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Proprietary sleep aids and sedatives can cause delirium, coma and occasionally death in children and adults. The constituents in sleep aids that significantly effect central nervous system activity are bromides, methapyrilene, pyrilamine and scopolamine (hyoscine). Constituent proportions and mixtures vary greatly at different times since manufacturers make frequent adjustments. The effects of toxicity resulting from the misuse of ethylenediamines include nausea, vomiting, blurred vision, incoordination, tremors, dry mouth, constipation and an acute poisoning syndrome. Management of adverse reactions produced by either methapyrilene or pyrilamine consists of dosage reduction or discontinuation. The acute poisoning syndrome requires implementation of general symptomatic and supportive principles.
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PMID:Sleep aids and sedatives. 33 Sep 11

The case report is presented of a 24-year-old male who developed the clinical signs and syptoms of pseudotumour cerebri (intracranial hypertension) twice during the course of protracted rejection 1 and 4 months after renal transplantation. Clinically, headache, nausea, hypertensive crisis and, finally, severe coma with an acute mid-brain syndrome was observed. Neurologically a mild left-sided hemiparesis was found on the second occasion. Examination of the fundi revealed bilateral papilloedema. Electroencephalograms showed pathological changes of a diffuse nature, later followed by abnormal delta range activity in the right frontotemporal projection. The withdrawal of corticosteroid therapy may have been responsible for the pseudotumour cerebri in this case.
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PMID:[Recurrence of pseudotumour cerebri (intracranial hypertension) after renal transplantation (author's transl)]. 34 35

It is today's general medical opinion that children's diabetes mellitus was uncommon in the past. It was generally admitted at that time the initail stages were so sudden as to make difficut its early diagnosis. It's increased incidence is at present an alarming truth; however, a parallel increase of diabetic coma or of mulminant types has rather dropped. Diabetes may be diagnosed by just considering the main symptoms at the onset which are polydipsia, polyuria and weight loss. If an early diagnosis is not made, acidosis (abdominal pain, nausea, vomiting) may appear within a few days or weeks followed by coma (Kussamul's acidotic respiration and dehydration). Coma may be avoided by an early diagnosis and a life may be saved. It must be stressed that an important percentage of children and adolescents show a slow and gradual evolution (week or months) of their diabetes: gradual weight loss, sometimes with noticeable polyphagia, occasional enuresis, but without other associated symptoms. Asymptomatic, intermittent glucosurias are also frequent; they vary in magnitude an almost always they appear without ketonuria and with fasting normal glycemia. According to our experience they may precede in weeks or months the clinical manifestations of the disease. Postprandial glycemia is a sure diagnostic resource; it is of greater trustworthines than fasting glycemia; therefore we advise it as a routine diagnostic procedure which we recommend widely. In uncertain situations, the oral glucose tolerance test is advisable.
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PMID:[Diabetes mellitus in childhood and adolescence. Clinical types]. 48 58

Water hemlock is a ubiquitous plant that can be mistaken for a turnip as in the case reported. Oral ingestion causes an explosive illness consisting of nausea, vomiting, abdominal cramps, and grand mal seizures that can progress to cyanosis and death. In the reported case a 30-year old man was found semi-comatose some 75 minutes after ingesting a "turnip". The history revealed profuse emesis shortly after eating lunch that changed from bile to frank blood. There was a mean orthostatic blood pressure change of 30 torr, with an increase in the heart rate of 10%. Neurologic examination revealed a lethargic patient. Following administration of 4 liters of Ringer's lactate the patient's blood pressure stabilized and with continued isotonic fluid maintenance he improved rapidly. This case indicates that appropriate management should be directed toward protecting the patient's airway from gastric aspiration, restoring the intravascular and extracellular volume deficit, and controlling cerebral edema.
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PMID:A case of water hemlock poisoning. 49 28

A case of chlorpropamide-induced, symptomatic hyponatremia in a diabetic patient is reported. The hyponatremia was associated with loss of appetite, nausea, and vomiting. These symptoms caused reduced food intake which provoked severe hypoglycemia with disturbed consciousness. The hyponatremia developed when the chlorpropamide doses were increased from 400 to 600 mg/day. Withdrawal of chlorpropamide was followed by remission of hyponatremia. Chlorpropamide-induced hyponatremia is a rare complication and is due to an antidiuretic effect of chlorpropamide caused by increased secretion of adiuretin and potentiation of the effect of chlorpropamide caused by increased secretion of adiuretin and potentiation of the effect of adiuretin in the tubuli of the kidney. This case report and the analysis of 18 published cases in the literature show the following characteristics for chlorpropamide-induced hyponatremia: (1) Hyponatremia is a rare complication in the treatment of diabetics with chlorpropamide. The patients typically are female and over sixty. The dosage of chlorpropamide usually was 500 mg daily or even more. (2) Hyponatremia is often unrecognized for a long time because the symptoms are not specific. The characteristic symptoms include loss of appetite, nausea, vomiting, abdominal pain, confusional state and, rarely, convulsions and coma. Recovery occurs spontaneously after withdrawal of the drug. (3) The incidence of this type of hyponatremia is increased in cases of preexisting tendency to water retention such as heart failure and renal failure, and in cases of diuretic therapy. In the light of these findings, the authors believe that chlorpropamide is no longer a drug of choice in the treatment of diabetic women, especially in cases of preexisting tendency to water retention and in diuretic therapy. In such cases, a sulfonylurea without antidiuretic effect is to be preferred.
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PMID:[Hyponatremia and hypoglycemia after treatment with chlorpropamide. Case histories with review of the literature on 18 cases of chlorpropamide induced hyponatremia]. 66 98

