. A basic chronograph has an independent sweep second hand; it can be started, stopped, and returned to zero by successive pressure on the stem. Less simple chronographs use additional complications and can have multiple independent hands to measure seconds, minutes, hours and even tenths of a second.
A seismograph is simply a device that can measure the intensity of a âseismicâ type of activity such as an earthquake.But aside from the earthquakeâs intensity, seismographs can also measure and record the earthquakeâs duration and direction.he basic concept of seismographs or seismometers is that it involves an internal mass or weight since it will also move during an earthquake. Using a system of levers, weights, springs, and electronics in modern versions, seismographs are able to record information on the shaking of the ground.