Survival after coronary revascularization in the elderly

Cardiac surgery in the elderly patient

BACKGROUND

As life expectancies rise and the number of persons over age 75 in the population increases, the proper treatment of elderly cardiac patients is becoming a matter of ever greater medical and political importance.

METHODS

In collaboration with the German Federal Quality Assurance Office (Bundesgeschäftsstelle Qualitätssicherung, BQS), the authors analyzed the risk profiles of elderly patients by means of data sets from all cardiac surgical centers in Germany for the year 2007. The results regarding risk distribution and the morbidity and lethality statistics for isolated coronary surgery were derived from the complete, nationwide BQS data pool, containing information on a total of 47,881 operations. Data on quality of life and long-term survival were obtained from a selective literature search using Medline.

RESULTS

Compared to patients under age 65, those over age 75 have significantly more prognosis-determining comorbidities and risk factors. Accordingly, complication rates and lethality are higher in the latter age group (for example, there is a 4.3-fold relative risk elevation for renal dysfunction, a 3.0-fold elevation for neurological complications, and 3.7-fold elevation for in-hospital lethality). The patient's chronological age is a risk factor for lethality and morbidity after coronary surgical procedures.

CONCLUSIONS

The lethality risk of a bypass operation can be predicted very accurately with the aid of modern scoring systems. Successful cardiac surgical procedures can return the patient to a normal life expectancy and quality of life for his or her age group.

Bleeding, blood transfusion, and increased mortality after percutaneous coronary intervention: implications for contemporary practice

Advances in percutaneous coronary intervention (PCI) during the past decade have led to more widespread use of these procedures in older and sicker patients. Refinement of periprocedural antithrombotic therapy has played a particularly important role in reducing ischemic complications to very low levels in routine practice. Although the use of more powerful antiplatelet agents has been associated with increased risk of bleeding (especially among the elderly and patients with serious comorbidities), such complications have traditionally been viewed as benign in nature. Recent studies, however, have identified major bleeding after PCI as an important predictor of increased mortality. Whether this relationship between bleeding and risk of death is cause-and-effect, or merely an association based on shared risk factors, remains unclear. In this review, we examine the basis for a possible causal link between post-PCI bleeding and subsequent mortality. Possible mechanisms underpinning such a link are discussed, including a potential adverse role for blood transfusion in this setting. A framework for further clinical evaluation of this issue is presented.

Long-Term Paclitaxel-Eluting Stent Outcomes in Elderly Patients

Background— Although drug-eluting stents have become a mainstay of percutaneous coronary intervention, information about drug-eluting stents outcomes in elderly patients is limited. Data from the paclitaxel-eluting stent (PES) trials and registries were pooled to assess PES benefits relative to advancing patient age, including comparison with bare-metal stents.

Methods and Results— Data from 5 randomized trials (2271 patients with PES, 1397 patients with bare-metal stents) and from 2 postmarket registries (7492 patients with PES) were pooled separately. Each dataset was stratified into age groups: <60, 60 to 70, and >70 years. At baseline, patients aged >70 years in both datasets had significantly more adverse characteristics than younger patients. Through 5 years, trial data showed that patients aged >70 years had higher death rates, but comparable rates of myocardial infarction, stent thrombosis, and target lesion revascularization with younger patients. Compared with patients with bare-metal stents, patients with PES aged >70 years had comparable rates of death, myocardial infarction, and stent thrombosis but a significantly lower target lesion revascularization rate (22.2 versus 10.2, P <0.001). These findings were echoed in the registry data through 2 years that showed that PES patients aged >70 years had significantly higher death rates, but lower myocardial infarction, stent thrombosis, and target lesion revascularization rates, compared with younger patients. Although the mortality rates of patients aged >70 years were higher than those of younger patients, they were comparable with those of age- and gender-matched norms in the general population.

Conclusions— This analysis of almost 10 000 patients demonstrated that percutaneous coronary intervention with PES is a safe and an effective treatment option that should not be withheld based on age.

Different treatment options in chronic coronary artery disease: when is it the time for medical treatment, percutaneous coronary intervention or aortocoronary bypass surgery?

BACKGROUND

3% to 4% of the population suffers from chronic coronary artery disease (CAD). Primary care physicians, internists, cardiologists, and cardiac surgeons are involved in their long-term care. This article presents a complementary care pathway that integrates two apparently competing treatment options, aortocoronary bypass surgery (ACB) and percutaneous coronary intervention (PCI). Together with lifestyle changes and medical therapy, these treatments reduce morbidity and mortality and improve quality of life.

METHODS

This article was written by cardiac surgeons and cardiologists on the basis of the current treatment guidelines for coronary artery disease, a selective review of the literature (randomized, controlled trials and registry data), and a process of interdisciplinary consensus building.

RESULTS AND CONCLUSIONS

Lifestyle changes can reduce cardiovascular risk factors, improve quality of life, and lower cardiovascular morbidity and mortality. They provide additional benefit over and above medical therapy and/or revascularization procedures and should be strongly recommended to all patients. Revascularization is not indicated for patients who are asymptomatic on medical therapy or who have only a small area of myocardial ischemia. With either PCI or ACB, the symptoms of angina pectoris can be markedly improved, or even eliminated. Both of these revascularization procedures should be accompanied by optimized medical treatment. Revascularization is indicated when the area of myocardial ischemia is large, whether or not symptomatic angina is present. ACB is the treatment of choice for 3-vessel disease and/or left main stenosis. For all other constellations of coronary findings, ACB and PCI are equally good therapeutic options. The treating physician should take the patient's expectations into account and present the short- and long-term benefits and drawbacks of each proposed treatment to the patient so that an informed decision can be made.

