Pentazocine agonist antagonist is supposedly capable of producing spinal level analgesia. However, it produces significant sedation, drowsiness. The drugs which are equidistant to either pure agonists or pure antagonists in the terms of their activity belong to this group, agonists at one receptor and antagonists at another. Two groups of synthetic compounds belong to this […]
The effect of agonist drug of opoid group have a lot of impact as listed: Cough: The cough center in medulla is suppressed, leading to antitussive action. Pure agonists especially related with codeine have pronounced effect. Nausea and Vomiting: The emesis is usually due to direct stimulation of chemoreceptor trigger zone (CTZ) of area postrema of the
For the Alveolar partial pressure of oxygen we see, Increasing the inspired concentration (F1) of an anesthetic agent increases the alveolar concentration (FA). A 75% nitrous oxide (N20) in oxygen mixture increases the FI/FA ratio of N2O. The amount of nitrous oxide absorbed will be greater than the nitrogen given out in the alveoli, hence
The detailed description of half life of phenobarbital is discussed here. Thiopentone produces hypnosis within 30 to 40 seconds of intravenous injection. For the half life of phenobarbital , the time required for equilibration of the brain with the thiopental concentration in the blood (effect-site equilibration time) is rapid. Recovery after a small dose is
Propofol decreases intraocular pressure and therefore has lot of propofol effects A single low dose bolus of propofol used for sedation before cataract surgery caused a moderate reduction in intraocular pressure with minimal side effects. Propofol Effect on Coagulation and Immunity System Some of the propofol effects are discussed here. Propofol does not cause significant coagulation
Ketamine Uses are many; here we are describing some of them. NMDA antagonists like ketamine were shown to be effective in suppressing the symptoms of opiate withdrawal. Subanesthetic doses (0.5 mg/kg/hour) of ketamine are effective in the correction of acute precipitated opiate withdrawal. Its use as an sedative is well known. The most common use
Propofol related infusion syndrome is a rare complication firstly reported in paediatric patients and also observed in adults, produced due to prolonged (>48 h) high doses of propofol (>66 mcg/kg/min) intravenous infusion. Even short-term propofol related infusion syndrome for surgical anaesthesia have been associated with development of metabolic acidosis. Propofol related infusion syndrome is characterized
In patients with acute renal failure, total body clearance is lower and the elimination half-life, while considering midazolam duration of action becomes longer than in patients with normal kidney function. In patients with impaired kidney function, the excretion of 1-hydroxymethyl midazolam glucuronide, the major metabolite of midazolam, is impaired. In healthy children aged 1 year
A syrup is effective for producing sedation and anxiolysis at a Midazolam oral dose of 0.25 mg/kg with minimal effect on ventilation even when administered at doses as large as 1 mg/kg. Midazolam oral is the most commonly used oral preoperative medication for children. Midazolam oral dose which is, 0.5 mg/kg given orally 30 minutes before
Pain with propofol injection occurs in majority of patients. Propofol injection pain can be reduced by the following methods explained here. Propofol causes pain or discomfort on injection in 28% to 90% of awake patients. A number of techniques have been tried for minimizing propofol injection pain with variable results. The propofol injection pain decreases
