Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 7 de 7
Filter
1.
Int. braz. j. urol ; 42(3): 558-563, graf
Article in English | LILACS | ID: lil-785741

ABSTRACT

ABSTRACT Objectives To confirm if a real inner descend of testis occurs, correlating the testicular position with fetal parameters and analyzing the position of the testes relative to the internal ring. Material and Methods Twenty nine human fetuses between 13 and 23 weeks post conception (WPC) were studied. The fetuses were carefully dissected with the aid of a stereoscopic lens with 16/25X magnification and testicular position observed. With the aid of a digital pachymeter the distance between the lower pole of the kidney and the upper extremity of the testis (DK-T) was measured to show the position of the testis. During the dissection we also indicated the position of the testes relative to the internal ring. Means were statistically compared using simple linear regression and the paired T-test. Results The 58 testes had abdominal position. The DK-T in the right side measured between 0.17 and 1.82cm (mean=0.79cm) and in the left side it was between 0.12 and 1.84cm (mean=0.87cm), without statistically differences (p=0.0557). The linear regression analysis indicated that DK-T in both sides correlated significantly and positively with fetal age. All fetuses with more than 20 WPC, heavier than 350g and with CRL over 22cm had a greater distance than the average DK-T. We xobserved that the 58 testis remains adjacent to the internal ring throughout the period studied. Conclusions The testes remains adjacent to the internal ring throughout the period studied, indicating that there is no real trans-abdominal testicular descent during the second gestational trimester.


Subject(s)
Humans , Male , Female , Pregnancy , Pregnancy Trimester, Second , Testis/anatomy & histology , Testis/embryology , Fetus/anatomy & histology , Fetus/embryology , Linear Models , Gestational Age , Crown-Rump Length , Fetal Weight , Cryptorchidism/embryology , Abdomen/anatomy & histology , Abdomen/embryology , Kidney/anatomy & histology , Kidney/embryology
2.
Rev. chil. obstet. ginecol ; 65(6): 430-7, 2000. ilus, tab
Article in Spanish | LILACS | ID: lil-295233

ABSTRACT

Las cardiopatías congénitas (Cc), constituyen un grupo heterogéneo de anomalías estructurales, producto de la gran variedad de defectos anatómicos descritos y los cambios fisiopatológicos que determinan. Aquellas Cc. caracterizadas por una obstrucción severa de los tractos de salida representan el grupo principal de lesiones ductus dependientes, que pueden requerir tratamiento intensivo e incluso cirugía cardíaca de urgencia en el período neonatal. La detección antenatal de dependencia ductal es posible, demostrando un flujo reverso a través del ductus arterioso en un plano de sección oblícuo del tórax fetal. Sin embargo, esta visión ecocardiográfica requiere una compresión de la orientación espacial de los tractos de salida y no es fácil de obtener para cualquier operador, requiriendo tiempo y preparación. Con el fin de mejorar la detección de dependencia ductal en este tipo de Cc., sugerimos una modificación a la visión de 3 vasos. Realizando un plano de sección transverso sobre el mediastino fetal superior, ligeramente sobre la visión de 3 vasos, se visualizará una sección oblicua de la arteria pulmonar y el arco aórtico, además de una sección transversa de la vena cava superior. La adición de color demostrará un llene unidireccional en los vasos arteriales. En 5 Cc. ductus dependientes, demostramos la existencia de un shunt inverso entre ambos vasos arteriales. La dependencia ductal de algunas Cc puede ser fácilmente identificada utilizando doppler color en un plano de sección reproducible por muchos operadores


Subject(s)
Humans , Female , Pregnancy , Heart Defects, Congenital , Ductus Arteriosus/embryology , Abdomen/embryology , Heart Defects, Congenital/surgery , Heart Defects, Congenital/etiology , Ductus Arteriosus , Pregnancy Complications, Cardiovascular , Ultrasonography, Prenatal , Vena Cava, Superior
3.
Yonsei Medical Journal ; : 222-228, 1998.
Article in English | WPRIM | ID: wpr-66560

