Key result
Older age linked to higher epidural analgesia levels and prolonged bupivacaine half-life.
Why the study?
Effects of aging on epidural administration of 0.5% bupivacaine without epinephrine were studied to understand age-related pharmacodynamic and pharmacokinetic changes.
Does age affect the pharmacodynamics and pharmacokinetics of epidural bupivacaine?
Population
Patients aged 20-55 years and older than 55 years
Comparison
Younger group (20-55 years) vs older group (>55 years)
Design
Observational study
Authors
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Age increases cephalad spread and slows bupivacaine clearance after epidural; leaves open whether dose reduction improves safety in elderly patients.
Observational
Does age affect the pharmacodynamics and pharmacokinetics of epidural bupivacaine?
Aging alters the pharmacokinetics and spread of epidural bupivacaine, with decreased clearance and increased terminal half-life in older patients.
Veering et al. (1987) reported an observational. Older age (>55 years) vs. Age 20 to 55 years was evaluated on Onset and upper level of analgesia, duration of anesthesia, and pharmacokinetics. Older age (>55 years) decreased the onset of analgesia in caudad segments, increased the upper level of analgesia, decreased total plasma clearance, and increased terminal half-life.
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