Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0600097 (Sedation)
 1,337 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Clozapine is a unique compound belonging to a relatively new group of antipsychotic agents, the dibenzazepines. To our knowledge, the present study represents the first double-blind, controlled comparison recorded in the United States. The data suggest that clozapine in the present population of newly admitted, acutely psychotic schizophrenic individuals, and in the doses employed, was more effective in overall improvement response, discharge rate, and ameliorating discrete symptoms across the different objective rating scales used than was chlorpromazine (Thorazine) hydrochloride. Placebo was ineffective. Unlike chlorpromazine, no extrapyramidal reactions occurred in those patients ingesting clozapine. Clozapine was also beneficial in reversing abnormal involuntary motor movements. It is an excellent anxiolytic and hypnotic agent. Sedation, hypotension, and hypersalivation are among the more common side effects observed.
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PMID:Clozapine, chlorpromazine, and placebo in newly hospitalized, acutely schizophrenic patients: a controlled, double-blind comparison. 37 65

Extensive animal testing and 30 years of human experience have established the general safety of DEET when applied episodically to skin or bedclothes. Local and systemic toxic and allergic reactions to DEET have been observed in man. Three weeks prior to admission, for the purpose of self-medication, a 30 year old man began daily applications of the insect repellant, DEET followed by a 1-2 hour period in a light-bulb heated box. Sedation and incoherence were noted for short periods following each application session. Aggressiveness and psychotic ideation led to hospital admission where he displayed psychomotor hyperactivity, rapid and pressured speech, tangentiality, flight of ideas, and grandiose delusions. Treatment was begun with haloperidol. Clinical improvement was complete within 6 days, atypical for classic endogenous mania. Drug and metabolites were identified in the urine more than 2 weeks after the last drug application.
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PMID:Acute manic psychosis following the dermal application of N,N-diethyl-m-toluamide (DEET) in an adult. 378 6

The psychiatric side effects of the major antihypertensive drugs other than reserpine are reviewed, including centrally acting drugs such as methyldopa and clonidine, peripheral adrenergic drugs such as guanethidine, beta-adrenoceptor blockers such as propranolol, and diuretics. Problems with differential diagnosis and with the interpretation of case reports make assessment of psychiatric side effects difficult. Sedation and sleep disturbances are the most common side effects, occurring with methyldopa, clonidine, and propranolol. Only methyldopa is clearly associated with depression. Other reported effects are toxic confusional states and psychotic reactions. These are rare, however, and no clear patterns of development have been recognized.
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PMID:Psychiatric side effects of antihypertensive drugs other than reserpine. 612 25

The first central pharmacodynamic action of chlorpromazine to be described was sedation without narcosis. The antipsychotic action and extrapyramidal symptoms were observed later. Sedation can be separated into nonspecific sedation (drowsiness, somnolence) and specific sedation (psychomotor inhibition and psychic indifference). Both types are parts of the clinical profiles of classical neuroleptics. The sedative properties of neuroleptics may contribute to the overall efficacy in the treatment of psychotic patients, depending on the clinical situation. In most patients, however, sedation is only needed for a short period, or not at all. The drug induced sedation may adversely affect the patients' well-being and functional capabilities. The term neuroleptic-induced deficit syndrome (NIDS) has been coined to focus attention on the adverse mental effects of neuroleptics. NIDS still needs to be properly defined and to be differentiated from the deficit syndrome of schizophrenia and postpsychotic depression. Assessment methods are needed to establish the incidence and prevalence of NIDS, to evaluate the importance of NIDS in the overall treatment outcome in psychoses and to facilitate development of better antipsychotic agents.
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PMID:Neuroleptics and the neuroleptic-induced deficit syndrome. 791 56

