Midazolam produces dose-dependent decrease in ventilation with 0.15 mg/kg IV producing effect similar to diazepam 0.3 mg/kg IV. Patients with chronic obstructive pulmonary disease experience even greater midazolam respiratory depression . Transient apnoea usually follows after rapid injection of large doses of midazolam (>0.15 mg/kg IV) especially in the presence of premedication with opioids. The […]
The use of tens electrical stimulation to reduce the pain especially of postoperative nature is the main use of this technique. The tens electrical stimulation principle is again based on “gate control theory” of Melzaek and Wall, viz: small fibres stimulation leads to transmission of nociceptive stimuli via substantia gelatinosa (SG) cells which act as
Barbiturates list is explained in detail in this article. Thiopentone is prepared commercially from highly alkaline solutions as sodium salt that is readily soluble in water or saline. It is supplied as a yellowish, hygroscopic powder. The pH of a 2.5% solution of thiopental is 10.5. The following is a list of Barbiturates in common
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
Ketamine produces effective sedation, hence also known as Ketamine sedation . In pediatric patients for short surgical procedures or for putting intravenous catheters before IV induction ketamine has shown effective for producing sedation. It is highly effective with a wide margin of safety, and uniquely preserves protective airway reflexes and also does not require intravenous
Diethyl ether (C2H5-O-C2H5) is one of the metabolically safe non-halogenated anesthetics . About 6% is metabolized in the liver to ethanol and acetaldehyde, thereafter to acetic acid and onto carbon dioxide and water. Examples of non-halogenated anesthetics Divinyl ether Cyclopropane Trichloroethylene Non-halogenated anesthetics are all anesthetic agents mostly inhalation agents that do not contain a hologen in their structure. Divinyl
Midazolam, 0.2 mg/kg IV, for induction of intravenous versed anesthesia produces a greater decrease in systemic blood pressure and increase in heart rate than does diazepam, 0.5 mg/kg IV. The haemodynamic effects of midazolam are significant in humans. In normal humans, midazolam, 0.15 mg/kg IV over 15 seconds, produces statistically significant reduction in systolic (5%)
Subhypnotic doses of IV like Propofol 10 mg have been used to treat pruritus caused by neuraxial opioids. However, this beneficial effect has not been achieved in other studies. Propofol has been shown to possess antipruritic effect. Subhypnotic doses of propofol may be effective for the short-term symptomatic relief of pruritus associated with liver disease. Such
Depending upon mechanism of nsaid action involved the drugs can be specifically used to achieve the desired effects. The NSAIDs have been proven to block the synthesis of prostaglandins by inhibition of the enzyme cyclo oxygenase. Cyclo-oxygenase (prostaglandin synthetase) is the enzyme involved in the cell membrane injury related destruction of phospholipids to arachidonic acid,
Midazolam pediatric dose loading dose may be followed by a continuous IV infusion to maintain the effect. IV loading doses should not be used in neonates. Continuous IV infusion for sedation in critical care settings is important in pediatric patients. To initiate sedation using midazolam, an IV loading dose of 0.05 to 0.2 mg/kg administered
