Key result
The 7F coronary catheter provided significantly better mean diagnostic grades compared to the 5F catheter with either hand or powered injection (1.31 vs 1.72 and 2.00, P≤0.05).
Why the study?
Does a 5F catheter compared to a 7F catheter provide equivalent angiographic quality in patients with ischemic heart disease?
RCT (n=29)
Randomized
Does a 5F catheter compared to a 7F catheter provide equivalent angiographic quality in patients with ischemic heart disease?
Absolute Event Rate: 1.72% vs 1.31%
p-value: p=≤0.05
Angiographic quality is reduced with 5F catheters compared to 7F high flow catheters, suggesting larger lumen catheters may be required for optimal diagnostic angiograms in certain patients.
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5F catheters yield inferior angiographic quality to 7F; challenges equivalence assumptions and extends RCT support for larger-lumen catheters in diagnostic coronary angiography.
Kohli et al. (1989) conducted an RCT in Ischemic heart disease (n=29). 5F coronary catheter (hand and powered injection) vs. 7F coronary catheter (hand injection) was evaluated on Mean visual diagnostic grade (1=Diagnostic, 2=Equivocal, 3=Nondiagnostic) (p=≤0.05). The 7F coronary catheter provided significantly better mean diagnostic grades compared to the 5F catheter with either hand or powered injection (1.31 vs 1.72 and 2.00, P≤0.05).
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