Navegando por Palavras-chave "nomogram"

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    Nomogram of fetal middle cerebral artery peak systolic velocity at 23-35 weeks of gestation in a Brazilian population: Pilot study
    (Taylor & Francis Ltd, 2008-01-01) Machado Nardozza, Luciano Marcondes [UNIFESP]; Simioni, Christiane [UNIFESP]; Garbato, Gabriel [UNIFESP]; Araujo Junior, Edward [UNIFESP]; Guimaraes Filho, Helio Antonio [UNIFESP]; Torloni, Maria Regina [UNIFESP]; Camano, Luiz [UNIFESP]; Moron, Antonio Fernandes [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)
    Objective. To establish normative data for the peak systolic velocity of the middle cerebral artery (MCA-PSV) of fetuses in the second half of pregnancy using multiples of the median and percentile reference range. Methods. A cross-sectional study was performed in 90 healthy fetuses at between 23 and 35 weeks of gestation. A bi-dimensional axial scan of the brain, including the thalami and cavitas septi pellucidi was obtained. the circle of Willis was visualized using color flow mapping. Pulsed-wave Doppler velocimetry of the MCA was performed close to the artery's origin, with a beam-vessel angle below 20. A table with the multiples of the median (MoM) of the MCA-PSV for each gestational age was generated and Pearson's correlation coefficient (r) was calculated. Regression modeling across gestational age was performed to obtain the reference values. Results. There was a strong correlation between the MCA-PVS and gestational age (r=0.70; p0.001). Values for the MCA-PSV for the following MoM were calculated: 1.0, 1.29, 1.50, and 1.55. the MCA-PSV 2.5th and 97.5th centiles ranged from 24.33cm2/s to 78.36cm2/s, respectively, between weeks 23 and 35. Conclusions. A nomogram for the fetal MCA-PSV during the second half of pregnancy was generated.
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    Reference Range of Embryo Volume by 3-D Sonography Using the XI VOCAL Method at 7 to 10+6 Weeks of Pregnancy
    (Thieme Medical Publ Inc, 2010-06-01) Araujo Junior, Edward [UNIFESP]; Machado Nardozza, Luciano Marcondes [UNIFESP]; Rolo, Liliam Cristine [UNIFESP]; Nowak, Paulo Martin [UNIFESP]; Bortoletti Filho, Joao [UNIFESP]; Moron, Antonio Fernandes [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)
    We sought to establish normative data for three-dimensional ultrasound (3DUS) first-trimester embryonic volume using the extended imaging virtual organ computer-aided analysis (XI VOCAL) technique. This cross-sectional study involved 64 normal pregnancies at 7 to 10 + 6 weeks' gestation. Embryonic volume was obtained on 3DUS using the XI VOCAL technique with manual outline of 10 sequential planes. the mean, median, standard deviation, and maximum and minimum values were obtained for each week calculated. Polynomial regression models adjusted by the determination coefficient (R(2)) were created to assess the correlation between embryonic volume and gestational age (GA) and crown rump length (CRL). the intraclass correlation coefficient (ICC) was used to calculate inter-and intraobserver reproducibility. Mean embryonic volume went from 0.20 cm(3) (range 0.10 to 0.89 cm(3)) to 5.12 cm(3) (range 2.90 to 5.98 cm(3)). Embryonic volume was strongly correlated with GA (R(2) = 0.84) and with CRL (R(2) = 0.87). There was a good inter-and intraobserver reproducibility of embryonic volume with ICC = 0.999 and 0.995, respectively. Reference range for 3DUS first-trimester embryonic volume using the XI VOCAL technique were generated for pregnancies at 7 to 10 + 6 weeks, with high inter-and intraobserver reproducibility.
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    Reference range of fetal lung volume by 3D-ultrasonography using the rotational method (VOCAL)
    (Walter de Gruyter & Co, 2009-03-01) Werneck Britto, Ingrid Schwach; Silva Bussamra, Luiz Claudio de; Junior, Edward Araujo [UNIFESP]; Tedesco, Giselle Daharem; Machado Nardozza, Luciano Marcondes [UNIFESP]; Moron, Antonio Fernandes [UNIFESP]; Aoki, Tsutomu; Med Sci Coll Santa Casa São Paulo FCMSCSP; Universidade Federal de São Paulo (UNIFESP)
    Aim: To determine reference ranges for fetal lung volume by 3-dimensional ultrasonography using the VOCAL (Virtual Organ Computed-aided Analysis) method.Methods: A longitudinal prospective study was conducted with 61 uncomplicated pregnancies between 24 and 32 weeks of gestation. A separate measurement of both lungs volume was conducted by VOCAL with 308 rotation angle. for each gestational age, an average, standard deviation and maximal and minimal values were established in addition to the percentiles 5, 10, 25, 50, 75 and 90 for right and left lung volume. To evaluate the correlation between lung volume and gestational age, and estimated fetal weight, a polynomial regression with determination coefficient adjustment (R(2)) was used. the intra-observer reproducibility was evaluated by the intra-class correlation coefficient (ICC), whereas the inter-observer reproducibility was evaluated by Cronbach alpha statistic test.Results: the average right lung volume varied from 12.5 +/- 0.7 cm(3) at the 24(th) week to 31.8 cm(3)+/- 1.8 cm(3) at the 32(nd) week. the average left lung volume varied from 9.2 +/- 0.9 cm(3) at the 24(th) week to 22.0 cm(3)+/- 1.6 cm(3) at the 32(nd) week. We observed a strong correlation between right lung volume and gestational age (R(2)=0.975) and estimated fetal weight (R(2)=0.905), as well as between the left lung volume with gestational age (R(2)=0.970) and estimated fetal weight (R(2)=0.908). We observed a good intra-observer reproducibility for the right lung volume (ICC=0.990) and for the left lung volume (ICC=0.986). Similarly, we observed good inter-observer reproducibility for right lung volume (0.975) and left lung volume (0.962).Conclusion: Reference range of fetal lung volume by 3D-ultrasonography using the VOCAL method was determined.