Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0042963 (vomiting)
 31,883 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The endogenous opiate-like peptides, beta-endorphin, methionine- and leucine-enkephalin have been investigated in unanaesthetized cats after intracerebroventricular injection. beta-Endorphin produced marked and prolonged psychomotor stimulation (restlessness, apprehension, looking around, vacant stare and impelling locomotion), accompanied by pupillary dilation and tremor which was prevented by nalorphine. In contrast to beta-endorphin, the enkephalins did not cause affective behavioural phenomena. However, the enkephalins evoked transient and inconsistent vomiting which was also prevented by nalorphine. It is apparent, therefore, that morphinomimetic brain peptides are involved in at least two functions in the central nervous system: beta-endorphin subserves the mediation of a long-lasting psychomotor stimulation, while the enkephalins mediate vomiting of a transient character.
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PMID:Differences in central effects of beta-endorphin and enkephalins: beta-endorphin. A potent psychomotor stimulant. 627 57

Minor surgical procedures do not always require hospitalisation for several days. The use of short-acting anaesthetic agents should make such procedures possible on an ambulatory basis. A study was undertaken of the combination of tiapride and ketamine in 97 women seen in the department of obstetrics for therapeutic abortion or biopsy-curettage. The drug combination was satisfactory in the great majority of cases. It is sufficiently analgesic for surgery of this type. The minimal level of narcosis ensures rapid recovery without any subsequent falling asleep again. The psychomotor agitation caused by ketamine is counteracted by the doses of tiapride used. Only vomiting may be felt to be too frequent. Nevertheless, this occurred in women who were fully awake and had no major consequences.
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PMID:[Short-term obstetrical anesthesia. Study of the tiapride-ketamine combination]. 653 86

The aim of this study was to evaluate the dental treatments under nitrous oxide-oxygen sedation carried out during 1 yr by the first 45 Swedish dentists trained at probationary courses in the use of the technique. Special emphasis was placed on evaluating the risk and incidence of side effects. Data from 1719 treatment sessions in 823 patients, mainly children, were analyzed. Standardized sedation technique was used and the maximum level of nitrous oxide administered was set at 60%. About 90% of the patients showed excellent or fair acceptance. Factors influencing the acceptance were the patient's age, history of psychiatric disorders, mental retardation and occurrence of side effects. In 4.5% of the treatment sessions the patient experienced side effects, e.g. restlessness, vomiting or nausea, during treatment and in 0.9% after the treatment session. The side effects were mainly mild. No correlation was found between side effects and the nitrous oxide concentration used, length of treatment, patient's age or health classification. It is concluded that nitrous oxide-oxygen sedation is an excellent and safe aid to dental care.
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PMID:Nitrous oxide-oxygen sedation in dental care. 658 Sep 99

Methyl bromide (MeBr) is used as an insecticide fumigant. Four deaths and three recent hospitalizations have resulted from exposures to MeBr in Dade County, FL. Six cases occurred during burglaries of tented houses over a nine-month period. In four lethal exposures, the symptoms of nausea, vomiting, and malaise preceded fulminant respiratory failure. Two of these also had seizures, delirium, and agitation. Serum or plasma bromide ion levels ranged from 40 to 583 mg/L. Pulmonary edema, hyaline membranes, and hemorrhagic alveolitis were present at autopsy along with varying degrees of cerebral edema. The nonlethal exposures resulted in symptoms of conjunctival irritation, headache, or nausea. Plasma bromide concentrations varied between 17.5 and 321 mg/L. Methyl bromide characteristics, use, morbidity, and mortality in Florida during the past 25 years are reviewed. Remedies for illegal entry are proposed.
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PMID:Death and injury caused by methyl bromide, an insecticide fumigant. 661 79

The symptomatology and management of toxicity caused by nonprescription stimulants is reviewed. Nonprescription stimulants contain (singly or in combination) the same basic active ingredients: caffeine 100-200 mg, phenylpropanolamine 25-50 mg, and ephedrine 25 mg. Generally, toxic reactions involve excessive CNS stimulation (e.g., increased motor activity, anxiety, and agitation) and mildly elevated pulse rate and blood pressure that resolve in six to eight hours without specific treatment. However, reactions following the ingestion of these stimulants have included severe hypertension, possible renal failure, cerebral hemorrhage, and cardiac arrhythmias. Neither ephedrine nor caffeine ingested as single entities have been reported to produce increases in blood pressure associated with end-organ damage; however, severe hypertension has followed therapeutic doses of phenylpropanolamine. General management in the overdosed patient involves establishing respiration, initiating emesis, administering activated charcoal and a cathartic, and monitoring the patient's blood pressure, ECG, fluid intake, and urinary output. The increased availability of tablets and capsules containing substantial quantities of phenylpropanolamine, caffeine, and ephedrine creates a potential for drug-induced morbidity and mortality.
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PMID:Managing acute toxicity from nonprescription stimulants. 676 97

