It is rapidly distributed in the body with a propofol half life of only around 2 mm and has an efficient hepatic and extra hepatic clearance. Because the total body clearance may exceed liver blood flow, an extrahepatic metabolism or extrarenal elimination has been suggested. Hepatic metabolism is rapid and extensive, resulting in inactive, water-soluble […]
Emergence from ketamine anesthesia in the postoperative period may be associated with audiovisual ketamine hallucinations , confusional state, which may progress to delirium, proprioceptive disturbances (feelings of detachment from the body) and slightly reduced ability to recall objects seen after administration of the drugs. The ability to recall objects seen immediately before drug exposure remains
Midazolam IV is the first benzodiazepine that was produced primarily for use in anaesthesia. Walser and colleagues in 1976 “first described midazolam, the first clinically used water-soluble benzodiazepine. The imidazole ring in its structure accounts for its stability in aqueous solution and rapid metabolism. It is two to three times as potent as diazepam and
Vasopressin dose should be calculated before giving. Vasopressin is the exogenous, parenteral form of antidiuretic hormone (ADH) that may be used for several conditions in the intensive care unit (ICU), including the treatment of central diabetes insipidus and as a vasopressor agent in shock. Endogenous vasopressin dose is an important stress hormone and plays a
The fact that total body clearance of propofol metabolism exceeds hepatic blood flow is consistent with extra hepatic clearance. Indeed hepatic clearance of propofol was approximately 60% of total body clearance.Pulmonary uptake of propofol is significant and influences the initial availability of propofol. Human lungs take part in the elimination of propofol by transforming the
Effects of Barbiturates on the body are listed here. Thiopentone decreases the tidal volume and the effect on respiratory rate is biphasic ranging from tachypnea during light anesthesia to a progressive slowing of respiration with deepening anesthesia. However, like propofol, functional residual capacity is not reduced by thiopentone. Effects of Barbiturates on the body administered
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
As a group, paediatric patients generally require higher doses of midazolam than do adults and younger children may require higher doses than older children. In obese individuals, the midazolam syrup dose should be calculated based on ideal body weight. Oral premedication: Oral midazolam syrup is effective for sedation and anxiolysis at the doses of 0.25—1
Commonly administered IV anesthetics can cause excitatory effects that my manifest as spontaneous movements, such as etomidate myoclonus ,dystonia, and tremor. These spontaneous movements, particularly myoclonus, occur in 50% to 80% of patients receiving etomidate in the absence of premedication. In one report, 87% of patients receiving etomidate developed excitatory effects, of which 69% were
Interventional techniques of musculoskeletal chronic pain management include use of nerve blocks, root blocks, rhizotomies, cordotomy, etc. Musculoskeletal chronic pain management is required during the following : 1. Low back pain – Lumbosacral, spinal/vertebral syndromes – Radiculopathy – Prolapsed intervertebral disc – Lumbar canal stenosis 2. Neuropathies: Trigeminal neuralgias (Tic doloroux) 3. Phantom limb pain,
