Objective Injection Pressure Monitoring for Peripheral Nerve Blocks
BSmart™ Injection Pressure Monitor is an easy-to-use inline injection pressure monitoring device providing clinicians with objective pressure information regardless of who performs the actual block.
While perineural injections are typically associated with low opening injection pressure (< 15psi) 1, high opening pressure can indicate needle-nerve-contact 1 or intrafascicular needle placement.4
Monitoring the opening injection pressure with BSmartTM may prevent injections into poorly compliant tissue by aborting an injection and repositioning the needle when the monitor indicates that opening injection pressure is abnormally high (> 15psi).
See how it works for Interscalene Brachial Plexus Block and watch BSmart™ in action.
With permission from www.nysora.com
User Benefits
- Monitors injection pressure objectively
- Alerts the physician of high opening injection pressure
- Prevents too forceful, rapid injections
- Allows consistent monitoring of resistance to injection regardless of who performs the actual injection
- Allows for standardisation and objective documentation of injection pressure information during nerve block procedures
Triple Monitoring
Ultrasound
Monitors needle advancement and spread of local anaesthetic in real time.1,2
Nerve Stimulation
Identifies nerves by eliciting specific distal motor response; response at < 0.5 mA may indicate needle-nerve-contact or intraneural placement of the needle.3,4,5
Injection Pressure
High opening injection pressure (> 15psi) may indicate or detect needle-nerve-contact, intrafascicular needle placement, injection into poorly compliant tissues (fasciae, tendons) or needle obstruction.3,6
Literature References
1 Neal et al. The ASRA evidence-based medicine assessment of ultrasound- guided regional anesthesia and pain medicine: Executive summary. Reg Anesth Pain Med, 2010; 35:S1-9
2 Sites et al. Incidence of local anesthetic systemic toxity and postoperative neurologic symptoms associated with 12,668 ultrasoundguided nerve blocks: an analysis from a prospective clinical registry. Reg Anesth Pain Med, 2012; 37(5):478-82
3 Gadsden et al. Opening injection pressure consistently detects needle-nerve contact during ultrasound-guided interscalenebrachial plexus block. Anesthesiology, Jan 2014; 120:1246-53
4 Bigeleisen et al. Extraneural versus intraneural stimulation thresholds during ultrasound-guided supraclavicular block. Anesthesiology, 2009; 110(6):1235-43
5 Chan et al. An ultrasonographic and histological study of intraneural injection and electrical stimulation in pigs. Anesth Anlag, 2007; 104(5):1281-4
6 Orebaugh et al. Brachial plexus root injection in a human cadaver model: Injectate distribution and effects on the neuraxis. Reg Anesth Pain Med, 2012; 37(5):525-9