Search results
Results From The WOW.Com Content Network
To induce general anesthesia, propofol is the drug used almost exclusively, having largely replaced sodium thiopental. [13]It is often administered as part of an anesthesia maintenance technique called total intravenous anesthesia, using either manually programmed infusion pumps or computer-controlled infusion pumps in a process called target controlled infusion (TCI).
Propofol infusion syndrome (PRIS) is a rare syndrome which affects patients undergoing long-term treatment with high doses of the anaesthetic and sedative drug propofol. It can lead to cardiac failure , rhabdomyolysis , metabolic acidosis , and kidney failure , and is often fatal.
In 1983, a lipid emulsion formulation of propofol was available, which carried great potential during clinical trials. [8] It was licensed for use in Europe in 1986 and received FDA approval in the US in 1989. [1] Propofol is now used worldwide with a well-defined pharmacological profile for a variety of medical uses.
Propofol – It is a highly lipid-soluble, GABA agonist. [15] The dosage is 1.5 mg/kg (usually 100 to 200 mg). It has quick onset of action, can cross the blood-brain barrier, wide tissue distribution, and can be hepatically cleared by the body quickly. [15] In the elderly, the rate of Propofol clearance is low.
Close monitoring by the anesthesia provider will sometimes be provided, to help keep the patient comfortable during a medical procedure, along with other drugs to help relax the body. It can also help control breathing, blood pressure, blood flow, and heart rate and rhythm, when needed. [1] There are four levels of sedation by anesthesia.
Called target controlled infusion (TCI), it involves using a computer-controlled syringe driver (pump) to infuse propofol throughout the duration of surgery, removing the need for a volatile anaesthetic and allowing pharmacologic principles to more precisely guide the amount of the drug used by setting the desired drug concentration.
Propofol [6] is a non-barbiturate derivative that is thought to act by stimulating inhibitory GABA receptors and blocking excitatory NMDA receptors. It takes 40 seconds for the effects of propofol to kick in, and effects last six minutes. [3] Propofol has both sedative and amnestic effects, but provides no analgesia.
Maintaining a stable infusion rate involves ensuring that a steady-state concentration is achieved through proper distribution of the anesthetic agent. [9] However, if tissue saturation occurs while the infusion rate remains constant, there is a risk that the infusion may exceed the drug's clearance rate, leading to plasma concentrations that ...