Description of different ultrasound guided transversus abdominis plane block in pig cadavers – A pilot study

Michielsen, Anneleen; Rodrigo-Mocholí, Diego; Cornillie, Pieter; Gasthuys, Frank; Schauvliege, Stijn

doi:10.1016/j.vaa.2020.10.012

Cited by 7 publications

(11 citation statements)

References 16 publications

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“…Locoregional anaesthesia has been proven to decrease postsurgical opioid consumption in dogs undergoing tibial plateau levelling osteotomy 24 . Therefore, interest in locoregional anaesthesia in other species is growing 25–27 . Locoregional anaesthesia for the hindlimb has been reported in alpacas, where two electrostimulation‐guided sciatic and femoral nerve blocks were performed for distal femur or stifle surgery 11,12 .…”

Section: Discussionmentioning

confidence: 99%

“…24 Therefore, interest in locoregional anaesthesia in other species is growing. [25][26][27] Locoregional anaesthesia for the hindlimb has been reported in alpacas, where two electrostimulation-guided sciatic and femoral nerve blocks were performed for distal femur or stifle surgery. 11,12 In both cases, boluses of morphine 0.1 mg/kg were necessary during the surgery due to cardiovascular increments during maintenance.…”

Section: Discussionmentioning

confidence: 99%

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Ultrasound‐guided sciatic nerve block in two alpacas (Vicugna pacos) as part of an anaesthesia plan for hindlimb fractures

Ruíz‐López

Felisberto

Haardt

et al. 2022

Vet Record Case Reports

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The present case report describes the management of two alpacas undergoing repair of a metatarsal and a distal tibial fracture, respectively. Both animals received ketamine and medetomidine intramuscularly, resulting in deep sedation. Endotracheal intubation was performed, and general anaesthesia was maintained with sevoflurane. An in‐plane ultrasound‐guided sciatic nerve block was performed at the level of the mid‐thigh with bupivacaine 0.5% before surgery as part of the analgesic treatment. Meloxicam was administered. Heart rate, arterial blood pressure and respiratory rate were stable during the surgery, despite the use of a low end‐tidal sevoflurane concentration. No opioids were required intraoperatively. Duration of the anaesthesia was 205 and 255 minutes, respectively. Extubation was performed 12 and 6 minutes after discontinuing sevoflurane administration, respectively. In both cases, regional anaesthesia of the sciatic nerve improved the intraoperative management of alpacas that required surgical treatment for fractures.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Ultrasound‐guided sciatic nerve block in two alpacas (Vicugna pacos) as part of an anaesthesia plan for hindlimb fractures

Ruíz‐López

Felisberto

Haardt

et al. 2022

Vet Record Case Reports

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“…The use of defrosted cadavers may also affect image quality, which, due to the small size of the animals being used, may be particularly significant in this study. 20…”

Section: Discussionmentioning

confidence: 99%

“…This may lead to a larger area of spread than may be expected clinically using common local anaesthetic drugs. The use of defrosted cadavers may also affect image quality, which due to the small size of the animals being used, may be particularly significant in this study 20 .…”

Section: One Point Blockmentioning

confidence: 99%

Transversus abdominis plane block in rats: Preliminary cadaveric studies

2022

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The transversus abdominis plane (TAP) block is an ultrasound guided regional anaesthetic technique used to provide analgesia to the abdominal wall. Research in humans and cats has demonstrated that TAP blocks reduce pain and post-operative opioid requirements after abdominal surgery. To date TAP blocks have not been described in rats. The optimal technique to employ when performing TAP blocks is controversial with single point injection techniques failing to reliably provide adequate coverage of the cranial abdominal wall. It has been suggested that performing a two point injection may provide more reliable coverage of the cranial abdominal wall. The objective of this study was to determine the feasibility of performing ultrasound guided TAP blocks in rat cadavers and to evaluate whether performing a two point technique provides greater spread of injectate than a one point technique when administering the same total volume of methylene blue solution. Twenty-three, four-month-old, female Sprague Dawley rat cadavers weighing 506 ± 78 g were used. TAP blocks were performed using a total of 1 ml/kg of methylene blue solution. Overall success rates for injections were 21.7% (13.6–32.8%). Single point injection area of spread was 87.8 ± 32 mm2 compared with 102.4 ± 17 mm2 for the two point injection technique. Due to the low success rate the use of TAP blocks using the current technique cannot be recommended. Two point injection technique appears to provide greater spread; however, additional data is required to draw meaningful conclusions.

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“…It has been shown that the last 4 thoracic (T10-T14) and upper lumbar (L1-L2) spinal nerves contribute to periumbilical dermatomal innervation in pigs [26,27] and up to 3 spinal nerves can contribute one dermatomal segment in pigs [28]. Considering the above-mentioned literature, T10 to L2 spinal nerves can be considered as the contributors of the dermatomes of abdomen only con guration used in the present study protocol [29,30].…”

Section: Mechanism Of Actionmentioning

confidence: 99%

Decreasing the blood flow of non-compressible intra-abdominal organs with non-invasive transcutaneous electrical stimulation

Çakmak¹,

Khwaounjoo

Pangilinan

et al. 2022

Preprint

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Non-invasive neuromodulation of non-compressible internal organs has significant potential for internal organ bleeding and blood-shift in aero/space medicine. The present study aims to investigate the potential influences of the non-invasive transcutaneous electrical nerve stimulation (TENS) on multiple non-compressible internal organs’ blood flow. Porcine animal model (n = 8) was randomized for a total of 48 neuromodulation sessions with two different TENS stimulation frequencies (80Hz, 10Hz) and a placebo stimulation. A combination of two different electrode configurations (Abdominal or Abdominal and Hind Limb) were also performed. Intraarterial blood flow measurements were taken during pre and post-stimulation periods at the left renal artery, common hepatic artery, and left coronary artery. Intracranial, and extracranial arterial blood flows were also assessed with digital subtraction angiography. TENS with abdominal-only electrode configurations at 10hz demonstrated significant reductions in average peak blood flow velocity (APV) of the common hepatic artery (p = 0.0233) and renal arteries (p = 0.0493). Arterial pressures (p = 0.0221) were also significantly lower when renal APV was reduced. The outcome of the present study emphasises the potential use of TENS in decreasing the blood flow of non-compressible internal organs when the correct combination of electrodes configuration and frequency is used.

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Description of different ultrasound guided transversus abdominis plane block in pig cadavers – A pilot study

Cited by 7 publications

References 16 publications

Ultrasound‐guided sciatic nerve block in two alpacas (Vicugna pacos) as part of an anaesthesia plan for hindlimb fractures

Ultrasound‐guided sciatic nerve block in two alpacas (Vicugna pacos) as part of an anaesthesia plan for hindlimb fractures

Transversus abdominis plane block in rats: Preliminary cadaveric studies

Decreasing the blood flow of non-compressible intra-abdominal organs with non-invasive transcutaneous electrical stimulation

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