Veterinary anaesthesia and analgesia
-
Randomized Controlled Trial
Thiopental and halothane dose-sparing effects of magnesium sulphate in dogs.
To evaluate the effect of pre- and intraoperatively administered magnesium sulphate (MgSO(4)) on the induction dose of thiopental and of halothane for maintenance of anaesthesia in dogs undergoing ovariohysterectomy (OHE). ⋯ Magnesium sulphate administration reduced the induction dose of thiopental and ET(hal) concentration for maintenance of anaesthesia in dogs undergoing OHE. Observed side effects were nausea and vomiting.
-
Comparative Study
Comparison of arterial and central venous cannulations using ultrasound guidance in pigs.
To evaluate the feasibility of ultrasound guided vascular access in pigs by comparing central venous and arterial cannulation techniques. ⋯ In anaesthetized pigs undergoing instrumentation for biomedical research, ultrasound-guided vascular access is a simple and rapid alternative to surgical cut-down. In veterinary anaesthesia, the technique might be useful in sedated or anesthetized pigs in which arterial or central venous access is required.
-
Tidal expiratory flow limitation (EFL) has been reported in humans with acute lung injury (ALI) and assumed to be associated with small airway closure. Detection of EFL is important because by selecting positive end-expiratory pressure at such a level that EFL is no longer present in the tidal breath, the repeated opening and closure of small airways can be prevented. The objective of this study was to investigate the occurrence of EFL in two experimental models of ALI. ⋯ Tidal EFL was not detected in experimental ALI. This finding casts some doubt about the usefulness of some experimental models of ALI to mimic some reported findings in human ALI.
-
Randomized Controlled Trial
Dexmedetomidine continuous rate infusion during isoflurane anaesthesia in canine surgical patients.
To determine the effects of three rates of dexmedetomidine (DMED) constant rate infusion (CRI) on overall tissue perfusion, isoflurane (ISO) requirements, haemodynamics and quality of recovery in canine surgical patients. ⋯ Dexmedetomidine CRI is a reliable and valuable adjunct to ISO anaesthesia in maintaining surgical anaesthesia in ASA I-II dogs. Data reported indicate adequate overall tissue perfusion and a low ISO requirement while enabling a smooth and rapid recovery following ATI. The DMED CRI of 1 microg kg(-1) hour(-1) following a loading dose of 5 microg kg(-1) produced the most favourable results.
-
To determine cardiovascular responses to administration of butorphanol in isoflurane-anesthetized horses. ⋯ The results presented here confirm that butorphanol can be administered to horses during isoflurane anesthesia without adverse effects on HR and arterial blood pressure. The results imply that butorphanol can deepen the plane of anesthesia and obtund sympathetic stimulation from a surgical procedure.