Home Print this page Email this page Users Online: 449
Home About us Editorial board Search Ahead of print Current issue Archives Submit article Instructions Subscribe Contacts Login 
Year : 2018  |  Volume : 25  |  Issue : 2  |  Page : 118-123

A comparative ultrasonographic evaluation of intrarenal artery resistive index among hypertensive and normotensive adults in north-western Nigeria

Department of Radiology, St. Nicholas Hospital, Lagos, Nigeria

Correspondence Address:
Dr. Ajana George Madubueze
Department of Radiology, St. Nicholas Hospital, 57 Campbell Street, Lagos Island, Lagos State
Login to access the Email id

DOI: 10.4103/wajr.wajr_34_17

Rights and Permissions

Introduction: Hypertension is a sustained systolic blood pressure equal to or above 140mmHg or diastolic blood pressure equal to or above 90mmHg. The kidneys play a central role in the control of high blood pressure through the renin–angiotensin system. Thus, renovascular changes of myointimal hyperplasia in the intrarenal arteries may cause an increase in renal arterial impedance and eventually irreversible hypertensive nephropathy. The early detection of these renovascular changes using ultrasonography can provide opportunity for immediate intervention toward preventing or at least delaying the irreversible hypertensive nephropathy. Aims and Objectives: The objective of this study is to determine and compare intra-renal resistive index(RRI) in normotensive and hypertensive adults within the age range of 35–70years at Aminu Kano Teaching Hospital, Kano, Nigeria. Materials and Methods: A prospective case–control study of intra-RRI using ultrasound in 150 hypertensive patients and 150 normotensive controls. The mean RRI of the interlobar arteries of both kidneys was measured and recorded. The data were analyzed with the aid of computer-based SPSS 16.0 software for windows. Results: The ages of the study participants ranged between 35 and 70years. The age difference was not statistically significant(P=0.88). The mean interlobar artery resistive index(RI) values were 0.59±0.04 and 0.59±0.03 on the right and left sides, respectively, in normotensive controls while those of hypertensive patients were 0.73±0.03 and 0.73±0.03 for the mean interlobar artery RI values on the right and left sides, respectively, and both were statistically significant. Conclusion: The intra-RRIs were lower in normotensive participants when compared with the hypertensive patients which were statistically significant. These showed that hypertension has significant effects on the kidneys, and with early detection and intervention, irreversible renal damage may be prevented.

Print this article     Email this article
 Next article
 Previous article
 Table of Contents

 Similar in PUBMED
   Search Pubmed for
   Search in Google Scholar for
 Related articles
 Citation Manager
 Access Statistics
 Reader Comments
 Email Alert *
 Add to My List *
 * Requires registration (Free)

 Article Access Statistics
    PDF Downloaded15    
    Comments [Add]    

Recommend this journal