Atherosclerosis
Conditions
Brief summary
The investigators will study Radial artery injury and endothelial function following trans-radial cardiac catheterisation. Radial artery injury will be quantified pre- and post- angiography using Optical Coherence Tomography. The participants will also have radial endothelial function assessed using flow-mediated dilatation at baseline, 24 hours, one week, one month and three months post- angiography. Blood will be taken pre and 24 hours post angiography for characterisation of endothelial progenitor cell numbers and function. The hypothesis is that trans-radial catheterisation will cause a reduction in flow-mediated dilatation which peaks at 24 hours and recovers at three months. The investigators hope to correlate the rate of this recovery with peri-procedural progenitor cell numbers.
Interventions
Sponsors
Study design
Eligibility
Inclusion criteria
* Stable outpatient population aged between 18-85 attending for trans-radial cardiac catheterisation
Exclusion criteria
* Recent myocardial infarction (\<3 months) * Severe aortic stenosis * Chronic renal failure (eGFR\<30) * Inability to give informed consent
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Change in Flow-mediated dilatation | baseline, 24 hours, one week, four weeks and three months post-angiography | Radial artery flow-mediated dilatation will be assessed at the above stated time points |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Radial artery injury | Baseline and up to 1 hour Post angiograpy sheath insertion | Optical coherence tomography examination of the radial artery will be made at baseline and following sheath insertion. |
| Endothelial progenitor cell number an function Endothelial progenitor cell number and function | Baseline and at 24 hours post-angiogram | — |
Countries
United Kingdom