[Prevalence of abdominal obesity and excess fat in students of a city in the mountains of southern Brazil].

Obesity is considered the most important nutritional disorder due to a rapid increase in its prevalence in recent years. The scope of this study was to estimate the prevalence of abdominal obesity and excess fat in students aged 11 to 14 (boys and girls) from a town in the mountains of southern Brazil, and to verify the possible associations with economic classification, gender, age, eating habits, lifestyle habits (physical activity and sedentary activities) and dissatisfaction with body image. A cross-sectional study was conducted with 1230 students.

Association of aortic coarctation and malignant right coronary artery anomaly: an unusual cause of angina pectoris.

A 53-year-old man with exercise-induced ischemia was referred for investigation. Coronary angiography revealed a right coronary artery originating from the trunk of the left coronary artery, and an aortic coarctation was observed on aortography. A CT angiogram confirmed these findings.

Phacoemulsification versus extracapsular extraction: governmental costs.

Purpose: To evaluate the governmental costs of patients undergoing phacoemulsification and extracapsular cataract extraction at a public hospital in a developing country.

Methods: A prospective study was conduced with 205 patients. The subjects were randomized for cataract surgery using either phacoemulsification or extracapsular cataract extraction techniques.

An enzyme-labeled immunometric assay for quantitation of digoxin in serum or plasma.

A heterogeneous enzyme-labeled immunometric assay for quantifying digoxin in serum or plasma was developed. The sample's drug reacts with an excess of an antidigoxin Fab'-beta-galactosidase monoconjugate and then the free monoconjugate is removed by polyacrylamide digitoxigenin-coupled beads; the beta-galactosidase activity of the supernatant measured photometrically at 634 nm is directly proportional to the digoxin concentration in the sample. The assay shares the basic reagents for the immunological reaction with the Seralyzer dry-strip immunometric assay; the reagents for the indicator enzyme reaction were instead formulated in liquid form for use with common clinical analyzers.

Enzymatic assay of magnesium through glucokinase activation.

We describe an improved enzymatic method for assaying magnesium in serum, plasma, or urine. Magnesium participates as an Mg.ATP complex in a reaction catalyzed by glucokinase (EC 2.