Differential Blood Flow in Uterine, Ophthalmic, and Brachial Arteries of Preeclamptic Women

Takata, Masashi; Nakatsuka, Mikiya; Kudo, Takafumi

doi:10.1097/00006250-200211000-00018

Cited by 41 publications

(68 citation statements)

References 21 publications

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“…The peak ratio was defined as the ratio of the flow velocity of the second peak (after the notch) to that of the initial peak (peak systolic velocity; (peak ratio = peak 2/peak 1; Figure 1). 9,10,[13][14][15][16][17] The mean time required for ophthalmic Doppler analysis was approximately 5 minutes.…”

Section: Methodsmentioning

confidence: 99%

Doppler Velocimetry of the Ophthalmic Artery

Oliveira

Sá

Velarde

et al. 2012

Journal of Ultrasound in Medicine

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Doppler Velocimetry of the Ophthalmic Arteryrbital circulation has been assessed by color Doppler imaging for the last 20 years, and patterns of normality have been described for the orbital vessels. The importance of this examination was first shown in ophthalmologic diseases. 1-3 Hata et al 4 were the first to use Doppler velocimetry of the ophthalmic artery in the assessment of pregnant women. Then several authors evaluated this method during pregnancy, especially in patients with hypertension. 5-17 Ocular Doppler sonography has been shown to be an accurate, objective, and promising method in the evaluation of the severity of preeclampsia, which is the major cause of maternal mortality. [18][19][20] Although several authors have published data for ocular Doppler velocimetry, the reliability of the measurement of ophthalmic Doppler indices (resistive index, pulsatility index, and peak ratio) has not been extensively established. Most studies have evaluated the intraobserver reproducibility. [21][22][23][24][25][26] This study aimed to investigate the interobserver reliability in measuring ophthalmic artery Doppler indices. ORIGINAL RESEARCHObjectives-The aim of this study was to investigate the interobserver reliability for measuring ophthalmic artery Doppler indices.Methods-Healthy women (n = 30) were evaluated. The resistive index, pulsatility index, and peak ratio were determined by two independent observers who were blind to each other. A paired t test was used for the comparison of paired samples in the cases of replication between observers. Pearson product-moment correlation was used to study the relationship between the samples. The Bland-Altman graphic approach was used to investigate the agreement between observers.Results-No significant differences were found between the values obtained by the two independent observers for the resistive index and pulsatility index. The difference observed between the values obtained by the observers for the peak ratio was 0.02.Conclusions-Doppler velocimetry is a reproducible technique for evaluation of the resistive index and pulsatility index. For analysis of the peak ratio, an interval of ±0.02 should be considered for the measurement.

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Section: Methodsmentioning

confidence: 99%

Doppler Velocimetry of the Ophthalmic Artery

Oliveira

Sá

Velarde

et al. 2012

Journal of Ultrasound in Medicine

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“…5 Numerous studies have employed FMD during pregnancy and indicate that it is significantly lower in pregnant women with PE and thus could be used as a criterion for screening or to provide a prognosis for this pathology. [6][7][8] Although it is known that PE symptoms are resolved after delivery, some studies have already investigated FMD during the immediate and/or late postpartum in order to determine whether endothelial dysfunction persists and whether it is responsible for future cardiac episodes in women with a history of PE. Some authors have confirmed the persistence of endothelial dysfunction due to FMD for up to three years after delivery.…”

Section: Introductionmentioning

confidence: 99%

“…Takata et al 7 also studied endothelial dysfunction in various levels of PE using measurement of FMD in the brachial artery and Doppler measurements in the uterine and ophthalmic arteries, concluding that FMD was significantly lower in pregnant women with PE than in non-pregnant women. Data obtained by Takata and colleagues also suggests that FMD evaluation of the brachial artery helps to identify the level and severity of PE and is useful in understanding the circulatory condition of women with PE.…”

mentioning

confidence: 99%

Assessment of endothelial function by flow-mediated dilation of the brachial artery in adolescents with a history of preeclampsia or a normotensive pregnancy

Andrade

Carvalho

Mota

et al. 2014

Rev. Bras. Saude Mater. Infant.

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“…Vários autores demonstraram a presença de hiperfluxo em território cerebral na PE, utilizando dopplervelocimetria intracranina (Belfort et al, 1999) e da AO (Takata, Nakatsuka, & Kudo, 2002).…”

Section: Acometimento Cerebrovascular Na Pré-eclâmpsiaunclassified

“…Os índices, por serem independentes do comprimento do vaso e do ângulo de insonação entre o aparelho e o vaso avaliado, são mais vantajosos no estudo de vasos tortuosos e de pequeno calibre Diniz, Moron, Santos, & Sass, 2004;Takata et al, 2002;. …”

Section: Efeito Dopplerunclassified

Alterações antropométricas, hemodinâmicas, hematológicas e bioquímicas na pré-eclâmpsia

Freitas¹

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Differential Blood Flow in Uterine, Ophthalmic, and Brachial Arteries of Preeclamptic Women

Cited by 41 publications

References 21 publications

Doppler Velocimetry of the Ophthalmic Artery

Doppler Velocimetry of the Ophthalmic Artery

Assessment of endothelial function by flow-mediated dilation of the brachial artery in adolescents with a history of preeclampsia or a normotensive pregnancy

Alterações antropométricas, hemodinâmicas, hematológicas e bioquímicas na pré-eclâmpsia

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