Browsing by Author "Yusuf, B. P."

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    Comparative ultrasound evaluation of renal resistive index in hypertensive and normotensive adults in ibadan, south western, Nigeira.
    (Nigerian Association of Nephrology, 2012) Atalabi, O. M; Yusuf, B. P.
    Background: Renal resistive index is a useful measure for quanitifying alterations in renal blood flow.It is considered to be a refection of renal parenchymal vascular resistance. The aim of this study is to determine the difference in renal resistive index between patients with essential hypertension and non- hypertensive control group. Patients and Methods: Seventy-two patients with essential hypertension of varying duration and 68 patients without hypertension were evaluated sonographically in this prospective study. The renal resistive index was determined by use of doppler ultrasound of the interlobar arties. Results: Mean renal resistive index in the hypertensive patients was 0.60+0.04 (+SD) and in the controls was 0.56+0.04 (+SD) (p=<0.001). Renal resistive index correlated significcantly with systolic blood pressure (r=0.382), (p=<0.001) and diastolic blood pressure (r= 0.382, p=<0.001) and diastolic blood pressure (r=0.364,p=<0.001). It correlated weakly with the body mass index (r=).170, 0.044). No significant association was found with age, gender, duration of hypertension and creatinine clearance, mulitple regression linear analysis showed systolic blood pressure to be the only independent variable influencing renal resistive index.
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    Renal resistive index in normal adults in Ibadan, South western Nigeria: a preliminary report.
    (2010) Yusuf, B. P.; Atalabi, O. M
    "Colour Doppler sonography is used for visualization of blood flow,non-invasive evaluation of vascular resistance and measurements of velocities in renal and intrarenal arteries. Its usefulness in the evaluation of the kidneys ranges from the diagnosis of renal arterystenosis and renovascular disease to the assessment of intrarenal hemodynamics in several different pathological conditions such as essential hypertension, acute and chronicrenal failure, pre and post transplant assessment and graft:rejection. Objective:To determine the normal value of Renal Resistive Index in a healthy group of individuals in order to compare findings with those in existing literature and to serve as a normogram among Nigerians. Materials and Methods: Colour duplex Doppler sonography of interlobar arteries was performed in 68 patients with normal blood pressure, normal blood sugar and no known renal disease or any significant medical condition with normal B-mode sonography of their kidneys. The mean renal resistive index of the interlobar arteries was compared on the right and left, males and females and correlated with age, height, body mass index and renal volume. Results:The mean renal resistive index was 0.56 (±0.04) in the right and left kidney. No difference in mean was seen between the males and females. No significant correlation was seen with age ,height ,body mass index and renal volume. Conclusion: This study has provided normative value of renal resistive index' in a Nigerian population and established this data for use in future studies. "