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Biomedical subjects

J Plank

Publications and source records attributed to J Plank.

At least 37 records · Page 2Linked to original sources
PubMed1985

[Biometric data of normotrophic neonates].

Gestation age of a neonate could be estimated approximately by a pathologist according to some macroscopical features. In addition to the weight of large organs the authors studied weight of other organs and some biometrical data in a group of 84 normotrophic neonates. Regressive analysis gave information about the growth trend of organs; compared with tables it enabled to find out the growth retardation of a neonate or his single organ. The span of fingers represented a precise statistical figure for the estimation of gestation age in addition to the weight of organs.

Anthropometry↗
PubMed1985

[Diagnosis and classification of pulmonary findings in neonates].

Developmental phases could be defined in neonatal lung tissue fixed in situ or in an ordinary way: glandular lung, canalicular lung with simple tubes covered by cuboid epithelial cells, alveolar lung with usual complicated structure. Canalicular lung could manage the blood saturation which depends on the number of capillaries. There was a different picture of alveoli filled with fluid or air. Hyaline membranes, always occurring in fluid-filled alveoli, represented a barrier for drainage of intraalveolar fluid. Step-wise inflation of lung enabled a histomechanical examination giving lately "functional" figures. They showed a poor functional readiness as well as a quick postnatal adaptability of immature lung. Pressure-volume curves correlated with histological maturity and pathological finding offered a more comprehensive explanation of clinicopathological mechanisms.

Fetal Organ Maturity↗
PubMed1985

[Evaluation of kidney maturity in neonates].

Morphometric analysis of glomeruli allows to estimate renal maturity or find out an accidental retardation of growth. A simpler estimation of the number of yalers formed by immature glomeruli is less time-consuming. Final diagnosis of pathologist should include this estimation. An intense growth of glomeruli does not start before glomerular lobulation concurring with an increase of capillary lumina in a glomerular square unit. So lobulation expresses generally the maturity of glomeruli.

Fetal Organ Maturity↗
PubMed1985

[Criteria for neonatal maturity. Conclusions for practice].

The evaluation of neonatal maturity is an important condition for interpretation of pathologist's findings. Weight of organs and other biometrical data, histological evaluation of maturity in various organs and rebuilding of circulation give objective morphological criteria of maturity as well as isolated retardation of growth or development.

Fetal Organ Maturity↗
PubMed1984

[Brain weight in relation to the maturity of the newborn infant].

Average cerebral weights were calculated in correlation to the age of gestation and birth weight in 84 hypotrophic and 219 normotrophic neonates. Correlation of cerebral weight and gestation age was significantly different in the both groups, correlation of cerebral weight and birth weight was parallel. Cerebral growth trend can be estimated in routine autopsies according these results.

Birth Weight↗
PubMed1982

Developmental trends of liver parenchyma in the terminal period of gestation: a stereological approach.

The aim of the presented study was to establish the baseline data concerning the volumes density of basic architectonic components of human fetal liver parenchyma. The stereological measuring principles of the point-counting method were used. The livers of 38 appropriate for gestational age fetuses, and 12 small for gestational age fetuses were measured. All fetuses investigated were stillborns. A lower volume density of hepatocytic population was found in full-term mature fetuses, when compared with the adults. A lower volume density of hepatocytes has been also disclosed in intra-uterine growth retarded fetuses, when compared with their physiologically developed counterparts of the same gestational age.

Adult↗