Dieter Weitzel

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AIMS To analyse current therapeutic strategies for prandial insulin substitution in a large number of children and adolescents with Type 1 diabetes in Germany and Austria, along with changes in therapeutic habits and outcome. METHODS We classified the data of 26 687 patients, treated from 1995 to 2005 in 152 paediatric clinics, using a database(More)
In 194 healthy children of all ages, sonographic measurements of the liver and spleen were performed on standardized section planes and normal values established. These measurement values showed an approximately linear increase in the course of development and correlated best with the body length. For a rapid orientational evaluation of the liver size,(More)
Renal volume is an important parameter of renal development. Deviations from normal volume may indicate pathologic conditions. Thus, during childhood, the ever changing renal volumes require the continuous referral to normal volume charts in order to classify actual volumes, which is rather inconvenient. In daily practice this is frequently disregarded and(More)
AIMS/HYPOTHESIS This study investigated the accuracy of blood glucose meters for self-monitoring and its influence on glycated hemoglobin (HbA1c) levels and the frequency of hypoglycemic coma. MATERIALS AND METHODS Self-measured and simultaneously obtained laboratory blood glucose values from 9,163 patients with type 1 diabetes <18 years of age in the(More)
Premature infants undergo intensive growth during the postnatal period. Adequate mineralization is dependent on sufficient intake of calcium (Ca) and phosphorus (P). However, Ca and P supplementation can be associated with some risks, for example development of nephrocalcinosis. We investigated pathophysiological risk factors in premature very low birth(More)
The tubeless pancreas-function test with fluorescein dilaurate, which is based on the saponification of the test substance by pancreas-specific arylesterases, and which has proved itself in adults, was given to children for the first time. After reduction of the size of the test dose and the amount of liquid to be drunk, there were no difficulties in(More)
Renal sonograms of 260 children were compared with the corresponding excretory urograms. Since each kidney was evaluated separately 520 sonographic and urographic findings could be compared. The study is based on single investigations only, serial investigations were not included. 326 kidneys could be classified as being normal, primarily on the basis of(More)
The kidneys of 211 infants (106 males, 105 females) were measured sonographically. Renal length, width and depth and the calculated kidney volume were correlated to body weight, body length and body surface. It was possible to establish a nomogram, which presented a good correlation between body weight and kidney volume and which can easily be used for(More)
AIM To assess the prevalence of gallstones in normal neonates. METHOD We used sonography to assess the gallbladder in 3500 unselected infants between 1993 and 1995. Examination was performed during the first four days of life as part of a prospective neonatal screening study evaluating hip and renal abnormalities. RESULTS We found sludge or gallstones(More)
The determination of organ size is another important criterium in ultrasound examination. There are only few investigations in the neonatal group. Therefore in a prospective study the abdominal organs of 85 neonates were examined with a 7.5 MHz small part scanner. These organs were measured in standardized sections in order to establish normal values]