Predictors of health care needs in discharged patients who have undergone coronary artery bypass graft surgery

OBJECTIVE

The study objective was to explore the health care needs of patients who have undergone coronary artery bypass graft (CABG) and identify the influential factors related to those needs. CABG is a current medical treatment for patients with ischemic heart disease. Discharged patients who have undergone CABG often have physical and psychosocial discomfort that can be intolerable. Understanding and meeting the health care needs of patients who have undergone CABG will facilitate their recovery.

METHODS

Descriptive correlational research was performed. The participants were patients who underwent CABG and were discharged within the first month. A total of 103 subjects were recruited by purposive sampling from 1 medical center in the Taipei area of Taiwan. The structured questionnaires of the Symptom Distress Inventory and Health Care Needs Inventory of patients who underwent CABG were used for data collection. Data were analyzed by descriptive statistics, t test, 1-way analysis of variance, Pearson's correlation, and multiple regressions.

RESULTS

The frequent order of health care needs were physical, informational, and psychosocial. The stepwise multiple regressions showed that the most important predictors for overall health care needs were length of hospital stay after surgery, symptom distress, and gender.

CONCLUSION

Clinical nursing care should focus on patients who have longer postsurgery hospitalization, patients with more severe symptom distress, and female patients after discharge. The results of this study will provide a reference for developing nursing interventions for patients who are discharged after CABG. The optimal goal is to enhance the quality care of these patients.

[Coronary angioplasty in octogenarians]

Coronary angioplasty is the most frequent method used for coronary revascularisation. Recommendations about its application are well-established. The elderly are a growing population with a high prevalence of ischaemic heart disease, especially with unstable presentation. Despite the worse prognostic reliable to these patients, aggressive treatments are often lacking, particularly the achievement of percutaneous coronary interventions. Most of the time excluded from the largest clinical trials, subject to more complications, bleeding and renal failure for example, the recommendations seem more difficult to implement. The authors propose an update about angioplasty over 80 years. The results of many important registries suggest that octogenarians are potential good candidates for angioplasty, without underestimating the complications inherent with the procedure. However, the selection of patients, improved materials, the choice of the route approach and the development of new molecules can significantly reduce this morbidity. In addition, largest inclusion of elderly in clinical trials and specific studies should allow for more focused recommendations.

Abciximab in elderly with acute coronary syndrome invasively treated: effect on outcome

Older age is an independent predictor of mortality after percutaneous coronary intervention (PCI) in patients with Non-ST elevation Acute Coronary Syndrome (ACS). GPIIb/IIIa inhibitors are proved to improve outcome in high risk patients, but conflicting data are available about the effects of these inhibitors in elderly. Accordingly, we studied a consecutive population of elderly patients undergoing PCI for Non-ST elevation ACS. A total of 500 patients were divided in: GPI group (247 pts; mean age 77+/-1.9 years) treated by stenting plus abciximab and, no GPI group (253 pts; mean age 77+/-2.4 years) treated by stenting alone. Propensity analysis was used to account for the nonrandomized use of GPIIb/IIIa inhibitors. During hospitalization, incidence of death was similar among groups (3.2% vs 4.6%) without difference regarding incidence of major (1.6% vs 1.1%) and minor bleedings (4% vs 3%). At long-term follow-up the rate of death was significantly lower in GPI group (4.5% vs 12.3%; p=0.002) as well as the rate of acute myocardial infarction (2.8% vs 11.1%; p=0.0001), and pre-PCI (5.7% vs 13.4%; p=0.003). Cox regression analysis identified abciximab use as an independent predictor of lower long-term major adverse cardiac event (MACE) after adjustment for propensity score (Exp (B) 0.620, 95%CI 0.394-0.976, p=0.039). Our results suggest that addition of abciximab to stenting improves outcome in elderly patients with Non-ST elevation ACS, leading to an absolute benefit for reduction of death and MACE, with an acceptable rate of major and minor bleedings.

Long-Term Outcomes of Coronary-Artery Bypass Graft Surgery Versus Percutaneous Coronary Intervention for Multivessel Coronary Artery Disease in the Bare-Metal Stent Era

Background— Observational registries comparing coronary artery bypass graft (CABG) surgery and percutaneous coronary intervention (PCI) have reported long-term survival results that are discordant with those of randomized trials.

Methods and Results— We conducted a multicenter study in Japan enrolling consecutive patients undergoing first CABG or PCI between January 2000 and December 2002. Among 9877 patients enrolled, 5420 (PCI: 3712, CABG: 1708) had multivessel disease without left main involvement. Because age is an important determinant when choosing revascularization strategies, survival analysis was stratified by either age ≥75 or <75 years. Analyses were also performed in other relevant subgroups. Median follow-up interval was 1284 days with 95% follow-up rate at 2 years. At 3 years, unadjusted survival rates were 91.7% and 89.6% in the CABG and PCI groups, respectively (log rank P =0.26). After adjustment for baseline characteristics, survival outcome tended to be better after CABG (hazard ratio for death after PCI versus CABG [HR], 95% confidence interval [CI]: 1.23 [0.99-1.53], P =0.06). Adjusted survival outcomes also tended to be better for CABG among elderly patients (HR [95%CI]: 1.37 [0.98-1.92] P =0.07), but not among nonelderly patients (HR [95% CI]: 1.09 [0.82-1.46], P =0.55). Unadjusted and adjusted survival outcome for CABG and PCI were not significantly different in any subgroups when elderly patients were excluded from analysis.

Conclusions— In the CREDO-Kyoto registry, survival outcomes among patients <75 years of age were similar after PCI and CABG, a result that is consistent with those of randomized trials.

