Effect of Nerve Stimulation Use on the Success Rate of Ultrasound-Guided Subsartorial Saphenous Nerve Block

Montgomery, Shaylyn H; Shamji, C. M.; Gao, Yi; Yarnold, Cynthia H.; Head, Stephen; Bell, S. C.; Schwarz, Stephan

doi:10.1097/01.sa.0000525658.01094.d7

Cited by 2 publications

(3 citation statements)

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“…22,23 In a previous study, 45% of patients who received ultrasound-guided ACB with 10 mL of ropivacaine 0.5% showed complete absence of pinprick sensation in the saphenous area at 30 minutes postinjection. 24 This result is consistent with our finding that the median effective volume of ropivacaine 0.5% for ultrasound-guided ACB was 10.4 mL.…”

Section: Discussionsupporting

confidence: 93%

Median effective volume of ropivacaine 0.5% for ultrasound-guided adductor canal block

Yan

Zheng

et al. 2018

J Int Med Res

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ObjectiveThis study aimed to identify the median effective volume of ropivacaine 0.5% for ultrasound-guided adductor canal block (ACB).MethodsThirty-two patients received ultrasound-guided ACB for knee arthroscopic meniscectomy. The criterion for successful ACB was the loss of pinprick sensation in the saphenous area (medial knee, leg, and foot). The volume of ropivacaine 0.5% in each case was determined using the up-down method and used for calculating the median effective dose.ResultsThe mean age, weight, and height of patients were 28.6 ± 7.1 years, 68.2 ± 10.6 kg, and 172.5 ± 6.4 cm, respectively. Among patients who received 18- and 15-mL doses, ACB was successful in all four cases. Among patients who received a 12-mL dose, ACB was effective in eight and ineffective in two cases. Among patients who received a 10-mL dose, ACB was successful in six and unsuccessful in seven cases. In patients who received an 8-mL dose, ACB was ineffective in all five cases. The median effective volume of ropivacaine 0.5% was 10.4 mL (95% confidence interval, 9.1–11.4 mL). In all effective cases, the median quadriceps strength was grade 5.ConclusionsThe median effective volume of ropivacaine 0.5% is 10.4 mL for ultrasound-guided ACB.

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Section: Discussionsupporting

confidence: 93%

Median effective volume of ropivacaine 0.5% for ultrasound-guided adductor canal block

Yan

Zheng

et al. 2018

J Int Med Res

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“…Given that electrical nerve stimulation can clarify difficult ultrasound interpretation and possibly aid in the prevention of needle‐nerve contact, while its use is not universal, we must consider if there is a downside (Tables 1 and 2). Several studies have demonstrated prolonged block procedure times when ultrasound was combined with nerve stimulation compared with ultrasound alone [25, 26, 50]. It is possible this is more clinically relevant when each nerve is being sought and stimulated purposefully, rather than the stimulation being used at a fixed current output to prevent nerve contact.…”

Section: Disadvantages Of Nerve Stimulation As An Adjunctmentioning

confidence: 99%

“…Several studies have demonstrated prolonged block procedure times when ultrasound was combined with nerve stimulation compared with ultrasound alone [25,26,50]. It is possible this is more clinically relevant when each nerve is being sought and stimulated purposefully, rather than the stimulation being used at a fixed current output to prevent nerve contact.…”

Section: Disadvantages Of Nerve Stimulation As An Adjunctmentioning

confidence: 99%

The role of peripheral nerve stimulation in the era of ultrasound‐guided regional anaesthesia

Gadsden

2021

Anaesthesia

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Summary With the widespread use of ultrasound for localising nerves during peripheral nerve blockade, the value of electrical nerve stimulation of evoked motor responses has been questioned. Studies continue to show that, compared with nerve stimulation, ultrasound guidance alone leads to: significantly improved block success; decreased need for rescue analgesia; decreased procedural pain; and lower rates of vascular puncture. Nerve stimulation combined with ultrasound does also not appear to improve block success rates, apart from those blocks where the nerves are challenging to view, such as the obturator nerve. The role of nerve stimulation has changed in the last 15 years from a technique to locate nerves to that of an adjunct to ultrasound. Nerve stimulation can serve as a monitor against needle‐nerve contact and may be useful in avoiding nerves that are in the needle trajectory during specific ultrasound guided techniques. Nerve stimulation is also a useful adjunct in teaching novices ultrasound‐guided regional anaesthesia, especially when the position and or appearance of nerves may be variable. In this review, the changing role of nerve stimulation in contemporary regional anaesthetic practice is presented and discussed.

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Effect of Nerve Stimulation Use on the Success Rate of Ultrasound-Guided Subsartorial Saphenous Nerve Block

Cited by 2 publications

References 0 publications

Median effective volume of ropivacaine 0.5% for ultrasound-guided adductor canal block

Median effective volume of ropivacaine 0.5% for ultrasound-guided adductor canal block

The role of peripheral nerve stimulation in the era of ultrasound‐guided regional anaesthesia

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