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Avaliação hemodinâmica por tonometria de aplanação em gestantes com pre-eclâmpsia precose e tardia

Authors: Poiati, Juliane Rosa;

Avaliação hemodinâmica por tonometria de aplanação em gestantes com pre-eclâmpsia precose e tardia

Abstract

The new concept of early and late preeclampsia established the hypothesis that these two entities may be associated with different models of vascular adaptation. The applanation tonometry is able to evaluate, noninvasively, several vascular features and can be used to study the pathophyology of different forms of preeclampsia. To compare vascular characteristics of pregnant women with early and late preeclampsia, determined by applanation tonometry. Cross sectional and analytical study conducted in 85 pregnant women with preeclampsia (PE) that, at the time of diagnosis, were stratified into early and late PE, according to the gestational age of the clinical manifestation of the disease. The calculation of the sample size was based on the study of Khalil et al. (2009) and estimated at 33 patients per group. It was considered the significance level of 5% (α = 0.05) and 80% power (β = 0.20). It was also evaluated the peripheral and central blood pressure, peripheral and central pulse pressure, augmentation index, the augmentation pressure, subendocardial viability ratio and the ejection duration. All indexes were determined by applanation tonometry (SphygmoCor ®). Statistical analysis were done using SPSS 10.5. Variables were presented as mean and standard deviation, median and percentage. The mean was used for variables with normal distribution and median for variables that did not show normal distribution. For the comparison of the mean in the group with early and late preeclampsia it was used a student t test and, when necessary, the Mann-Whitney test. To compare proportions it was used the qui-quadrado test. It was considered a significance level of 5%. Considering the characteristics of the population studied it was verified that body mass index, proteinuria and gestational age were significantly different between the groups. As for the vascular features determined by applanation... (Complete abstract click electronic access below)

O novo conceito de pré-eclâmpsia precoce e tardia estabeleceu a hipótese de que essas duas entidades possam estar associadas a diferentes modelos de adaptação vascular. A tonometria de aplanação é capaz de avaliar, de forma não invasiva, diversas características vasculares e pode ser utilizada para estudar a fisiopatologia das diferentes formas de pré-eclâmpsia. Comparar as características vasculares de gestantes portadoras de pré-eclâmpsia precoce e tardia, determinadas por meio da tonometria de aplanação. Estudo transversal e analítico realizado em 85 gestantes portadoras de pré-eclâmpsia (PE) que, no momento do diagnóstico, foram estratificadas em PE precoce e tardia, de acordo com a idade gestacional da manifestação clínica da doença. O cálculo do tamanho amostral foi baseado no estudo de Khalil et al. (2009) e estimado em 33 pacientes por grupo. Considerou-se o nível de significância de 5% (α = 0,05) e o poder de 80% (β = 0,20). Foram avaliadas a pressão arterial periférica e central, a pressão de pulso periférica e central, o índice de amplificação, a pressão de aumento, o índice de viabilidade subendocárdica e a duração de ejeção. Todos os índices foram determinados por meio da tonometria de aplanação (SphygmoCor®). A análise estatística foi feita no programa SPSS 10.5. As variáveis foram representadas por média e desvio padrão, mediana e porcentagem. A média foi utilizada para variáveis com distribuição normal e a mediana para variáveis que não apresentaram distribuição normal. Para a comparação das médias dos grupos pré-eclâmpsia precoce e tardia foi utilizado o teste t de Student e, quando necessário, o teste de Mann-Whitney. Para comparação das proporções foi utilizado o teste de qui-quadrado. Foi considerado nível de significância de 5%. Considerando-se as características da população estudada verificou-se...

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Pós-graduação em Ginecologia, Obstetrícia e Mastologia - FMB

Country
Brazil
Keywords

Pre-eclampsia

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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