Intraoperative behavior of arterial grafts in the elderly and the young: a flowmetric systematic analysis

Extensive arterial grafting (Art-CABG) in the elderly is still questioned due to the reduced life expectancy and the supposed higher periprocedural risk. Reports further demonstrated accelerated atherosclerosis of arterial grafts in the elderly, with hampered short-term and long-term results. We reviewed our experience of patients undergoing Art-CABG between January 2003 and January 2007, divided into two groups: the elderly (238 patients > or = 70 years; Group A) and the young (195 patients < or = 60 years; Group B). Transit time flowmetric (TTF) maximum and mean flow, pulsatility index (PI), and graft flow reserve (GFR) were compared. Hospital outcome was analyzed. Hospital mortality, need for intra-aortic balloon pump, troponin I, and echocardiographic segmental kinetics were comparable between the two groups (P = not significant [NS]). Stratifying patients for target vessels and type of arterial CABG, no differences in TTF results were recorded between the two groups either on-pump (P = NS) and off-pump (P = NS), both for the two internal mammary arteries (P = NS irrespective of the target vessel) and the radial artery conduits (P = NS irrespective of the target vessel). Although graft flow reserve was significantly recruited in all patients (P < 0.05 in young and elderly, either on-pump and off-pump, irrespective of the arterial conduit and the grafted vessel), GFR of all arterial grafts was comparable between elderly and young patients, either on-pump (P = NS) or off-pump (P = NS). Art-CABG showed similar TTF results in elderly and young patients, regardless of the arterial conduit, target vessel, or surgical technique employed. These functional results supported the reported survival benefit of arterial revascularization in the elderly.

[Elderly patients with cardiovascular diseases]

What is the difference in cardio-vascular diseases in the elderly? - In elderly patients with acute coronary syndrome the diagnosis is frequently hampered by non-specific symptoms and these patients often seek medical help later than younger individuals. Elderly and old patients with acute coronary syndrome are still less frequently being referred to percutaneous coronary intervention (PCI) than younger patients, although statistically even octogenarians profit from PCI more than from thrombolysis or purely drug therapy. In stable coronary artery disease the focus is on consistent treatment of risk factors. Therapy of systolic heart failure in the elderly is not fundamentally different from that administered to younger individuals, and therapy is just as effective. In old age diastolic heart failure is frequent. The risk of thrombo-embolic complications in atrial fibrillation increases with age. What makes the difference in cardio-vascular diseases in the elderly? - Physiological organ aging processes and immunosenescence provide possible explanations for the frequently atypical clinical presentation of severe ailments and altered pharmacokinetics in old age. Influenza and pneumococcus vaccinations are effective in preventing cardiovascular events.

Effects of an intervention on health behaviors of older coronary artery bypass (CAB) patients

Coronary artery bypass (CAB) patients are older increasingly more often than before. Effectiveness of cardiac rehabilitation among the elderly is not yet adequately known about. The purpose was to describe short-term (3-month), intermediate (6-month), and long-term (12-month) effects of health counseling, guidance, and adjustment education in groups on health, health behaviors, and functional abilities among older CAB patients. The study population was randomized to an intervention group (IG=49) and a control group (CG=68). Prior to CAB, intervention included one guidance and counseling group session and four sessions within 12 months following CAB. Intervention had positive effects on exercise activities, use of alcohol, and functional abilities among all participants, and on frequency of eating visible fat, fresh greens and vegetables among men. The intervention was effective with some exercise activities and functional abilities persisting for at least 1 year following CAB. Similar interventions may be arranged for older people. Health care professionals need to guide and encourage older people in their efforts to participate in them.

Long-term clinical outcome after percutaneous coronary interventions in the elderly: results for 512 consecutive patients

AIMS

Elderly patients are increasingly being referred for percutaneous coronary intervention (PCI), but there is a paucity of current data on the long-term outcome of elective PCI in elderly patients. We sought to define the risks facing elderly patients undergoing contemporary PCIs.

METHODS AND RESULTS

Retrospectively, in a single-centre registry, we studied the mortality and the outcome of 512 consecutive patients > 75 years old who underwent PCI, between January 1st 2000 and December 31st 2001. Clinical endpoints included in-hospital mortality; major adverse cardiovascular and cerebro-vascular events (MACCE) defined by the components of death, myocardial infarction, stroke, and repeat coronary revascularisation (target vessel revascularisation or not) by surgery or PCI, within the hospitalisation period and at long-term follow up. We compared 315 patients 75-79 years old (group I) with 197 patients > 80 years old (group II). In-hospital mortality and MACCE rates were not different between the two groups. Independent predictors of in-hospital major events found by multivariate analysis were: ST-segment elevation myocardial infarction or STEMI (Odds Ratio [OR]=2.58, 95% CI=1.15-5.78), left ventricular ejection fraction or LVEF <40% (OR=4.98, 95% CI=2.19-11.36) and prior coronary artery bypass grafting or CABG (OR=3.13, 95% CI=1.06-9.26). Mean long-term follow-up was 51.3 months. Death was significantly more frequent in the older group (42% vs 26%, p<0.0001). Independent predictors of long-term mortality found by multivariate analysis were: LVEF < 40% (Hazard Ratio=4.12, 95% CI=2.69-6.32), creatinine rate (HR=1.00, 95% CI=1.00-1.006) use cut-off see table and prior carotid surgery or stroke (HR=2.2, 95% CI=1.19-4.14).

CONCLUSIONS

Although age is not an independent predictive factor of morbidity or mortality, co-morbidities in the elderly strongly influence long-term clinical outcomes after PCI.

Percutaneous coronary intervention in the elderly for myocardial infarction in the poststent era

BACKGROUND

Patients of > or =70 years of age and with acute coronary syndrome accumulate more risk factors with poor outcomes. Surgical revascularization is associated with increased mortality when compared with young population. The aim of this study was to communicate a single, small center experience, of percutaneous coronary intervention in the elderly in poststent era.

