Biomedical subjects
Publications and source records attributed to C Henzen.
After the diagnosis of Diabetes mellitus one third of the children suffer from a transient psychological disorder. Diabetic adults have rates of depression between 9% and 27% with macrovascular disease and retinopathy as main risk factors. Causes of apparent insulin resistance are discussed, particularly the omission of insulin to control weight in young women, and the obesity and sedentary lifestyle in type 2 diabetics.
We report electrocardiographic changes mimicking myocardial ischaemia in a 73-year-old man with fatal pneumococcal meningoencephalitis, present the autopsy-confirmed histological picture of extensive focal myocytolysis (contraction band necrosis) without myocardial infarction or myocarditis, and review the contemporary literature. Potentially reversible, probably non-ischaemic myocardial dysfunction may occur in association with acute noncardiac illnesses, such as brain injuries. Biochemical and morphological abnormalities in acutely failing hearts from head-injured organ donors point to specific pathophysiological mechanisms, which are different from heart failure from other causes. Sepsis-related factors may add to the myocardial dysfunction in patients with brain injury from meningoencephalitis.
Endocrine diseases are often diagnosed by history taking and physical examination. We present the clinical features, diagnostic studies und treatment in patients with acromegaly, Paget's disease, hypopituitarism, (Addisonian crisis), hypothyroidism and Graves' disease.
The arteriosclerotic damage of the arterial endothelium is initiated by risk factors like dyslipidemia, hypertension, diabetes mellitus, and smoking, which account for the majority of vascular morbidity and mortality. Interventional studies confirmed the causative role of hyperlipidemia, particularly of the modified LDL-cholesterol. A large number of epidemiological and interventional studies identified hypertension as another risk factor and showed the correlation between lowering blood pressure and the reduction in micro- and macrovascular complications. Diabetes mellitus decreases the life expectancy on average by 10 years, mainly due to cardiovascular disease. However, intensive control of blood glucose and blood pressure achieved a significant and clinically important reduction in death and complications related to diabetes. Smoking is a main risk factor for peripheral arterial disease and causes advanced arterial lesions in the younger people. Novel risk factors have been identified and contribute to the elucidation of the atherogenic process.
Type 2 diabetes mellitus is often associated with other risk factors for atherosclerotic disease, resulting in a marked increase in cardiovascular events and deaths. Combined treatment of hyperglycaemia, dyslipidaemia and hypertension significantly decreases the frequency and severity of diabetic microvascular and macrovascular complications. In a prospective cohort study including 356 type 2 diabetic patients (= 14% of all in-patients during a 6 months' period) the prevalence and treatment of cardiovascular risk factors were determined. Hypertension was diagnosed in 54% of the diabetic patients, albuminuria in 53% and dyslipidaemia in 47%; there were 40 smokers (17%). On admission the mean HbA1c was 7.7 +/- 2.0%, the mean fasting plasma glucose 10.0 +/- 4.2 mmol/l (and 8.9 +/- 3.9 mmol/l, p = 0.03, when discharged), the mean systolic blood pressure was 144 +/- 28 mm Hg (and 131 +/- 20, p < 0.0001, when discharged), and the triglycerides were 2.6 +/- 0.4 mmol/l. 34% of the hypertensive diabetic patients were treated with a combination of anti-hypertensive drugs, 44% of the dyslipidaemic diabetic patients were treated with statins, and 58% of all diabetic patients received aspirin or oral anticoagulation. 23% of the diabetic patients were treated by diet alone, 36% with insulin, 25% with sulfonylureas and 5% with metformin, while 11% were given a combination of antihyperglycaemic medication. In-hospital mortality was 11%. The diabetic patients were discharged on 2.9 +/- 1.7 different drugs. The prevalence of associated cardiovascular risk factors is high in type 2 diabetic patients, and thus a combination of drugs is often warranted. The rate of admissions and in-hospital mortality is high in type 2 diabetic patients.
