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Bojan D. Toholj, Velibor D. Kujača, Milenko R. Stevančević, Jovan M. Spasojević and Ozren B. Smolec

Abstract

Equine veterinarians frequently anesthetize horses. In majority of cases performing short-term anesthesia (duration, 20 minutes). But there is substantial need for long term anesthesia. The aim of this work is to present our experience with a long term and short term total intravenous anesthesia in horses. In this paper we are presenting results of anesthesia monitoring of a horse undergoing surgical remove of an abdominal testis (complete abdominal cryptorchid). Sedation of the horsewas conducted with xylazine, 1.0 mg/kg, iv, and midazolam 0.06 mg/kg, iv. The total anesthesia was induced using a combination of ketamine 2.2mg/kg/iv, and midazolam 0.1 mg/kg/iv. After induction the horse was restrained and anesthesia was maintained with continuous intravenous drip of a combination of drugs mixed in infusion bottle with midazolam (0.002 mg/kg/min), ketamine (0.03 mg/kg/min), and xylazine (0.016 mg/kg/min). Additional ketamine (0.03 mg/kg) and midazolam 0.03 mg/kg/iv was administered if the horse moved its head or limbs during the procedure. The duration of anesthesia was 90 minutes. During this time cardiopulmonary parameters and reflexes were monitored continuously.The recovery of anesthesia was 30 minutes and horse stood on the first attempt 40 minutes. Midazolam, ketamine, and xylazine in combination produced TIVA in this horse and can be used for short term, middle term, and longer lasting surgical procedures in the field.

Open access

I. Capík and O. Nagy

Abstract

The objective of this study was to compare in clinical patients the analgesic effect of the centrally acting analgesics tramadol and buprenorphine in continuous intravenous anaesthesia (TIVA) with propofol. Twenty dogs undergoing prophylactic dental treatment, aged 2−7 years, weighing 6−27 kg, were included in ASA I. and II. groups. Two groups of dogs received intravenous (IV) administration of tramadol hydrochloride (2 mg.kg−1) or buprenorphine hydrochloride (0.2 mg.kg−1) 30 minutes prior to sedation, provided by midazolam hydrochloride (0.3 mg.kg−1) and xylazine hydrochloride (0.5 mg.kg-1) IV. General anaesthesia was induced by propofol (2 mg.kg−1) and maintained by a 120 minutes propofol infusion (0.2 mg.kg−1min−1). Oscilometric arterial blood pressure (ABP) measured in mm Hg, heart rate (HR), respiratory rate (RR), SAT, body temperature (BT) and pain reaction elicited by haemostat forceps pressure at the digit were recorded in ten minute intervals. The tramadol group of dogs showed significantly better parameters of blood pressure (P < 0.001), lower tendency to bradycardia (P < 0.05), and better respiratory rate (P < 0.001) without negative influence to oxygen saturation. Statistically better analgesia was achieved in the tramadol group (P < 0.001). Tramadol, in comparison with buprenorphine provided significantly better results with respect to the degree of analgesia, as well as the tendency of complications arising during anaesthesia.

Open access

Adina Hadade, Daniela Ionescu, Teodora Mocan, Alexandru Necula and Victor Cristea

Abstract

Introduction: It has been reported that as compared with total intravenous anesthesia (TIVA), inhalation anesthesia is increasing the postoperative level of proinflammatory interleukins.

The aim of the study is to investigate if there is an in-vivo relationship between proinflammatory cytokines, Interleukin- 32 (IL-32) and Tumour necrosis factor - α (TNF- α), in patients undergoing laparoscopic cholecystectomies with two different anesthetic techniques, TIVA or inhalation anesthesia.

Material and Methods: Twenty two consecutive patients undergoing laparoscopic cholecystectomies were prospectively randomized into two groups: Group 1: TIVA with target-controlled infusion (TIVA-TCI) (n=11) and Group 2: isoflurane anesthesia (ISO) (n=11). IL-32 and TNF-α were determined before the induction of anesthesia (T1), before incision (T2) and at 2h (T3) and 24h (T4) postoperatively. Our primary outcome was to compare plasma levels of IL-32 and TNF- α concentrations (expressed as area-under-the-curve) over 24 hours between study groups. Our secondary outcome was to establish whether there is a correlation between plasma levels of IL-32 and of TNF-α at each time point between the two groups.

Results: Area-under-the-curve (AUC) of IL-32 plasma concentration was 7.53 in Group 1 (TIVA) versus 3.80 in Group 2 (ISO), p= 1. For TNF-α, AUC of plasma concentration was 733.9 in Group 1 (TIVA) and 668.7 in Group 2 (ISO), p= 0.066. There were no significant differences in plasma concentrations of both IL-32 and TNF- α between the groups.

Conclusions: IL-32 expression in response to minor surgery is very low. There were no significant difference between plasma levels ofTNF- α and IL-32 after TIVA versus inhalation anesthesia during the first 24 hours postoperatively. Further studies are needed on larger groups to investigate whether there can be a correlation between these interleukins after 2 different anesthetic techniques and the impact of this correlation on postoperative outcome.