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Over-the-Needle Versus Microcatheter-Through-Needle Technique for Continuous Spinal Anesthesia: A Preliminary Study

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Preliminary findings reveal easier insertion and fewer complications with catheter-over-needle technique in patients undergoing spinal anesthesia.

Catheter-over-needle technique resulted in easier insertion and fewer complications compared to microcatheter.
Significantly easier catheter introduction into the subarachnoid space was achieved in the catheter-over-needle group (8 vs 3).
Resistance to drug injection and kinking were complications observed only in the microcatheter group, implying a need for improved techniques.
Both techniques provided comparable pain relief and hemodynamic stability postoperatively, indicating similar effectiveness.

Muralidhar et al. (1999) studied this question.

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Preliminary findings reveal easier insertion and fewer complications with catheter-over-needle technique in patients undergoing spinal anesthesia.