PATIENTS AND METHODS

Seventy-five consecutive patients, > or =70 years of age, with myocardial infarction (MI) at admission, between January, 2005 and November, 2006. We evaluate major and minor events during hospitalization.

RESULTS

Patients (64%) were male, 53.3% hypertension, 38.7% diabetes mellitus. Clinical presentation was: ST-segment elevation MI 53.3% and 5.3% with cardiogenic shock. Mean left ventricle ejection fraction was 48.5 +/- 18%. The procedure was successful in all the cases and culprit lesions received at least one stent in 93.4%. In-hospital major events were registered in 6.6% of cases: 3 (4%) death and 2 (2.6%) nonfatal MI; minor complications were registered in 5.2% of cases.

CONCLUSION

Percutaneous coronary intervention in patients >70 years of age during MI is feasible and safe, with low rates of complications.

Clinical outcome and quality of life of octogenarian patients following percutaneous coronary intervention or surgical coronary revascularization

BACKGROUND

Thus far, the outcome and effect of percutaneous coronary intervention (PCI) or coronary artery bypass graft (CABG) surgery on the quality of life of octogenarian patients has not been accurately assessed in Japan.

METHODS AND RESULTS

A retrospective analysis of the outcome of invasive coronary revascularization in 130 elderly patients (age, > or =80 years) with ischemic coronary disease was carried out. Their current quality of life was determined by the Seattle Angina Questionnaire. Although the in-hospital death rate was relatively high (21.6% after PCI and 14.3% after CABG surgery), the long-term outcome of the patients who did not die during the in-hospital period after the PCI/CABG surgery was acceptable (5-year survival rate, >60%). All domains of the questionnaire received a favorable score from a majority of the survivors, irrespective of the treatment they received.

CONCLUSIONS

The quality of life and longevity of the octogenarian patients following extensive invasive revascularization for ischemic coronary artery disease were satisfactory.

Outcome in the elderly undergoing percutaneous coronary intervention with sirolimus-eluting stents: results from the prospective multicenter German Cypher Stent Registry

BACKGROUND

Patients older than 75 years undergoing percutaneous coronary interventions are at increased risk for major adverse cardiac events strongly influenced by comorbidities. In various randomized trials, sirolimus-eluting stent (SES) implantation has been shown to decrease the incidence of in-stent restenosis and to reduce repeat revascularization regardless of patient age.

METHODS

The present study evaluates the outcome after SES implantation in 954 patients older than 75 years compared with 5801 patients younger than 75 years enrolled in the German Cypher Registry in a routine clinical setting.

RESULTS

The elderly were at higher risk regarding renal failure, diabetes, hypertension, impaired left ventricular function, and 3-vessel disease. The SES implantation resulted in an impressive relief of angina. As expected, in-hospital and 6-month mortality rates were higher in the elderly. However, there was no difference with respect to the rate of major adverse cardiac events (death, myocardial infarction, ischemia-driven target vessel revascularization) at 6-month follow-up.

CONCLUSIONS

Nonfatal complications such as myocardial infarction or repeat target vessel revascularization did not increase with age, even taking patients older than 80 years into account.

Simple Index to Predict Likelihood of Skilled Nursing Facility Admission After Coronary Artery Bypass Grafting Among Older Patients

BACKGROUND

Acceptable short-term mortality rates for elderly patients undergoing coronary artery bypass grafting (CABG) are reported in the literature. However, rather than death, older patients considering CABG are generally most concerned about a postoperative loss of functional independence. To address this concern, we describe an index that predicts a patient's likelihood of admission to a skilled nursing facility (SNF) after CABG.

METHODS

Logistic regression analysis of the California hospital discharge database during a 5-year period was performed to identify the most prevalent preoperative International Classification of Disease, 9th Revision Clinical Modification (ICD-9-CM) diagnoses associated with SNF admission after primary CABG in patients aged 65 years or older. Each diagnosis was weighted according to odds ratios to develop an index that predicts the likelihood of discharge to a SNF. The index was validated using our institutional database.

RESULTS

A total of 26,040 patients (mean age, 74.2 years; 67.2% men) fit our criteria. They had an in-hospital mortality rate of 3.09% and a 17.3% SNF discharge rate. Our index was a summation of nine selected preoperative ICD-9-CM diagnoses, which were assigned a value of 1 point (osteoarthritis, congestive heart failure, atrial fibrillation, myocardial infarction, anemia, obesity) or 2 points (female, chronic obstructive pulmonary disease, renal failure). Validation analysis produced a C statistic and pseudo r2 value of 0.6435 and 0.0408, respectively. Cut-point analysis suggests that patients with scores of 3 or higher can be considered "high-risk."

CONCLUSIONS

We describe a simple index to identify older patients at low-risk and high-risk for SNF admission after CABG. Such tools may be useful in counseling older patients considering CABG.

The elder patient with suspected acute coronary syndromes in the emergency department

OBJECTIVES

To describe the evaluation and outcomes of elder patients with suspected acute coronary syndromes (ACS) presenting to the emergency department (ED).

METHODS

This was a post hoc analysis of the Internet Tracking Registry for Acute Coronary Syndromes (i*trACS) registry, which had 17,713 ED visits for suspected ACS. First visits from the United States with nonmissing patient demographics, 12-lead electrocardiogram results, and clinical history were included in the analysis. Those who used cocaine or amphetamines or left the ED against medical advice were excluded. Elder was defined as age 75 years or older. ACS was defined by 30-day revascularization, Diagnosis-related Group codes, or death within 30 days with positive cardiac biomarkers at index hospitalization. Multivariable logistic regression analyses were performed to determine the association between being elder and 1) 30-day all-cause mortality, 2) ACS, 3) diagnostic tests ordered, and 4) disposition. Multivariable logistic regression was also performed to determine which clinical variables were associated with ACS in elder and nonelder patients.

