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Doppler velocimetry of the orbital arteries in patients with sickle cell anemia: relationship with biomarkers of hemolysis

Overview of attention for article published in Radiologia Brasileira, February 2017
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Title
Doppler velocimetry of the orbital arteries in patients with sickle cell anemia: relationship with biomarkers of hemolysis
Published in
Radiologia Brasileira, February 2017
DOI 10.1590/0100-3984.2015.0180
Pubmed ID
Authors

Thiago de Oliveira Ferrão, Paulo Ricardo Martins-Filho, Cleverton Aragão, Marlyson Santana, Allan Nascimento, Thayane Cardoso, Rosana Cipolotti

Abstract

To investigate orbital vascular resistance by Doppler velocimetry in patients with steady-state sickle cell anemia, as well as to characterize its relationship with biomarkers of hemolysis. This was a cross-sectional study of two groups: 71 outpatients with sickle cell anemia; and 32 age- and gendermatched, healthy subjects (control group). All participants underwent Doppler velocimetry of the orbital arteries and laboratory tests. All biochemical laboratory markers were abnormal in the sickle cell anemia patients (p < 0.0001 vs. controls). In the patient group, Doppler velocimetry revealed increased flow velocities in the ophthalmic artery and reduced flow velocities in the central retinal artery, as well as high values for the resistance index (RI) and pulsatility index (PI) in both arteries (p < 0.0001 vs. controls). Biomarkers of hemolysis were found to correlate significantly with the RI and PI indices. In the ophthalmic artery, the reticulocyte count showed a moderate direct correlation with RI and with PI. In the central retinal artery, hemoglobin showed a strong inverse correlation with RI and with PI. Orbital vascular resistance, as evaluated by Doppler velocimetry, is elevated in patients with steady-state sickle cell anemia and shows a significant correlation with biomarkers of hemolysis.

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Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 9 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 9 100%

Demographic breakdown

Readers by professional status Count As %
Student > Postgraduate 1 11%
Other 1 11%
Student > Master 1 11%
Unknown 6 67%
Readers by discipline Count As %
Medicine and Dentistry 2 22%
Biochemistry, Genetics and Molecular Biology 1 11%
Unknown 6 67%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 25 April 2017.
All research outputs
#20,660,571
of 25,382,440 outputs
Outputs from Radiologia Brasileira
#245
of 394 outputs
Outputs of similar age
#251,914
of 324,444 outputs
Outputs of similar age from Radiologia Brasileira
#1
of 3 outputs
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