Ultrasound-assisted periconal ocular blockade in rabbits

Najman, Ilana Esquenazi; Ferreira, José Pedro; Abimussi, Caio José Xavier; Floriano, Beatriz Perez; Meneghetti, Thais M.; Oliva, V. N. L. S.; Nascimento, Paulo do

doi:10.1111/vaa.12237

Cited by 15 publications

(9 citation statements)

References 25 publications

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“…rabbits (CANCRS) (adapted to lop-eared rabbits) (no pain [0-5], discomfort [6][7][8][9][10][11], moderate pain [12][13][14][15][16][17] and severe pain [18][19][20][21][22][23][24]), 17 the animal was showing signs of discomfort, with a score of 9/22 (Table 1: T 0 and Figure 1: T 0 ). The physical status of the rabbit was classified as grade II per the American Society of Anesthesiologists classification.…”

Section: Learning Points/take Home Messagesmentioning

confidence: 99%

“…In addition to achieving a faster onset of block with an increased duration, US-guided locoregional techniques also decrease the quantity of LA solution required to obtain an adequate block, and decrease the probability of adverse events, such as nerve and vascular puncture. [11][12][13][14] Moreover, using US-guided locoregional techniques allows identification of sensory nerves for which electrical stimulation would not lead to an effector muscle contraction. 7 Similarly to dogs, the saphenous nerve in rabbits is the terminal sensory branch of the femoral nerve providing innervation of the ipsilateral lower leg, ankle and forefoot, and it has a similar anatomical pathway to dogs.…”

Section: Introductionmentioning

confidence: 99%

“…With the introduction of ultrasound (US) technology and the expansion of the sonographic anatomical knowledge, the accuracy of localising target nerves is improving. In addition to achieving a faster onset of block with an increased duration, US‐guided locoregional techniques also decrease the quantity of LA solution required to obtain an adequate block, and decrease the probability of adverse events, such as nerve and vascular puncture 11–14 …”

Section: Introductionmentioning

confidence: 99%

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Ultrasound‐ and nerve stimulation‐guided sciatic and saphenous nerve blocks in a pet rabbit (Oryctolagus cuniculus) undergoing calcaneal fracture repair

Felisberto

Flaherty

Tayari

2022

Vet Record Case Reports

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The beneficial effects of performing regional anaesthesia techniques as part of a pre‐emptive analgesic strategy are to improve perioperative analgesia and reduce opioid and general anaesthetic drug requirements. In prey species, an early recovery of voluntary motor function, especially after a regional anaesthesia, is essential for the animal's health and welfare. To reduce motor paralysis, a low volume and concentration of local anaesthetic should be administered close to the targeted nerve. This is the first report of an ultrasound (14 MHz linear probe)‐ and nerve stimulation (0.2 mA; 0.3 second; 2 Hz)‐guided saphenous and sciatic nerve blocks using bupivacaine (0.125%; 0.2 mL/kg per nerve) in a rabbit. Drug consumption, physiological response to surgery and postoperative pain scoring were used to determine block success. The ultrasound‐ and nerve stimulation‐guided sciatic and saphenous nerve blocks could be recommended as part of multimodal pain management in rabbits undergoing appropriate pelvic limb orthopaedic surgeries.

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Section: Learning Points/take Home Messagesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Ultrasound‐ and nerve stimulation‐guided sciatic and saphenous nerve blocks in a pet rabbit (Oryctolagus cuniculus) undergoing calcaneal fracture repair

Felisberto

Flaherty

Tayari

2022

Vet Record Case Reports

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“…Najman et al conducted a prospective study of ultrasound-assisted periconal ocular block in a rabbit model. 45 The periconal technique, first described by Davis and Mandel in 1986, is a modification of the peribulbar block in which a longer needle is advanced behind the eye but remains outside of the extraocular muscle cone. 46 In all 18 rabbits, the needle and the spread of local anesthetic were satisfactorily visualized without complication.…”

Section: Ultrasound-guided Eye Blocksmentioning

confidence: 99%

Ophthalmic regional blocks: management, challenges, and solutions

Palte¹

2015

LRA

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In the past decade ophthalmic anesthesia has witnessed a major transformation. The sun has set on the landscape of ophthalmic procedures performed under general anesthesia at in-hospital settings. In its place a new dawn has ushered in the panorama of eye surgeries conducted under regional and topical anesthesia at specialty eye care centers. The impact of the burgeoning geriatric population is that an increasing number of elderly patients will present for eye surgery. In order to accommodate increased patient volumes and simultaneously satisfy administrative initiatives directed at economic frugality, administrators will seek assistance from anesthesia providers in adopting measures that enhance operating room efficiency. The performance of eye blocks in a holding suite meets many of these objectives. Unfortunately, most practicing anesthesiologists resist performing ophthalmic regional blocks because they lack formal training. In future, anesthesiologists will need to block eyes and manage common medical conditions because economic pressures will eliminate routine preoperative testing. This review addresses a variety of topical issues in ophthalmic anesthesia with special emphasis on cannula and needle-based blocks and the new-generation antithrombotic agents. In a constantly evolving arena, the sub-Tenon’s block has gained popularity while the deep angulated intraconal (retrobulbar) block has been largely superseded by the shallower extraconal (peribulbar) approach. Improvements in surgical technique have also impacted anesthetic practice. For example, phacoemulsification techniques facilitate the conduct of cataract surgery under topical anesthesia, and suture-free vitrectomy ports may cause venous air embolism during air/fluid exchange. Hyaluronidase is a useful adjuvant because it promotes local anesthetic diffusion and hastens block onset time but it is allergenic. Ultrasound-guided eye blocks afford real-time visualization of needle position and local anesthetic spread. An advantage of sonic guidance is that it may eliminate the hazard of globe perforation by identifying abnormal anatomy, such as staphyloma.

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“…15 Rabbit eye anatomy is not dissimilar to human eye anatomy, therefore rabbits are often used as human models; a laboratory study has described an ultrasound-guided periconal block in rabbits. 16 However, clinical studies in pet rabbits are limited. This case report describes the clinical use of a PBB in a pet rabbit, which has not previously been reported in the literature.…”

Section: Introductionmentioning

confidence: 99%

Peribulbar block in a rabbit presenting for enucleation

Ryan¹,

Dutton

Gurney³

2022

Vet Record Case Reports

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This paper discusses the use of a peribulbar local block with bupivacaine in a rabbit presenting for enucleation and represents an alternative locoregional technique to a retrobulbar block, which is challenging to perform in rabbits due to the presence of a venous sinus behind the globe. A peribulbar block is comparatively easy to perform, and it provided excellent perioperative and postoperative analgesia in the case reported. Clinicians should consider a peribulbar block as part of a multimodal anaesthetic plan where indicated.

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Ultrasound-assisted periconal ocular blockade in rabbits

Cited by 15 publications

References 25 publications

Ultrasound‐ and nerve stimulation‐guided sciatic and saphenous nerve blocks in a pet rabbit (Oryctolagus cuniculus) undergoing calcaneal fracture repair

Ultrasound‐ and nerve stimulation‐guided sciatic and saphenous nerve blocks in a pet rabbit (Oryctolagus cuniculus) undergoing calcaneal fracture repair

Ophthalmic regional blocks: management, challenges, and solutions

Peribulbar block in a rabbit presenting for enucleation

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