RESULTS

A total of 10,126 patients with suspected ACS presenting to the ED were analyzed. For patients presenting to the ED, being elder was independently associated with ACS and all-cause 30-day mortality, with adjusted odds ratios of 1.8 (95% confidence interval [CI] = 1.5 to 2.2) and 2.6 (95% CI = 1.6 to 4.3), respectively. Elder patients were more likely to be admitted to the hospital (adjusted odds ratio, 2.2; 95% CI = 1.8 to 2.6), but there were no differences in the rates of cardiac catheterization and noninvasive stress cardiac imaging. Different clinical variables were associated with ACS in elder and nonelder patients. Chest pain as chief complaint, typical chest pain, and previous history of coronary artery disease were significantly associated with ACS in nonelder patients but were not associated with ACS in elder patients. Male gender and left arm pain were associated with ACS in both elder and nonelder patients.

CONCLUSIONS

Elder patients who present to the ED with suspected ACS represent a population at high risk for ACS and 30-day mortality. Elders are more likely to be admitted to the hospital, but despite an increased risk for adverse events, they have similar odds of receiving a diagnostic test, such as stress cardiac imaging or cardiac catheterization, compared with nonelder patients. Different clinical variables are associated with ACS, and clinical prediction rules utilizing presenting symptoms should consider the effect modification of age.

Left main coronary artery stenosis: state-of-the-art

Patients with stenosis of the left main coronary artery present difficult challenges. The risks associated with this lesion have been known since the early days of angiography when patients were found to have increased mortality during follow-up. This information led to the general guidelines that surgical revascularization should be considered the treatment of choice in patients with significant left main coronary artery stenosis. Current advances in invasive cardiology have brought important information to the field. Intravascular ultrasound is now used routinely to evaluate angiographically indeterminate lesions with criteria now set forward as to what constitutes an indication for revascularization. Stents have even further dramatically changed the landscape. There are substantial issues, however, that need to addressed. These include the following: (1) the effect of specific lesion location on outcome - it is known that patients with distal bifurcation left main disease have worse outcome; (2) the potential for subacute thrombosis of the left main coronary artery; (3) the impact of left ventricular function and patient comorbidities irrespective of the degree and location of left main coronary artery stenosis; and (4) the risk-benefit ratio of stenting versus coronary artery bypass graft surgery. These issues are currently being addressed in two seminally important trials including the SYNTAX trial, which randomizes patients with left main and/or three-vessel disease to either coronary artery bypass graft surgery or a TAXUS drug-eluting stent. This trial is in the final stages of patient recruitment and will have important implications for the field. The other trial is the COMBAT trial, which is focused exclusively on left main coronary artery stenosis and randomizes patients with left main coronary artery disease either to a Sirolimus-eluting stent (Cypher, Johnson and Johnson Cordis, USA) or to coronary artery bypass graft surgery. The field of left main coronary artery disease continues to expand in terms of the evidence available for optimal patient evaluation and selection of treatment modalities.

Comparison of radial versus femoral approach for percutaneous coronary interventions in octogenarians

BACKGROUND

The safety and efficacy of a radial approach for percutaneous coronary intervention (PCI) in octogenarians is not well established.

METHODS

To evaluate the benefits of a radial approach for preventing vascular complications after PCI, clinical, procedural, and outcome data were prospectively collected and compared for 228 octogenarians undergoing elective PCI either through a radial or a femoral approach.

RESULTS

Radial approach was associated with longer cannulation (3.1 +/- 2.9 vs. 2.0 +/- 2.0 min, P < 0.001) and fluoroscopy times (19.3 +/- 16.1 vs. 16.1 +/- 11.8 min, P = 0.04), greater utilization of contrast media (224 +/- 46 vs. 182 +/- 20 ml, P < 0.001) and higher crossover rate (11 vs 4%, P = 0.03) to alternate access site compared with the femoral approach. However, ambulation time (5.2 +/- 3.1 vs. 11.6 +/- 6.3 hr, P < 0.001), access site bleeding (4 vs. 14%, P = 0.007), hematoma (1 vs. 11%, P = 0.001) or any vascular complication (5 vs 26%, P = 0.001) were significantly reduced with a radial approach. Procedural success rates were equivalent with both approaches. Multivariate regression analysis identified radial approach (OR = 0.23; CI = 0.08, 0.65) as an independent negative predictor of postprocedural vascular complications.

CONCLUSION

Radial approach for PCI in octogenarians is technically challenging for the operator and exposes patients to greater volume of nephrotoxic contrast media. However, it results in early ambulation and significantly reduces vascular complications in this high risk population. These findings support a strategy of preprocedural risk assessment and use of radial approach for PCI in a select group of octogenarians to maximize benefits offered by this technique.

Advanced glycation endproducts: a biomarker for age as an outcome predictor after cardiac surgery?

OBJECTIVE

A decline in the function of all organs can be detected during ageing. Although the trend appears to be stable, deviation within the elderly population is much greater in comparison to young controls. The aim of the study was to identify a marker of senescence which correlates to heart function. Advanced glycation endproducts (AGEs) accumulate with age and are associated with degenerative diseases.

METHODS

Carboxymethyllysine (CML) concentrations in the pericardial fluid (as a measure of AGEs) were analysed with ELISA technique in 75 patients undergoing cardiac surgery and correlated with clinical parameters and outcome of these patients.

RESULTS

CML content of pericardial fluid increases significantly with age. AGEs show an inverse correlation to left ventricular ejection fraction. High CML levels correlate with poor outcome of patients as shown by adverse cardiac events, prolonged ventilation time and prolonged stay within the Intensive Care Unit. Within all parameters, AGE concentration of the pericardial fluid fits better with the outcome of the patients in comparison to age alone. Interestingly, medical treatment with nitrates correlates with increased CML content.

