2nd International Survey on Interventional Strategies

Study Overview
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Brief Summary
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The study aims to evaluate the decision-making pathways of interventional cardiologists, when assessing patients, presented with stable coronary artery disease.

Detailed Description
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2nd International Survey on Interventional Strategies is a web-based platform. The survey contains specific questions and dedicated case presentations on two major topics. The first part queries the characteristics of the participants, including overall experience in interventional cardiology, annual volume of percutaneous coronary intervention (PCI), and duration of experience with quantitative coronary angiography (QCA), intravascular ultrasound (IVUS),optical coherence tomography (OCT), fractional flow reserve (FFR) and non-hyperaemic pressure ratios (NHPR). The survey uses here predefined categories and single-choice questions. The second part investigates personal strategies for evaluating angiographically intermediate stenoses in the catheterization laboratory. Here, participants are asked to evaluate 5 complete coronary angiograms. All cases are characterised as stable angina without relevant changes on resting ECG. No information about non-invasive testing is known or provided. Here participants are asked to (1) localise all relevant stenoses by indicating the involved segment; (2) define percent diameter stenosis (%DS) by visual estimate; and (3) determine the significance of the stenosis of interest. In cases of angiographic uncertainty, the preferred diagnostic tool is asked to be selected from the arsenal available in the catheterisation laboratory, namely QCA, IVUS, OCT, FFR or NHPR. Participants are asked to make their decisions assuming ideal world conditions, without considering any financial restrictions or local regulations, but only after the best clinical practice achievable in this virtual catheterisation laboratory.

Official Title
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2nd International Survey on Interventional Strategies

Conditions
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Coronary Artery Disease

Participation Criteria
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Eligibility Criteria
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Inclusion criteria Interventional cardiologists Interventional cardiologists in training
Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Level of experience in interventional cardiology<br>Total cohort will be grouped according to experience in interventional cardiology, as defined by a single choice questionnaire: Yearly personal PCI volume Less than 75 / Between 75 and 150 / Between 151 and 250 / More than 250 | |
| Level of experience with intravascular ultrasound<br>Total cohort will be grouped according to experience with intravascular ultrasound, as defined by a single choice questionnaire: General: No experience / Less than 1 year / Between 1 and 3 years / Between 3 and 5 years / More than 5 years Yearly: None / Less than 15 / Between 15 and 50 / More than 50 | |
| Level of experience with optical coherence tomography<br>Total cohort will be grouped according to experience with optical coherence tomography, as defined by a single choice questionnaire: General: No experience / Less than 1 year / Between 1 and 3 years / Between 3 and 5 years / More than 5 years Yearly: None / Less than 15 / Between 15 and 50 / More than 50 | |
| Level of experience with fractional flow reserve<br>Total cohort will be grouped according to experience with fractional flow reserve, as defined by a single choice questionnaire: General: No experience / Less than 1 year / Between 1 and 3 years / Between 3 and 5 years / More than 5 years Yearly: None / Less than 50 / Between 50 and 150 / Between 151 and 250 / More than 250 | |
| Level of experience with non-hyperaemic pressure ratios<br>Total cohort will be grouped according to experience with non-hyperaemic pressure ratios, as defined by a single choice questionnaire: General: No experience / Less than 1 year / Between 1 and 3 years / Between 3 and 5 years / More than 5 years Yearly: None / Less than 50 / Between 50 and 150 / Between 151 and 250 / More than 250 | |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Need for using any additional diagnostic tool | It will be assessed, how often participants express their desire to use one or other additional diagnostic tool to make a decision about lesion significance | One month | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Need for using any additional diagnostic tool in different subgroups | It will be assessed, how often the different subgroups of participants (i.e. by age, by interventional experience, by experience with different tools) express their desire to use one or other additional diagnostic tool to make a decision about lesion significance | One month | 
| Accuracy of visually estimated lesion severity | Visually estimated diameter stenosis will be compared to quantitatively assessed diameter stenosis | One month |