Alimentary

The alimentary symptoms may be overshadowed by neuromuscular dysfunction, accompanied by signs of motor weakness that may progress to paralysis of the exterior muscles or the wrist (wrist drop), and less often, of the ankles (foot drop). Encephalopathy, the most serious result of lead poisoning, frequendy occurs in children as a result of pica, ie, ingestion of inorganic lead compounds in paint chips this rarely occurs in adults. Nephropathy has also been associated with chronic lead poisoning (147). The toxic effects of lead may be most pronounced on the developing fetus. Consequendy, women must be particulady cautious of lead exposure (148). The U.S. Center for Disease Control recommends a blood level of less than 10 p.m per 100 mL for children. 

Because the regions of the alimentary tract vary widely ia pH and chemical composition, many different commercial formulations of barium sulfate are available. The final preparations of varyiag viscosity, density, and formulation stabiUty levels are controlled by the different size, shape, uniformity and concentration of barium sulfate particles and the presence of additives. The most important additives are suspending and dispersiag agents used to maintain the suspension stabiUty. Commercial preparations of barium sulfate iaclude bulk and unit-dose powders and suspensions and principal manufacturers are E-Z-EM (Westbury, New York), Lafayette-Pharmacol, Inc. (Lafayette, Indiana), and Picker International, Inc. (Cleveland, Ohio). 

Swallowing. If it is sufficiently irritant or caustic, a swallowed material may cause local effects on the mouth, pharynx, esophagus, and stomach. Additionally, carcinogenic materials may induce tumor formation in the alimentary tract. Also, the gastrointestinal tract is an important route by which toxic materials are absorbed. The sites of absorption and factors regulating absorption have been reviewed (42,43). 

Treatment. Treatment of poisoning from soluble barium salts may be preventive or curative (47,51). Preventive treatment involves inhibition of intestinal absorption by administering such soluble sulfates as magnesium or sodium, causing precipitation of barium sulfate in the alimentary tract. 

The most serious ha2ard of repeated exposure to chloroform inhalation is injury to the Hver and kidneys. Evidence indicates that in humans, repeated exposure to atmospheric concentrations well below the odor threshold may cause such injury. Industrial experience has shown that daily exposure to concentrations below 100 ppm may result in a variety of nervous system and alimentary tract symptoms, in the absence of demonstrable evidence of injury (39). Injury to the Hver is similar to but somewhat less severe than that caused by carbon tetrachloride. Kidney injury is usually associated with but less severe than Hver injury. 

Health Hazards Information - Recommended Personal Protective Equipment Suitable respirator (For dust) rubber gloves chemical goggles or face shield Symptoms Following Exposure Inhalation of dust causes irritation of nose and throat. Ingestion can cause irritation or corrosion of the alimentary tract, circulatory collapse, and toxic nephritis. Contact with eyes or skin causes irritation General Treatment for Exposure INHALATION move to flesh air if exposure has been severe, gel medical attention. 

Nfthr-. nutritive, nutrient, alimentary, -agar, m. nutrient agar, -aquivalent, n. nutritive equivalent or value, -biatt, n. (Bot.) storage leaf, -boden, m. nutrient medium, nutrient substrate, culture medium, -bouillon, -briUie,/. nutrient broth, nahren, v.t. feed nourish support. — nah-rend, p.a. nourishing, nutritive, nutritious, nutrient. 

Nahr-fliissigkeit,/. nutrient (or nutritive) liquid or fluid, -gang, m. alimentary canal nutrient duct, -gelatine, /. nutrient gelatin, -ge-schaft, n. nutrition, -gewebe, n. nutrient tissue. 

Nahrungs-aufnahme, /. reception or absorption of food, -bedarf, m. food requirement, -brei, m. chyme, -dotter, m. (Biol.) food yoljc, deutoplasm, -fliissigkeit, /. nutritive liquid chyle, -kanal, m. alimentary canal, -milch, /. (Physiol.) chyle. 

Nahrungs-rohr, n., -rShre, /. alimentary canal, -sait, m. nutrient juice specif., (Med.) chyle, (Bot.) sap. -stoff, m. nutritive substance, nourishment, food. -stSrung, /. nutritional disturbance, -teilchen, n. nutritive element, -vergiftung, /. food poisoning, -wert, m. nutritive value, -zufuhr, /. food intake. 

Alimentary biotin deficiency is rare. It may, however, occur in patients on long-term parenteral nutrition lacking biotin or in persons who frequently consume raw egg white. Raw egg white contains a biotin-binding glycoprotein, called avidin, which renders biotin biologically unavailable. Pharmacological doses of the vitamin (1-10 mg/d) are then used to treat deficiency symptoms. There are no reports of toxicity for daily oral doses up to 200 mg and daily intravenous doses of up to 20 mg [2]. 

Alimentary tract and metabolism Blood and blood-forming organs Cardiovascular system Dermatologicals... 

The pathogenesis of rosacea is multifactorial. Vascular hyperactivity is the primary phenomenon that is complicated by inflammatory changes. Endocrine, psychological, pharmacological, immunological, infectious, thermal and alimentary factors contribute to produce vascular instability and tissue damage (Fig. 17.1). The role of Helicobacter pylori is still being discussed. 

The characteristic of this genus is that its members are anaerobes. They occur in the alimentary tract of humans and animals and have been associated with wound infections, especially after surgery. Bacteroidesfragilis is a frequently encountered member of the genus. 

Picomaviruses Poliovirus Naked icosahedral particles 28 nm in diameter One of a group of enteroviruses common in the gut of humans. The primary site of multiplication is the lymphoid tissue of the alimentary tract. Only rarely do they cause systemic infections or serious neurological conditions like encephalitis or poliomyelitis... 

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