Traditional centrally acting antihypertensives have been associated with a high incidence of adverse effects and are no longer recommended as first-line therapy. The newer imidazoline receptor agonists must overcome this reputation if they are to gain recognition as potential first-line agents for hypertension. Methyldopa, a centrally acting alpha(2)-agonist, is characterized by a number of serious adverse reactions that limit its use. Although unpredictable idiosyncratic or hypersensitivity reactions are uncommon, these include hepatitis, myocarditis, and hemolytic anaemia. Less serious problems such as abnormal liver function tests, positive Coombs test, drug-induced fever, and pancreatitis also occur. Central side effects include drowsiness, fatigue, lethargy, sedation, depression, psychotic reactions, nasal stuffiness, impotence, and exacerbation of Parkinsonism. In hypertensive men, methyldopa is less well tolerated than either captopril or propranolol, and up to 20% of patients discontinue therapy because of adverse effects. Clonidine acts primarily as an alpha(2)-agonist but also acts as an agonist at imidazoline receptors in the rostroventrolateral medulla. It is equipotent to most other antihypertensives but is considerably less well-tolerated in comparative trials. The principal adverse effects of clonidine are drowsiness, sedation, lethargy and dry mouth. Reserpine acts primarily by depleting central catecholamine neurotransmitter stores. It was very extensively used in early hypertension trials, but its central side effects of sedation, nasal stuffiness, and severe depression are now considered so undesirable that the drug is seldom prescribed. The imidazoline (I1) agonists moxonidine and rilmenidine act selectively and have very little central alpha(2)-agonist activity. In comparative studies against placebo and other reference antihypertensives, the only adverse effect consistently associated with these drugs was dry mouth (approximate placebo-corrected incidence 10%). Sedation was not pronounced. Withdrawal syndromes are complex pathophysiologic processes and occur with a variety of antihypertensive drugs. Cessation of therapy with clonidine and, to a lesser extent, methyldopa may result in a severe withdrawal syndrome characterized by restlessness, sweating, anxiety, tremor, palpitations, and headache. There may be a rapid rise in blood pressure, often with a true "rebound" to higher than pretreatment levels. Plasma and urinary catecholamine levels are increased, and fatalities have been reported. It is important to stress that such a syndrome has not been recorded, in animal or human studies, with either moxonidine or rilmenidine.
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PMID:Aspects of tolerability of centrally acting antihypertensive drugs. 887 99

The occurrence of psychosis is frequent during the evolution of Parkinson's disease. The reduction of therapeutics or the use of classical neuroleptics may improve the symptoms, but usually worsens parkinsonism. Clozapine is an atypical neuroleptic with only few extrapyramidal effects, which has been proposed at low dose in this indication since 1985. A review of the literature, about more than 200 patients shows good results in approximately 90% without worsening of extrapyramidal symptoms. Some patients even noted an improvement of their motor state while treated by clozapine alone or as dopatherapy was secondarily increased. More controversial results were obtained in demented or depressed patients. Sedation is one of the most frequently encountered side-effect but rarely necessitates the withdrawal of clozapine. Even if the risk of agranulocytosis is slight, regular blood cell counts must be done.
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PMID:Clozapine for the treatment of psychosis in Parkinson's disease: a review. 894 85

Agitation is a nonspecific constellation of symptoms seen in a variety of psychiatric disorders, ranging from psychotic exacerbations in patients with schizophrenia to behavioral disturbances associated with organic factors. Its treatment must be individualized and based on the etiology of the psychomotor disturbance. Certain categories of drugs are broadly effective. Sedation and control of disruptive and dangerous behavior are the initial goals in stabilizing acutely agitated patients. Sedation is necessary during the lag period before antipsychotic and mood-stabilizing drugs take effect. Barbiturates and chlorpromazine, initially given to control agitated behavior, are largely supplanted by higher-potency antipsychotics, benzodiazepines, and, recently, a combination of these two agents. Agitation is generally controlled within hours to days, whereas remission of affective or psychotic symptoms often requires weeks to months. Once remission is obtained, sedation is no longer desired and may be a barrier to optimal patient function and compliance. Thus, for long-term treatment, strategies are used to minimize sedation, such as reducing dosages, changing administration to bedtime, or adding antidepressants or stimulants where appropriate.
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PMID:Sedation in acute and chronic agitation. 894 99