ABSTRACT

Nonvisualized, dilated or even a small fetal stomach can be associated with a variety of anomalies and poor fetal outcome. Therefore, we attempted to evaluate the stomach circumference (SC)/abdominal circumference (AC) ratio to assess normal limits of fetal stomach size. A total of 363 fetuses ranging from 15 to 39 weeks' gestation were prospectively evaluated with ultrasonography. The SC was measured from a plane that is perpendicular to the fetal longitudinal axis at the level where the largest axial circumference of the stomach was obtained using a digitizer. The AC was also measured at the same section and the ratio was calculated by dividing the SC by the AC and multiplying by 100. The SC increased linearly from 15 to 24 weeks and showed fluctuations in size thereafter to 39 weeks. A strong correlation was noted between gestational age and both SC (r: 0.842, P 0.05). Although the fetal stomach is a dynamically changing organ, the SC/AC ratio can be considered as a potentially useful parameter in assessing fetal stomach size.


Subject(s)
Humans , Abdomen/embryology , Cross-Sectional Studies , Fetal Development/physiology , Fetus/anatomy & histology , Gestational Age , Prospective Studies , Stomach/embryology , Ultrasonography, Prenatal
4.
Rev. bras. ginecol. obstet ; 18(1): 37-43, jan.-fev. 1996. ilus, tab
Article in Portuguese | LILACS | ID: lil-168443

ABSTRACT

O autor estudou o valor de uma forma simplificada de classificaçao da distribuiçao das calcificaçoes placentárias na estimativa da maturidade fetal, em 396 gestantes submetidas a ecografia na maternidade do Hospital de Clínicas da UFPr. A classificaçao baseia-se, apenas, nos achados do bolo placentário e, por esta razao, é mais simples que a classificaçao de Grannum e col, a mais usada até hoje. As placentas foram divididas em graus O, 1, 2a, 2b e 3, conforme a presença de calcificaçoes no bolo placentário. O grau zero nao apresenta calcificaçoes, o grau l tem apenas calcificaçoes isoladas, o grau 2a tem septos pequenos, o grau 2b tem septos grandes e o grau 3 tem cotilédones completamente delimitados. Comparou estes graus placentários com parâmetros da biometria fetal e com maturidade pulmonar dos recém-nascidos. Encontrou significaçao estatística para o diâmetro biparietal, comprimento femoral e idade gestacional ecográfica. Somente dois recém-nascidos desenvolveram dificuldade respiratória e ambos sobreviveram. Conclui que existe correlaçao entre os graus placentários e idade gestacional, assim como com maturidade fetal. Finalmente, propoe a incorporaçao da nova classificaçao, simples, efetiva e realizada com metodologia inócua, nao invasiva, entre os métodos utilizados para estimar maturidade fetal. Os procedimentos invasivos devem ser reservados para situaçoes especiais.


Subject(s)
Humans , Female , Pregnancy , Calcification, Physiologic , Classification , Gestational Age , Placenta/physiology , Abdomen/embryology , Birth Weight , Femur/embryology , Fetal Organ Maturity , Parietal Bone/embryology , Placenta , Predictive Value of Tests , Sensitivity and Specificity , Ultrasonography, Prenatal
6.
Revue Maghrebine de Pediatrie [La]. 1995; 5 (6): 319-21
in English | IMEMR | ID: emr-39450
7.
Rev. imagem ; 11(2): 77-9, abr.-jun. 1989. tab
Article in Portuguese | LILACS | ID: lil-77581

ABSTRACT

Foram calculados os índices comprimento do fêmur/circunferência abdominal x 100 (F/CA x 100) para os valores do fêmur (F) e da circunferência abdominal (CA) obtidos ecograficamente nos exames de 660 fetos durante gestaçöes normais. Foram obtidas as medidas e a varibilidade para cada duas semanas entre 13 e 42 semanas entre 13 e 42 semanas de idade gestacional (IG). Acima de 18 semanas de gestaçäo os índices tendem a manter-se constantes em torno do valor 21, com variabilidade oscilando entre 2,2 e 4,4, e permitem suspeitar de crescimento intra-uterino retardado assimétrico, bem como os macrossômicos assimétricos, independentemente de se conhecer a IG. Esses índices também permitem suspeitar de erros nas medidas de F e CA independentemente de se conhecer a IG


Subject(s)
Pregnancy , Humans , Female , Abdomen/embryology , Femur/embryology , Gestational Age , Pregnancy , Prenatal Diagnosis , Ultrasonography
SELECTION OF CITATIONS
SEARCH DETAIL