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1.
Int. j. morphol ; 33(3): 942-947, Sept. 2015. ilus
Article in English | LILACS | ID: lil-762568

ABSTRACT

In this study we generated casting specimens of human cerebral blood vessels for twenty-five fetuses and thirty-six adults. The degrees of the angles were measured and comprised for those blood vessels frequently involved in the interventional catheterization.


En este estudio generamos muestras de los vasos sanguíneos cerebrales humanos en veinticinco fetos y treinta y seis adultos. Fueron medidos y comprendidos los ángulos de aquellos vasos sanguíneos implicados frecuentemente en intervenciones de cateterismo.


Subject(s)
Humans , Adult , Brain/blood supply , Catheterization/methods , Cerebral Arteries/anatomy & histology , Fetus/anatomy & histology , Brain/embryology , Cerebral Arteries/embryology
2.
Rev. chil. obstet. ginecol ; 75(6): 405-410, 2010. tab
Article in Spanish | LILACS | ID: lil-577451

ABSTRACT

Antecedentes: La flujometría Doppler fetal es usada de forma rutinaria y sistemática. Es incierta la utilidad clínica del Doppler de la arteria cerebral media (ACM) en fetos del tercer trimestre con crecimiento normal. Objetivo: Determinar los resultados perinatales en fetos del tercer trimestre con índice de pulsatilidad (IP) de la arteria cerebral media (ACM) bajo el percentil 5 comparado con fetos con Doppler cerebral normal. Método: Estudio de cohorte retrospectivo en fetos del tercer trimestre durante 2008. Se seleccionaron dos grupos según IP en la ACM: menor del percentil 5 y mayor del percentil 5. Resultados: Durante el período de estudio 265 fetos cumplieron los criterios de inclusión. Ambos grupos fueron comparables en cuanto a sus características principales. En el grupo con IP menor del percentil 5, la edad gestacional al nacimiento fue mayor: 39,4 vs 38,9 semanas (p=0,001); sin embargo, el número de partos pretérminos fue similar (p=0,89). En el grupo con IP en la ACM menor del 5 se efectuaron 19 (25,7 por ciento) cesáreas por distrés fetal similar al grupo con Doppler cerebral normal 42 (22 por ciento) (p=0,51). No hubo diferencia significativa en ambos grupos respecto al puntaje de Apgar menor de 7 a los 5 minutos (5,4 por ciento vs 3,1 por ciento, p=0,47) ni en el número de ingresos del recién nacido a unidad de cuidados intensivos (10,8 por ciento vs 6,3 por ciento, p=0,32). Conclusiones: Los fetos del tercer trimestre con IP bajo el percentil 5 en el Dopplerde la ACM, muestran resultados perinatales similares a los fetos con Doppler cerebral normal.


Background: Doppler studies are being used routinely and with no specific indication. There is no evidence about the clinical significance of pulsatility index (Pl) below 5th centile in the middle cerebral artery (MCA) in fetuses at third trimester. Objective: To determine perinatal outcomes in fetuses at third trimester with PI<5th centile in the middle cerebral artery (MCA) compared to fetus with normal cerebral Doppler studies. Methods: A retrospective cohort study was designed. We included women pregnant with Doppler studies at third trimester during 2008. We categorized two groups according to the Pl in the MCA, below the 5th centile and above the 5th centile. Results: 265 patients met inclusion criteria. Both groups were similar and homogeneous based on their main characteristics. The Pl below 5th centile group showed a higher mean gestational age 39.4 vs. 38.9 weeks (p=0.001). However, after categorization in preterm delivery below 37 weeks there was no significant difference (p=0.89). In fetuses with PI<5th centile, 19 (25.7 percent) cesarean sections were performed due to fetal distress and similarly 42 (22 percent) cesarean sections were performed in the control group (p=0.51). PI<5th centile was not associated with a 5-min Apgar score below 7 (5.4 percent vs. 3.1 percent, p=0.47). Similarly, there was no difference in the admission to neonatal intensive care unit (10.8 percent vs. 6.3 percent, p=0.31) between both groups. Conclusions: Fetuses at third trimester with pulsatility index below the 5th centile in the cerebral middle artery Doppler have similar perinatal outcomes compared to fetus with normal cerebral Doppler studies.


Subject(s)
Humans , Female , Pregnancy , Infant, Newborn , Cerebral Arteries , Pulsatile Flow/physiology , Ultrasonography, Doppler, Transcranial , Ultrasonography, Prenatal , Cerebral Arteries/embryology , Birth Weight , Gestational Age , Pregnancy Outcome , Pregnancy Trimester, Third , Reference Values , Retrospective Studies , Fetal Growth Retardation
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