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Irving W, Annear M, Whittaker C, Caruso K, Reynolds B, McCarthy P, Smith J. Effect of dexmedetomidine added to retrobulbar blockade with lignocaine and bupivacaine in dogs undergoing enucleation surgery. Vet Ophthalmol 2024; 27:148-157. [PMID: 37418492 DOI: 10.1111/vop.13130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2023] [Revised: 06/12/2023] [Accepted: 06/29/2023] [Indexed: 07/09/2023]
Abstract
OBJECTIVE To investigate the effect of the addition of dexmedetomidine (BLD) to retrobulbar blockade with combined lignocaine and bupivacaine on nociception. ANIMALS A total of 17 eyes from 15 dogs. METHODS Prospective, randomized, masked clinical comparison study. Dogs undergoing unilateral enucleation were randomly assigned into two groups; a retrobulbar administration of lignocaine and bupivacaine in a 1:2 volume ratio combined with either BLD or 0.9% saline (BLS). The total volume of the intraconal injection was calculated at 0.1 mL/cm cranial length. Intraoperative parameters were recorded: heart rate (HR), respiratory rate (RR), end-tidal CO2 (EtCO2 ) arterial blood pressure (BP), and inspired isoflurane concentration (ISOinsp). Pain scores, heart rate and RR were recorded postoperatively. RESULTS Dogs receiving BLD (n = 8) had significantly lower intraoperative RR (p = 0.007), and significantly lower ISOinsp (p = 0.037) than dogs in the BLS group (n = 9). Postoperatively heart rate was significantly lower in the BLD group at 1 min (p = 0.025) and 1 h (p = 0.022). There were no other significant differences in intraoperative or postoperative parameters, or in postoperative pain scores (p = 0.354). Dogs receiving BLD had a higher rate of anesthetic events of bradycardia and hypertension (p = 0.027). Analgesic rescue was not needed in either group. CONCLUSIONS The addition of BLD to retrobulbar anesthesia did not result in a detectable difference in pain scores relative to blockade with lignocaine and bupivacaine alone. Dogs receiving retrobulbar BLD had a significantly lower intraoperative RR and isoflurane requirement and an increased incidence of intraoperative bradycardia and hypertension.
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Affiliation(s)
- William Irving
- Eye Clinic for Animals, Sydney, New South Wales, Australia
| | - Matthew Annear
- Eye Clinic for Animals, Sydney, New South Wales, Australia
| | | | - Kelly Caruso
- Eye Clinic for Animals, Sydney, New South Wales, Australia
| | | | - Paul McCarthy
- Eye Clinic for Animals, Sydney, New South Wales, Australia
| | - Jeff Smith
- Eye Clinic for Animals, Sydney, New South Wales, Australia
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Alterisio MC, Micieli F, Valle GD, Chiavaccini L, Vesce G, Ciaramella P, Guccione J. Cardiovascular changes, laboratory findings and pain scores in calves undergoing ultrasonography-guided bilateral rectus sheath block before herniorrhaphy: a prospective randomized clinical trial. BMC Vet Res 2023; 19:191. [PMID: 37798785 PMCID: PMC10552199 DOI: 10.1186/s12917-023-03754-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Accepted: 09/26/2023] [Indexed: 10/07/2023] Open
Abstract
BACKGROUND The study aimed to assess the clinical utility of a multiparametric approach to measure the impact of bilateral ultrasound-guided rectus sheath blocks (RSB) on heart rate, serum cortisol concentrations, and pain in calves undergoing herniorraphy. Fourteen calves were randomly assigned to receive either the RSB (RSB group, n = 7, injected with 0.3 mL/kg of bupivacaine 0.25% and 0.15 µg/kg of dexmedetomidine per side) or a sham injection (CG group, n = 7, injected with an equivalent volume of sterile saline solution). Monitoring included (i) continuous Holter recording from 120 min pre-surgery to 120 min post-surgery; (ii) serum cortisol concentration (SC) at -150 min pre-surgery (baseline), induction time, skin incision, end of surgical procedure (EP-t), and then 30 min, 45 min, 60 min, 120 min, 360 min after recovery; (iii) UNESP-Botucatu pain evaluation at -150 min pre-surgery and 30 min, 45 min, 60 min, 120 min, 240 min, 360 min after recovery. RESULTS A significant difference in the heart rate was observed within the RSB group, in the time frame between 120 min to induction compared to the time frame between induction to EP-t period. The SC concentration was significantly higher in the CG at the skin incision. Calves in the RSB group recorded significantly lower pain scores at 45 min, 60 min, 120 and 240 min after recovery. CONCLUSIONS The study demonstrated that monitoring heart rate and serum cortisol concentrations effectively quantified the effects of RSB during surgery. At the same time, the UNESP-Botucatu pain scale identified effects post-surgery when the calves regained consciousness. Overall, ultrasound-guided RSB appeared to enhance the well-being of calves undergoing herniorrhaphy.