CONCLUSION

AGEs, in addition to being a marker of senescence, appear to represent a prognostic factor in cardiac surgery, which can be used as a predictor of patient outcome.

Coronary angiography in the elderly with acute myocardial infarction

BACKGROUND

Despite the high mortality rate in elderly patients with acute myocardial infarction (AMI), the value of coronary angiography (CA) in the elderly has been questioned due to a less favorable outcome. The aim of the study was to determine the prognostic significance of CA on mortality of elderly patients AMI in "real world" practice.

METHODS

The study cohort comprised 1009 elderly (age > or = 75 years) patients with AMI who were derived from three prospective national surveys between 1996 and 2000 in all 25 CCUs operating in Israel. Baseline characteristics, hospital course, management and outcome of 274 (27%) elderly patients who underwent CA during the index hospitalization were compared with 735 (73%) counterpart patients who did not.

RESULTS

Patients who underwent CA were on average 2.2 years younger, and were more often with hyperlipidemia (p<0.0001 for each) and with a history of previous percutaneous coronary intervention (p<0.03) than the control group. They had a more favorable clinical presentation: a higher systolic blood pressure (p<0.04), a better Killip class (p<0.03) and an increased frequency of non-Q wave MI (p<0.03). They developed more often recurrent MI (p=0.002) and re-ischemia (p<0.0001). Variables associated with CA use during the index hospitalization were re-infarction, re-ischemia, the year of the index AMI and the availability of an on-site a catheterization laboratory in the hospital, while a higher age and fibrinolytic therapy decreased the likelihood of CA use. Of the patients who underwent CA, 67% underwent coronary revascularization (either PCI and/or CABG). Crude and adjusted mortality rates at 1 year were significantly lower in patients who underwent CA, as compared to counterparts who did not: 21% vs. 37.3%, respectively (p<0.0001), hazard ratio=0.52 (95% confidence interval 0.38-0.71). The benefit of CA was noted in a wide range of subgroups analyzed.

CONCLUSIONS

In "real world" practice, elderly patients with AMI who undergo CA during hospitalization have a better prognosis at 1 year. Age alone should not be a deterrent to performing CA in elderly patients with AMI. Further large randomized trials are needed to confirm that an invasive approach is beneficial in high-risk elderly patients with AMI.

CONDENSED ABSTRACT

To determine the prognostic significance of coronary angiography (CA) during the course of acute myocardial infarction (AMI) in "real world" practice on mortality of elderly patients, 1009 such patients were studied. Re-infarction, re-ischemia, the year of the index AMI and the availability of an on-site a Cath. Lab. were variables which increased the likelihood of undergoing CA, while a higher age and fibrinolytic therapy decreased this likelihood. The crude and covariate adjusted mortality rates at 1 year were significantly lower in patients who underwent CA in comparison to counterparts who did not: 21% vs. 37.3%, respectively (p<0.0001), hazard ratio 0.52 (95% confidence interval 0.38-0.71). The benefit of CA was noted across a wide range of subgroups analyzed.

The impact of age on outcomes after coronary artery bypass surgery versus stent-assisted percutaneous coronary intervention: one-year results from the Stent or Surgery (SoS) trial

BACKGROUND

Relative outcomes of coronary artery bypass grafting (CABG) and percutaneous coronary intervention (PCI) may differ between younger and older patients. There are no data comparing the age-related CABG versus PCI outcomes in the stent era.

METHODS

The SoS trial compared CABG (n = 500) and stent-assisted PCI (n = 488). The impact of treatment assignment on 1-year outcomes was evaluated by age < or = 65 years (n = 295, CABG; n = 298, PCI) and > 65 years (n = 205, CABG; n = 190, PCI).

RESULTS

One-year procedural outcomes were similar between treatment groups regardless of age, with the exception of more repeat revascularizations after PCI (age < or = 65, 16.1% vs 4.8%; age > 65, 19.5% vs 3.4%; both P < .001). Six and 12-month Seattle Angina Questionnaire scores improved from baseline in both age and treatment groups. However, CABG was associated with greater improvement in physical limitation, angina frequency, and quality of life in younger patients at 6 and 12 months (12-month difference in improvement between CABG and PCI: 5.6, 4.8, and 3.9 points for 3 domains), whereas in the elderly a significant benefit of CABG observed at 6 months did not persist at 12 months (12-month difference: 0.9, 1.9, and 1.4). One-year costs were significantly higher after CABG regardless of age.

CONCLUSIONS

Although PCI and CABG result in similar rates in clinical outcomes irrespective of age, younger patients reported more health status benefits from CABG as compared with PCI, whereas in older patients the 2 approaches resulted in similar 1-year health status benefits.

Treatment and outcomes of severe cardiac disease with surgical indication in very old patients

OBJECTIVE

To describe and compare the crude and risk-adjusted survival of a series of octogenarians with symptomatic severe aortic stenosis (SAS) or severe coronary artery disease (SCAD).

METHODS

We reviewed the treatment and outcomes of 130 consecutive patients > or = 80 years old hospitalized for SAS or SCAD.

RESULTS

Mean age was 82.8+/-3.1 years, 52% were women. Of 83 patients with SCAD, 52 were treated by coronary stenting (63%), 12 by coronary artery bypass grafting (15%) and 19 medically (23%). There were no significant differences in baseline characteristics among different treatment groups. When comparing the medically treated group with the intervention group (coronary artery bypass grafting or stenting), the former showed a trend to a worse prognosis (adjusted HR 2.5, 95% CI 0.98-6.6, p=0.056). Of 47 patients treated with SAS, 33 were treated surgically (70%), 26 by aortic valve replacement (AVR) alone and 7 combined with coronary revascularization. Fourteen patients were treated medically (30%). Patients treated with AVR were younger, presented less frequently a previous MI and had better left ventricular systolic function. Multivariate analysis did not find AVR associated to a better survival (HR 1.1, 95% CI 0.2-5.4).

