55 research outputs found
Carpals and epiphysis of radius and ulna as age indicators
Estimation of skeletal age using radiographic
images is widely used for assessing biological growth in
clinical and auxological studies. The most frequent areas
used for age estimation in children and adolescents are
tooth and wrist/hand, both giving good results with only a
low level of radiation. In particular, ossification of the
carpals shows good agreement with chronological age. This
study of a sample of 150 Italian children and adolescents
aged between 5 and 17 years focused on analyzing the
possible applications of the proportion of carpal area (Ca)
mineralization as a criterion of age estimation. The ratio
between the total area of carpal bones and epiphyses of the
ulna and radius (Bo) andCa was calculated. This ratio (Bo/Ca)
was used for linear regression analysis. The regression model,
describing age as a linear function of the ratio Bo/Ca, yielded
the following equation: Age= 123.253+0.719g+20.610 Bo/Ca,
and explained 83% of the total variance (R2=0.83). The
median of the absolute values of residuals (observed age
minus predicted age) was 0.08 years, with a quartile deviation
of 1.59 years, and a standard error of estimate of 1.19 years
Age estimation using carpals: study of a Slovenian sample to test Cameriere\u2019s method
Carpals are often used as age indicators. In a recent study, Cameriere et al. studied the use of the ratio between the total area of carpal bones and epiphyses of the ulna and radius (Bo) and carpals (Ca) as age indicators. The present study, of a sample of 158 Slovenian children and adolescents aged between 6 and 16 years, focused on analysing the best regression for age estimation. The regression model yielded the following equation:age = 3.411 + 0.942g + 20.927(Bo/Ca), and explained 91.6% of total variance (R2 = 0.916). The median of the absolute values of residuals (observed age minus predicted age) was 0.09 years, with a quartile deviation of 0.786 years, and a standard error of estimate of 0.658 years.
Comparisons between the previous equation referring to Slovenian children and the equivalent linear equation proposed by Cameriere et al. did not reveal any significant differences between the intercepts and slopes of the two linear models. These results suggested a common regression model for both Italian and Slovenian samples.
The common regression model, describing age as a linear function of gender and Bo/Ca ratio, yielded the following linear regression formula: age = 2.907 + 0.408g + 20.757(Bo/Ca). This model explained 86% of total variance (R2 = 0.86). The median of the absolute values of residuals (observed age minus predicted age) was 0.02 years, with a quartile deviation of 1.02 years and a standard error of estimate of 0.96 years
MALPRACTICE E REAZIONI AVVERSE AI FARMACI:dalla clinica alle aule di giustizia
Atti delle prime giornate di studio del GISDI Napoli 12-14 marzo 200
Alcol e sicurezza sul lavoro. Alcune considerazioni medico-legali e tossicologiche sui contenuti dell'articolo 15 della legge 30 marzo 2001 n. 125
none4noneCINGOLANI M.; MIRTELLA D; FROLDI R.; RODRIGUEZ D.Cingolani, M.; Mirtella, D; Froldi, R.; Rodriguez, Daniel
Retroperitoneal hemorrhage caused by trephine biopsy
The bone marrow biopsy is usually a safe procedure; however, it can occasionally present important complications. These complications are not always immediately evident or quickly diagnosed and may include pain at the biopsy site, trauma to neighboring structures, vascular injuries, infection, transient pressure neuropathies, pneumoretroperitoneum, and hemorrhage. Several risk factors are recognized, including thrombocytopenia, concurrent use of anticoagulants, and the presence of an underlying myeloproliferative disorder. While several reports of adverse events have been published, only 2 deaths attributable to this procedure have been reported. We present 2 cases of fatal hemorrhage after bone marrow biopsy
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