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Affiliation(s)
- Maria Chiara Alterisio
- Department of Veterinary Medicine and Animal Productions, University of Napoli Federico II, Via Delpino 1, Napoli, 80137, Italy
| | - Fabiana Micieli
- Department of Veterinary Medicine and Animal Productions, University of Napoli Federico II, Via Delpino 1, Napoli, 80137, Italy
| | - Giovanni Della Valle
- Department of Veterinary Medicine and Animal Productions, University of Napoli Federico II, Via Delpino 1, Napoli, 80137, Italy
| | - Ludovica Chiavaccini
- Department of Comparative, Anesthesiology and Pain Management, Department of Comparative, Diagnostic, and Population Medicine, College of Veterinary Medicine, University of Florida, 2015 SW 16th Ave, Gainesville, 32608, FL, USA
| | - Giancarlo Vesce
- Department of Veterinary Medicine and Animal Productions, University of Napoli Federico II, Via Delpino 1, Napoli, 80137, Italy
| | - Paolo Ciaramella
- Department of Veterinary Medicine and Animal Productions, University of Napoli Federico II, Via Delpino 1, Napoli, 80137, Italy.
| | - Jacopo Guccione
- Department of Veterinary Medicine and Animal Productions, University of Napoli Federico II, Via Delpino 1, Napoli, 80137, Italy
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Di Franco C, Evangelista F, Briganti A. Multiple uses of dexmedetomidine in small animals: a mini review. Front Vet Sci 2023; 10:1135124. [PMID: 37342619 PMCID: PMC10278766 DOI: 10.3389/fvets.2023.1135124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Accepted: 05/10/2023] [Indexed: 06/23/2023] Open
Abstract
Dexmedetomidine is an alpha-2 adrenergic agonist, which use had an exponential increase in human and veterinary medicine in the last 10 years. The aim of this mini review is to summarize the various uses of dexmedetomidine underlining its new applications and capabilities in the small animals' clinical activity. While this drug was born as sedative in veterinary medicine, some studies demonstrated to be effective as an analgesic both in single administration and in continuous infusion. Recent studies have also shown the role of dexmedetomidine as an adjuvant during locoregional anesthesia, increasing the duration of the sensitive block and consequently decreasing the demand for systemic analgesics. The various analgesic properties make dexmedetomidine an interesting drug for opioid-free analgesia. Some studies highlighted a potential neuroprotective, cardioprotective and vasculoprotective role of dexmedetomidine, thus conferring it a place in critical care medicine, such as trauma and septic patients. Dexmedetomidine has demonstrated to be a multitasking molecule and it is ready to face new challenges.
