Own data and analysis of previous publications show that situations where accidental ingestion of corrosive substances by children may have happened are frequent, but severe corrosive esophagitis leading to perforation or stricture formation is very rare. In case of suspected esophageal injury, esophagoscopy and glucocorticoid treatment become necessary. The evaluation of the initial symptoms in patients from our own material and from the literature indicates that all children with serious esophageal burns had one or more of the following symptoms: visible burns in the oral cavity, hypersalivation, retching, vomiting, retrosternal or epigastric pain, cardiovascular collaps, airway stenosis. Hence, children with an uncertain history of ingestion and without any of these symptoms need not be treated. After ingestion of liquid substances, but never of dry or granular products, lesions in the esophagus without accompanying burns in the oral cavity were observed. The evaluation of 1158 cases of accidental ingestions of several types of household products and a collection of data from the literature on the causticity of these substances shows that cleaners containing mainly detergents and phosphates (with pH values generally between 9 and 11), and household bleaches on sodium hypochlorite basis, are relatively harmless. Drain cleaners (NaOH), decalcifiers (formic acid) and detergents for automatic dish washing machines (metasilicates) are very caustic and are responsible for the majority of serious accidents in children.

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In vitro investigations have shown that the adsorption capacity of activated charcoal ('Kohle-Compretten', 'Ultracarbon', E. Merck, Darmstadt, FRG) is just as high as that of 'Fuller's earth' (Surrey powder, Laporte Industries Ltd., Luton, GB) or 'Bentonite BP W.B. (Steetley Minerals Ltd., Milton Keynes, GB). Fuller's earth ('Fullererde') from another manufacturer has had very poor adsorption properties and is thus not suitable for the treatment of paraquat poisoning. Animal experiments have shown that the curative effect of activated charcoal given 0.5, 1, 2, and 3 h after ingestion of 200 and 300 mg paraquat/kg body weight is equally as good or even better than that of 'Fuller's earth' or 'Bentonite BP W.B' Activated charcoal is a substitute of equal value to these mineral soils.

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In a series of 53 fenfluramine intoxications (15 taken from the literature), 10 were lethal after doses of 28.7--70 mg/kg of body weight. Cardiac arrest occurred 1--4 hr after ingestion in 9 cases; all these 9 patients died. Two out of 3 patients with more than 15 mg/kg had coma and convulsions. Other frequent signs were mydriasis, tachycardia, and rubor of the face. The additional signs of nystagmus, hypertonia, trismus, hyperreflexia, clonus, excitation, hyperthermia, and sweating define the clinical syndrome of fenfluramine intoxication. Symptoms begin 30--60 min after ingestion and can persist during several days. Early gastric lavage, instillation of activated charcoal, diazepam in case of seizures, chlorpromazine for malignant hyperthermia, propranolol for extreme tachycardia, and lidocaine in the event of ventricular extrasystoles are recommended. If trismus is a prominent sign, muscle relaxants must be given before gastric lavage can be done. The relatively benign course after survival of the first 4 hr suggests supportive therapy only in the later phase of intoxication.