Fetal size charts for the Italian population. Normative curves of head, abdomen and long bones

Paladini, D.; Rustico, Mariangela; Viora, E.; Giani, Umberto; Bruzzese, Dario; Campogrande, M; Martinelli, Pasquale

doi:10.1002/pd.1158

Cited by 61 publications

(44 citation statements)

References 21 publications

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“…The FP model considers different transformations of the variable time called 't' (powers of t: 22, 21, 20.5, 0.5, 1, 2 and 0Ln) to choose the parameters of the mathematical function (Royston and Altman, 1994;Royston and Sauerbrei, 2008). Indeed, this technique has been previously used to fit growth curves, survival curves or epidemiologic analysis (Royston and Altman, 1994;Lambert et al, 2005;Paladini et al, 2005;Cui et al, 2009). The subset of four transformed variables was chosen on the basis of R 2 coefficients obtained from the regression.…”

Section: Flock and Managementmentioning

confidence: 99%

Accurate mathematical models to describe the lactation curve of Lacaune dairy sheep under intensive management

Elvira¹,

Hernández²,

Cuesta

et al. 2013

Animal

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Although the intensive production system of Lacaune dairy sheep is the only profitable method for producers outside of the French Roquefort area, little is known about this type of systems. This study evaluated yield records of 3677 Lacaune sheep under intensive management between 2005 and 2010 in order to describe the lactation curve of this breed and to investigate the suitability of different mathematical functions for modeling this curve. A total of 7873 complete lactations during a 40-week lactation period corresponding to 201 281 pieces of weekly yield data were used. First, five mathematical functions were evaluated on the basis of the residual mean square, determination coefficient, Durbin Watson and Runs Test values. The two better models were found to be Pollott Additive and fractional polynomial (FP). In the second part of the study, the milk yield, peak of milk yield, day of peak and persistency of the lactations were calculated with Pollot Additive and FP models and compared with the real data. The results indicate that both models gave an extremely accurate fit to Lacaune lactation curves in order to predict milk yields (P 5 0.871), with the FP model being the best choice to provide a good fit to an extensive amount of real data and applicable on farm without specific statistical software. On the other hand, the interpretation of the parameters of the Pollott Additive function helps to understand the biology of the udder of the Lacaune sheep. The characteristics of the Lacaune lactation curve and milk yield are affected by lactation number and length. The lactation curves obtained in the present study allow the early identification of ewes with low milk yield potential, which will help to optimize farm profitability.

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Section: Flock and Managementmentioning

confidence: 99%

Accurate mathematical models to describe the lactation curve of Lacaune dairy sheep under intensive management

Elvira¹,

Hernández²,

Cuesta

et al. 2013

Animal

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“…1,[6][7][8][9][10][11][12] Per for med in lar ge num bers, the se analy ses cons ti tu te re fe ren ce charts for dif fe rent ge ne tic gro ups. [13][14][15][16][17] So me re se arc hers ha ve sug ges ted that in ad diti on to the abo ve analy ses, pa ra me ters such as trans ver se ce re bel lar di a me ter, na sal bo ne length, kid ney length, sac ral length and sca pu la length also pro vi de use ful re sults. 8,12,[18][19][20][21][22] Gott li eb and Ga lan sug gest that in spe ci fic cli ni cal si tu a ti ons such as fetal he ad and ab do men oli gohy dram ni os, the he ad may be ex po sed to com pres si on, and BPD and AC me a su re ment may be dif fi cult.…”

Section: Gestational Age and Its Relationship With Elbow Width Wristmentioning

confidence: 99%

Gestational Age and its Relationship with Elbow Width, Wrist Width and Forearm Length

