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Randomized Controlled Trial
. 2024 Feb;34(2):1123-1131.
doi: 10.1007/s00330-023-10148-7. Epub 2023 Aug 19.

Ultrasound-guided genitofemoral nerve block for femoral arterial access gain and closure: a randomized controlled trial

Youngjong Cho  1 , Sung-Joon Park  2 , Hyoung Nam Lee  3 , Sangjoon Lee  4 , Woong Hee Lee  5 , Seung Soo Kim  5 , Nam Hun Heo  6
Affiliations
Randomized Controlled Trial

Ultrasound-guided genitofemoral nerve block for femoral arterial access gain and closure: a randomized controlled trial

Youngjong Cho et al. Eur Radiol. 2024 Feb.

Abstract

Objectives: This study aimed to compare the analgesic efficacy and safety of the femoral branch block of the genitofemoral nerve (FBB) versus local infiltration anesthesia (LIA) for femoral arterial access gain and closure.

Methods: Eighty-two patients (age, 64.8 ± 10.9 years; female, 30.5%) undergoing endovascular procedures using 5-Fr femoral sheath were assigned to either FBB (n = 41) or LIA (n = 41). In both groups, 2% lidocaine HCL with 1:100,000 epinephrine was used as an anesthetic solution. Pain scores during access gain and closure were evaluated using a visual analog scale (score 0-10), patient satisfaction levels with the quality of anesthesia were scored on a 7-point Likert scale, and adverse events were recorded.

Results: The primary endpoint, pain scores during access closure, was significantly lower in the FBB group than in the LIA group (0.1 ± 0.37 vs 1.73 ± 0.92; p < 0.001). The FBB group also had significantly lower pain scores during access gain compared to the LIA group (0.83 ± 0.83 vs 2.78 ± 1.26; p < 0.001). There was an inverse relationship between pain scores and FBB after adjustment for age, gender, and body mass index (p < 0.001). FBB group reported significantly higher satisfaction with anesthesia quality compared to the LIA group (6.49 ± 0.64 vs 4.05 ± 1.05; p < 0.001). No complications were recognized in either group.

Conclusions: Ultrasound-guided genitofemoral nerve blocks offered better acute pain relief and higher patient satisfaction than LIA during femoral arterial access gain and closure.

Clinical relevance statement: In this prospective randomized controlled trial, ultrasound-guided genitofemoral nerve blocks offered better acute pain relief than local infiltration anesthesia, resulting in enhanced patient satisfaction.

Key points: • FBB provided better pain relief during access gain and closure than LIA. • FBB offered higher patient satisfaction with the quality of anesthesia than LIA. • No anesthesia-related or access site complications were recognized in either treatment group.

Keywords: Femoral artery; Interventional ultrasonography; Nerve block; Therapeutic chemoembolization; Vascular closure devices.

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