Intravenous clonidine self-administration was studied in rhesus monkeys under conditions of limited and unlimited access. Limited access consisted of daily 2-h experimental sessions with drug available on a fixed ratio 10 schedule. For unlimited access, drug was available 23 h/day with each response resulting in an injection. In all animals under both conditions, responding was maintained at levels that were above those maintained by saline injections at doses between 0.3 and 10 microgram/kg/inj, and the number of injections taken per session depended upon the dose. Under conditions of limited access, peak self-administration rates varied between animals but averaged approximately 30 inj/session. Total session intake was occasionally in excess of 1.0 mg/kg. Under conditions of unlimited access animals frequently self-administered more than 300 inj/day and intakes averaging 3.6 mg/kg/day occurred at the highest dose tested (10 microgram/kg/inj). When saline was substituted for clonidine after periods of clonidine access that ranged from 10-40 days, withdrawal signs included facial flushing, refusal of preferred food, restlessness, salivation, and emesis. These signs could be reversed with IV clonidine but could not be reliably precipitated with IV naloxone.
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PMID:Reinforcing properties of clonidine in rhesus monkeys. 681 15

A double-blind trial was undertaken to compare the effects of trimeprazine tartrate (2 mg kg-1 or 4 mg kg-1) plus atropine 0.03 mg kg-1 for oral premedication of 192 children undergoing tonsillectomy. Demeanour before operation, side-effects after operation, recovery times and fluid balance were studied. Behaviour in the anaesthetic room and restlessness after operation were unaffected by the dose given. There was less vomiting associated with 4 mg kg-1 compared with 2 mg kg-1. Prolonged recovery times occurred frequently in the two groups, 14% in the small- and 17% in the large-dose groups taking more than 10 h to recover full mental faculties. Fluid balance was unaffected by the dose and prolonged recovery did not result in a reduction of urine output. Trimeprazine tartrate is not recommended for routine premedication when early recovery is required.
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PMID:Premedication of children with trimeprazine tartrate. 702 20

Nicotine produced a distinct reproducible syndrome in the conscious dog when injected intravenously or intracerebroventricularly. Intravenously administered nicotine (40 micrograms/kg/min for 20 minutes) increased cardiac and respiratory rates and produced analgesia, miosis, hypothermia, behavioral restlessness and emesis. When microinjected into the third cerebral ventricle, nicotine (100-200 micrograms) similarly increased cardiac and respiratory rates and pupillary diameter; and produced behavioral restlessness, emesis, erratic analgesia and maintained wakefulness and a desynchronized EEG. Microinjection of nicotine (5-25 micrograms) into the periaqueductal gray failed to alter any of the parameters studied. Intravenous pretreatment with the opioid antagonist naltrexone (2 mg/kg) influenced the action of intravenous nicotine on certain physiological systems. While naltrexone alone produced a significant degree of tachycardia, miosis, and analgesia, it potentiated the tachypnea and antagonized the miotic response evoked by nicotine. Methionine-enkephalin was detected in perfusates obtained from the lateral cerebral ventricles of conscious dogs. Nicotine produced a non-significant decrease in enkephalin levels. These observations suggest that there are interactions between endogenous opioid and nicotinic processes. However, they are complex and may differ from one functional system to another.
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PMID:Interaction between nicotine and endogenous opioid mechanisms in the unanesthetized dog. 717 83

Ten cases of ingestion of yellow phosphorus rat poison, including four cases that occurred during the past 3 years, are reported. Comparison of these cases with 82 others from the literature showed that ingestion of yellow phosphorus paste often results in clinical findings that are different from those described for acute yellow phosphorus poisoning in current toxicology texts. The time lag between swallowing of the poison and onset of symptoms varied from a few minutes to 24 h. Garlic odor, mucosal burns, and phosphorescent vomitus or feces occurred in only a small percentage of cases. Diarrhea was not a presenting complaint. Initial symptoms were referable to the gastrointestinal tract, central nervous system, or both. Mortality rates were 23% for patients who had early symptoms of vomiting or abdominal pain; 73% for those where the first manifestation of intoxication was restlessness, irritability, drowsiness, stupor, or coma; and 47% for patients who had a combination of these GI and CNS symptoms initially. Applying standard diagnostic criteria for yellow phosphorus poisoning to patients who have consumed yellow phosphorus pastes may result in serious diagnostic errors.
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PMID:Acute yellow phosphorus poisoning from pesticide pastes. 727 76

The behaviour of 48 children ranging from weeks to eight years was observed and compared after four different anaesthesia methods. Either ethrane or halothane was used with or without induction with ketamine i.m. (5 mg/kg bodyweight). Restlessness, the depth of postanaesthetic sleep, shivering, muscle rigidity and vomiting were evaluated every 15 min. up to one hour postoperatively using a graduation from 1--4. Ketamine combined with halothane showed significantly less postoperative restlessness than all other methods. No statistically proven differences were seen in the other criteria, which were noticed more than once. The psychic effects as well as the practical clinical application of this method are discussed.
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PMID:[Steal-induction with ketamine in childhood: comparison of the postanaesthetic period (author's transl)]. 746 56


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