Compliance charts to guide non-complex small artery stenting: validation by quantitative coronary angiography.
OBJECTIVE
To determine whether stent sizing derived from manufacturers' compliance charts provides a reasonable in vivo estimate of final minimum lumen diameter (MLD) when compared with quantitative coronary angiography (QCA).


METHODS
Single-centre measurement comparison study.


METHODS
Tertiary referral university hospital.


METHODS
Fifty cases receiving a single stent for non-complex de novo stenosis were randomly selected from the percutaneous coronary intervention database of our high-volume centre. Restenosis, stent thrombosis, bifurcational disease, rotablation, left main or graft stenting, intravascular ultrasound or kissing balloon inflations were exclusion criteria.


METHODS
Equality and limits of agreement (LOA) between compliance chart and QCA measurements of final MLD, especially focusing on patients with small stents<3 mm. The paired t test and Bland-Altman plots were used to compare measurements.


RESULTS
There was no significant difference between compliance chart-derived and QCA final MLD (n=50; mean -0.034 mm, SD 0.35, 95% CI -0.132 to +0.064; p=0.49), with reasonable Bland-Altman LOA between the two methods of assessing final MLD in the overall group (LOA -0.72 to +0.66 mm), as well as in the group of particular interest with Derived final MLD <3 mm (n=30; mean 0.019 mm, SD 0.27, 95% CI -0.082 to +0.119; p=0.71; LOA -0.52 to +0.56 mm).


CONCLUSIONS
Compliance charts provide an acceptable estimate of final MLD and are a reasonable guide to sizing during non-complex stenting, especially in small vessels <3 mm.
Department of Medicine, The University of Queensland, Brisbane, Queensland, Australia; Department of Cardiology, Princess Alexandra Hospital, Brisbane, Queensland, Australia.
Yohan
Y
Chacko
Department of Medicine , The University of Queensland , Brisbane, Queensland , Australia.
J Kimberly
JK
Haladyn
Department of Cardiology , Princess Alexandra Hospital , Brisbane, Queensland , Australia.
Debbie M
DM
Smith
Department of Medicine, The University of Queensland, Brisbane, Queensland, Australia; Department of Cardiology, Princess Alexandra Hospital, Brisbane, Queensland, Australia.
Richard
R
Lim
Imaging and diagnostics; Interventional cardiology