Ophthalmic artery Doppler velocimetry in healthy pregnancy

Carneiro, Raquel S.; Sass, Nelson; Diniz, Angélica Lemos Debs; Souza, Éder Viana de; Torloni, Maria Regina; Moron, Antônio Fernandes

doi:10.1016/j.ijgo.2007.09.028

Cited by 43 publications

(88 citation statements)

References 22 publications

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“…It is easy to perform, noninvasive, and inexpensive. 7,[14][15][16][17] For a method to be valid, it must have no statistically significant intraobserver or interobserver variability. Reproducibility is one of the main principles of scientific methods.…”

Section: Resultsmentioning

confidence: 99%

“…The Doppler sample volume was adjusted at 2 to 3 mm. 1,2,5,7,[13][14][15][16][17]27 The participants were examined in the supine position by each observer. Gel was applied to the closed eyelid, and the transducer was carefully placed on the eyelid to avoid creating pressure-derived artifacts.…”

Section: Methodsmentioning

confidence: 99%

“…After 6 consecutive blood flow velocity waveforms with similar sizes and shapes were obtained, measurements were performed on a single waveform (Figure 1). 1,2,5,7,[13][14][15][16][17] The resistive index, pulsatility index, and peak ratio were measured. 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).…”

Section: Methodsmentioning

confidence: 99%

“…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%

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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: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Doppler Velocimetry of the Ophthalmic Artery

Oliveira

Sá

Velarde

et al. 2012

Journal of Ultrasound in Medicine

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“…A literatura não mostra diferenças estatisticamente significantes que indiquem a necessidade de avaliação em ambos os olhos, assim como não encontra diferenças relacionadas com a idade gestacional no momento da realização do exame 18,23,[25][26][27] . Outro aspecto avaliado no presente estudo foi a morfologia da onda no traçado do Doppler.…”

Section: Gruposunclassified

Comportamento dopplervelocimétrico das artérias oftálmicas nas síndromes hipertensivas da gestação

Netto¹,

da²

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Silva Netto, José Paulo da.Comportamento dopplervelocimétrico das artérias oftálmicas nas síndromes hipertensivas da gestação / José Paulo da Silva Netto. IP= 1,205 + 0,326;1,555 + 0,373, PVS: 34,280 + 9,306; 35,206 + 9,941, PVD: 26,513 + 10,060;19,752 + 5,847, VDF: 11,951 + 4,060;9,696 + 3,223 e RPV: 0,77 + 0,16; 0,57 + 0,11. Os índices de resistência e de pulsatilidade da artéria oftálmica das gestantes com pré-eclâmpsia foram significativamente inferiores aos das gestantes hipertensas crônicas.

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