Assessment of Foetal Age on the Basis of the Selected Dimensions of the Thorax
| Autor: | Jowita Woźniak, Alicja Kędzia, Krzysztof Dudek |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Thorax
medicine.medical_specialty business.industry Gompertz function Medicine (miscellaneous) Regression analysis Mathematical formula Growth curve (biology) Exponential models Circumference General Biochemistry Genetics and Molecular Biology Surgery Total Body Length Reviews and References (medical) Internal Medicine medicine Pharmacology (medical) Nuclear medicine business Genetics (clinical) Mathematics |
| Zdroj: | Advances in Clinical and Experimental Medicine. 23:805-811 |
| ISSN: | 1899-5276 |
| Popis: | Background. The correct definition of foetal age is a substantial problem in forensic medicine, gynaecology, obstetrics and anthropology. Objectives. The goal of the study was the mathematical assessment of the foetal age with the use of thorax selected dimensions. Material and Methods. The material consisted of 110 foetuses aged 4–7 months of foetal life, including 50 females in the CRL range: 80–233 mm. The following methods were incorporated: preparation, anthropological, image digital acquisition, Image J computer system measurements and statistical analysis. For each foetus the following sizes were taken: crump-rump length – CRL (v-tub), total body length – v-pl as well as brachial circumference – BC, thoracic circumference – TC and clavicular length – CLA. Results. Six monofunctional mathematical models were elaborated: Bertalanffy growth curve, three Gompertz function based models and two exponential models to assess examined parameters increase along with t age. Model no. 3 for Gompertz function revealed the biggest consistency with v-pl measurements for every determination ratio R 2 = 0.9944 for exponential model R 2 = 0.9917. Multiple regression analysis was used to elaborate mathematical formula to assess the foetal age (determination factor R 2 = 0.9997) with BC, TC parameters. Conclusions. Examined parameters BC and TC were found useful in foetal age assessment in the evaluated age range. Elaborated mathematical model can be applied in clinical practice e.g. in foetal age ultrasound determination (Adv Clin Exp Med 2014, 23, 5, 805–811). |
| Databáze: | OpenAIRE |
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