: Usually due to excessive tubing length or small-bore catheters. Fix : Shorten tubing or remove unnecessary stopcocks. 🩺 Clinical & Anatomical Fixes
Troubleshooting a failed arterial line (A-line) requires a systematic approach to identify whether the issue is mechanical, anatomical, or clinical. When a line "fails," it typically manifests as a loss of waveform, inability to flush, or inaccurate pressure readings. 🛠️ Mechanical Troubleshooting
: Ensure it is inflated to 300 mmHg ; low pressure causes blood backflow or waveform damping. HOW TO FIX FAILED ARTERIAL LINE
The shape of the waveform provides clues to the specific failure mode.
: If the initial puncture fails, some clinicians use the "through-and-through" method—piercing both walls and slowly withdrawing until pulsatile flow returns. ⚠️ When to Remove the Line The line should be discontinued immediately if you observe: The Arterial Line Assessment & Troubleshooting! : Usually due to excessive tubing length or
If the hardware is intact but the line is "positional" or sluggish, try these interventions:
Before assuming the catheter has failed, check the external components. When a line "fails," it typically manifests as
: Often caused by air bubbles, long extension tubing, kinks, or a partial clot. Fix : Purge air bubbles and straighten any kinks.