Uluutku¹,

Akbaytürk²,

Çan³

et al. 2010

Turkiye Klinikleri J Med Sci

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A AB BS S T TR RA AC CT T O Ob b j je ec c t ti i v ve e: : Fe tal de ve lop ment has been a sub ject of gre at in te rest from ear li est ti mes to the pre sent day and can to day ea sily be analy zed using ul tra so und (US) and si mi lar de vi ces. The lengths or di a me ters of va ri o us fe tal struc tu res are me a su red, and in tra u te ri ne age and de ve lopment can thus be mo ni to red. Our study in ves ti ga tes the va lu e of a se ri es of lengths me a su red in the up per ex tre mity in the mo ni to ring of in tra u te ri ne age and de ve lop ment. M Ma a t te e r ri i a al l a an nd d M Me et t h ho od ds s: : We me a su red the fo re arm length, hand length, wrist width and el bow widths of 21 fe tu ses (seven ma les, 14 fe ma les) es ti ma ted at 17.0-35.8 we eks in tra u te ri ne age ac cor ding to fo ot length and with no vi sib le ab nor ma li ti es. The se we re com pa red to each other and analyzed with respect to gen der. Me a su re ments we re ta ken using di vi ders and a ver ni er di gi tal ca li per. R Re e s su ul lt ts s: : No differences were de ter mi ned between the groups statistically for the parameters measured and when they were compared for gender. El bow and wrist widths and hand, fo re arm and fo ot lengths ob ta i ned from fe tuses and the ra ti os of some of the se me a su re ments de mons tra ted con si de rab le cor re la ti on (si mi la rity) with me a su re ments and pro por ti ons on the op po si te si de of the body and with in tra u te ri ne age. C Co on nc c l lu u s si i o on n: : Me a su rab le wrist and el bow widths and fo re arm, hand and fo ot length in who le or frag men ted fe tu ses we re de ter mi ned to be in di vi du ally va lu ab le in di ag no sing ges ta ti o nal age. It was al so conc lu ded that el bow and wrist width to fo re arm length ra ti os on the sa me si de we re important in mo ni to ring in tra u te ri ne ex tre mity de ve lop ment.K Ke ey y W Wo or rd ds s: : Ges ta ti o nal age; fe tal de ve lop ment; fo re arm; hand; wrist; el bow Ö ÖZ ZE ET T A Am ma aç ç: : İlk za man lar dan gü nü mü ze me rak uyan dı ran fe tal ge li şim bu gün ul tra so nog ra fi (US) ve ben ze ri ci haz la rın sağ la mış ol du ğu ola nak lar la ra hat lık la de ğer len di ri le bil mek te dir. Bu nun için bir ta kım fe tal ya pı la rın uzun luk la rı ya da çev re le ri öl çül mek te dir. Böy le ce in tra u te rin yaş ve ge lişim ta kip edi le bil mek te dir. Ça lış ma mız da üst ex tre mi te de öl çü len bir ta kım uzun luk la rın in tra ute rin yaş ve ge li şi min ta ki bin de ki de ğe ri sor gu lan dı. G Ge e r re eç ç v ve e Y Yö ön n t te em m l le er r: : İntra u te rin yaş la rı ayak uzun luk la rı na gö re 17.9-35.8 haf ta lar ile iliş ki len di ri len 21 adet (yedi er kek, 14 ka dın) gö rü nür anoma li si ola ma yan fe tu sun; ön kol uzun lu ğu, el uzun lu ğu, el bi le ği ge niş li ği ve dir sek ge niş li ği öl çül -dü. Top lam da ve cin si yet ay rı mı ya pı la rak bir bir le ri ile kar şı laş tı rıl dı lar. Öl çüm ler açı öl çer ve ver ni er di ji tal ...

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“…The aim of this study was to compare the accuracy of the IG-21 standard for abdominal circumference (AC), which is well established as the single most useful measurement for the prediction of SGA fetuses [1,2] , with the one produced by the Italian Society of Ultrasound in Obstetrics and Gynecology (SIEOG) [4] in a group of pregnant patients at increased risk for intrauterine growth restriction who were evaluated in two Italian university hospitals.…”

mentioning

confidence: 99%

Clinical Validation of the INTERGROWTH-21st Standards of Fetal Abdominal Circumference for the Prediction of Small-for-Gestational-Age Neonates in Italy

Bellussi

Cataneo²,

Visentin³

et al. 2017

Fetal Diagn Ther

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Objectives: To compare the accuracy of the INTERGROWTH-21st (IG-21) with the Italian Society of Ultrasound in Obstetrics and Gynecology (SIEOG) abdominal circumference (AC) standards in the detection of small-for-gestational-age (SGA) fetuses in a high-risk population. Material and Methods: Our study included all pregnant patients with an increased risk of placental insufficiency that were seen in two Italian university hospitals between 2014 and 2015. The accuracy of IG-21 and SIEOG AC standards in the detection of SGA neonates was analyzed by means of the area under the receiver operating characteristic curve (ROC-AUC) at 4 gestational age intervals (24-27, 28-31, 32-35, >35 weeks). Results: We enrolled 428 patients (278 Italians). There was no significant difference between the ROC-AUC of AC according to IG-21 and SIEOG standards for all birthweight thresholds and gestational intervals that were considered. The diagnostic performance was similar in Italian and non-Italian patients. The accuracy was, however, limited, with values of ROC-AUC ranging between 0.80 and 0.89. Conclusions: The IG-21 and SIEOG AC standards are interchangeable for the diagnosis of SGA fetuses. The diagnostic accuracy is, however, limited. We provide figures that can be used to stratify the probability that an infant will be SGA in an obstetric population at increased risk of growth restriction.

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Fetal size charts for the Italian population. Normative curves of head, abdomen and long bones

Cited by 61 publications

References 21 publications

Accurate mathematical models to describe the lactation curve of Lacaune dairy sheep under intensive management

Accurate mathematical models to describe the lactation curve of Lacaune dairy sheep under intensive management

Gestational Age and its Relationship with Elbow Width, Wrist Width and Forearm Length

Clinical Validation of the INTERGROWTH-21st Standards of Fetal Abdominal Circumference for the Prediction of Small-for-Gestational-Age Neonates in Italy

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