Flashcards in Injectable Anaesthetics: Barbiturates and Pentobarbitone Deck (9)
What do barbiturates cause?
- Adequate muscle relaxation
Do barbiturates provide good analgesic properties
Why do barbituates have a rapid onset of anaesthesia
Highly lipid soluble and so enter the brain tissue rapidly (15-30seconds)
Where do barbituates redistribute?
blood levels fall as it goes into plasma and then redistributed into muscle/fat
Name 3 patients that baributates are not suitable for?
- Renal / hepatic patients
- Patients with cardiovascular disease
- Shocked patients
- Thin patients
Why are barbiturates not suitable for thin patients
increased potency due to lack of body fat to redistribute drug
Why are barbiturates not suitable for shocked patients?
Reduced blood flow to fat and increased cardiac and cerebral blood flow
Name a barbiturate anaesthetic drug