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Intraoperative hypotension, assessment, prevention and cure

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Price: £25

Selkirk Drive

Holmes Chapel



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Hypotension or low blood pressure, is where blood pressure in the arteries is abnormally low and is defined as a mean arterial pressure (MAP) < 60 mmHg or systolic arterial pressure (SAP) < 90 mmHg. It is one of the most common intra-operative complications observed in small animal anaesthesia. The systematic use of blood pressure monitors should be encouraged in all patients with indirect blood pressure monitoring monitors being the most readily available. Blood pressure gives us information on cardiac output, which is a vital component to tissue perfusion. All anaesthetic drugs produce a dose-dependent hypotension. The lower the vaporiser setting the better the blood pressure will be. Using a balanced anaesthetic technique with good analgesia will help to achieve this. If we are not monitoring blood pressure we will be unable to prevent it and will be unable to assess treatment. Blood flow to major organs is regulated between 60 – 120mmHg mean arterial pressure (MAP). A mean arterial blood pressure (MAP) below 60mmHg (Systolic <90mmg) for over 30mins can lead to: • Renal failure • Delayed recovery • Neuromuscular complications • Decreased hepatic metabolism of drugs • CNS abnormalities such as blindness Speaker :

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