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Affiliation(s)
- Chiara Di Franco
- Department of Veterinary Sciences, University of Pisa, Pisa, Italy
| | - Flavia Evangelista
- Department of Veterinary Sciences, University of Pisa, Pisa, Italy
- Vet Hospital H24, Firenze, Italy
| | - Angela Briganti
- Department of Veterinary Sciences, University of Pisa, Pisa, Italy
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Chen Z, Liu Z, Feng C, Jin Y, Zhao X. Dexmedetomidine as an Adjuvant in Peripheral Nerve Block. Drug Des Devel Ther 2023; 17:1463-1484. [PMID: 37220544 PMCID: PMC10200118 DOI: 10.2147/dddt.s405294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 05/05/2023] [Indexed: 05/25/2023] Open
Abstract
Peripheral nerve block technology is important to balanced anesthesia technology. It can effectively reduce opioid usage. It is the key to enhance clinical rehabilitation as an important part of the multimodal analgesia scheme. The emergence of ultrasound technology has accelerated peripheral nerve block technology development. It can directly observe the nerve shape, surrounding tissue, and diffusion path of drugs. It can also reduce the dosage of local anesthetics by improving positioning accuracy while enhancing the block's efficacy. Dexmedetomidine is a highly selective drug α2-adrenergic receptor agonist. Dexmedetomidine has the characteristics of sedation, analgesia, anti-anxiety, inhibition of sympathetic activity, mild respiratory inhibition, and stable hemodynamics. Numerous studies have revealed that dexmedetomidine in peripheral nerve blocks can shorten the onset time of anesthesia and prolong the time of sensory and motor nerve blocks. Although dexmedetomidine was approved by the European Drug Administration for sedation and analgesia in 2017, it has not yet been approved by the US Food and Drug Administration (FDA). It is used as a non-label drug as an adjuvant. Therefore, the risk-benefit ratio must be evaluated when using these drugs as adjuvants. This review explains the pharmacology and mechanism of dexmedetomidine, the effect of dexmedetomidine on various peripheral nerve block as an adjuvant, and compare it with other types of adjuvants. We summarized and reviewed the application progress of dexmedetomidine as an adjuvant in nerve block and look forward to its future research direction.
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Affiliation(s)
- Zheping Chen
- Department of Anesthesiology, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250012, People’s Republic of China
| | - Zhenzhen Liu
- Department of Anesthesiology, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250012, People’s Republic of China
| | - Chang Feng
- Department of Anesthesiology, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250012, People’s Republic of China
| | - Yanwu Jin
- Department of Anesthesiology, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250012, People’s Republic of China
| | - Xin Zhao
- Department of Anesthesiology, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250012, People’s Republic of China
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Parker LA, Bukoski AD, Zelaya-Nunez C, Dodam JR, Varner KM, Torres BT. Pelvic limb anesthesia and analgesia in dogs undergoing tibial plateau leveling osteotomy (TPLO): A survey of board-certified anesthesiologists. Vet Surg 2023; 52:521-530. [PMID: 36881970 DOI: 10.1111/vsu.13947] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 11/30/2022] [Accepted: 02/15/2023] [Indexed: 03/09/2023]
Abstract
OBJECTIVE To report the locoregional anesthesia and analgesia preferences of veterinary anesthesiologists for use in dogs undergoing a TPLO and determine any association with specialty college, time from board-certification, or employment sector. STUDY DESIGN Cross sectional study. SAMPLE POPULATION Diplomates of the American (ACVAA) and European (ECVAA) Colleges of Veterinary Anesthesia and Analgesia. METHODS An electronic survey was distributed to diplomates and responses were used to determine associations between preferred methods. RESULTS The survey response rate was 28% (141/500) with 69% (97/141) of ACVAA diplomates and 31% of diplomates with ECVAA (44/141) certification. Peripheral nerve block (PNB) was preferred by 79% (111/141) of all diplomates, lumbosacral epidural (LE) by 21% (29/141), and peri-incisional infiltration (PI) by <1% (1/141). There was no association (p = .283) with specialty college. There was an association (p < .001) with time from board-certification with increased preference for LE when >10-years from certification and PI preferred by only those board-certified >20-years ago. There was an association with employment sector (p = .003) with more academic diplomates preferring LE. Anesthesiologists reported that treatment decisions were affected by various factors including time pressure and surgeon influence. CONCLUSION Diplomates of ACVAA and ECVAA prefer PNB as the locoregional method of pelvic limb anesthesia in dogs undergoing TPLO. A greater percentage of newer and private practice diplomates prefer PNB while a larger percentage of senior and academic diplomates prefer LE. Decision making is multifactorial and includes perceived time pressure and surgeon influence. CLINICAL SIGNIFICANCE Veterinary anesthesiologists prefer and frequently use PNB in dogs undergoing TPLO and surgeon influence may affect their chosen treatment.
