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Abstract(s)
Introdução: O fluxo das artérias uterinas pode ser estudado através do doppler no segundo trimestre e este exame tem sido utilizado para avaliar o aumento de resistência que pode estar associado a complicações tais como insuficiência placentária e eventual desenvolvimento de pré-eclâmpsia, restrição do crescimento intra-uterino e outras complicações. Assim, os objetivos do presente estudo são: caracterizar a população de grávidas do Centro Hospitalar Cova da Beira em que foram detetadas ecograficamente (ecografia do segundo trimestre), índices de pulsatilidade das artérias uterinas maior que 1.5, avaliando variáveis associadas a fatores de risco, clínicas e de tratamento, fazendo ainda uma comparação dos resultados com um grupo controlo.
Métodos: Estudo observacional, analítico e retrospetivo, cujos dados foram recolhidos dos processos clínicos das grávidas cujo parto resultou um nado-vivo, nascido entre o dia 1 de Julho de 2013 e 30 de Junho de 2016 no Centro Hospitalar Cova da Beira.
Resultados: A amostra é constituída por 94 gestações para o grupo de estudo e 47 gestações para o grupo de controlo. Detetaram-se 38 casos de alto risco (índice de pulsatilidade médio das artérias uterinas maior ou igual que 1.5) e 56 casos de risco moderado (apenas uma das artérias uterinas com índice de pulsatilidade maior que 1.5). Verificou-se, pela análise inferencial, correlações entre a variável dependente com as variáveis hábitos tabágicos, gravidez medicamente assistida, restrição do crescimento intra-uterino e índice de APGAR menor que 7. Também se verificou correlação entre o uso de ácido-acetilsalicílico no grupo de risco moderado com as variáveis peso do recém-nascido à nascença, idade gestacional, tipo de parto e distúrbios do ritmo cardíaco do recém-nascido.
Conclusão: Este estudo fornece mais provas quanto à associação do índice de pulsatilidade das artérias uterinas a certas variáveis associadas a fatores de risco, variáveis clínicas e de tratamento. Assim, a determinação da resistência ao nível da circulação útero-placentária no segundo trimestre de gestação mediante medição do índice de pulsatilidade é um teste útil para a identificação precoce de certas complicações.
Introduction: The flow of uterine arteries can be studied by doppler in the second trimester and this method has been used to assess the increase in resistance that may be associated with complications such as placental insufficiency and eventual development of preeclampsia, intrauterine growth restriction and other complications. Thus, the aims of the present study are: to characterize the population of pregnant women at the Centro Hospitalar Cova da Beira where uterine artery pulsatility indexes higher or equal to 1.5 detected during second trimester echography, by analyzing risk factors, clinical and treatment variables as well as comparing of the results with a control group. Methods: This is an observational, analytical and retrospective study. Data was obtained from the clinical files of pregnant women whose delivery resulted in a live birth, born between July 1, 2013 and June 30, 2016 at Centro Hospitalar Cova da Beira. Results: The sample consisted of 94 pregnancies in the study group and 47 pregnancies in the control group. 38 high-risk cases (mean pulsatility index of the uterine arteries higher or equal to 1.5) and 56 cases of moderate risk (only one of uterine arteries with a pulsatility index higher than 1.5). Correlations were found in the inferential analysis between the dependent variable with smoking habits, medically assisted pregnancy, intrauterine growth restriction and APGAR index below 7. There was also a correlation between the use of acetylsalicylic acid in the moderate risk group with the variables weight of the newborn at birth, gestational age, type of delivery and disturbances of the newborn's heart rhythm. Conclusion: This study gives further evidence of the association of uterine artery pulsatility index with certain risk factors, clinical and treatment variables. Thus, the determination of resistance to the utero-placental circulation in the second trimester of pregnancy by measuring the pulsatility index is a useful test for the early identification of certain complications.
Introduction: The flow of uterine arteries can be studied by doppler in the second trimester and this method has been used to assess the increase in resistance that may be associated with complications such as placental insufficiency and eventual development of preeclampsia, intrauterine growth restriction and other complications. Thus, the aims of the present study are: to characterize the population of pregnant women at the Centro Hospitalar Cova da Beira where uterine artery pulsatility indexes higher or equal to 1.5 detected during second trimester echography, by analyzing risk factors, clinical and treatment variables as well as comparing of the results with a control group. Methods: This is an observational, analytical and retrospective study. Data was obtained from the clinical files of pregnant women whose delivery resulted in a live birth, born between July 1, 2013 and June 30, 2016 at Centro Hospitalar Cova da Beira. Results: The sample consisted of 94 pregnancies in the study group and 47 pregnancies in the control group. 38 high-risk cases (mean pulsatility index of the uterine arteries higher or equal to 1.5) and 56 cases of moderate risk (only one of uterine arteries with a pulsatility index higher than 1.5). Correlations were found in the inferential analysis between the dependent variable with smoking habits, medically assisted pregnancy, intrauterine growth restriction and APGAR index below 7. There was also a correlation between the use of acetylsalicylic acid in the moderate risk group with the variables weight of the newborn at birth, gestational age, type of delivery and disturbances of the newborn's heart rhythm. Conclusion: This study gives further evidence of the association of uterine artery pulsatility index with certain risk factors, clinical and treatment variables. Thus, the determination of resistance to the utero-placental circulation in the second trimester of pregnancy by measuring the pulsatility index is a useful test for the early identification of certain complications.
Description
Keywords
Artérias Uterinas Fluxometria Doppler Índice de Pulsatilidade Pré-Eclâmpsia Rciu