Current clinical pharmacology
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Curr Clin Pharmacol · Jan 2017
ReviewPharmacology and Perioperative Considerations for Psychiatric Medications.
Psychotropic medications are being used increasingly as analgesics and for other off-label indications for patients with and without psychiatric conditions. While the pharmacology of most of these drugs is now known, their interaction with anesthetic drugs and implications of regular use are still relatively unclear. ⋯ Psychotropic medications can be broadly divided into classes, which include antidepressants, antipsychotics, anxiolytics, mood stabilizers, and stimulants. Although most evidence suggests the continuation of these medications in the perioperative period, it is still important to determine how psychotropic medications interact with routinely used anesthetic agents and which medications should be continued and which should not be continued on an individualized basis for each patient.
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Curr Clin Pharmacol · Jan 2017
Comparative Study Clinical TrialLevetiracetam in Compare to Sodium Valproate for Prophylaxis in Chronic Migraine Headache: A Randomized Double-Blind Clinical Trial.
Migraine is not curable, but preventive treatments are usually used to decrease the intensity and frequency of headache attacks. Different therapeutic options are widely studied for chronic migraine (CM), but all of them have different inefficacies. ⋯ According to our findings, levetiracetam offered improvement in headache frequency, severity, and MIDAS score in patients with CM. However, levetiracetam was not effective enough for chronic migraine as valproate, despite some significant effect. Thus levetiracetam can be one of the choices for limited chronic migraine subjects who are in contraindication of Valproate.
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Cannabis sativa is also popularly known as marijuana. It has been cultivated and used by man for recreational and medicinal purposes since many centuries. Study of cannabinoids was at bay for very long time and its therapeutic value could not be adequately harnessed due to its legal status as proscribed drug in most of the countries. ⋯ Besides this, development of the suitable dosage forms with maximum efficacy and minimum adverse effects is also warranted. Another angle to be introspected for therapeutic abilities of this group of drugs is non-CB1 and non-CB2 receptor targets for cannabinoids. In order to successfully exploit the therapeutic potential of endocannabinoid system, it is imperative to further characterize the endocannabinoid system in terms of identification of the exact cellular location of cannabinoid receptors and their role as "protective" and "disease inducing substance", time-dependent changes in the expression of cannabinoid receptors.
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Curr Clin Pharmacol · Jan 2015
ReviewAnesthetic pharmacology and perioperative considerations for the end stage liver disease patient.
The number of patients with end stage liver disease is growing worldwide. This is likely a result of advances in medical science that have allowed these patients to lead longer lives since the incidence of diseases such as alcoholic cirrhosis and viral hepatitis have remained stable or even decreased in recent years, at least in more developed nations. Many of these patients will require anesthetic care at some point. ⋯ An understanding of pharmacokinetic principles provides the anesthesiologist with a scientific foundation for achieving therapeutic objectives associated with the use of any drug; however, pathologic conditions often alter the expected kinetic profile of many drugs. Anesthesia providers caring for these patients must be aware of the altered pharmacokinetics that may occur in these patients. We review normal liver physiology, pathophysiology of liver disease in general, and how liver failure affects the pharmacokinetics and pharmacodynamics of anesthetic agents; providing some specific examples.
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Orthotopic liver transplantation (OLT) recipients have been reported to have decreased perioperative opioid and intraoperative inhalational anesthetic requirements when compared to patients without liver disease undergoing other types of major abdominal surgeries. The severity of the liver disease and the process of the transplantation itself may alter the pharmacokinetic and pharmacodynamic effects of different pain medications. Chemical injury of the liver and the high degree of surgical stress may also increase the levels of neuropeptides involved in pain modulation. ⋯ With this development, the understanding of the analgesic pharmacology in the care of the OLT patients is even more important. Proper dosage of medications can achieve adequate intraoperative anesthetic depth and postoperative pain control, while avoiding over-sedation which increases risk of prolonged postoperative mechanical ventilation. The purpose of this review is to summarize the pharmacokinetics and pharmacodynamics of the analgesic medications commonly administered to this patient population.