Download Anaesthesia for Veterinary Nurses by Elizabeth Welsh (ed.) PDF

By Elizabeth Welsh (ed.)

Sedation and anaesthesia are a very important a part of veterinary perform. The protocols and strategies concerned are frequently advanced and differ significantly from animal to animal. The veterinary nurse has a pivotal position in anaesthesia, being without delay concerned ahead of, in the course of and after the anaesthetic interval.

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In general, drug therapy should be continued as normal, ensuring administration before premedication. (8) Main complaint and history. Cardiovascular history • Exercise tolerance: one of the most useful indicators of cardiac ‘fitness’. It is advisable to investigate reported exercise intolerance before surgery, and stabilise any identifiable cardiopulmonary disease. Coughing? • • Difficulty breathing? Preoperative Assessment and Preparation of the Patient 37 Gastrointestinal history • Persistent, recurrent or recent vomiting?

They may have a reduced ability to metabolise injectable anaesthetic agents because of impaired hepatic function. Care should be taken during the anaesthetic procedure to minimise heat loss and to pad pressure points in these patients. • Demeanour: The veterinary surgeon may choose different pre-anaesthetic or general anaesthetic drugs for patients that are very excitable, nervous or aggressive compared to those for a quiet, relaxed patient. Hydration status The results of the following observations are important in the identification of dehydration and/or hypovolaemia: • skin elasticity; • pulse rate and quality; • mucous membrane colour: mucosal pallor may reflect hypovolaemia, poor • • • • circulation or anaemia (however, in chronic anaemia the mucosal colour may appear relatively normal); capillary refi ll time; respiratory rate; temperature of extremities; mental alertness.

Other molecules cross into the brain more slowly. The rate is dependent on molecular size and lipid solubility; smaller molecules and those with high lipid solubility cross the barrier most rapidly. Anaesthetic agents must cross the barrier in order to exert their effect on the brain. Most of the inhalational anaesthetic agents used in veterinary practice are lipophilic. The more easily they can enter the brain the more potent they are; for example, methoxyflurane is the most lipophilic inhalational agent and is also the most potent.

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