Glucocorticoid therapy are most commonly used to mitigate an inflammatory response. They are used in a wide variety of patient populations seen in the intensive care unit (ICU). Unfortunately, these agents have many side effects, which often limit their use. In the ICU setting, the functions most commonly affected are endocrine regulation, immune response, and […]
The effect of Ketamine on brain the Ketamine is traditionally considered to increase cerebral blood flow and CMRO2 however, positron emission tomography shows that subanesthetic doses of racemic ketamine increase cerebral blood flow with a minor increase in regional CBV but do not affect oxygen consumption significantly. The most profound changes in regional CBF with Ketamine on
Pre anesthesia drugs and medicines is the term applied to the use of drugs prior to the administration of an anesthetic agent, with the objective of making anesthesia safer and more agreeable to the patient. The reasons for using pre anesthesia drugs are: For sedation, to reduce anxiety and apprehension without producing much drowsiness. To obtain an
When administered intrathecal ketamine shows local anesthetic effects in both animals and humans. Intrathecal ketamine when used as a sole agent (0.7-0.95 mg/kg) with or without epinephrine for intrathecal use, although produces motor and sensory block but the analgesia is inadequate and of short duration along with varied psychomimetic disturbances. When added to the intrathecal
Diazepam effects produce minimal depressant effects on ventilation with 0.2 mg/kg IV dose in Respiration system. The slight increase in PaCO2 is due primarily to a decrease in tidal volume. Nevertheless, nearly, small doses of diazepam (<10 mg IV) have produced apnoea. Combination of diazepam with other CNS depressants (opioids, alcohol) or administration of this
Hypoxia mechanism Following phases are included in the Hypoxia mechanism : 1. Anoxic hypoxia—Gas phase. There is inadequate supply of oxygen to the lungs, or the lung is not functioning properly. 2. Anemic hypoxia—Fluid hypoxia (phase). There is a decrease in the oxygen carrying capacity of the blood. 3. Stagnant hypoxia—Fluid phase. There is decreases
Various drugs than but with either less potency, or slight variation in their spectrum of pethidine cns excitation are included. Phenyl piperidines: Meperidine, phenoperidine Diphenyl compounds: Methadone, dextropropoxyphene Miscellaneous: Oxycodeine, hydrocoedine There are specific differences of these drugs as per their clinical importance of pethidine cns excitation. The equianalgesic dosages and potencies of various opioids
Midazolam structure is characterized by pH dependent ring opening phenomenon in which the ring remains open at pH values of less than 4, thus maintaining its water solubility. The pK of midazolam is 6.15, which permits the preparations of salts to be water soluble. The parenteral solution of midazolam used clinically is buffered to an
The discussion about chronic pain management anesthesiology is incomplete until and unless the very important aspect of pain is taken into wider consideration which is the chronic pain. Chronic pain is the major symptom of the majority of the patients presenting at outpatient clinics. It is the most commonly overlooked, misunderstood or wrongly labeled and
Propofol contamination in an emulsion formulation, has been associated with infective complications. It becomes contaminated once the ampoules have been opened. Propofol contamination supports the growth of all microorganisms. Diphtheroid bacilli and coagulase-negative staphylococci were the most frequent microorganisms. Others are E. coli, S. aureus, and P. aeruginosa. Adding lidocaine, or storing opened ampoules at
