Evaluation of the B-Smart manometer and the CompuFlo computerized injection pump technology for accurate needle-tip injection pressure measurement during peripheral nerve blockade
| Autor: | Kathleen A Schuster, Nirav P Bhavsar, Robyn S. Weisman, Ralf E. Gebhard |
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| Rok vydání: | 2017 |
| Předmět: |
Peripheral nerve blockade
Manometry law.invention 03 medical and health sciences 0302 clinical medicine Text mining 030202 anesthesiology law Anesthesia Conduction Pressure Medicine 030212 general & internal medicine Injection pressure Infusion Pumps business.industry Needle type General Medicine Nerve injury Injection pump Anesthesiology and Pain Medicine Pressure measurement Needles Monitoring pressure medicine.symptom business Nuclear medicine Autonomic Nerve Block |
| Zdroj: | Regional anesthesia and pain medicine. 44(1) |
| ISSN: | 1532-8651 |
| Popis: | Background and ObjectivesThe exact mechanism of peripheral nerve blocks causing/leading to nerve injury remains controversial. Evidence from animal experiments suggests that intrafascicular injection resulting in high injection pressure has the potential to rupture nerve fascicles and may consequently cause permanent nerve injury and neurological deficits. The B-Smart (BS) in-line manometer and the CompuFlo (CF) computerized injection pump technology are two modalities used for monitoring pressure during regional anesthesia. This study sought to explore the accuracy of these two technologies in measuring needle-tip pressures in a simulated environment.MethodsIn seven simulated needle–syringe combinations, the BS and the CF devices were connected in series through a closed system and attached to a digital manometer at the tip of various needles. The pressures were evaluated in three trials per needle-syringe combination. Sensitivity, specificity, positive predictive value, negative predictive value, and accuracy (F1 Score) were determined for each needle type and overall.ResultsFor pressures ≥15 psi and ≥20 psi, respectively, the CF device demonstrated a sensitivity of 100%, 100%; specificity of 96%, 98%; positive predictive value 93%, 93%; and negative predictive value of 100%, 100%. The BS device demonstrated a sensitivity of 60%, 100%; specificity of 99%, 95%; positive predictive value of 96%, 85%; and negative predictive value of 85%, 100%. Accuracy, as measured by the F1 Score, for detecting a pressure of ≥15 psi was 0.96 for the CF and 0.74 for the BS.ConclusionsFuture research is needed to explore in-vivo performance and evaluate whether either of these devices can impact on clinical outcomes. |
| Databáze: | OpenAIRE |
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