[Too many heart catheter procedures in Germany ?]

Area of Science:

• Cardiovascular medicine
• Health services research
• Interventional cardiology

Background:

• Germany exhibits higher absolute numbers of cardiovascular procedures compared to other European nations.
• This disparity has led to arguments suggesting overuse of cardiac interventions in Germany.
• Alternative indicators for assessing the appropriate use of cardiovascular resources are therefore needed.

Purpose of the Study:

• To compare the relationship between diagnostic cardiac catheterizations and subsequent revascularization procedures across eight European countries.
• To evaluate the indication criteria for cardiac catheterizations in a large German patient registry.

Main Methods:

• Comparative analysis of diagnostic cardiac catheterizations and revascularization rates in eight European countries.
• Review of indication criteria within a German registry of 205,581 consecutive inpatients undergoing cardiac catheterization.

Main Results:

• Revascularization rates post-diagnostic cardiac catheterization varied from 39.1% to 57.9% across eight European countries, with Germany at 43.2%.
• No correlation was found between the absolute volume of diagnostic procedures and the percentage of subsequent revascularizations.
• In the German registry, key indications included Acute Coronary Syndrome (22.9%) and varying CCS classes of angina pectoris (CCS II/III: 80.3%, CCS IV: 17.2%).

Conclusions:

• Absolute procedure numbers are insufficient indicators for evaluating the overuse of cardiovascular interventions.
• Establishing standardized data acquisition protocols at European, national, and regional levels is crucial.
• Developing validation procedures for indication criteria is necessary to appropriately assess invasive cardiac procedures across diverse healthcare systems.