Physician Control of Needle and Syringe During Aspiration-Injection Procedures with the New Reciprocating Syringe

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Physician Control of Needle and Syringe During Aspiration-Injection

Procedures with the New Reciprocating Syringe

http://www.jrheum.com/abstracts/abstracts06/771.html

ABSTRACT.

Objective. To evaluate physician control of needle and syringe during

aspiration-injection syringe procedures by comparing the new reciprocating

procedure syringe to a traditional conventional syringe.

Methods. Twenty-six physicians were tested for their individual ability to

control the reciprocating and conventional syringes in typical

aspiration-injection procedures using a novel quantitative needle-based

displacement procedure model. Subsequently, the physicians performed 48

clinical aspiration-injection (arthrocentesis) procedures on 32 subjects

randomized to the reciprocating or conventional syringes. Clinical outcomes

included procedure time, patient pain, and operator satisfaction.

Multivariate modeling methods were used to determine the experimental

variables in the syringe control model most predictive of clinical outcome

measures.

Results. In the model system, the reciprocating syringe significantly

improved physician control of the syringe and needle, with a 66% reduction

in unintended forward penetration (p < 0.001) and a 68% reduction in

unintended retraction (p < 0.001). In clinical arthrocentesis, improvements

were also noted: 30% reduction in procedure time (p < 0.03), 57% reduction

in patient pain (p < 0.001), and a 79% increase in physician satisfaction (p

< 0.001). The variables in the experimental system - unintended forward

penetration, unintended retraction, and operator satisfaction -

independently predicted the outcomes of procedure time, patient pain, and

physician satisfaction in the clinical study (p <= 0.001).

Conclusion. The reciprocating syringe reduces procedure time and patient

pain and improves operator satisfaction with the procedure syringe. The

reciprocating syringe improves physician performance in both the validated

quantitative needle-based displacement model and in real

aspiration-injection syringe procedures, including arthrocentesis.

WILMER L. SIBBITT Jr, RANDY R. SIBBITT, ADRIAN A. MICHAEL, DRUCE I. FU,

HILDA T. DRAEGER, JON M. TWINING, and ARTHUR D. BANKHURST