The Benefits of a Comprehensive Cardiac Rehabilitation Program for Patients with Acute Coronary Syndrome: A Follow-Up Study

BACKGROUND AND OBJECTIVES

Secondary prevention after acute coronary syndrome (ACS) is essential to reduce cardiovascular mortality and hospital readmission, ensuring patients return to normal with an improved quality of life. Thus, we investigate the benefits of a comprehensive cardiac rehabilitation (CR) program on lifestyle, risk factors and adherence to guideline-directed medical therapy (GDMT) in patients after ACS and myocardial revascularization through coronary artery by-pass grafting (CABG) or percutaneous coronary intervention (PCI).

METHODS

This is a prospective, longitudinal study in consecutive post-CABG or PCI patients after ACS that participated or not in a comprehensive CR. Cardiovascular risk factors, quality of life and adherence to GDMT were analyzed in terms of assessing the benefit of 12 months of comprehensive CR on reaching guidelines secondary prevention targets.

RESULTS

At the inclusion in comprehensive CR of all patients (n = 480), 85% had hypertension; 86% had elevated total cholesterol values; 69% were characterized by metabolic syndrome; 43% were obese; 31% were active smokers and 29% had type 2 diabetes mellitus. Only 26.66% (n = 128) followed the entire program for 12 months. No statistically significant differences in the prescription of GDMT at hospital discharge after myocardial revascularization between the CR (+) group (n = 128) versus CR (-) group (n = 352) (p > 0.05) were observed. After 12 moths, a significant adherence to GDMT in the CR (+) group vs. CR (-) group was recorded, as follows: antiplatelet agents (100% versus 96%, p = 0.001), beta-blockers (99% versus 92%, p = 0.02), ACE inhibitors/ARAB (89% versus 79%, p = 0.04), lipid-lowering drugs (100% versus 89%, p = 0.001). In total, 82% of the CR (+) patients had a significantly higher adherence at GDMT (82% versus 64%, p = 0.001). At 12 moths, the CR (+) group was characterized by significantly lower values than at the inclusion but some values still increased: systolic blood pressure (139.25 + 19.20 mmHg (p < 0.03)), total cholesterol (171.07 + 48.59 mg/dL (p = 0.0001)) and LDL-cholesterol (102.83 + 41.30 mg/dL (p = 0.009)). At the same time, the analysis of psychosocial factors using the HAD questionnaire revealed a statistically significant improvement in anxiety and depression scores: HAD-A score (9.1 ± 3.7 at T0 vs. 7.1 ± 4.2 at T1, p = 0.001) and HAD-D score (7.7 ± 3.19 at T0 vs. 6.4 ± 4.3 at T1, p = 0.003). A multivariable analysis, following GDMT, showed the actual value or information and training of patients regarding optimal cardiovascular risk factor control was independently associated with lower values of systolic blood pressure (R2 = 0.48), diastolic (R2 = 0.38), serum glucose (R2 = 0.48), glycated hemoglobin (R2 = 0.50), total cholesterol (R2 = 0.31), LDL-cholesterol (R2 = 0.30), HDL-cholesterol (R2 = 0.19) and serum triglycerides (R2 = 0.20).

CONCLUSION

The twelve-month participation of post-ACS patients in comprehensive CR resulted in excellent post-revascularization management, as well as good adherence to guideline-directed medical therapy, provided further confirmation of the benefit of secondary prevention. Despite high adherence to drug treatments, targets for blood pressure, total cholesterol and LDL-cholesterol are inadequately achieved. Therefore, in the era of personalized medicine, patients with ACS should benefit from specific, comprehensive cardiovascular recovery programs that contain physiotherapists, psychologists, nutritionists and an experienced cardiologist in cardiovascular rehabilitation.

Prognostic implications of peripheral artery disease in coronary artery disease

Prevalence of peripheral arterial disease in patients with coronary artery disease is considerably higher than in the general population. A graded increase in the risk of major cardiovascular events in a variety of clinical settings is associated with the number of arterial beds affected by peripheral arterial disease. This is not surprising, considering that both coronary artery disease and peripheral arterial disease are linked to a higher prevalence of cardiovascular risk factors and a greater incidence of atherosclerotic burden. Aggressive lipid lowering therapy is associated with less coronary and peripheral arterial disease progression and greater regression. On the contrary, blood pressure therapy should be carefully managed, considering the association of both high and low values of pressure with adverse outcomes.

