Abstract
Anaesthesia and surgery are often associated with increased morbidity and mortality in the elderly. Today, innovations in science and engineering in combination with a system approach to safety and training have made anaesthesia safe in the very old. This chapter will review the effects of age-related physiological changes and altered pharmacokinetics on the anaesthetic drugs and techniques in the elderly. It will cover broad principles of anaesthesia as they apply to the elderly. Age-related changes, for instance, may cause a reduction in anaesthetic requirements due to reduced neuronal mass and weakness of the skeletal muscles, whilst changes in the respiratory system may impact on perioperative assessment and postoperative care. With an ageing population, frailty, coexisting medical problems, the urgency of surgery and the type of surgical procedures have become the important determinants of outcome. The chapter also outlines the common postoperative complications in the elderly. The process of preoperative evaluation and risk assessment is also outlined.
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Multiple Choice Questions (MCQs)
Multiple Choice Questions (MCQs)
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1.
The following regarding altered pharmacokinetics with ageing are true Except:
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A.
Decrease in total body water affects volume distribution resulting in water-soluble drugs attaining a higher serum levels.
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B.
Increase in body fat with ageing results in fat-soluble drugs having their half-life increased.
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Reduction of liver mass and blood flow with ageing results in decreased rate of drug clearance by the liver.
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D.
Serum creatinine is an accurate reflection of renal impairment in the elderly.
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A.
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2.
The following regarding altered pharmacokinetics with ageing are true Except:
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The elderly are three times more susceptible to ADRs than those younger than 5 years.
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B.
The elderly on multiple drugs have decreased adherence to drug regimes.
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C.
Reduction in renal function affects not only renally excreted drugs but also drugs that undergo extensive metabolism in the liver.
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D.
Some effects may be increased in the elderly, for example, the heart rate response and a higher antihypertensive response than the young to beta-blockers.
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A.
Answers to MCQs
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1.
D
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2.
D
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Senthuran, S., Nagaratnam, N. (2019). Geriatric Anaesthesia. In: Nagaratnam, N., Nagaratnam, K., Cheuk, G. (eds) Advanced Age Geriatric Care. Springer, Cham. https://doi.org/10.1007/978-3-319-96998-5_9
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DOI: https://doi.org/10.1007/978-3-319-96998-5_9
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