Clinical trial NCT03284996: Doppler Ultrasound in Early Detection of Diabetic Nephropathy Type 2 Diabetes Mellitus.
Official title: Role of Doppler Ultrasound in Early Detection of Diabetic Nephropathy in Patients With Type 2 Diabetes Mellitus.
Study type: OBSERVATIONAL
Overall status: UNKNOWN
Conditions: Diabetic Nephropathies
Lead sponsor: Assiut University
Sponsor class: OTHER
First posted: 2017-09-15
Enrollment: 80
Sex: ALL
Minimum age (years): 25
Maximum age (years): 65
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: yes
Observational model: CASE_CONTROL
Time perspective: CROSS_SECTIONAL
Sampling method: PROBABILITY_SAMPLE
Study population: The study was designed as a single-center case control study in which we'll evaluate intra-renal hemodynamic changes with Doppler sonography in diabetic patients in comparison to non-diabetic controls, by studying 80 cases, 40 cases of patients with type 2 diabetes mellitus from the diabetes \& nephrology outpatient clinic in Assiut University Hospital (group A) and 40 age-matched healthy adults served as a control group (group B).

Brief summary: Doppler sonography provides an easily applicable, non-invasive, and well-established method for investigating renal morphologic characteristics and measuring vascular resistance in the renal parenchyma. Doppler are of strategic importance in providing qualitative and quantitative information about the renal vasculature, which can be obtained through the assessment of the resistive index.

Detailed description: Nephropathy is one of the most common long-term, life-threatening complications causing a high rate of morbidity and mortality among individual patients with type 2 diabetes.

The onset and progression of nephropathy can be delayed by interventions, provided they are instituted early in the course of the disease.

Doppler sonography allows non-invasive method for investigating renal hemodynamics. Renal resistive index measured using Doppler ultrasonography, reflects intra-renal vascular resistance.

Although Doppler sonography clearly does not substitute for renal biopsy, several studies have suggested that it might aid in the management of established renal disease and provide an easily applicable and noninvasive method for investigating renal hemodynamics.

Doppler sonography provides an easily applicable, non-invasive, and well-established method for investigating renal morphologic characteristics and measuring vascular resistance in the renal parenchyma. Doppler are of strategic importance in providing qualitative and quantitative information about the renal vasculature, which can be obtained through the assessment of the resistive index. It is one of the most sensitive parameters in the study of kidney diseases and allows us to quantify the changes in renal plasma flow . A normal resistive index is below 0.7 in adults and children who are six years of age or older.

Eligibility criteria: Inclusion Criteria:

* 1. Type 2 diabetic patients. 2. Serum creatinine \<1.2 mg/dl

Exclusion Criteria:

- 1. patients with known history of renal disease or any systemic diseases with renal complications.

2. Serum creatinine \>1.2 mg/dl

Primary outcomes:
measure: Early detection of diabetic nephropathy in patients with type 2 diabetes mellitus by measuring changes in renal resistive index using Doppler ultrasonography
timeFrame: 2 years
Secondary outcomes:
Other outcomes:
Locations:
Study officials:
References:
citation: Nelson TR, Pretorius DH. The Doppler signal: where does it come from and what does it mean? AJR Am J Roentgenol. 1988 Sep;151(3):439-47. doi: 10.2214/ajr.151.3.439.
citation: Tublin ME, Bude RO, Platt JF. Review. The resistive index in renal Doppler sonography: where do we stand? AJR Am J Roentgenol. 2003 Apr;180(4):885-92. doi: 10.2214/ajr.180.4.1800885. No abstract available.
citation: Tang SC, Chan GC, Lai KN. Recent advances in managing and understanding diabetic nephropathy. F1000Res. 2016 May 31;5:F1000 Faculty Rev-1044. doi: 10.12688/f1000research.7693.1. eCollection 2016.
citation: Mancini M, Masulli M, Liuzzi R, Mainenti PP, Ragucci M, Maurea S, Riccardi G, Vaccaro O. Renal duplex sonographic evaluation of type 2 diabetic patients. J Ultrasound Med. 2013 Jun;32(6):1033-40. doi: 10.7863/ultra.32.6.1033.