Comprehensive drug screening in decision making of patients attending the emergency department for suspected drug overdose.

OBJECTIVES: This study aimed to evaluate the usefulness of a comprehensive drug screening method as a first line diagnostic tool on clinical decision making in patients attending an emergency department for suspected drug overdose in terms of agreement between physicians on patients' disposal. METHODS: Five emergency physicians retrospectively evaluated the records of 142 adult patients, admitted to the emergency department of a community hospital for suspected drug overdose. They were asked for an expert opinion on patients' disposal at the end of the observation period, based on paired records, with/without the results of a comprehensive drug screening. RESULTS: In the absence of the drug screening, a very poor agreement (kappa statistics) was observed between physicians. When the drug screening was available, the interobserver agreement for decision on patients' disposal increased to the fair to good range (global agreement: from 0.238 (0.019) to 0.461 (0.020) (mean(SE)); p<0.001). The agreement also increased when admission to an intensive care unit, to a general ward, and discharge from hospital were separately analysed. The availability of drug screening would have saved 21.7% of hospital admissions and 53.3% of high dependency and/or intensive care unit admissions. CONCLUSION: Comprehensive drug screening adds to decision making for patients attending an emergency department for suspected drug overdose, improving agreement among physicians on patients' disposal and potentially saving hospital resources.

Pancreatic involvement associated with tricyclic overdose.

To our knowledge, only two cases of pancreatic involvement after tricyclic overdose have so far been described in the literature. We report another case of pancreatic involvement after tricyclic antidepressant overdose. Patient. A 30-year-old female was admitted to our Emergency Room after having ingested 800 mg of amitriptyline in a suicide attempt. On the second day of hospitalization, high serum values of amylase 823 IU/l (normal values < 220 IU/l) and lipase 1054 IU/l (normal value < 270 IU/l) were found. The pancreas appeared normal upon ultrasonography. Serum pancreatic enzymes further increased on the third day of hospitalization, peaked on the fourth day and then progressively decreased. Repeated ultrasonography examination did not show any alteration in the pancreatic gland. The patient was discharged eight days after admission. Fifteen days after the overdose episode, the ultrasonographic examination still did not show any alteration of the pancreatic gland, and serum amylase and lipase were 403 IU/l and 239 IU/l, respectively. In our opinion, serum pancreatic enzymes should be determined in patients with tricyclic overdose in order to detect possible pancreatic involvement.

Carbon monoxide poisoning: potentially preventable cases.

UNLABELLED: The objective of the study was to describe epidemiological and clinical data regarding acute carbon monoxide (CO) poisoning in an urban area of North Italy. 95 consecutive adult patients admitted to Milan and Turin Poisons Control Centres (PCC) for CO poisoning between October 1993 and March 1995 were enrolled into the study. Epidemiological and medical parameters were recorded in a standardised collection data sheet, which included age, sex, circumstances of poisoning, severity grading (0-3), blood HbCO level upon admission. RESULTS: 86 cases of CO poisoning (90.5%) were due to accidental exposures, 9 to intentional suicide attempts. A majority of cases occurred in late autumn through winter months, from October to February. The highest proportion of accidental CO poisoning cases (92%) occurred in the household setting. In 57 cases the acute severity grading was higher than 1 (median 2); blood HbCO level upon admission was 40% in 16% of the cases (mean 31.6%--median 32.7%). CONCLUSIONS: Carbon monoxide exposure represents a significant cause of severe but potentially preventable accidental poisoning. The study indicates the need for public education campaigns aimed to warn people against the silent killer at home, and to promote preventive measures. The clinical course of CO poisoning is often severe. A standardised collection data system, to record all the cases of acute CO intoxication in Emergency Departments, can help evaluate the real incidence and clinical significance of this poisoning.

Myocardial damage and rhabdomyolysis associated with prolonged hypoxic coma following opiate overdose.