BACKGROUND: Suppression of the adrenal response is an unpredictable consequence of glucocorticoid treatment. To investigate the kinetics of the adrenal response after short-term, high-dose glucocorticoid treatment, we measured the adrenal response to the low-dose (1 microg) corticotropin stimulation test. METHODS: We studied 75 patients who received the equivalent of at least 25 mg prednisone daily for between 5 days and 30 days. After discontinuation of glucocorticoid treatment, 1 microg corticotropin was administered intravenously, and stimulated plasma cortisol concentrations were measured 30 min later. In patients with a suppressed response to 1 microg corticotropin, the test was repeated until stimulated plasma cortisol concentrations reached the normal range. FINDINGS: The adrenal response to 1 microg corticotropin was suppressed in 34 patients and normal in 41. Subsequent low-dose corticotropin tests showed a steady recovery of the adrenal response within 14 days. In two patients, the adrenal response remained suppressed for several months. There was no correlation between plasma cortisol concentrations and the duration or dose of glucocorticoid treatment. INTERPRETATION: Suppression of the adrenal response is common after short-term, high-dose glucocorticoid treatment. The low-dose corticotropin test is a sensitive and simple test to assess the adrenal response after such treatment.
OBJECTIVE: To assess the prevalence of renal artery stenosis (RAS) in subjects with type 2 diabetes and coexistent hypertension by using magnetic resonance angiography (MRA) of the renal arteries, to assess clinical and biochemical predictors of RAS, and to assess the hemodynamic significance of RAS, by using the captopril test (a measure of the response of plasma renin activity to a single oral dose of captopril). RESEARCH DESIGN AND METHODS: A total of 117 subjects with type 2 diabetes and coexistent hypertension between 40 and 70 years of age and with creatinine concentrations < 150 micromol/l were recruited from two inner-city general diabetes clinics. All subjects underwent MRA of the renal arteries. In a subgroup of 85 subjects, data concerning possible clinical and biochemical predictors of RAS were collected, and the captopril test was performed. For comparison of a continuous variable between subjects with a positive MRA and those with a negative MRA, the Mann-Whitney test was used. For comparison of a discrete variable between subjects with a positive MRA and those with a negative MRA, Fisher's exact test was used. RESULTS: The prevalence of RAS detected by using MRA in 117 hypertensive type 2 diabetic subjects was 17%; 19 subjects had unilateral RAS, and only 1 subject had bilateral RAS. A femoral bruit was significantly more common in subjects with a positive MRA versus subjects with a negative MRA (21 vs. 0%; Fisher's exact test P < 0.005); however, other clinical features of atherosclerotic disease were not statistically associated. Greater duration of hypertension and treatment with statins were features of subjects with RAS (P < 0.05). The captopril test was negative in all subjects, although the antihypertensive response to oral captopril was significantly greater in subjects with RAS detected by MRA. CONCLUSIONS: RAS is common in hypertensive type 2 diabetic subjects. The presence of a femoral bruit is a useful predictive clinical marker. The captopril test is not useful in predicting the hemodynamic significance of RAS in this patient group.
Hypertriglyceridaemia is thought to be the aetiology in 3% of patients with acute pancreatitis, often associated with poorly controlled diabetes mellitus or chronic alcohol abuse. However, in patients with non-biliary pancreatitis, chylomicronaemia is an underrated cause of acute pancreatitis. The activity of lipoprotein lipase (LPL) is crucial in removing triglycerides from the plasma; LPL gene mutations combined with secondary alterations in plasma lipoproteins, such as occur in pregnancy, diabetes mellitus, and alcohol abuse can cause severe hypertriglyceridaemia and pancreatitis. Heparin and insulin stimulate LPL activity. During a 12 months' period we consecutively screened all patients with the diagnosis of acute non-biliary pancreatitis for hypertriglyceridaemia, to evaluate the prevalence of hypertriglyceridaemia-induced pancreatitis and to assess the outcome under standardised treatment with intravenous heparin and insulin. Hypertriglyceridaemia-induced pancreatitis was diagnosed in 5 out of 46 patients (11%) with acute pancreatitis. In 2 patients hypertriglyceridaemia was associated with diabetes mellitus, in one patient with pregnancy and in another with chronic alcohol abuse. Four patients had to be referred to the intensive care unit. Plasma concentrations of triglycerides were (median +/- range) 43 mmol/l (14.7 to 80.4); pancreas amylase was 574 U/l (155 to 1606), and lipase was 1003 U/l (330 to 3010). All patients had oedematous pancreatitis demonstrated by CT scan. Treatment with i.v. heparin and i.v. insulin decreased trigylceride levels to less than 10 mmol/l within 2.8 days (1 to 6), the amylase and lipase levels returned to normal after 3 and 4 days respectively, and the abdominal pain was resolved. Hypertriglyceridaemia is a common and under-diagnosed etiology of acute non-biliary pancreatitis. Intravenous heparin and insulin is safe and effective in the treatment of hypertriglyceridaemia-induced pancreatitis. Low fat diet, supplements of (n-3) fatty acids ("fish oil") and fibrates are recommended for long-term maintenance therapy.
