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Endogenous analogs of inhaled anesthetics are compounds that the body produces and that have the properties and similar mode of action of inhaled anesthetics. [9] Among the gases in the human body, carbon dioxide is among the most abundant and produces anesthesia from insects to humans. [ 10 ]
The effects of inhalants range from an alcohol-like intoxication and intense euphoria to vivid hallucinations, depending on the substance and the dose. Some inhalant users are injured due to the harmful effects of the solvents or gases or due to other chemicals used in the products that they are inhaling.
Minimum alveolar concentration or MAC is the concentration, often expressed as a percentage by volume, of a vapour in the alveoli of the lungs that is needed to prevent movement (motor response) in 50% of subjects in response to surgical (pain) stimulus.
Several experimental studies in rats indicate that chronic exposure of pregnant females to nitrous oxide may have adverse effects on the developing fetus. [123] [124] [125] At room temperature (20 °C [68 °F]) the saturated vapour pressure is 50.525 bar, rising up to 72.45 bar at 36.4 °C (97.5 °F)—the critical temperature.
Alcohol inhalation is a method of administering alcohol directly into the respiratory system, with aid of a vaporizing or nebulizing device or bag. It is chiefly applied for recreational use, when it is also referred to as alcohol smoking, but it has medical applications for testing on laboratory rats, and treatment of pulmonary edema and viral pneumonia.
Inhalation of air, as part of the cycle of breathing, is a vital process for all human life.The process is autonomic (though there are exceptions in some disease states) and does not need conscious control or effort.
Simplified control circuit of human thermoregulation. [8]The core temperature of a human is regulated and stabilized primarily by the hypothalamus, a region of the brain linking the endocrine system to the nervous system, [9] and more specifically by the anterior hypothalamic nucleus and the adjacent preoptic area regions of the hypothalamus.
The body temperature of a healthy person varies during the day by about 0.5 °C (0.9 °F) with lower temperatures in the morning and higher temperatures in the late afternoon and evening, as the body's needs and activities change. [15] Other circumstances also affect the body's temperature.