Epidural and spinal opioids.
D002408:Catheters, Indwelling; D005283:Fentanyl / Q000008:administration & dosage / Q000378:metabolism; D006801:Humans; D007268:Injections, Epidural / Q000009:adverse effects / Q000379:methods; D007278:Injections, Spinal / Q000009:adverse effects / Q000379:methods; D007700:Kinetics; D009020:Morphine / Q000008:administration & dosage / Q000378:metabolism; D009294:Narcotics / Q000008:administration & dosage* / Q000009:adverse effects / Q000378:metabolism; D013115:Spinal Canal / Q000033:anatomy & histology; D013116:Spinal Cord / Q000033:anatomy & histology
D009294:Narcotics; D009020:Morphine; D005283:Fentanyl