Midazolam effects cerebral metabolic oxygen requirement (CMRO2) by decreasing it and cerebral blood flow, analogous to barbiturates and propofol. It causes dose-related changes in regional cerebral blood flow in brain regions associated with the normal functioning of arousal, attention, and memory. Patients with decreased intracranial compliance show little or no change in intra-cranial pressure when […]
Propofol anesthesia has become the induction drug of choice for most of the surgical procedures, especially when rapid and complete awakening is desirable. Continuous IV infusion of Propofol anesthesia with or without other anesthetic drugs, is commonly used in TIVA and for sedation. Due to its quick onset and offset characteristics it is also becoming
There are various ways of describing what is opioid. The common feature of all the drugs belonging to the group of these drugs is a phenanthrene ring with side chain and additional rings that might be added to the central ring itself or to the side chains. 1. Naturally occurring: morphine, codeine, kheline, noscapine, and thebaine. 2.
Barbiturates mechanism of action is described here. Barbiturates most likely produce their sedative hypnotic effects through an interaction with the inhibitory neurotransmitter gamma-aminobutyric acid (GABA) in the CNS. Barbiturates cause reversible depression of all excitable tissues, the CNS being exquisitely sensitive. They bind to beta subunit of the inhibitory GABA-A receptor, a site distinct from
Propofol uses includes that, it does not trigger malignant hyperthermia in susceptible patients or experimental animals. The major Propofol uses are its use as Anesthetic agent or as a sedative. It is the drug most commonly used for induction of anesthesia. It can also be used for maintenance of anesthesia when it is ran as
Propofol phosphate, a water soluble propofol prodrug which is enzymatically converted to propofol, formaldehyde and inorganic phosphate, has been shown to produce sedation and anesthesia. A vegetarian formulation of propofol, Cleofol, has been used in a patient from the Jam community of India. Because it contains no lipid vehicles it is devoid of triglyceridaemia and
Once Pure agent scheme of presentation is executed it becomes very easy to deal with all the actions of the drugs of various classes of opioids, including pure agonist opioid . While understanding the pharmacological, systemic effect of these drugs it is logically possible to fix the action as per the neuroanatomical site of origin
Aging and liver disease affect glucuronidation less than oxidative metabolic pathways. And thus, lorazepam, oxazepam, benzodiazepines in the elderly and temazepam are preferentially used in elderly patients over other benzodiazepines as they are metabolized only by glucuronidation and have no active metabolites. Elderly patients may also be intrinsically sensitive to benzodiazepines, suggesting that the enhanced
Diazepam remains a popular oral drug for preoperative medication of adults and is the benzodiazepine most likely to be selected for management of delirium tremens and treatment of local anesthetic induced seizures. This is considered to be one of the diazepam uses that are very common. Production of skeletal muscle relaxation by diazepam is often
The respiratory effects of Ketamine bronchodilation are noticeable, mainly involving bronchodilation, which is mainly observed in asthmatic patients. Supposedly, Ketamine bronchodilation relaxes the bronchiolar musculature and prevents the bronchoconstriction induced by histamine, which would be an obvious advantage for asthmatic patients. The bronchodilatory activity is as effective as halothane or enflurane in preventing experimentally-induced Ketamine
