Table 40-22
- Physiologic changes of pregnancy
- Decreased requirements for local and inhaled anesthetics
- Low functional residual capacity
- High basal metabolic rate
- Slowed gastric emptying
- Aortocaval compression
- Teratogenicity of anesthetic drugs (period of organogenesis is 15–56 days; single exposure seems unlikely to cause abnormalities)
- Adequacy of uteroplacental circulation
- Initiation of premature labor