Impact of anemia on long-term ischemic events and bleeding events in patients undergoing percutaneous coronary intervention: a system review and meta-analysis

Impact of Prior Stroke on Long-Term Outcomes in Patients With Acute Coronary Syndrome

Background: Cerebrovascular disease often coexists with coronary artery disease (CAD), and it has been associated with worse clinical outcomes in CAD patients. However, the prognostic effect of prior stroke on long-term outcomes in patients with acute coronary syndrome (ACS) is still unclear.

Methods and Results: An observational cohort study of ACS patients who underwent emergency percutaneous coronary intervention (PCI) between January 1999 and May 2015 was conducted. Patients were divided into 2 groups according to their history of stroke. We evaluated both all-cause death and cardiac death. Of the 2,548 consecutive ACS patients in the current cohort, 268 (10.5%) had a history of stroke at the onset of ACS. Patients with a history of stroke were older and had a higher prevalence of comorbidities such as hypertension or renal deficiency. The cumulative incidences of all-cause death and cardiac death were significantly higher in patients with a history of stroke (both log-rank P<0.0001). Multivariate Cox hazard regression analysis showed that a history of stroke was significantly associated with the incidences of all-cause death (hazard ratio [HR] 1.49, 95% confidence interval [CI] 1.20–1.85, P=0.0004) and cardiac death (HR 1.41, 95% CI 1.03–1.93, P=0.03).

Conclusions: About 10% of the ACS patients had a history of stroke and had worse clinical outcomes.

The prognostic implications of chronic kidney disease and anemia on long-term outcomes in patients undergoing percutaneous coronary intervention

Chronic kidney disease (CKD) and anemia are each individually associated with worse clinical outcomes in patients with coronary artery disease (CAD). However, the prognostic impact of both CKD and anemia on clinical outcomes, when they coexist, remains unclear in CAD patients after percutaneous coronary intervention (PCI). We studied 2484 CAD patients who underwent their first PCI and had available date on preprocedural hemoglobin between 2000 and 2016. The patients were divided into four groups according to the presence of CKD and/or anemia. We evaluated the incidences of all-cause death and major adverse cardiac and cerebrovascular events (MACCEs), including cardiovascular death, non-fatal myocardial infarction, and stroke. Among the patients, 310 patients (12.5%) had both CKD and anemia (CKD with anemia group), 309 (12.4%) had CKD only, 461(18.6%) had anemia only, and 1404 (56.5%) had neither CKD nor anemia. Patients in the CKD with anemia group were older and had a higher incidence of hypertension and diabetes mellitus. During a median follow-up period of 3.7 years, Kaplan-Meier curves showed that patients in the CKD with anemia group had significantly higher incidences of MACCE and all-cause death than the CKD only and anemia only group (both log-rank p < 0.001). Using patients with the no CKD or anemia group as a reference, the adjusted hazard ratios (HRs), 95% confidence interval for MACCE were 1.51 (0.92-2.47) for the CKD only, 1.48 (0.94-2.32) for the anemia only and 2.00 (1.18-3.38) for the CKD with anemia group. Moreover, the adjusted HR for all-cause death were 1.42 (0.96-2.10) for the CKD only, 1.79 (1.28-2.51) for the anemia only, and 1.92 (1.30-2.84) for the CKD with anemia group. In conclusion, the combined effects of both CKD and anemia on outcomes after PCI were worse than either of their individual effects.

In-Hospital Mortality Risk in Post-Percutaneous Coronary Interventions Cancer Patients: A Nationwide Analysis of 1.1 Million Heart Disease Patients

Objectives The primary goal of this inpatient study is to assess the risk of in-hospital mortality due to cancer and chronic comorbidities in post-percutaneous coronary intervention (PCI) patients. Methods We conducted a retrospective cross-sectional study, including 1,131,415 adult patients (age +18 years) by using the Nationwide Inpatient Sample (NIS) from 2012 to 2014. These patients underwent PCI, and they were further sub-grouped by the co-diagnosis of cancer. Logistic regression analysis was used to evaluate the risk of association between comorbid cancer and in-hospital mortality in post-PCI inpatients. Results Most PCI inpatients with cancer were older adults (mean age 70.6 years), males (71.8%), and white (80.6%). Post-PCI mortality risk was 1.28 times higher in females (95% CI 1.235 - 1.335) as compared to males. Coagulopathy and anemias significantly increased the risk of post-PCI mortality by three times (95% CI 2.837 - 3.250) and 1.6 times (95% CI 1.534 - 1.692), respectively. Comorbid cancer was associated with an increased risk of in-hospital mortality in post-PCI patients by 1.9 times (95% CI 1.686 - 2.086) after controlling for demographic confounders and chronic comorbidities. Conclusion Our analysis showed that cancer is an independent risk factor for in-hospital mortality after PCI. This association calls for an integrated care model in the management of a complex patient population with cancer and other comorbidities requiring more vigilance and aggressive management.

