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We report a case of a large labetalol overdose in an eight-month-old infant that was being treated for hypertension following surgery for coarctation of the aorta. Labetalol, both alpha and beta adrenergic blocking agent was used for treating postoperative hypertension. By mistake, the patient was given an extremely high dose of labetalol intravenously (17.2 mg·kg−1 ). Remarkably, the medication error had a surprisingly limited clinical effect on the infant who survived the incident. We discuss the pharmacokinetic, pharmocodynamic and possible explanations for this fortunate turn of events. 相似文献
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Symptomatic hypoglycaemia in 411 type 1 diabetic patients 总被引:4,自引:0,他引:4
The frequency of symptomatic hypoglycaemic episodes was studied in 411 randomly selected conventionally treated Type 1 diabetic out-patients. Between two consecutive visits to the out-patient clinic each patient filled in a questionnaire at home. The number of hypoglycaemic episodes was then recorded prospectively in a diary for 1 week. From the questionnaires, the (retrospective) frequencies of mild and severe symptomatic hypoglycaemia were 1.6 and 0.029 episodes patient-1 week-1. From the diaries, the (prospective) frequencies of mild and severe hypoglycaemic episodes were 1.8 and 0.027 patient-1 week-1. Symptomatic hypoglycaemia was more frequent on working days than during weekends (1.8:1) and more frequent in the morning than during the afternoon, evening, and night (4.5:2.2:1.4:1). The symptoms of hypoglycaemia were non-specific, heterogeneous, and weakened with increasing duration of diabetes. During their diabetic life, 36% of the patients had experienced hypoglycaemic coma. The frequency of hypoglycaemia was positively, but only weakly, correlated with insulin dose, number of injections, percentage unmodified insulin of the total dose, and HbA1c (mild hypoglycaemia only). The frequency was also negatively, but weakly, correlated with age and HbA1c (episodes with coma only), but not correlated with sex, duration of diabetes, or patients' ratings of worries about mild and severe hypoglycaemia. 相似文献
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Absorption of soluble and isophane semi-synthetic human and porcine insulin in insulin-dependent diabetic subjects 总被引:1,自引:0,他引:1
S Pramming T Lauritzen B Thorsteinsson K Johansen C Binder 《Acta endocrinologica》1984,105(2):215-220
A double-blind cross-over study of the sc absorption of radiolabelled semi-synthetic human (SHI) and purified porcine (PPI) insulin was made. Absorption of both isophane (n = 10) and soluble insulin (n = 8) was studied. There was no significant difference between the disappearance from the injection site, the plasma free insulin concentrations, or blood glucose levels after sc injection of the isophane preparations. A faster disappearance of the soluble SHI (as judged from T/50 and AUC) was found (both P-values less than 0.01). However, no difference was observed between the plasma insulin concentrations at any time point (P less than 0.05). Blood glucose levels showed no statistical differences between the two soluble preparations. The data indicate minor differences between the pharmacokinetics of SHI and PPI, but these seem of no clinical importance. 相似文献
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Boomsma F Pedersen-Bjergaard U Agerholm-Larsen B Hut H Dhamrait SS Thorsteinsson B van den Meiracker AH 《Diabetologia》2005,48(5):1002-1007
Aims/hypothesis Plasma semicarbazide-sensitive amine oxidase (SSAO) is elevated in patients with type 1 and type 2 diabetes and has been implicated in the pathophysiology of diabetic late complications. The regulation of SSAO production remains unknown. We studied correlations between plasma SSAO activity and parameters associated with diabetic late complications.Methods Plasma SSAO was measured in a well-characterised group of 287 patients with type 1 diabetes. Standard statistical methods were used to investigate correlations with clinical parameters and components of the renin–angiotensin system.Results Overall, plasma SSAO was elevated, at 693±196 mU/l (mean±SD; normal controls 352±102 mU/l). Plasma SSAO was higher in the group with late complications or hypertension, and in patients treated with ACE-inhibitors. In univariate analysis a significant positive correlation (p<0.001, r=0.27) was found between plasma SSAO and serum ACE activity in patients untreated with ACE inhibitors or angiotensin II receptor antagonists (n=221), but plasma SSAO did not differ by ACE I/D genotype. Plasma SSAO correlated positively with duration of diabetes, HbA1c and plasma renin, and negatively with plasma angiotensinogen and body mass index. A multiple regression analysis including these variables resulted in serum ACE activity (p<0.001), ACE genotype (negatively, p<0.001) and HbA1c (p=0.023) as explaining variables.Conclusions/interpretation Results suggest that a common factor is involved in the regulation of both plasma SSAO and serum ACE, which is different from the genetic determination of ACE activity. 相似文献
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