CONCLUSION

Cardiac surgery in octogenarians is more frequently performed in patients with SAS than in patients with SCAD, but survival benefit is probably greater in the latter. A more conservative approach with medical therapy in patients with SAS and coronary stenting in patients with SCAD are alternatives that should be considered.

"Do Least Harm" Philosophy May Suffice for Percutaneous Coronary Intervention in Octogenarians

BACKGROUND

Octogenarians represent one of the most rapidly expanding segments of the population and an ever growing number are undergoing percutaneous coronary intervention (PCI). A simplified approach with incomplete or "culprit-lesion" only PCI may be an option even in multivessel disease, to minimize periprocedural complications while still allowing a meaningful clinical recovery in patients with inherent functional limitations related to age itself. We tried to determine the effects of either complete or partial PCI on procedural and long-term outcome in a consecutive series of octogenarians.

METHODS

In-hospital and 1-year clinical outcomes were collected in elderly patients treated with PCI between January 1998 and March 2004 in our institution.

RESULTS

In a total of 165 octogenarians, 73 elderly patients (44%) underwent complete (COM) and 92 (56%) incomplete (INC) revascularization. Major in-hospital cardiac events were similar in the two subgroups. At 1-year follow-up 65% of patients in the COM and 68% in the INC group (P = ns) referred improvement in angina status and quality of life. Clinically driven repeat PCI was necessary in 16% of COM and 15% of INC patients. Recurrent PCI was mostly required to treat a restenotic index lesion in both groups, while only five patients in the INC group (5.4%) required PCI of a different lesion.

CONCLUSIONS

Current PCI coronary techniques are safe and effective in octogenarians. Restenosis remains the main cause for recurrent events after bare metal stents. Percutaneous revascularization limited to the culprit lesion may suffice in most patients, with favorable clinical outcome at 1 year.

Cardiac surgery in the elderly: indications and management options to optimize outcomes

The elderly have increasingly benefited from the advances in cardiac surgical techniques and perioperative care. Compared to the same procedures in younger patients their operations can be more technically demanding and their level of reserve leaves less margin should complications occur. The importance of using realistic indications for operations with a focus on improving the quality of their lives and of optimal preoperative preparation of patients is emphasized.

Selection bias of elderly patients with chronic angina referred for catheterization

BACKGROUND

Registry patients are generally older and more sick than patients enrolled in trials questioning the generalizability of trial results. We assessed whether such a selection bias also exists in elderly patients with chronic angina referred for catheterization.

METHODS AND RESULTS

All 119 patients age>or=75 years with Trial of Invasive versus Medical Therapy in the Elderly (TIME) inclusion but no major exclusion criteria referred for catheterization during the TIME trial inclusion period in four TIME centers were registered and followed-up for one year. Registry patients differed from the 188 trial patients in the same hospitals in that they were younger, somewhat more frequently male, with less antianginal drugs and studied more often after acute chest pain at rest but with more comorbidities than study patients. Left ventricular ejection fraction and vessel disease were similar. One year mortality was 11.4% in registry and 9.6% in invasive TIME patients but differences disappeared after adjustment for baseline differences. Symptomatic status after one year was similar too.

CONCLUSIONS

In elderly patients with chronic angina, a bias in the selection for invasive management exists which seems different from that reported in younger patient settings. After adjustment for these selection factors, however, one-year outcome was remarkably similar in registry and trial patients.

[Therapeutic attitude after coronariography in elderly patients with ischemic heart disease]

INTRODUCTION

The incidence of ischemic heart disease in the elderly is high. These patients are increasing referred for coronariography.

OBJECTIVES

Identify factors associated with coronary revascularization in elderly patients.

MATERIAL AND METHODS

Retrospective study of 473 patients > or = 75 years who underwent coronariography in relationship with ischemic heart disease. Their clinical-epidemiological characteristics and treatment adopted were analyzed. A multivariate analysis model was used to identify factors associated with revascularization.

RESULTS

Mean age was 77.6 +/- 2.8 years; 70.4% were men. A total of 36% smoked, 53% were hypertensive, 33% diabetics and 30% dislipidemic. Thirty one % had multivessel disease and 11% involvement of left coronary trunk. There was evidence of anterior descending artery in 68%. Medical treatment was done in 48.4%, percutaneous revascularization in 41.5% and surgical in 10.1%. Patients with lesions of the anterior descending artery were revascularized in greater proportion: 67.7% vs 32.3%; p. 0.001. A logistic regression model was used to identify revascularization predictors, obtaining a direct relationship with the involvement of the anterior descending artery (OR: 4.87; 95% CI: 2.98-7.94; (p < 0.001) and inverse on with the previous revascularization (OR: 0.47; 95% CI: 0.26-0.85; p < 0.02), left ventricular dysfunction (OR: 0.58; 95% CI: 0.39-0.88; p = 0.01) and presence of multivessel disease (OR: 0.51; 95% CI: 0.31-0.84; p < 0.01).

CONCLUSIONS

The elderly subjects with ischemic heart disease who underwent coronariography received revascularizing treatment in somewhat more than 50% of the cases. A direct relationship was found between involvement of the anterior descending artery and performance of revascularizing treatment and an inverse on between previous revascularization, left ventricular dysfunction and presence of multivessel disease.

