Atraumatic versus cutting needles in fluoroscopic lumbar puncture

Area of Science:

• Medical Imaging and Interventional Radiology
• Neurosurgery and Neurology

Background:

• Atraumatic needles are recognized for reducing complications in blind lumbar punctures (LP).
• Their efficacy and impact on procedural difficulty in fluoroscopically guided LPs remain less understood.

Purpose of the Study:

• To assess the comparative difficulty of performing fluoroscopically guided lumbar punctures using atraumatic needles versus conventional cutting needles.
• To evaluate fluoroscopic time, radiation dose, and number of attempts as indicators of procedural difficulty.

Main Methods:

• A single-center retrospective case-control study compared atraumatic and cutting needles for fluoroscopic LPs.
• Fluoroscopic time and Dose Area Product (DAP) were used as surrogate markers for procedural difficulty.
• Data were collected from periods before and after a policy change favoring atraumatic needle use.

Main Results:

• No significant differences were observed in median fluoroscopy time (48s vs. 41s) or median DAP (3.14 vs. 3.28) between cutting and atraumatic needles.
• The mean number of attempts was comparable: 1.02 for cutting needles and 1.05 for atraumatic needles.
• These findings indicate that atraumatic needles do not increase procedural difficulty.

Conclusions:

• The primary use of atraumatic needles in fluoroscopically guided lumbar punctures does not significantly increase screening time, radiation dose, or the number of attempts.
• Given their established benefit in reducing complication rates, atraumatic needles are a viable option for fluoroscopic LPs.