What causes Underdamped arterial waveform?
What causes Underdamped arterial waveform?
Underdamping (defined as when the oscillations are too pronounced and can lead to a false high systolic or a false low diastolic pressure). Causes include: Catheter whip or artefact. Stiff non-compliant tubing.
What does arterial waveform represent?
Understanding the arterial waveform The waveform is a diagrammatic representation of the flow of blood in the artery. It correlates directly with the ECG trace.
What causes the Dicrotic wave in the aortic blood pressure waveform?
The change in shape and position of the dicrotic wave is due to it being caused by reflections of the arterial pressure wave rather than aortic valve closure.
What is normal arterial waveform?
Pumping by the heart results in the development of pressure in the aorta and the arteries. If the pressure in the aorta is recorded, a pressure wave can be observed.
What is a normal waveform?
The primary components of a normal waveform are (1) high forward flow during systole due to left ventric- ular contraction, (2) transient period of flow reversal in early diastole resulting from reflection from a high-resistance outflow bed, and (3) a forward flow component resulting from reflection from a closed …
What is Overdamped underdamped and critically damped?
Solution. An overdamped system moves slowly toward equilibrium. An underdamped system moves quickly to equilibrium, but will oscillate about the equilibrium point as it does so. A critically damped system moves as quickly as possible toward equilibrium without oscillating about the equilibrium.
What is Overdamping and Underdamping in arterial line?
Overdamping will result in an under-reading of systolic blood pressure and an over-reading of diastolic blood pressure. The response time of the system is also increased. In an underdamped system pressure waves overshoot, with excessively high systolic blood pressures and low diastolic blood pressures.
What does Dicrotic wave mean?
dicrotic wave the second portion of the tracing of a sphygmograph of the arterial pulse or arterial pressure after the dicrotic notch, attributed to the reflected impulse of closure of the aortic valves. Called also recoil wave.
What does the Dicrotic notch on an arterial waveform indicate?
The dicrotic notch, or incisura, which interrupts the arterial downslope, represents the closure of the aortic valve, which occurs just moments after the start of diastole. At the end of diastole, the waveform reaches its nadir.
What is a normal arterial line pressure?
Normal Ranges: Systolic Blood Pressure: 90 – 120 mm Hg. Diastolic Blood Pressure: 50 – 80 mm Hg. Mean Arterial Pressure: 70 – 100 mm Hg.