arterial line dampening
Loss of accurate arterial pressure waveform fidelity due to air bubbles, clots, or kinked tubing in the monitoring system.
Full Definition
Arterial line dampening refers to the distortion or flattening of arterial pressure waveforms displayed on monitors, typically caused by air bubbles, blood clots, kinked tubing, or loose connections in the pressure monitoring system. In cardiac anesthesia, this can mask critical hemodynamic changes during bypass weaning or inotrope titration. Recognition requires checking for sharp upstrokes and clear dicrotic notches on the waveform, with troubleshooting involving system flushing and connection verification.
Usage
Usage note: Always specify 'arterial line dampening' rather than just 'dampening' for clarity in medical documentation.
In Context
- "The anesthesiologist noted arterial line dampening and flushed the system to restore accurate pressure readings." — Intraoperative monitoring documentation
- "Dampened arterial waveforms may obscure the detection of hypotension during bypass separation." — Clinical care protocol