FFR & OCT Guided Staged PCI of LAD Diagonal Bifurcation – Aug 2019

50-year-old female with new onset Class II angina and strongly positive stress MPI for multivessel myocardial ischemia with TID. A Cardiac Cath on June 26, 2019 revealed 3V CAD: 70% severely calcific prox LAD with diagonal bifurcation, 80% LCx-LPL, 80% mid RCA with SYNTAX Score of 23 and LVEF of 60%. Patient underwent successful DES PCI to mid RCA with excellent results. Patient is now planned for FFR & OCT guided staged PCI of LAD diagonal bifurcation using orbital atherectomy and 2-stent (mini-crush) technique.

Q&A

Q Overall, how much is Orbital Atherectomy (OA) use at Mt. Sinai?
A. At MSH we use atherectomy in about 22% of 320-340 PCI cases per month (n= 70 cases). Of this RA in 70%, OA in 28% and ELCA in 2% of cases.
Q And of Rotational Atherectomy (RA)?
A. At MSH we use atherectomy in about 22% of 320-340 PCI cases per month (n= 70 cases). Of this RA in 70%, OA in 28% and ELCA in 2% of cases.
Q How much will this change in 3 years?
A. I expect atherectomy volume and % at MSH will continue to rise in next 3 years, because of selective referral of these calcified complex cases/pts from other interventionalists.
Q What factors are contributing to this change?
A. A large number of interventionalists, do not want to learn or do atherectomy and hence will refer them to ‘Atherectomy center of Excellence’ like MSH. It is good for all; doctors, pts and MSH by providing the best and safest treatment in the complex anatomy.
Q What are the top three technical tips about OA that you would like to share?
A. Top three technical tips for OA are; slow advancement (1mm/sec), slow speed (80k rpm only) and 3-5 times ablation across the lesion due to differential vertical motion of the OA crown.
Q Can you explain about crown size and sizing?
A. We have only one OA crown size (1.25mm) which can give post procedure MLD of 1.6-1.7mm at 80K speed and up to 1.9mm MLD with 120k speed. Another device called Micro-crown (additional ablative surface at the tip) will not be released in USA.
Q And the dedicated wire?
A. OA is a very effective device and 80k speed is sufficient even in large vessels and is associated with less complications (especially perforations).
Q How do you beneficially use the speed of OA?
A. OA is a very effective device and 80k speed is sufficient even in large vessels and is associated with less complications (especially perforations).
Q What has been your worst complication with OA?
A. Large coronary perforation causing hemodynamic collapse is the worst complication of OA.
Q Which seems better for severe calcification - of course, we saw your algorithm. RA or OA?
A. Concentric severe calcification of >270 degree arc is ideal for OA and others are good for RA.

Comments

One Comment
Rafiq
20 Aug, 2019

Excellent

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