Why the study?
Does induced hypercapnia cause circulatory changes in elderly patients under extensive thoracolumbar epidural anaesthesia?
Population
10 elderly patients subjected to extensive thoracolumbar epidural anaesthesia (extending from T1 to L2)
Comparison
Induced hypercapnia after establishment of… vs Induced hypercapnia before the epidural block
Design
Other
Follow-up
short-term (during anaesthesia)
Authors
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May warrant ventilatory caution with hypercapnia during epidural anesthesia in elderly patients; leaves open the role of residual sympathetic fibers in circulatory responses.
Does induced hypercapnia cause circulatory changes in elderly patients under extensive thoracolumbar epidural anaesthesia?
Despite extensive epidural block, some sympathetic nerve fibers escape and can be mobilized during sympathetic stimulation with hypercapnia, causing slight increases in blood pressure.
Sundberg et al. (1987) studied this question.
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