atherosclerose peripheral artery disease
Conditions
Interventions
None listed
Sponsors
Ikazia Ziekenhuis
Eligibility
Age
18 Years to 99 Years
Inclusion criteria
Inclusion criteria: All people who have had an aorto-iliac stent due to claudication intermittens informed consent
Exclusion criteria
Exclusion criteria: impossibility to follow up Persistent pressure loss after stenting
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| The patients shall undergo an Ankle-Brachial Index (in rest and after treadmill test) (ABI), DUS and blood analysis. Within a month an angiography (DSA) with pressure measurement (IAPM) shall be performed. With duplex ultrasound (DUS) the peak systolic velocity (PSV), in pre, in and post stent area shall be measured. The elevation in blood velocity shall be valued as PSV ratio (in-stent/pre-stent). Within a month an angiography (DSA) with pressure measurement (IAPM) shall be performed. During intra arterial pressure measurement (IAPM), the mean systolic pressure shall be measured in pre, in and post stented area. IAPM is generally known as the *golden standard*. The PSV ratio can be compared with the pressure loss over the stented area and the DSA (stenosis grade). These results can serve as reference values. | — |
Secondary
| Measure | Time frame |
|---|---|
| Angiographic grade (morphologic view) of stenosis will also be compared with the PSV ratio measured with DUS. Ankle-brachial index test (ABI): In rest and after treadmill test. (see chapter 6.2) All patients will undergo an ABI in rest and after treadmill test in order to determine the Rutherford classification of peripheral artery disease. This classification is the current standard for categorizing clinical assessment. Blood analysis. Blood analysis shall be performed for sub analysis. If a second pressure loss is being measured after a PTA or selective stenting and new DUS PSV ratio are being measured. These values, The Δ PSV ratio versus the Δ pressure loss, shall be calculated and transformated in a x and y axis table. | — |
Countries
Netherlands
Outcome results
None listed