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Diastolic Dysfunction and Pulmonary Hypertension in T2DM With Microalbuminuria

2026년 9월 21일 업데이트: Shady Ashraf Kassem, Assiut University

Diastolic Dysfunction and Pulmonary Hypertension in Type 2 Diabetes Mellitus With Microalbuminuria in Upper Egypt

This is a cross-sectional observational study comparing echocardiographic markers of left ventricular diastolic function and pulmonary artery systolic pressure among healthy controls and patients with type 2 diabetes mellitus, stratified by albuminuria status (normal, microalbuminuria, macroalbuminuria) according to KDIGO 2024 criteria. The study is being conducted in Upper Egypt and aims to characterize the relationship between the albuminuria spectrum and cardiac diastolic/pulmonary vascular involvement in type 2 diabetes, alongside glycemic control and diabetes duration.

연구 개요

상태

아직 모집하지 않음

정황

제2형 당뇨병

상세 설명

Type 2 diabetes mellitus (T2DM) is associated with subclinical cardiac abnormalities that often precede overt heart failure. Diabetic cardiomyopathy is characterized early by impaired left ventricular relaxation and increased filling pressures, detectable echocardiographically as left ventricular diastolic dysfunction (LVDD), frequently before any drop in ejection fraction. Pulmonary hypertension (PH) is increasingly recognized as a comorbid finding in diabetic populations, potentially arising secondary to diastolic dysfunction, microvascular disease, or both.

Albuminuria is a graded marker of generalized microvascular endothelial dysfunction in diabetes, classified by KDIGO 2024 criteria into normal-to-mildly-increased, moderately increased (microalbuminuria), and severely increased (macroalbuminuria) categories, corresponding to progressive cardiovascular and renal risk. While microalbuminuria in isolation has been linked to adverse cardiopulmonary outcomes, the relationship between the full albuminuria spectrum and echocardiographic indices of diastolic dysfunction and PH has not been well characterized, particularly against a non-diabetic control benchmark, in an Upper Egyptian population.

This protocol compares standard transthoracic echocardiographic markers of diastolic dysfunction and PH, alongside glycemic control (HbA1c) and diabetes duration, across four groups: healthy controls and T2DM patients with normal albuminuria, microalbuminuria, and macroalbuminuria.

연구 유형

관찰

등록 (추정된)

120

연락처 및 위치

이 섹션에서는 연구를 수행하는 사람들의 연락처 정보와 이 연구가 수행되는 장소에 대한 정보를 제공합니다.

연구 연락처

이름: shady Elsdfy, MD
전화번호: 01028792280
이메일: elsdfyshady@gmail.com

연구 장소

이집트
- Asyut Governorate
  - Asyut, Asyut Governorate, 이집트, 71515
    - Assiut University Hospital
    - 연락하다:
      
      Shady A Omar, MBBCh
      
      전화번호: 01028792280
      
      이메일: elsdfyshady@gmail.com
    - 연락하다:
      
      Mohamed Faisal Adawy, Lecturer
      
      전화번호: +20 10 1244126
      
      이메일: DR-m.faisal85m@aun.edu.eg

참여기준

연구원은 적격성 기준이라는 특정 설명에 맞는 사람을 찾습니다. 이러한 기준의 몇 가지 예는 개인의 일반적인 건강 상태 또는 이전 치료입니다.

자격 기준

공부할 수 있는 나이

18년 이상 (성인, 고령자)

건강한 자원 봉사자를 받아들입니다

예

연구 대상 성별

모두

샘플링 방법

비확률 샘플

연구 인구

Patients recruited from Cardiology and Internal Medicine/Endocrinology outpatient clinics and inpatient wards at Assiut University Hospital, Upper Egypt, along with age- and sex-matched non-diabetic controls.

설명

Inclusion Criteria:

Four groups will be recruited: (1) healthy, non-diabetic controls, age- and sex-matched to the diabetic groups; (2) T2DM with normal albuminuria (KDIGO A1, urine ACR <30 mg/g); (3) T2DM with microalbuminuria (KDIGO A2, ACR 30-300 mg/g); (4) T2DM with macroalbuminuria (KDIGO A3, ACR >300 mg/g). Diabetic groups: adult patients (≥18 years) with an established diagnosis of type 2 diabetes mellitus. Control group: adults (≥18 years) without diabetes (confirmed by fasting glucose/HbA1c), age- and sex-matched to the diabetic groups. All groups: willingness and ability to provide informed consent.

