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Intrarenal Hemodynamic Parameters Correlate with Glomerular Filtration Rate and Digital Microvascular Damage in Patients with Systemic Sclerosis.
MedLine Citation:
PMID:  22192932     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
OBJECTIVES: To evaluate intrarenal arterial stiffness by Doppler ultrasound and examine the correlation between renal Doppler indices, glomerular filtration rate, and digital microvascular damage in systemic sclerosis patients. METHODS: Thirty systemic sclerosis patients and 30 healthy controls were enrolled in this study. Doppler indices of intrarenal arterial stiffness, peak systolic flow velocity, end diastolic flow velocity, resistive index, pulsative index, and systolic/diastolic (S/D) ratio were measured on the interlobar artery of both kidneys. Glomerular filtration rate was measured using Tc(99m) diethylenetriamine pentaacetic acid (DTPA). Equation 7 from the Modification of Diet in Renal Disease was used to estimate glomerular filtration rate. Nailfold videocapillaroscopy findings were classified as early, active, and late patterns. RESULTS: The intrarenal arterial stiffness, evaluated by Doppler indices, was higher in systemic sclerosis patients than healthy controls. In systemic sclerosis patients pulsative index (r = -0.69), resistive index (r = -0.75), and S/D ratio (r = -0.74) showed a negative correlation with measured glomerular filtration rate (P < 0001). High correlation (P = 0008) was observed between measured and estimated glomerular filtration rate (r = 0.55). Pulsative index, resistive index, and S/D ratio significantly increased with progression of capillaroscopic damage. Conversely, measured glomerular filtration rate significantly decreased with capillaroscopic damage progression. CONCLUSIONS: Doppler indices of intrarenal arterial stiffness are noninvasive diagnostic tests to evaluate renal damage in SSc patients. Intrarenal arterial stiffness and glomerular filtration rate correlate with capillaroscopic microvascular damage.
Authors:
Edoardo Rosato; Antonietta Gigante; Biagio Barbano; Rosario Cianci; Ilenia Molinaro; Carmelina Rossi; Rita Massa; Antonio Amoroso; Simonetta Pisarri; Felice Salsano
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-12-20
Journal Detail:
Title:  Seminars in arthritis and rheumatism     Volume:  -     ISSN:  1532-866X     ISO Abbreviation:  -     Publication Date:  2011 Dec 
Date Detail:
Created Date:  2011-12-23     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  1306053     Medline TA:  Semin Arthritis Rheum     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011 Elsevier Inc. All rights reserved.
Affiliation:
Department of Clinical Medicine, Clinical Immunology Unit-Scleroderma Center, Sapienza University of Rome, Rome, Italy.
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