Should Percutaneous Coronary Intervention be the Standard Treatment Strategy for Significant Coronary Artery Disease in all Octogenarians?

Prognostic value of ΔSYNTAX% score in octogenarians undergoing percutaneous coronary intervention

OBJECTIVES

To verify whether incomplete revascularisation (IR), quantified using the rSYNTAX (Synergy between Percutaneous Coronary Intervention with Taxus and Cardiac Surgery) score and ΔSYNTAX% score, could predict short- (in-hospital mortality) and long-term outcomes (12-month mortality) in octogenarians undergoing percutaneous coronary intervention (PCI).

METHODS & RESULTS

A retrospective analysis of 665 consecutive octogenarian patients presenting for PCI to a UK centre was performed. The baseline SYNTAX and rSYNTAX scores were assessed from angiographic images. ΔSYNTAX% score was calculated (ΔSYNTAX% = ((SYNTAX - rSYNTAX)/SYNTAX) × 100%)) to measure the relative completeness of revascularisation. Kaplan-Meier analysis assessed survival at 12 months by tertiles of rSYNTAX and ΔSYNTAX% scores. Increasing ΔSYNTAX% score was associated with reduced in-hospital mortality (P = 0.017), and improved survival benefit (log rank 14.8, P = 0.001) at 12 months.

CONCLUSIONS

Enhancing the completeness of revascularisation in octogenarians selected to undergo PCI is associated with a lower in-hospital mortality and a survival benefit at 12 months.

Percutaneous coronary intervention in octogenarians: 10-year experience from a primary percutaneous coronary intervention centre with off-site cardiothoracic support

OBJECTIVE

To examine the trends in patient characteristics and clinical outcomes over a ten-year period and to analyse the predictors of mortality in octogenarians undergoing percutaneous coronary intervention (PCI) in our centre.

METHODS

A total of 782 consecutive octogenarians (aged 80 and above) were identified from a prospectively collected PCI database within our non-surgical, medium volume centre between 1st January 2007 and 31st December 2016. This represented 10.9% of all PCI procedures performed in our centre during this period. We evaluated the demographic and procedural characteristics of the cohort with respect to clinical outcomes (all-cause in-hospital and 1-year mortality, in-hospital complication rates, duration of hospital admission, coronary disease angiographic complexity and major co-morbidities). The cohort was further stratified into three chronological tertiles (January 2007 to July 2012, 261 cases; August 2012 to May 2015, 261 cases; June 2015 to December 2016, 260 cases) to assess for differences over time. Predictors of mortality were identified through a multivariate regression analysis.

RESULTS

The number of octogenarians undergoing PCI increased nearly ten-fold over the studied period. Despite this, there were no significant differences in clinical outcomes or patient characteristics, except for the increased use of trans-radial vascular access [11.9% in first tertile vs. 73.2% in third tertile (P < 0.0001)]. The all-cause in-hospital (5.8% vs. 4.6% vs. 3.8%, P = 0.578) and 1-year mortality (12.4% vs. 12.5% vs. 14.4%, P = 0.746) remained constant in all three tertiles respectively. Six independent predictors of mortality were identified - increasing age [HR = 1.12 (1.03−1.22), P = 0.008], cardiogenic shock [HR = 16.40 (4.04–66.65), P < 0.0001], severe left ventricular impairment [HR = 3.52 (1.69−7.33), P = 0.001], peripheral vascular disease [HR = 2.73 (1.22−6.13), P = 0.015], diabetes [HR = 2.59 (1.30−5.17), P = 0.007] and low creatinine clearance [HR = 0.98 (0.96−1.00), P = 0.031].

CONCLUSION

This contemporary observational study provides a useful insight into the real-world practice of PCI in octogenarians.