Exclusion Criteria:

Type 1 diabetes or secondary forms of diabetes; known primary valvular heart disease (moderate or greater); prior myocardial infarction or established coronary artery disease with regional wall motion abnormality; reduced ejection fraction (EF < 50%) on screening echocardiography; chronic kidney disease stage ≥4 or dialysis dependence; known chronic lung disease or other secondary causes of pulmonary hypertension unrelated to left heart disease; atrial fibrillation or other rhythm disturbance precluding reliable diastolic assessment; pregnancy. Note: systemic hypertension is not an exclusion criterion, given its high prevalence as a diabetes comorbidity; it will instead be recorded and analyzed as a covariate.

공부 계획

이 섹션에서는 연구 설계 방법과 연구가 측정하는 내용을 포함하여 연구 계획에 대한 세부 정보를 제공합니다.

연구는 어떻게 설계됩니까?

디자인 세부사항

관찰 모델: COHORT
시간 관점: CROSS_SECTIONAL

그룹/코호트 수

코호트 및 개입

그룹/코호트
Group 1 Group/Cohort Label: Healthy Controls Description: Non-diabetic adults, age- and sex-matched to the diabetic groups, confirmed by fasting glucose/HbA1c.
Group 2 Group/Cohort Label: T2DM with Normoalbuminuria Description: Adult patients with type 2 diabetes mellitus and normal urinary albumin-to-creatinine ratio (KDIGO A1, ACR <30 mg/g).
Group 3 Group/Cohort Label: T2DM with Microalbuminuria Description: Adult patients with type 2 diabetes mellitus and moderately increased albuminuria (KDIGO A2, ACR 30-300 mg/g).
Group 4 Group/Cohort Label: T2DM with Macroalbuminuria Description: Adult patients with type 2 diabetes mellitus and severely increased albuminuria (KDIGO A3, ACR >300 mg/g).

연구는 무엇을 측정합니까?

주요 결과 측정

결과 측정	측정값 설명	기간
Diastolic Dysfunction and Pulmonary Hypertension Across Albuminuria Groups 기간: At time of enrollment (single time-point cross-sectional assessment)	Title: Prevalence of left ventricular diastolic dysfunction (LVDD) Description: Percentage of participants with LVDD, defined by the 2016 ASE/EACVI algorithm using transthoracic Doppler echocardiography, compared between the control, T2DM-normoalbuminuria, T2DM-microalbuminuria and T2DM-macroalbuminuria groups. Time Frame: At enrollment (single study visit) Outcome 2 Title: Grade of LVDD Description: Percentage of participants in each LVDD grade (grade I, II, III), graded according to the 2016 ASE/EACVI guidelines using transthoracic Doppler echocardiography, compared between the four groups. Time Frame: At enrollment (single study visit) Outcome 3 Title: Frequency of pulmonary hypertension (PH) Description: Percentage of participants with echocardiographic pulmonary hypertension, defined per 2022 ESC/ERS criteria using transthoracic Doppler echocardiography, compared between the four groups. Time Frame: At enrollment (single study visit).	At time of enrollment (single time-point cross-sectional assessment)

2차 결과 측정

결과 측정	측정값 설명	기간
Correlation of Diastolic Dysfunction and PASP with Glycemic Control and Diabetes Duration 기간: At time of enrollment (single time-point cross-sectional assessment)	Correlation of diastolic dysfunction parameters and pulmonary artery systolic pressure (PASP) with HbA1c and diabetes duration within the diabetic subgroups, using Pearson or Spearman correlation as appropriate. Multivariable regression will be used to adjust for hypertension and other covariates influencing these associations across all four groups.	At time of enrollment (single time-point cross-sectional assessment)

공동 작업자 및 조사자

여기에서 이 연구와 관련된 사람과 조직을 찾을 수 있습니다.

스폰서

Assiut University

수사관

수석 연구원: shady A Elsdfy, MD, Assiut University

연구 기록 날짜

이 날짜는 ClinicalTrials.gov에 대한 연구 기록 및 요약 결과 제출의 진행 상황을 추적합니다. 연구 기록 및 보고된 결과는 공개 웹사이트에 게시되기 전에 특정 품질 관리 기준을 충족하는지 확인하기 위해 국립 의학 도서관(NLM)에서 검토합니다.

연구 주요 날짜

연구 시작 (추정된)

2026년 10월 5일

기본 완료 (추정된)

2028년 10월 5일

연구 완료 (추정된)

2029년 6월 5일

연구 등록 날짜

최초 제출

2026년 9월 17일

QC 기준을 충족하는 최초 제출

2026년 9월 21일

처음 게시됨 (실제)

2026년 9월 24일

연구 기록 업데이트

마지막 업데이트 게시됨 (실제)