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Affiliation(s)
- Lindsay A Parker
- Department of Veterinary Medicine and Surgery, College of Veterinary Medicine, University of Missouri, Columbia, Missouri, USA
| | - Alex D Bukoski
- Department of Veterinary Medicine and Surgery, College of Veterinary Medicine, University of Missouri, Columbia, Missouri, USA
| | - Cristopher Zelaya-Nunez
- Department of Veterinary Medicine and Surgery, College of Veterinary Medicine, University of Missouri, Columbia, Missouri, USA
| | - John R Dodam
- Department of Veterinary Medicine and Surgery, College of Veterinary Medicine, University of Missouri, Columbia, Missouri, USA
| | - Kelley M Varner
- Department of Veterinary Medicine and Surgery, College of Veterinary Medicine, University of Missouri, Columbia, Missouri, USA
| | - Bryan T Torres
- Department of Veterinary Medicine and Surgery, College of Veterinary Medicine, University of Missouri, Columbia, Missouri, USA
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Micieli F, Guccione J, Della Valle G, Alterisio MC, Ciaramella P, Vesce G, Chiavaccini L. Clinical efficacy of an ultrasound-guided bilateral rectus sheath block for umbilical hernia repair in calves: A prospective randomized trial. FRONTIERS IN PAIN RESEARCH 2023; 4:1051504. [PMID: 36860331 PMCID: PMC9969087 DOI: 10.3389/fpain.2023.1051504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 01/13/2023] [Indexed: 02/15/2023] Open
Abstract
Introduction Surgical umbilical hernia repair is a frequent procedure in newborn calves, requiring mandatory pain management. This study aimed to develop an ultrasound-guided rectus sheath block (RSB) and to evaluate its clinical efficacy in calves undergoing umbilical herniorrhaphy under general field anesthesia. Methods Gross and ultrasound anatomy of the ventral abdomen and the diffusion of a new methylene blue solution after injection within the rectus sheath were described in seven fresh calf cadavers. Then, fourteen calves undergoing elective herniorrhaphy were randomly assigned to receive either bilateral ultrasound-guided RSB with 0.3 mL/kg of bupivacaine 0.25% and 0.15 µg/kg of dexmedetomidine or 0.3 mL/kg of 0.9% NaCl (control). Intraoperative data included cardiopulmonary variables and anesthetic requirements. Postoperative data included pain scores, sedation scores and peri-incisional mechanical threshold assessed by force algometry at specific time points after anesthetic recovery. Treatments were compared using Wilcoxon rank-sum, Student's t-test, and Cox proportional hazard model as appropriate. Mixed effect linear models on rank, with random effect calf; fixed effects time, treatment, and their interaction were used to compare pain scores and mechanical thresholds over time. Significance was set at p = 0.05. Results and Discussion Calves receiving RSB recorded lower pain scores between 45 - 120 minutes (p < 0.05) and at 240 min after recovery (p = 0.02). And they recorded higher mechanical thresholds between 45 and 120 min after surgery (p < 0.05). Ultrasound-guided RSB provided effective perioperative analgesia in calves undergoing herniorrhaphy under field conditions.