Opportunities for gene therapy in preventing vein graft failure after coronary artery bypass surgery

The poor patency rates for coronary artery bypass grafting (CABG) using autologous saphenous vein necessitate the need for continued research into the potential clinical utility of gene therapy. Bypass grafting is ideally suited for gene therapy, as graft can be genetically modified ex vivo prior to grafting in the coronary vasculature. Research to date has demonstrated effective blockade of late vein graft failure through overexpression of a variety of transgenes that modulate the proliferative, migratory and/or apoptotic indexes of cells in the graft wall. This has resulted in a substantial wealth of preclinical data that support advancement to clinical trials. Future translation into clinical trials will ensure that this exciting and highly relevant area of gene therapy is fully evaluated for potential routine clinical practice to improve patency rates of bypass graft procedures involving saphenous vein.

Outcomes in octogenarians undergoing coronary artery bypass grafting

BACKGROUND

Although octogenarians are being referred for coronary artery bypass grafting (CABG) with increasing frequency, contemporary outcomes have not been well described. We examined data from 4 Canadian centres to determine outcomes of CABG in this age group.

METHODS

Data for the years 1996 to 2001 were examined in a comparison of octogenarians with patients less than 80 years of age. Logistic regression analysis was used to adjust for preoperative factors and to generate adjusted rates of mortality and postoperative stroke.

RESULTS

A total of 15,070 consecutive patients underwent isolated CABG during the study period. Overall, 725 (4.8%) were 80 years of age or older, the proportion increasing from 3.8% in 1996 to 6.2% in 2001 (p for linear trend = 0.03). The crude rate of death was higher among the octogenarians (9.2% v. 3.8%; p < 0.001), as was the rate of stroke (4.7% v. 1.6%, p < 0.001). The octogenarians had a significantly greater burden of comorbid conditions and more urgent presentation at surgery. After adjustment, the octogenarians remained at greater risk for in-hospital death (odds ratio [OR] 2.64, 95% confidence interval [CI] 1.95-3.57) and stroke (OR 3.25, 95% CI 2.15-4.93). Mortality declined over time for both age groups (p for linear trend < 0.001 for both groups), but the incidence of postoperative stroke did not change (p for linear trend = 0.61 [age < 80 years] and 0.08 [age > or = 80 years]). Octogenarians who underwent elective surgery had crude and adjusted rates of death (OR 1.31, 95% CI 0.60-2.90) and stroke (OR 1.59, 95% CI 0.57-4.44) that were higher than but not significantly different from those for non-octogenarians who underwent elective surgery.

INTERPRETATION

In this study, rates of death and stroke were higher among octogenarians, although the adjusted differences in mortality over time were decreasing. The rate of adverse outcomes in association with elective surgery was similar for older and younger patients.

Evolution in Cardiovascular Care for Elderly Patients With Non–ST-Segment Elevation Acute Coronary Syndromes

OBJECTIVES

This study evaluated the impact of age on care and outcomes for non-ST-segment elevation acute coronary syndromes (NSTE ACS).

BACKGROUND

Recent clinical trials have expanded treatment options for NSTE ACS, now reflected in guidelines. Elderly patients are at highest risk, yet have previously been shown to receive less care than younger patients.

METHODS

In 56,963 patients with NSTE ACS at 443 U.S. hospitals participating in the Can Rapid Risk Stratification of Unstable Angina Patients Suppress Adverse Outcomes With Early Implementation of the American College of Cardiology/American Heart Association Guidelines (CRUSADE) National Quality Improvement Initiative from January 2001 to June 2003, we compared use of guidelines-recommended care across four age groups: <65, 65 to 74, 75 to 84, and > or =85 years. A multivariate model tested for age-related differences in treatments and outcomes after adjusting for patient, provider, and hospital factors.

RESULTS

Of the study population, 35% were > or =75 years old, and 11% were > or =85 years old. Use of acute anti-platelet and anti-thrombin therapy within the first 24 h decreased with age. Elderly patients were also less likely to undergo early catheterization or revascularization. Whereas use of many discharge medications was similar in young and old patients, clopidogrel and lipid-lowering therapy remained less commonly prescribed in elderly patients. In-hospital mortality and complication rates increased with advancing age, but those receiving more recommended therapies had lower mortality even after adjustment than those who did not.

CONCLUSIONS

Age impacts use of guidelines-recommended care for newer agents and early in-hospital care. Further improvements in outcomes for elderly patients by optimizing the safe and early use of therapies are likely.

Octogenarians undergoing cardiac surgery outlive their peers: a case for early referral

OBJECTIVE

To examine short and long term outcomes of octogenarians having heart operations and to analyse the interaction between patient and treatment factors.

METHODS

Multivariate analysis of prospectively collected data and a survival comparison with an age and sex matched national population. The outcomes were base in-hospital mortality, risk stratified by logistic EuroSCORE (European system for cardiac operative risk evaluation), and long term survival.

RESULTS

12,461 consecutive patients (706 over 80 years) operated on between 1996 and 2003 in a regional UK unit were studied. Octogenarians more often had impaired ventricular function, pulmonary hypertension, and valve operations. They also included a higher proportion of women, had a higher serum creatinine concentration, and had a trend towards more unstable angina. Younger patients had a higher prevalence of previous cardiac operation, previous myocardial infarction, and diabetes. The in-hospital mortality rate was 3.9% for all patients (EuroSCORE predicted 6.1%, p < 0.001) and 9.8% for octogenarians (predicted 14.1%, p = 0.002). Long bypass time and non-elective surgery increased the risk of death above EuroSCORE prediction in both groups. A greater proportion of octogenarians stayed in intensive care more than 24 hours (37% v 23%, p < 0.001). Long term survival was significantly better in the study patients than in a general population with the same age-sex distribution (survival rate at five years 82.1% v 55.9%, p < 0.001).

CONCLUSIONS

Cardiac surgery in a UK population of octogenarians produced excellent results. Elective referrals should be encouraged in all age groups.