Single vs. multiple operators for chronic total occlusion percutaneous coronary interventions: From the PROGRESS-CTO Registry

BACKGROUND

There is limited data on the impact of a second attending operator on chronic total occlusion (CTO) percutaneous coronary intervention (PCI) outcomes.

METHODS

We analyzed the association between multiple operators (MOs) (>1 attending operator) and procedural outcomes of 9296 CTO PCIs performed between 2012 and 2021 at 37 centers.

RESULTS

CTO PCI was performed by a single operator (SO) in 85% of the cases and by MOs in 15%. Mean patient age was 64.4 ± 10 years and 81% were men. SO cases were more complex with higher Japan-CTO (2.38 ± 1.29 vs. 2.28 ± 1.20, p = 0.005) and Prospective Global Registry for the Study of Chronic Total Occlusion Intervention scores (1.13 ± 1.01 vs. 0.97 ± 0.93, p < 0.001) compared with MO cases. Procedural time (131 [87, 181] vs. 112 [72, 167] min, p < 0.001), fluoroscopy time (49 [31, 76] vs. 42 [25, 68] min, p < 0.001), air kerma radiation dose (2.32 vs. 2.10, p < 0.001), and contrast volume (230 vs. 210, p < 0.001) were higher in MO cases. Cases performed by MOs and SO had similar technical (86% vs. 86%, p = 0.9) and procedural success rates (84% vs. 85%, p = 0.7), as well as major adverse complication event rates (MACE 2.17% vs. 2.42%, p = 0.6). On multivariable analyses, MOs were not associated with higher technical success or lower MACE rates.

CONCLUSION

In a contemporary, multicenter registry, 15% of CTO PCI cases were performed by multiple operators. Despite being more complex, SO cases had lower procedural and fluoroscopy times, and similar technical and procedural success and risk of complications compared with MO cases.

Percutaneous Coronary Intervention of Chronic Total Occlusions Involving a Bifurcation: Insights from the PROGRESS-CTO Registry

BACKGROUND

The impact of bifurcations at the proximal or distal cap on the outcomes of chronic total occlusion (CTO) percutaneous coronary intervention (PCI) has received limited study.

METHODS

We analyzed the clinical, angiographic, and procedural data of 4,584 cases performed in patients between 2012-2020 in a global CTO PCI registry. We compared 4 groups according to bifurcation location "proximal cap", "distal cap", "proximal and distal cap", and "no bifurcation".

RESULTS

The CTO involved a bifurcation in 67% cases, as follows: proximal cap (n=1451, 33%), distal cap (n=622, 14%), or both caps (n=954, 21%). "Proximal and distal cap" cases had higher J-CTO compared with "proximal cap", "distal cap" and "no bifurcation" cases, (2.9 ± 1.1 vs 2.5 ± 1.1 vs 2.4 ± 1.2 vs 2 ± 1.2, P<0.0001), and they were also associated with lower technical success rate (79% vs 85% vs 85% vs 90%, p<0.0001), higher pericardiocentesis rate (1% vs 1% vs 0.2% vs 0.3%, P=0.02) and higher emergency coronary artery bypass surgery rate (0.3 % vs 0% vs 0% vs 0%, P=0.01).

CONCLUSION

More than two thirds of CTO PCIs involve a bifurcation, which is associated with lower technical success and higher risk for complications.

Procedural and In-Hospital Outcomes of Chronic Total Occlusion Percutaneous Coronary Interventions in Patients With Acute Myocardial Infarction: Insights From a Prospective Multicenter International Registry

BACKGROUND

We sought to examine the procedural and clinical outcomes of patients who underwent chronic total occlusion (CTO) percutaneous coronary intervention (PCI) in the setting of acute myocardial infarction (AMI).

METHODS

We assessed the clinical and procedural characteristics, technical success, procedural success, and in-hospital outcomes of 2314 patients who underwent CTO-PCI at 20 experienced centers between 2012 and 2017, classified according to whether or not they presented with AMI.

RESULTS

Mean patient age was 65 ± 10 years, 85% were men, and 154 (6.7%) presented with AMI (5.5% with non-ST segment elevation myocardial infarction, 1.1% with ST-segment elevation myocardial infarction). Compared with non-AMI patients who underwent CTO-PCI, AMI patients had higher prevalence of diabetes (56% vs 42%; P<.01) and lower median left ventricular ejection fraction (48% vs 54%; P<.001). The CTO angiographic characteristics were similar between the 2 groups. Compared with non-AMI patients undergoing CTO-PCI, AMI patients had more frequent use of antegrade wire escalation (86.0% vs 78.9%; P=.03) and more frequent use of hemodynamic support devices (16.2% vs 3.4%; P<.01), and were more likely to have a non-CTO lesion treated (34.0% vs 26.6%; P=.03). AMI and non-AMI patients had similar technical success (90% vs 87%; P=.26), procedural success (88% vs 85%; P=.38), and incidence of in-hospital MACE (2.6% vs 2.5%; P=.94).

CONCLUSION

CTO-PCI is performed infrequently in AMI patients and is associated with similar technical and procedural success rates and in-hospital major adverse cardiovascular event rates when compared with CTO-PCI performed in non-AMI patients.