Naloxone (N-allyl oxomorphone) and newer drugs like nalmexone, naltrexone, nalmefene, and nalbuphine belong to naloxone group. These drugs have practically no agonist action on any of the receptors or their subtypes. But these drugs completely reverse the action of all the drugs, pure, partial, agonist-antagonists at µ, K, σ, δ and other receptors including analgesia, respiratory […]
Propofol is known to possess direct antiemetic effects. Propofol antiemetic use for induction and maintenance of anesthesia has been shown to be associated with a lower incidence of postoperative nausea and vomiting (PONV) when compared to any other anesthetic drug or technique. It has been shown that total intravenous anaesthesia (TIVA) with propofol for anesthesia
Barbiturate withdrawal is when sudden stopping of barbiturate drugs causes severe illness and withdrawal. This especially happens when infusions are given in the hospital and abruptly stopped. What are the Barbiturate withdrawal symptoms? In the First 12-16 hours: There is an observable improvement. After 16 hours: nausea, vomiting, anxiety, tremors, abdominal cramps, orthostatic hypotension, restlessness.
Propofol has a chemical structure similar to that of phenol-based free radical scavengers such as vitamin E, and reduces free radicals. This Propofol antioxidant may directly intervene at the critical phase of reperfusion injury by reducing free radicals, Ca 2+ influx and neutrophil activity. Oxygen leads to the formation of free oxygen radicals which react
Flumazenil or Anexate is an imidazo benzodiazepine that binds competitively to BDZ receptors and antagonizes many of the actions of benzodiazepines. Flumazenil is a benzodiazepine antagonist. It does not block the pharmacologic effects of GABA or all GABA mimetic but it specifically antagonizes the actions of benzodiazepines. Given alone, it has minimal effect on the
Midazolam infusion can be used either alone or combined with a narcotic immediately before the procedure, with supplemental doses to maintain the desired level of sedation throughout the procedure. For short endoscopic or short diagnostic procedures and direct current cardioversion, midazolam infusion of 1 mg/mL formulation is recommended for IV sedation to facilitate slow injection.
For premedication, the recommended midazolam dosage is 0.07 to 0.08 mg/kg IM (usual dose is about 5 mg IM for an average adult) administered 30 to 60 minutes preoperatively. Lower doses should be used in elderly or debilitated patients. In a study of patients 60 years or older who did not receive concomitant narcotics, 2
Pain is a personal and subjective experience of each individual. Objectivity in such situation of acute pain management techniques is very difficult. So the best way out of this is: “If patient says it hurts, then it hurts!” After accepting the pain, then try to quantify or assess the severity of the pain using acute
John Mayow of Oxford in 1674 first observed that a component of air is essential for respiration and fire. Stephen Hale prepared oxygen along with other gases in 1927, thus making a memorable mark in the history of oxygen . Discovery, importance and history of oxygen are credited to Priestly (1777), who named it as
One of the lorazepam uses , is that the Lorazepam undergoes reliable absorption after oral and I.M. injection. After oral administration, maximal plasma concentrations of lorazepam occur in 2 to 4 hours and persist at therapeutic levels for up to 24 to 48 hours. The recommended oral dose of lorazepam uses preoperative medication which is