CASE REPORT: We report a case of biopsy proven myocardial damage after opiate-induced rhabdomyolysis. Myocardial biopsy showed focal lesions formed by small mononuclear inflammatory cells with a few neutrophils, associated with degenerated and necrotic myocardial fibers, interstitial edema and congestion of intrinsic blood vessels. These findings were similar to those seen with other drug overdoses if combined with strenuous muscular effort or hypoxic coma. We hypothesize that myocardial damage is a consequence of intracapillary myohypoxia associated with prolonged hypoxic coma following opiate overdose.

Whole bowel irrigation after delayed release fenfluramine overdose.

We report a patient who intentionally ingested a large amount of delayed release fenfluramine and was successfully treated with whole bowel irrigation. To our knowledge this is the first case of this kind to be reported in the literature. This therapeutic method, commonly used for acute poisonings with enteric coated and other modified release pharmaceuticals appears effective and risk-free in the treatment of delayed release fenfluramine overdose.

[Cocaine poisoning in acute renal insufficiency]. / Intossicazione da cocaina e insufficienza renale acuta.

We report the case of a young man who developed acute renal failure after ingestion of cocaine wrapped in foil. We did not find either clinical or clear biochemical signs of rhabdomyolysis. The possible role of high blood cocaine level in the development of acute renal failure has been speculated and a direct vasoconstrictive effect on renal vessels followed by acute tubular necrosis has been hypothesized.

[Rhabdomyolysis during acute poisoning with drugs and narcotics. Experience with 7 clinical cases]. / Rabdomiolisi in corso di intossicazione acuta da farmaci e sostanze stupefacenti. Esperienza su 7 casi clinici.

Numerous and extremely varied conditions (intense muscular activity, ischemia, metabolic and genetic disorders, infections, immunological diseases and toxic causes) may play a role in the genesis of non-traumatic rhabdomyolysis. Over the past years there has been an increased number of reports of forms due to drug or narcotic intoxication. Seven cases of rhabdomyolysis are reported in patients admitted to emergency wards in a state of coma due to heroin overdose (4 cases), cocaine overdose (1 case), carbamazepin (1 case), and tricyclic anti-depressives (1 case). In all cases it was possible to hypothesise a multifactorial pathogenesis of the disease in which other factors, such as acidosis, hypoxia, hypothermia and compression of the muscle mass during coma, were associated with the direct toxic damage caused by the drug. The most frequent complication was acute renal failure. One case of myocardial involvement with non-Q infarction characteristics was also observed.

Anticonvulsant-induced chronic pancreatitis. A case report.

We report the case of a young man suffering from epilepsy who developed chronic calcified pancreatitis after ten years of therapy with the anticonvulsant drugs carbamazepine and phenytoin. Long-term anticonvulsant drug therapy may have a contributory role in the development of chronic pancreatitis by chronic stimulation of cytochromes P-450.

[Myocardial involvement in rhabdomyolysis caused by acute heroin intoxication]. / Interessamento miocardico in corso di rabdomiolisi da intossicazione acuta da eroina.

It is well known that heroin overdose may cause rhabdomyolysis. Sometimes a myocardial involvement complicates its course. We report a case of heroin intoxication followed by rhabdomyolysis associated with myocardial injury, with symptoms, laboratory findings, ECG and echocardiography features of non-Q wave infarction. However, a 201 Tl myocardial scintigraphy, performed after patient discharging, did not show any abnormality. We think that heroin has a direct myotoxic effect on both myocardium and skeletal muscle. Yet we cannot exclude that hypoxia, acidosis, vasoconstrictive substances released by muscle necrosis, or hypersensitivity reactions associated with heroin or some of its adulterants are involved in myocardial injury.

Exocrine pancreatic involvement in Wegener's granulomatosis. A case report.

A rare case of exocrine pancreatic damage in a patient with Wegener's granulomatosis is reported. The pancreatic amino acid consumption test, a new tubeless technique, revealed exocrine pancreatic insufficiency before and after immunosuppressive therapy. The presence of exocrine pancreatic insufficiency in this patient raises the possibility of pancreatic involvement in Wegener's granulomatosis.