Risk Factors Associated with Acute Coronary Syndrome after Successful Percutaneous Coronary Intervention

Objective: Admission for acute coronary syndrome after successful percutaneous coronary intervention is a delicate situation for the patient and doctor. Predictors of these cases are poorly described.

Methods: We retrospectively analysed the files of post-percutaneous coronary intervention patients admitted to the Department of Cardiology of the Institute for Cardiovascular Disease and Heart Transplant in Tirgu Mures between January 2012 and December 2015. Analyses using the t-test, chi-square test, and Fisher test were performed to compare demographics, clinical and angiographic characteristics of patients with acute coronary syndrome, patients with stable angina, and those without symptoms.

Results: One hundred eighty post-percutaneous coronary intervention patients were readmitted; 46 patients (25.55%) were readmitted for acute coronary syndrome. Histories of arterial hypertension and renal dysfunction at hospital admission were associated with acute coronary syndrome. Bare metal stent in-stent restenosis and localisation of bare metal stent in-stent restenosis of the left descendent coronary artery were angiographic predictors of acute coronary syndrome.

Conclusion: Several clinical and angiographic factors identify patients at high risk for acute coronary syndrome after successful percutaneous coronary intervention. Recognition and treatment of these factors may prevent readmission for such a dangerous condition and may improve outcomes.

Invasive versus conservative strategy in acute coronary syndromes: The paradox in women's outcomes

BACKGROUND

We explored benefits and risks of an early invasive compared with a conservative strategy in women versus men after non-ST elevation acute coronary syndromes (NSTE-ACS) using the ISACS-TC database.

METHODS

From October 2010 to May 2014, 4145 patients were diagnosed as having a NSTE-ACS. We excluded 258 patients managed with coronary bypass surgery. Of the remaining 3887 patients, 1737 underwent PCI (26% women). The primary endpoint was the composite of 30-day mortality and severe left ventricular dysfunction defined as an ejection fraction <40% at discharge.

RESULTS

Women were older and more likely to exhibit more risk factors and Killip Class ≥2 at admission as compared with men. In patients who underwent PCI, peri-procedural myocardial injury was not different among sexes (3.1% vs. 3.2%). Women undergoing PCI experienced higher rates of the composite endpoint (8.9% vs. 4.9%, p=0.002) and 30-day mortality (4.4% vs. 2.0%, p=0.008) compared with men, whereas those who managed with only routine medical therapy (RMT) did not show any sex difference in outcomes. In multivariable analysis, female sex was associated with favorable outcomes (adjusted HR for the composite endpoint: 0.72, 95% CI: 0.58-0.91) in patients managed with RMT, but not in those undergoing PCI (adjusted HR: 0.96, 95% CI: 0.61-1.52).

CONCLUSIONS

We observed a more favorable outcome in women than men when patients were managed with RMT. Women and men undergoing PCI have similar outcomes. These data suggest caution in extrapolating the results from men to women in an overall population of patients in the context of different therapeutic strategies.

Optimizing prevention and guideline-concordant care in Montenegro

BACKGROUND

Guidelines recommend use of evidence-based medications in patients discharged after an acute coronary syndrome (ACS). Yet the current rates of adherence in many eastern European countries are unknown.

OBJECTIVE

To determine whether 6month outpatient follow-up after ACS is associated with recommended rates of medication adherence in Montenegro.

METHODS

A prospective analysis was conducted in 585 ACS patients confirmed to be alive after ACS at 6month follow-up. The study was undertaken between 2012 and 2015, from 9 International Survey of Acute Coronary Syndrome in Transitional Countries (ISACS-TC) hospitals in the Montenegro. The primary outcome was guideline-concordant care, defined as 100% compliance with 5 medications: aspirin, clopidogrel, beta-blockers, and statins in ACS patients, and angiotensin-converting enzyme inhibitors or angiotensin receptor blockers [ACEI/ARB] for the subset of patients with left ventricular systolic dysfunction, as assessed by an ejection fraction less than 40% at discharge. In addition to the composite end point, the achievement of each single treatment measure was analyzed. Multivariate predictors of long-term medication adherence were also identified.