Iodine-induced thyrotoxicosis or "jodbasedow phenomenon" has been reported throughout the world since iodine has been administered to treat endemic goitre. Nowadays, iodinated radiocontrast agents and the antiarrhythmic drug amiodarone are the most common sources of excess iodine load subsequently leading to iodine-induced thyrotoxicosis, especially in elderly patients with underlying goitre. The aim of the study was to identify the number of cases of iodine-induced thyrotoxicosis among patients with thyrotoxicosis in a large urban hospital. Over an 18-month period thyrotoxicosis has been diagnosed in a total of 39 patients. Eight patients with iodine-induced thyrotoxicosis (5 female, 3 male; mean age 60.6 years) have been identified (20%). In all patients with iodine-induced thyrotoxicosis, iodine exposure with a mean iodine dose of 21.5 g was documented 2 to 16 weeks before diagnosis (iodinated radiocontrast agents in 5 patients, amiodarone in 2 patients, kelp tablets in 1 patient). Clinical features were predominantly tachyarrhythmias and heart failure, while 6 of 8 patients had goitre (thyroid volume 31 to 193 ml). Thyroid antibodies were not detected. Diagnosis was confirmed in 5 of 8 patients with increased urinary iodine concentrations (3436 to > 6000 nmol/24 h), and in 3 of 8 patients with a low tracer uptake in thyroid scintigraphy (1 to 4%). Treatment consisted of methimazole in all patients, additional tional beta-blockers and lithium in 4 patients, and prednisone in 5 patients. The mean treatment ment duration was 9.2 months, and patients became euthyroid after a mean treatment duration of 6.4 weeks. One patient (with still elevated free thyroxine levels) died of myocardial infarction 4 weeks after antithyroid drug therapy had been installed. The incidence, mechanisms and features of iodine-induced thyrotoxicosis are discussed. Iodine-induced thyrotoxicosis is a common disease, and the recognition and treatment of iodine-induced thyrotoxicosis, particularly in elderly patients and patients with goitre, are of clinical importance.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
The low incidence of coronary heart disease among Eskimos is related to their diet rich in marine fatty acids, which contain large amounts of polyunsaturated omega-3 fatty acids, mainly eicosapentaenoic and docosahexaenoic acids. The beneficial effects on atherosclerotic vascular disease result from favorable influence on prostaglandin/thromboxane metabolism. Clinical studies have also reported antiinflammatory effects.
Capnocytophaga is a gram-negative capnophilic bacterium which is part of the normal oral flora of humans (C. ochracea, C. gingivalis, C. sputigena) and mammals such as canines, cats, and rodents (C. animorsus and C. cynodegmi). Its role in the pathogenesis of periodontal disease is not well defined, and normally it represents an opportunistic germ of low pathogenicity. Threatening and fulminant infections have been observed in immunodeficient patients, and lately in immunocompetent hosts. We describe an otherwise healthy woman who developed a cervical abscess due to C. ochracea. Recurrent aphthous lesions are suspected to be the port of entrance for the germs. Bacteriological, clinical, epidemiological, and therapeutic aspects of Capnocytophaga infection are discussed.