Retrospective Comparative Study of the Short and Long Term Outcomes of Percutaneous Coronary Intervention and Coronary Artery Bypass Graft in Chronic Kidney Disease Population
Author(s): Nishanthi WAAGN, Herath Chula, Manjika Sithum
Introduction: Patients with chronic kidney disease are at increased risk of cardiovascular disease and death. For patients with Chronic Kidney Disease (CKD) and multivessel Coronary Artery Disease (CAD), the optimal revascularization study is still debatable. This is a single center retrospective study to compare the short- and long-term outcomes of Percutaneous Coronary Intervention (PCI) and Coronary Artery Bypass Graft (CABG) in CKD patients who presented with acute coronary syndrome. in Sri Lanka.
Objectives: This study was aimed to describe the sociodemographic distribution of the population with CKD and acute coronary syndrome, to compare the baseline characteristics with outcomes include recurrence of ACS and LV(left ventricular dysfunction) and to compare the short and long term outcomes of PCI and CABG in CKD population.
Methodology: A retrospective comparative study was conducted at Sri Jayewardenepura General Hospital on patients with CKD who underwent CABG and PCI since 2013 to 2017. Data were obtained from past medical records, clinic records and telephone interviews. The outcomes of the patients with CKD who underwent PCI were matched to patients who underwent CABG for multivessel disease by using univariate and multivariate statistical analysis methods. The outcomes include deaths, recurrence of acute coronary syndrome, left ventricular LV dysfunction, bleeding complications and stroke.
Results: There were 423 patients met inclusion criteria with mean age 59.94 ± 8.381 years. There were 81.3%(n=344) of males. The prevalence of Diabetes, hypertension, dyslipidemia in the study sample was 89.2%(n=363),83.3%(n=339), and 34.9%(n=142) respectively. The prevalence of CKD stage I, II ,111,1V and V was 1.4%(n=6) ,38% (n=165), 36.9% (n=156),12.5% (n=54),11.3%(n=48) respectively. The recurrence of ACS in PCI group was 14.3%(n=34),in 1 month 23.6%(n=56) in 1 year and 12.7%(n=30) in 3 years, compared to CABG group 7.5%(n=14) in 1 month,7%(n=13) in 1 year,0% in 3 years (X2=4.817,p<0.05, X2=21.136,P<0.01,P<0.05 ). There was a statistically significant reduction in recurrences of ACS in CABG group compared to PCI group in CKD population. The incidence of LV dysfunction in the PCI group was 24%(n=18) in 1 month ,50.7%(n=38) in 1 year and 29.3%(n=22) in 3 years compared to CABG group 80%(n=12)in 1 month ,20%(n=3)in 1 year and 0%, 3 years (p<0.05 using fishers exact test). There was a significant reduced occurrence of LV dysfunction in CABG group compared to PCI group in 1 year and 3 years.
Conclusion: Most of the CKD population with acute coronary syndrome were males with less than 60 years age. Also, most of them had associated risk factors include hypertension, diabetes mellitus and dyslipidemia. The CKD population had presented with acute coronary syndrome at relative younger age might be due to associated risk factors. There was no difference in mortality rate between CABG vs PCI in CKD population. However, there was a significant reduction in recurrence of acute coronary syndrome, LV dysfunction, bleeding complications and stroke in CABG group than PCI group in CKD population. There was no significant association of end up in dialysis following PCI or CABG. Therefore, further multicenter longer term follows up studies are needed to investigate the optimum treatment option for CKD population with acute coronary syndrome.