Clinical Trials Logo
NCT number NCT03186833
Study type Observational
Source University Hospitals Coventry and Warwickshire NHS Trust
Contact Danish Ali, MB ChB, MRCP
Phone +442476964000
Email danish.ali@uhcw.nhs.uk
Status Recruiting
Phase N/A
Start date June 6, 2017
Completion date April 2019

Clinical Trial Summary

The study addresses the hypothesis that a gradual build-up in arterial resistance and microvascular endothelial dysfunction due to common comorbidities such as hypertension and diabetes mellitus, on top of age related vascular and cardiac changes (mainly fibrosis and hypertrophy), is responsible for HFpEF. The HFpEF syndrome is commonly seen in elderly subjects (often females) with hypertension and diabetes.

The investigators will investigate the vascular function, cardiovascular performance and myocardial fibrosis in different cohorts of subjects to try and prove this hypothesis. There will be 5 groups of subjects, all ≥ 70 years of age, as follows:

A) Normal healthy volunteers without major comorbidities including hypertension or diabetes B) Patients with hypertension only (without diabetes mellitus) C) Patients with hypertension AND diabetes mellitus D) Patients with HFpEF. E) A parallel group of patients with Heart Failure with reduced Ejection Fraction (HFrEF) group.

Arterial resistance measured by pulse wave velocity will be the primary measure and will be compared between groups A to D. A separate comparison will be made between groups D and E. Other secondary measures will focus on endothelial function (Laser Doppler measurements) and other cardiovascular performance measures (peak VO2 by CPEX, 6-minute walk distance). Bloods samples will be taken for NT-proBNP, high sensitivity Troponin T, Galectin 3 and also stored for testing later for vascular biomarkers.


Clinical Trial Description

The study will be a pathophysiological, single-centre, observational study, in which all 4 groups, including the parallel-group will be investigated in terms of qualitative-, echocardiographic-, arterial resistance, exercise testing (CPEX and 6-MWT), endothelial dysfunction assessment by Laser Doppler and vascular biomarker measurements. We intend to investigate if there is increasing arterial resistance from group "A" to group "D" and a significant difference in arterial resistance between groups "D" and "E" by measuring the PWV.

Primary Outcome Our primary outcome will be a difference in arterial resistance between the groups and the parallel group, as measured by aortic PWV.

Secondary Outcomes

The secondary outcomes are to assess and compare endothelial function and cardiovascular performance in all groups as measured by the following:

- Blood tests: NTproBNP, Galectin-3

- Urinalysis: Albumin, Creatinine and Metabolite profiles ("metabolomics"), related to cardiovascular risk and insulin resistance

- Transthoracic echocardiography (TTE) indices of LV diastolic function, tissue Doppler imaging and strain rate imaging

- Exercise tolerance: 6-minute walk test and a Cardiopulmonary Exercise Test (CPEX)

- Microvascular function: Laser Doppler


Study Design


Related Conditions & MeSH terms


See also
Status Clinical Trial Phase
 Recruiting NCT02459626 - Left Ventricular Stiffness vs. Fibrosis Quantification by T1 Mapping in Heart Failure With Preserved Ejection Fraction N/A
 Recruiting NCT02173548 - Interleukin-1 Blockade in HF With Preserved EF Phase 2
 Completed NCT02638961 - Inspiratory Muscle Training and Functional Electrical Stimulation for Treatment of HFpEF N/A
 Not yet recruiting NCT03184311 - High-intensity Interval Training in Heart Failure Patients With Preserved Ejection Fraction N/A
 Not yet recruiting NCT03141567 - LYmphangiogenesis FacTors in Heart Failure States N/A
 Recruiting NCT02744339 - Pharmacodynamic Effects of Riociguat in Pulmonary Hypertension and Heart Failure With Preserved Ejection Fraction Phase 2
 Not yet recruiting NCT03195660 - Adherence to ASV Therapy in Heart Failure With Preserved Ejection Fraction Feasibility Study N/A
 Recruiting NCT02923609 - Cell Therapy in HFpEF Phase 2
 Completed NCT01919177 - Effect of Inorganic Nitrates (Beetroot Juice) on Arterial Hemodynamics and Exercise Capacity Phase 2
 Completed NCT01431027 - Left Ventricular Torsional Hysteresis: A Global Parameter for Diastolic Function N/A
 Terminated NCT01347125 - ImCardia for DHF to Treat Diastolic Heart Failure (DHF) Patient a Pilot Study Phase 0
 Active, not recruiting NCT03099889 - WHISH-2-Prevent Heart Failure N/A