What does it mean when an arterial line is Overdamped?

What does it mean when an arterial line is Overdamped?

Overdamped trace Mean arterial pressure often remains the same. Causes of over damping are a kinked catheter, blocked line or air bubbles in the line. If such a trace is seen then flushing the line or removing air bubbles may restore the accurate undamped trace.

What causes Overdamped arterial waveform?

There are a number of causes of an over-damped waveform. Tiny air bubbles in the tubing, a clot at the tip of the catheter, tubing that is “too” stiff or kinked and / or a catheter that is positioned against the wall of the blood vessel.

What causes a dampened 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 causes arterial line whip?

Resonance or whip causes falsely increased systolic readings and falsely decreased diastolic readings. It occurs when the system’s frequency of oscillation (i.e., heart rate) matches the system’s natural frequency of vibration causing whip in the signal.

How do you tell if a system is overdamped?

To understand overdamped vs critically damped, one can say that a system that is overdamped goes slowly toward equilibrium, whereas a system that is critically damped moves as swiftly as possible toward equilibrium without fluctuating about it.

What is underdamped motion?

Damped harmonic oscillators have non-conservative forces that dissipate their energy. Critical damping returns the system to equilibrium as fast as possible without overshooting. An underdamped system will oscillate through the equilibrium position.

What does swing on arterial line mean?

when the aortic and pulmonary valves snap shut causing pressure reverberations through the arterial. system. Flat or non-existent notch can mean that the patient is dehydrated (line trace will also ‘swing’)

What is the difference of underdamped and overdamped oscillation systems?

An underdamped system will oscillate through the equilibrium position. An overdamped system moves more slowly toward equilibrium than one that is critically damped.

What causes overdamped arterial waveform?

Overdamping (defined as when the oscillations following the downstroke are sluggish and can underestimate systolic pressure or overestimate diastolic pressure). Causes include: Loose connections. Air bubbles. Kinks. Also, what causes Overdamped arterial waveform?

What happens to the arterial waveform during systole?

During systole, the aortic valve opens, and there is a rapid ejection of blood from the left ventricle into the aorta. The arterial waveform will show an upswing followed by a downward turn.

What information can be derived from the arterial pressure waveform?

In short, the information derived from the arterial pressure waveform is: The arterial pressure wave (which is what you see there) is a pressure wave; it travels much faster than the actual blood which is ejected.

What factors affect the shape of the arterial pressure waves?

Peripheral vascular disease, heart failure, HOCM, vasodilated shock, irregular pulse, arteriovenous malformations and what have you – all of these have some influence on the arterial pressure waveform by means of delaying, exaggerating, reducing or accelerating the pressure wave reflection.