α-Hydroxybutyrate dehydrogenase is associated with atherothrombotic events following infrainguinal angioplasty and stenting

Besides clinical characteristics, easy-accessible laboratory markers could be of value to refine risk stratification in peripheral artery disease. In the current study, we investigated whether α-hydroxybutyrate dehydrogenase (HBDH) is associated with atherothrombotic events in 83 stable patients undergoing infrainguinal angioplasty and stenting. The primary endpoint was defined as the composite of the first occurrence of nonfatal myocardial infarction, nonfatal stroke or transient ischemic attack and cardiovascular death within 2 years after angioplasty and stenting, and occurred in 6 patients (7.2%). HBDH levels at baseline were significantly higher in patients who subsequently developed the primary endpoint (126 U/L [116–137 U/L] vs. 105 U/L [95–120 U/L]; p = 0.04). ROC curve analysis revealed that HBDH could distinguish between patients without and with future atherothrombotic events. A HBDH concentration ≥ 115 U/L was identified as the best threshold to predict the composite endpoint, providing a sensitivity of 83.3% and a specificity of 71.4%, and was therefore defined as high HBDH. High HBDH was seen in 28 patients (33.7%). Ischemic events occurred significantly more often in patients with high HBDH than in patients with lower HBDH levels (5 vs. 1 patients, p = 0.007). In conclusion, HBDH is associated with the occurrence of atherothrombotic events after infrainguinal angioplasty with stent implantation. Future trials are warranted to study the predictive role of HBDH for ischemic outcomes and to investigate underlying mechanisms.

Association between admission anemia and long-term mortality in patients with acute myocardial infarction: results from the MONICA/KORA myocardial infarction registry

BACKGROUND

Previous studies have shown that the presence of anemia is associated with increased short- and long-term outcomes in patients with acute myocardial infarction (AMI). This study aims at examining the impact of admission anemia on long-term, all-cause mortality following AMI in patients recruited from a population-based registry. Contrary to most prior studies, we distinguished between patients with mild and moderate to severe anemia.

METHODS

This prospective study was conducted in 2011 patients consecutively hospitalized for AMI that occurred between January 2005 and December 2008. Patients who survived more than 28 days after AMI were followed up until December 2011. Hemoglobin (Hb) concentration was measured at hospital admission and classified according to the World Health Organization (WHO). Mild anemia was defined as Hb concentration of 11 to < 12 g/dL in women and 11 to < 13 g/dL in men; moderate to severe anemia as Hb concentration of < 11 g/dL. Adjusted Cox regression models were calculated to compare survival in patients with and without anemia.

RESULTS

Mild anemia and moderate to severe anemia was found in 183 (9.1%) and 100 (5%) patients, respectively. All-cause mortality after a median follow-up time of 4.2 years was 11.9%. The Cox regression analysis showed significantly increased mortality risks in both patients with mild (HR 1.74, 95% CI 1.23-2.45) and moderate to severe anemia (HR 2.05, 95% CI 1.37-3.05) compared to patients without anemia.

CONCLUSION

This study shows that anemia adversely affects long-term survival following AMI. However, further studies are needed to confirm that anemia can solely explain worse long-term outcomes after AMI.

New scoring model (DARSYM score) to predict post-discharge bleeding after successful second-generation drug-eluting stent implantation

We aimed to create a scoring model to predict post-discharge bleeding (PDB) after drug-eluting stent (DES) implantation in Japanese subjects. We enrolled 1912 consecutive patients undergoing DES implantation (age 70 ± 10 years; 72% male). PDB was defined as a composite of type 5, 3, and 2 bleeding using the Bleeding Academic Research Consortium criteria. A Cox proportional hazard model assessed predictors, and we then derived a clinical model stratifying risk of PDB after DES implantation. Ninety-eight patients (6.7%) experienced PDB; gastrointestinal bleeding (GIB) was most common (n = 66, 67%), followed by intracranial bleeding (n = 24, 25%). PDB was independently associated with age >80 years [risk ratio (RR): 1.89, p < 0.001], hypertension (RR: 1.68, p = 0.03), severe renal dysfunction (RR: 1.56, p = 0.04), anemia on admission (RR: 1.75, p = 0.02), prior history of GIB (RR: 3.49, p < 0.001), NSAIDs use (RR: 2.33, p = 0.03), and introduction of triple antithrombotic therapy (RR: 2.94, p < 0.001). A clinical prediction rule for risk of bleeding events including seven baseline factors was derived. A better predictive ability for PDB was found using this new scoring system than the HAS-BLED score [c statistics, 0.85 (95% CI 0.83-0.87) and c statistics, 0.71 (95% CI 0.69-0.73), respectively; p < 0.001]. This new scoring system including patient characteristics and laboratory variables can identify patients at high risk of PDB after DES implantation.