An analysis has been made of 2144 consecutive cases of latrodectism (envenomation by the red-back spider, Latrodectus mactans hasselti) reported to the Commonwealth Serum Laboratories. In the last eight years, notifications have averaged 240 cases per annum. Bites, usually on the extremities (74%), occurred most frequently in the summer months, and in the afternoon or evening. Most victims (79%) were aged between 18 and 50 years and 64.4% of them were males. Males are still often bitten on the genitals or buttocks (9.7% of cases). Local pain, redness and swelling were the most common symptoms, although significant pain was felt at other sites in 39% of the cases. The regional lymph nodes often became swollen and tender within 30 minutes. General effects included nausea, vomiting and sweating, but coma and respiratory failure were very uncommon, probably because of use of specific antivenom. This was administered within 24 hours of the bite in 92% of cases, and within two hours in 70%. Although 11 anaphylactic reactions (0.54%) were reported, no deaths resulted either from the venom or from reactions to the antivenom. Few delayed serum reactions (1.7%) were recorded. The action of the venom is described and the management of red-back spider bite is outlined.
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PMID:Survey of 2144 cases of red-back spider bites: Australia and New Zealand, 1963--1976. 73 70

In addition to asking their patients about recent foreign travel, Canadian doctors need to be aware of what features to ask about in considering imported illnesses. Of these illnesses, malaria is one of the most common and serious. Because of its cerebral renal, pulmonary and intestinal complications, falciparum malaria must be distinguished from non-falciparum forms. Anyone with a fever who has arrived recently from an endemic area should be tested for malaria. In addition, headache, malaise, myalgias, arthralgias, low back pain, nausea, vomiting, diarrhea or cough should raise suspicion. Malaria should be remembered as a cause of coma. Persons taking any form of drug prophylaxis for malaria are not protected absolutely and those who are semi-immune can become severely ill occasionally.
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PMID:Symptoms and signs of malaria. 78 78

Magnesium deficiency can occur in congestive heart failure, after diuresis with furoxemide, ethacrynic acid and mercurials, and with digitalis intoxication, diabetic acidosis, acute and chronic alcoholism, delerium tremens, cirrhosis, malabsorption syndromes, protracted postoperative cases, open heart surgery, the diuretic phase of acute tubular necrosis, and with hypoparathyroidism, primary aldosteronism, juxta-glomerular hyperplasia and pancreatitis. Two cases of serious ventricular arrhythmias associated with magnesium depletion are described. Clinical manifestations are vague but center around neurologic symptoms such as weakness, tremors, stupor, coma, nausea, vomiting and anorexia. Serious cardiac arrhythmias also occur with magnesium depletion. Magnesium appears to be very useful in hypomagnesemic or digitalis-toxic tachyarrhythmias. Magnesium may also be valuable in normomagnesemic tachyarrhythmias. Ten to fifteen milliliters of a 20 percent magnesium sulfate solution, given intravenously over 1 minute, followed by a slow 4 to 6 hour infusion of 500 ml of 2 per cent magnesium sulfate in 5 per cent dextrose in water is recommended. Recurrence of arrhythmias is common and a second infusion of magnesium sulfate may be necessary. Hypermagnesemia occurs frequently in renal insufficiency, and magnesium therapy may then be contraindicated. Serum levels above 5.5 meq/liter should be avoided. Loss of deep tendon reflexes and a decrease in respiratory rate can be used as guides to magnesium therapy. A plea is made for frequent analysis of serum magnesium so that more knowledge can be gained regarding this important biologic element in cardiovascular disorders.
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PMID:Magnesium deficiency and cardiac disorders. 80 29

Although old or recent infarcts of a cerebellar hemisphere in the territories of the posterior inferior (PICA), superior, or anterior inferior cerebellar arteries are commonplace autopsy findings, in no case have corresponding clinical symptoms been clearly identified. We have studied three cases, two clinocaopthologically and one clinicosurgically, in which an acute infarct involving only the cerebellum lay in the PICA territory distal to the branches to the medulla oblongata. The clinical manifestations consisted of rotatory dizziness intensified by motion, nausea, vomiting, imbalance, and nystagmus. In two cases, the clinical diagnosis had been a benign labyrinthine disorder. Recognition of a syndrome corresponding to cerebellar infarction in the PICA territory is important insofar as it assists in the differential diagnosis of dizziness. It becomes of crucial importance when cerebellar infarction is the prelude to cerebellar swelling and brain stem conpression leading to coma and death unless surgically relieved.
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PMID:Acute cerebellar infarction in the PICA territory. 113 Oct 70

Hyperthermia has recently been recognized as a manifestation of hypoglycemia. We describe two episodes of hypoglycemia associated with nausea, vomiting, chills, and impaired consciousness which were followed by marked hyperthermia. We suggest that the hyperthermia may result from excessive reaction to preceding hypothermia caused by the hypoglycemia. We would like to alert the clinician to the possibility of a previous, severe hypoglycemic episode in any diabetic patient with hyperthermia and coma.
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PMID:Marked hyperthermia as a manifestation of hypoglycemia in long-standing diabetes mellitus. 115 46


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