Noninvasive radial artery tonometry augmentation index and urinary albumin/creatinine levels in early adolescents with type 1 diabetes mellitus.

Patients with type 1 diabetes mellitus (DM1) are at an even greater risk compared to the general population for the development of cardiovascular disease. Studies have determined that the pathological changes seen in atherosclerosis develop at a very early age. There is a growing consensus within the medical community that early identification of chronic disease may help to reduce morbidity and mortality. The aim of this study was to assess the degree of arterial stiffness by measuring the augmentation index (AIx), using noninvasive radial artery tonometry, in adolescent children with DM1 compared with age-matched controls. In addition, urinary albumin/creatinine ratios were obtained to assess a possible relationship between renal and cardiac dysfunction in patients with DM1. Forty-five adolescents with DM1 and 42 controls between the ages of 12 and 14 years were recruited. Radial artery stiffness and urinary albumin/creatinine ratios of the adolescents with DM1 were not different from controls.

When should cranial magnetic resonance imaging be used in girls with early sexual development?

OBJECTIVE: To determine whether concise parameters can be established in girls who present with signs of early puberty before the age of 8 years, which would help to identify those in whom cranial magnetic resonance imaging (MRI) is indicated. METHODS: A retrospective chart review was undertaken over a 10-year period from 1992-2002. The two requirements for inclusion in this study were girls who manifested pubertal changes before the age of 8.0 years and who underwent MRI of the brain. The records of 130 female patients with the presumptive diagnosis of precocious puberty (PP) were evaluated. Patients' medical records were reviewed for histories of any reported focal neurological complaint suspicious for intracranial lesions, such as headaches, seizures, or visual disturbances, as well as menses and advanced bone age (>2 SD) compared to chronological age. Seventy-five patients met these criteria and were divided into two groups. Group I consisted of nine patients with abnormal cranial MRI; Group II consisted of 66 patients with normal MRI. RESULTS: The patients in each group who had one or more of the central nervous system (CNS) signs and symptoms of early sexual development that were evaluated were markedly different. In Group I, 89% (CI 52-99.7%) had positive signs and symptoms that were suspicious for an intracranial lesion. In Group II, 94% (CI 85-98%), 63 of 66 girls, had no CNS signs or symptoms. CONCLUSION: The use of cranial MRI in the evaluation of girls with early sexual development is excessive. Girls with signs of pubertal development before age 8 years should be evaluated and followed. Those with specific CNS signs and symptoms, menses, and girls with a rapid advance in sexual development should undergo cranial MRI. Using this approach, far fewer patients in our study would have had cranial MRI.