Patients with methamphetamine toxicity often present to the emergency department (ED) agitated, violent and psychotic. To determine the efficacy of a benzodiazepine versus a butyrophenone for chemical restraint we conducted a prospective, randomized study at a large urban university ED between January 1995 and January 1997. Patients were randomized to receive either lorazepam or droperidol intravenously. A 6-point sedation scale was devised, with 6 representing extreme agitation and 1 deep sleep. Sedation scores were recorded at time 0, 5, 10, 15, 30 and 60 min. Vital signs were recorded at time 0 and at 60 min. If sedation was inadequate, repeat dosages of each drug could be repeated at 30 min. Toxicology screen, ethanol and creatinine phosphokinase levels were obtained. A total of 146 patients were evaluated. Seventy-four patients received lorazepam and 72 received droperidol. Both drugs had similar sedation profiles at 5 min. Patients receiving droperidol had significantly improved sedation scores at times 10, 15, 30 and 60 min than lorazepam (p < 0.001). More repeat doses of lorazepam were given (26) than droperidol (6) at 30 min. Both drugs produced significant reduction in pulse, systolic blood pressure, respiratory rate, and temperature over 60 min. We conclude droperidol produces a more rapid and profound sedation than lorazepam for methamphetamine toxicity. Lorazepam is more likely to require repeat dosing than droperidol.
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PMID:Methamphetamine toxicity: treatment with a benzodiazepine versus a butyrophenone. 942 92

Olanzapine is an "atypical" antipsychotic agent with a high affinity for serotonin 5HT2A/C, 5HT3, 5HT6, and dopamine D1, D2, D3, D4 receptors. Depressed patients with psychotic disorders frequently require treatment with concomitant antipsychotic and antidepressant medications. Imipramine pharmacokinetics serve as a marker for hepatic CYP2D6, CYP1A2, CYP3A activity. An open-label, three-way randomized crossover study was done to determine the safety, pharmacokinetics, and potential for a drug interaction between olanzapine (5 mg) and imipramine (75 mg). Each drug was administered alone and in combination. Nine healthy men, ages 32 to 54 years, enrolled in the study. Psychomotor performance capacities, plasma olanzapine, imipramine, desipramine concentrations, and clinical laboratory tests were measured. Pharmacokinetic variables, vital signs, subjective tests for liveliness, and psychomotor outcomes were analyzed using a two-way ANOVA. Olanzapine was safe. Sedation, postural hypotension, and minor vital sign alterations occurred during all treatments. On the liveliness questionnaire, patients generally reported poorer (less lively) scores with olanzapine alone or coadministered with imipramine versus baseline scores. These effects disappeared within 24 hours after administration. Olanzapine alone and in combination decreased motor-speed tasks (finger tapping and visual-arm random reach) compared with baseline or imipramine treatment. Peak 6-hour changes were statistically significant but clinical importance was only marginal. Olanzapine concentrations were < 19% greater than with imipramine. But olanzapine did not affect the kinetics of imipramine or desipramine and, therefore, did not show a metabolic drug interaction involving CYP2D6.
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PMID:Olanzapine: interaction study with imipramine. 950 89

We report a patient with drug abuse who developed multiple psychotic symptoms including euphoria, excitement, hallucination and delirium during sedation with propofol under spinal anesthesia. A 37-year-old man who had abused methamphetamines, thinner, phychomimetics and alcohol for 20 years was scheduled for skin transplant as day-case surgery. He was treated with cholorpromazine, haloperidol and flunitrazepam just before the surgery. Sedation with propofol under spinal anesthesia was thought to be suitable in order to prevent psychotic symptoms. After spinal anesthesia, propofol 5 mg.kg-1.h-1 was administered intravenously as sedation. However, euphoria and excitement appeared 10 min after the start of infusion. He also demonstrated excitement, hallucination and delirium under propofol 6-8 mg.kg-1.h-1. His symptoms were suppressed by intravenous injection of haloperidol 5 mg. We speculate that propofol may produce psychotic symptoms when it is used in patients with a history of drug abuse.
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PMID:[A patient with drug abuse who developed multiple psychotic symptoms during sedation with propofol]. 962 70


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