Document Detail


Validation of the acute electroencephalographic responses of calves to noxious stimulus with scoop dehorning.
MedLine Citation:
PMID:  17676078     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
AIM: To validate use of the electroencephalogram (EEG) and a minimal anaesthesia model for assessment of noxious sensory input caused by scoop dehorning of calves. METHODS: Twenty Friesian heifers weighing 125-178 kg were maintained under light general anaesthesia using halothane and an established protocol (minimal anaesthesia model). They were then dehorned using a scoop dehorner either with (DH+LA) or without (DH) a lignocaine ring block, and changes in the EEG and electrocardiogram (ECG) recorded. Median frequency (F50), 95% spectral edge frequency (F95) and total power (Ptot) were derived from the EEG data. RESULTS: There were significant increases in the F50 (p<0.01) and F95 (p<0.01), and a decrease in Ptot (p<0.01) following dehorning in the DH group, but there were no changes in the DH+LA group. Transient bradycardia in the first 75 sec following dehorning was recorded in the DH group compared with both pre-treatment values in the same group and with the DH+LA group (p<0.001). Tachycardia was evident by 15 min after dehorning in the DH but not the DH+LA group. CONCLUSIONS: The results validate use of the EEG and a minimal anaesthesia model for assessment of noxious sensory inputs in cattle.
Authors:
T J Gibson; C B Johnson; K J Stafford; S L Mitchinson; D J Mellor
Related Documents :
2913248 - Incidence of oxygen desaturation during oral surgery outpatient procedures.
17704088 - Simulation as an additional tool for investigating the performance of standard operatin...
3354888 - Conscious state comparisons of the effects of the inhalation anesthetics and diltiazem,...
11576048 - Effects of remifentanil/propofol in comparison with isoflurane on dynamic cerebrovascul...
24880828 - Endothelial progenitor cell mobilization by preoperative exercise: a bone marrow respon...
9694408 - Temperature regulation during exercise.
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Validation Studies    
Journal Detail:
Title:  New Zealand veterinary journal     Volume:  55     ISSN:  0048-0169     ISO Abbreviation:  N Z Vet J     Publication Date:  2007 Aug 
Date Detail:
Created Date:  2007-08-06     Completed Date:  2007-09-27     Revised Date:  2009-11-11    
Medline Journal Info:
Nlm Unique ID:  0021406     Medline TA:  N Z Vet J     Country:  New Zealand    
Other Details:
Languages:  eng     Pagination:  152-7     Citation Subset:  IM    
Affiliation:
Animal Welfare Science and Bioethics Centre, Massey University, Private Bag 11222, Palmerston North, New Zealand. t.g.gibson@massey.ac.nz
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Anesthesia, General / veterinary*
Anesthetics, Local / administration & dosage
Animals
Cattle* / physiology,  surgery
Cautery / methods,  veterinary
Electrocardiography / methods,  veterinary
Electroencephalography / methods,  standards,  veterinary*
Female
Horns / surgery*
Lidocaine / administration & dosage
Pain Measurement / methods,  standards,  veterinary*
Tachycardia / epidemiology,  veterinary
Chemical
Reg. No./Substance:
0/Anesthetics, Local; 137-58-6/Lidocaine

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Cushing's Syndrome : an overview.
Next Document:  Avian malaria (Plasmodium spp) in yellow-eyed penguins: investigating the cause of high seroprevalen...