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Affiliation(s)
- Fabiana Micieli
- Department of Veterinary Medicine and Animal Productions, University of Napoli Federico II, Napoli, Italy
| | - Jacopo Guccione
- Department of Veterinary Medicine and Animal Productions, University of Napoli Federico II, Napoli, Italy
| | - Giovanni Della Valle
- Department of Veterinary Medicine and Animal Productions, University of Napoli Federico II, Napoli, Italy
| | - Maria Chiara Alterisio
- Department of Veterinary Medicine and Animal Productions, University of Napoli Federico II, Napoli, Italy
| | - Paolo Ciaramella
- Department of Veterinary Medicine and Animal Productions, University of Napoli Federico II, Napoli, Italy
| | - Giancarlo Vesce
- Department of Veterinary Medicine and Animal Productions, University of Napoli Federico II, Napoli, Italy
| | - Ludovica Chiavaccini
- Department of Comparative, Diagnostic, and Population Medicine, College of Veterinary Medicine, University of Florida, Gainesville, FL, United States,Correspondence: Ludovica Chiavaccini
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Di Bella C, Pennasilico L, Botto R, Salvaggio A, Galosi M, Staffieri F, Piccionello AP. Efficacy of dexmedetomidine as adjuvant to bupivacaine in femoral-sciatic nerve blocks in dogs undergoing tibial plateau levelling osteotomy (TPLO). Res Vet Sci 2023; 154:124-131. [PMID: 36584520 DOI: 10.1016/j.rvsc.2022.12.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Revised: 12/18/2022] [Accepted: 12/24/2022] [Indexed: 12/28/2022]
Abstract
The aim of this randomized, prospective clinical study was to evaluate the efficacy of dexmedetomidine combined with bupivacaine on sciatic and femoral nerve blocks in dogs. Thirty dogs were selected for elective unilateral tibial plateau levelling osteotomy, and each subject was assigned randomly to receive perineural bupivacaine 0.5% (0.1 mL/kg) and intramuscular dexmedetomidine (0.5 μg/kg) in the BDs group, perineural bupivacaine 0.5% (0.1 mL/kg) plus dexmedetomidine (0.5 μg/kg) in the BDloc group, and perineural bupivacaine 0.5% (0.1 mL/kg) plus intramuscular administration of saline solution the in Bupi group. Nerve blocks were guided by electrolocation. The main intraoperative parameters were registered 10 min before the start of surgery (BASE) and during the skin incision (SKIN), the osteotomy (BONE) and the suture (SUTURE). At 2, 4, 6, 8, 10, 15, 20 and 24 h after blocks, the Glasgow Composite Pain scale (GPCs) was used to identify the degree of pain during the postoperative period. Patients with scores ≥5/20 received rescue analgesia and were excluded. Furthermore, heart rate, mean arterial pressure, footstep capacity, reaction to wound touch and femoral and sciatic skin sensitivity were registered. Parametric data were compared at each time point of the study with the one-way ANOVA for repeated measures and Fisher's test for yes/no variables analysis (p < 0.05). No subject required intraoperative rescue analgesia. In BDloc group, the GCPs score was <5/20 for all dogs at all times of the study, and 70% of dogs did not need systemic analgesia. In the Bupi and BDs groups, 100% of subjects achieved a score ≥ 5/20 between 8 and 10 h after the blocks, and 100% of subjects showed femoral and sciatic skin sensitivity and required rescue analgesia within 10 h. Our results showed that the addition of dexmedetomidine as an adjuvant to bupivacaine in SF blocks may prolong the sensory block and ensure sufficient analgesia for up to 24 h in dogs undergoing TPLO surgery.
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Affiliation(s)
- Caterina Di Bella
- School of Bioscience and Veterinary Medicine, University of Camerino, Camerino, Italy.
| | - Luca Pennasilico
- School of Bioscience and Veterinary Medicine, University of Camerino, Camerino, Italy.
| | - Riccardo Botto
- School of Bioscience and Veterinary Medicine, University of Camerino, Camerino, Italy.
| | - Alberto Salvaggio
- School of Bioscience and Veterinary Medicine, University of Camerino, Camerino, Italy
| | - Margherita Galosi
- School of Bioscience and Veterinary Medicine, University of Camerino, Camerino, Italy.
| | - Francesco Staffieri
- Section of Veterinary Clinics and Animal Production, Department of Emergency and Organ Transplantations, University of Bari, Bari, Italy.
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Ferrero C, Klonner ME, Verdier N, Bradbrook C. Ultrasound‐guided saphenous and sciatic nerve block as part of multimodal pain management in a goat undergoing tibial fracture repair. VETERINARY RECORD CASE REPORTS 2022. [DOI: 10.1002/vrc2.270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Marolf V, Selz J, Picavet P, Spadavecchia C, Tutunaru A, Sandersen C. Effects of perineural dexmedetomidine combined with ropivacaine on postoperative methadone requirements in dogs after tibial plateau levelling osteotomy: a two-centre study. Vet Anaesth Analg 2022; 49:313-322. [DOI: 10.1016/j.vaa.2022.01.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 01/17/2022] [Accepted: 01/21/2022] [Indexed: 10/19/2022]
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