Forty male students were each exposed on two occasions to four hours of inhalation of either air or 500 ppm nitrous oxide with or without 15 ppm halothane in air. Immediately following exposure, a battery of tests of perceptual, cognitive and motor skills was administered. Compared with responses after breathing of air, those after exposure to nitrous oxide and halothane showed significant decrements in performances of a task in which attention was divided between auditory and visual signals, a visual tachistoscopic test, and memory tests involving digit span and recall of word pairs. Subjects exposed to nitrous oxide alone scored
significantly lower on the digit-span test only.
(Key words: Anesthetics, Volatile: halothane; Anesthetics, gases: nitrous oxide; Psychologic function.)
1. Linde HV, Bruce DL: Occupational exposure of anesthetists to halothane. nitrous oxide and radiation. Anesthesiology 30:363-368, 1969.
2. Corbett TH: Retention of anesthetic agents following occupational exposure. Anestl, Analg (Cleve) 52:614-Gli, 1973.
3. Salvini M, Binaschi S, Riva M: Evaluation of the psychophysiological functions in humans exposed to trichloroethylene. Br J Ind Med 28:293-295, 1971.
4. Bruce DL: A simple way to vent anesthetic gases. Anesth Analg (Cleve) 52:595-598, 197.3
Early Life Exposure in Mexico to Environmental Toxicants (ELEMENT) Project.
PURPOSE: The Early Life Exposure in Mexico to ENvironmental Toxicants (ELEMENT) Project is a mother-child pregnancy and birth cohort originally initiated in the mid-1990s to explore: (1) whether enhanced mobilisation of lead from maternal bone stores during pregnancy poses a risk to fetal and subsequent offspring neurodevelopment; and (2) whether
Combined impact of exercise and temperature in learning and memory performance of fluoride toxicated rats.
In previous studies, we investigated a link between high fluoride exposure and functional IQ deficits in rats. This study is an extension conducted to explore the combined influence of physical exercise and temperature stress on the learning ability and memory in rats and to assess whether any positive modulation could
Fluoride Exposure and Concurrent Cognitive Outcomes in 7-15 Year Old Children from Mexico City, Mexico.
BACKGROUND: Recent studies have reported an inverse association between fluoride exposure and IQ in children, but most were ecological in design. Few involved personal measures of exposure or adjusted for confounders. METHODS: This study utilized archived urine samples and data from offspring who participated in the Early Life Exposures in Mexico
Investigation and evaluation on intelligence and growth of children in endemic fluorosis and arsenism areas.
“This study investigated the effects of arsenism and fluorosis on the mental ability (MA) and growth of children living in areas endemic for arsenism, fluorosis , or both. The children were divided into high arsenic/fluoride group (group 1), high fluoride group (group 2), high arsenic group (group 3), and control
Effects of fluoride exposure on performance in water labyrinth and monoamine neurotransmitters of rats
Objective To study the effects of fluoride exposure on performance in water labyrinth and monoamine neurotransmitters of rats. Methods Forty SD rats were divided randomly into 4 groups:control group,high-fluoride exposed group,medium-fluoride exposed group and low fluoride exposed group.These 4 groups of rats were exposed to different concentrations (0,5,10,20 mg/kg) of sodium
Related Studies :
Fluoride Affects Learning & Memory in Animals
An association between elevated fluoride exposure and reduced intelligence has now been observed in 65 IQ studies. Although a link between fluoride and intelligence might initially seem surprising or random, it is actually consistent with a large body of animal research. This animal research includes the following 45 studies (out
Fluoride & IQ: 68 Studies
As of February 2021, a total of 76 studies have investigated the relationship between fluoride and human intelligence. Of these investigations, 68 studies have found that elevated fluoride exposure is associated with reduced IQ in humans, while over 60 animal studies have found that fluoride exposure impairs the learning and/or
Fluoride: Developmental Neurotoxicity.
Developmental Neurotoxicity There has been a tremendous amount of research done on the association of exposure to fluoride with developmental neurotoxicity. There are over 60 studies reporting reduced IQ in children and several on the impaired learning/memory in animals. And there are studies which link fluoride to Attention Deficit Hyperactivity Disorder. Teaching
Fluoride's Effect on Fetal Brain
The human placenta does not prevent the passage of fluoride from a pregnant mother's bloodstream to the fetus. As a result, a fetus can be harmed by fluoride ingested pregnancy. Based on research from China, the fetal brain is one of the organs susceptible to fluoride poisoning. As highlighted by the excerpts
Fluoride's Direct Effects on Brain: Animal Studies
The possibility that fluoride ingestion may impair intelligence and other indices of neurological function is supported by a vast body of animal research, including over 40 studies that have investigated fluoride's effects on brain quality in animals. As discussed by the National Research Council, the studies have consistently demonstrated that fluoride, at widely varying concentrations, is toxic to the brain.
Related FAN Content :