RESULTS

Guideline-concordant care (GCC) at discharge increased from 2012 to 2015 (adjusted OR for increase 1.51; CI 0.88-2.52). GCC over 6months was adhered in 73% of patients. In patients who did not achieve GCC, adherence was persistently high with 92.3% for aspirin, 91.3% for statins and 72% for ACE-inhibitors or angiotensin-receptor blockers (ARBs). Adherence was lower for clopidogrel (57.7%) and beta-blockers (64.4%). After adjusting for demographic and clinical differences, in-hospital referral to PCI and ST segment elevation myocardial infarction (STEMI) were associated with greater medication adherence at 6month follow-up.

CONCLUSIONS

In Montenegro, long-term adherence to evidence-based medication after ACS is high. Adherence to guideline-recommended therapies increased over time with participation to the ISACS-TC. The lower achievement of GCC in patients treated medically and in those with non-ST-segment elevation ACS needs particular attention.

Association between comorbidities and absence of chest pain in acute coronary syndrome with in-hospital outcome

BACKGROUND

To evaluate the impact of comorbidities on the management and outcomes of acute coronary syndrome (ACS) patients without chest pain/discomfort (i.e. ACS without typical presentation).

METHODS

Of the 11,458 ACS patients, enrolled by the International Survey of Acute Coronary Syndrome in Transitional Countries (ISACS-TC; ClinicalTrials.gov: NCT01218776), 8.7% did not have typical presentation at the initial evaluation, and 40.2% had comorbidities. The odds of atypical presentation increased proportionally with the number of comorbidities (odds ratio [OR]: 1, no-comorbid; OR: 1.64, 1 comorbidity; OR: 2.52, 2 comorbidities; OR: 4.57, ≥3 comorbidities).

RESULTS

Stratifying the study population by the presence/absence of comorbidities and typical presentation, we found a decreasing trend for use of medications and percutaneous intervention (OR: 1, typical presentation and no-comorbidities; OR: 0.70, typical presentation and comorbidities; OR: 0.23, atypical presentation and no-comorbidities; OR: 0.18, atypical presentation and comorbidities). On the opposite, compared with patients with typical presentation and no-comorbidities (OR: 1, referent), there was an increasing trend (p<0.001) in the risk of death (OR: 2.00, OR: 2.52 and OR: 4.83) in the above subgroups. However, after adjusting for comorbidities, medications and invasive procedures, atypical presentation was not a predictor of in-hospital death. Independent predictors of poor outcome were history of stroke (OR: 2.04), chronic kidney disease (OR: 1.57), diabetes mellitus (OR: 1.49) and underuse of invasive procedures.

CONCLUSIONS

In the ISACS-TC, atypical ACS presentation was often associated with comorbidities. Atypical presentation and comorbidities influenced underuse of in-hospital treatments. The latter and comorbidities are related with poor in-hospital outcome, but not atypical presentation, per se.

Impact of Admission Systolic Blood Pressure and Antecedent Hypertension on Short-Term Outcomes After ST-Segment Elevation Myocardial Infarction: Strobe-Compliant Article

We evaluated the combined effect of admission systolic blood pressure (SBP) and antecedent hypertension on short-term outcomes in patients with ST-segment elevation myocardial infarction (STEMI). Data were derived from a multicenter survey of 7303 consecutive patients with STEMI. Patients were divided into 4 groups according to different blood pressure status: high SBP without hypertension, high SBP with hypertension, low SBP without hypertension, and low SBP with hypertension. The primary endpoints were 7 and 30-day all-cause mortality. The prevalence of hypertension was 40.7%, and the best cutoff of admission SBP for predicting 30-day mortality was 108 mmHg by receiver-operating characteristic curve. Patients with hypertension were older, more often female, also had longer onset-to-admission time, more comorbidities, and higher Killip class. Patients with both low SBP (≤108 mmHg) and hypertension group had significantly higher 7 and 30-day mortality than those in other groups (all P < 0.001). After multivariate adjustment, low SBP with hypertension group was still an independent risk factor for predicting 7-day mortality (hazard ratios [HR] 1.86, 95% confidence interval [CI] 1.41-2.46; P < 0.001) and 30-day mortality (HR 1.88, 95% CI 1.46-2.43; P < 0.001). In patients with SBP > 108 mmHg, a history of hypertension could increase the risk of 30-day mortality by 27% (HR 1.00 vs 1.27, P = 0.012), while in patients with SBP ≤ 108 mmHg, this increased risk reached to 37% (HR 1.51 vs 1.88, P < 0.001). In conclusion, low admission SBP was the relatively dominant contributor for predicting 7 and 30-day all-cause mortality, and a concurrent antecedent hypertension increased the corresponding risk of mortality.