Prognostic impact of coronary collaterals in acute coronary syndrome (PICC-ACS): A meta-analysis of observational studies

INTRODUCTION: The coronary collateral circulation (CCC) is an alternative source of blood supply in coronary artery disease (CAD). The prognostic value of the presence of CCC at the time of acute coronary syndrome (ACS) is undefined with regards to hard outcomes, particularly reduction in mortality. The study's aim is to determine if the presence of CCC demonstrated by coronary angiography during an ACS is associated with a reduction in mortality.  METHODS: We conducted a systematic search of studies using MEDLINE, EMBASE, ScienceDirect, Scopus, and Cochrane Central Register of Controlled Trials databases in all languages and examined reference lists of studies. The inclusion criteria were 1) observational; 2) population included adults >19 years old with an acute coronary syndrome; 3) reported data on mortality in association with the presence or absence of CCC on angiography; and 4) should have controlled for confounders by using logistic regression analysis. Study quality was assessed using the Newcastle-Ottawa Quality Assessment Scale for observational studies. The outcome of interest was reduction in all-cause mortality, assessed using Mantel-Haenzel analysis of random effects to compute for risk ratios. RESULTS: Pooled analysis from 11 identified trials with 8,370 subjects showed that among patients with ACS who underwent coronary angiography, the presence of CCC showed a trend towards benefit in terms of mortality, but was not statistically different from those without CCC [RR 0.65, (95% CI 0.38 to 1.12), p CONCLUSION: The presence of CCC during ACS showed a trend towards mortality reduction. Further, among patients treated with PCI, those with CCC had an incrementally significant reduction in mortality compared to those without CCC.

The role of prophylactic renin-angiotensin system inhibitors for the prevention of anthracycline-induced cardiotoxicity among adult cancer patients: A meta-analysis

INTRODUCTION: Anthracycline is a cornerstone in the treatment of various cancers. One major limitation to its use is cardiotoxicity. Renin angiotensin system (RAS) inhibitors have been shown to attenuate myocardial injury, initial data is promising in its use as prophylaxis for anthracyclineinduced cardiotoxicity. The aim of the study is to determine effectiveness of prophylactic RAS inhibitors in preventing anthracycline-induced cardiotoxicity and adverse cardiac events among adult cancer patients METHODS: Systematic search of databases PUBMED, MEDLINE, EMBASE, and CENTRAL was done. Selection criteria were: 1) randomized controlled trials (RCT) 2) adult cancer patients with normal ejection fraction and without heart failure symptoms 3) RAS inhibitors as prophylaxis versus placebo 4) development of cardiac events, all-cause mortality and left ventricular ejection fraction (LVEF) reduction as outcomes. Two reviewers independently assessed the trials. Disagreements were resolved with a third reviewer. Test for effect of intervention, heterogeneity, trial quality and risk of bias were assessed using the Cochrane Review Manager Software version 5.3. RESULTS: Five RCTs involving 530 adult patients, with average age of 50± two years old, and average follow-up from six months to three years were included. Combined clinical outcomes of heart failure, cardiac events and all-cause mortality showed an RR of 0.27[95%CI 0.18, 0.40],p CONCLUSION: Renin angiotensin system (RAS) inhibitors may be used as prophylaxis for cardiotoxicity. As prophylaxis, it reduced the clinical outcome of cardiac events, heart failure, and all-cause mortality among cancer patients needing anthracycline. Combined RAS inhibitor and betablocker limits LVEF reduction.

Four-year clinical outcomes of Filipino patients with or at risk for atherothrombotic events from the REACH registry

INTRODUCTION: Patients with established atherothrombotic disease (EAD) or those with only atherothrombotic risk factors are at high risk for cardiovascular events and death. There are scant data on the clinical profile of stable Filipino patients with or at risk for atherothrombosis and their long-term outcomes. The authors'objective is to present the baseline clinical profile and four-year cardiovascular outcomes in Filipino outpatients with EAD and those with multiple atherothrombotic risk factors in comparison to the Asian and Global populations METHODS: The Reduction of Atherothrombosis for Continued Health (REACH) registry is an international, prospective cohort of 68,236 patients aged at least 45 years old with either EAD or at least three atherothrombotic risk factors enrolled from 44 countries in 2003-2004. The Philippine cohort consists of 1040 outpatients with EAD (N=913) or at least three atherothrombotic risk factors (N=127) consecutively enrolled and followed up for at least one to four years for the occurrence of cardiovascular death (CVD), myocardial infarction (MI) and stroke. RESULTS: Nine hundred fifty-five Filipino outpatients (96)% completed the four-year follow-up. Mean age is 65.5 years with similar sex distribution. Common risk factors included diabetes (46%), hypertension (87.4%), hypercholesterolemia (62.9%), and smoking history (29.7%). Ninety-two percent had EAD-- 43% with coronary artery disease, 45% with cerebrovascular disease (CVD) and four percent with peripheral artery disease (PAD). The combined primary endpoint of CVD/MI/stroke was 14.7%, but higher (19.8%) among those with polyvascular disease. Cerebrovascular disease (CVD) patients had the highest CVD/MI/stroke rates (17.6%); PAD patients had the highest CVD/MI/stroke and hospitalization rate (33.2%). Baseline medication usage is 81.1% for antiplatelet agents, 62.6% for statins and 69% for angiotensin-converting enzyme inhibitor/angiotensin receptor blocker but four-year follow-up medication usage rates were lower. CONCLUSION: Filipino outpatients with or at risk for atherothrombosis experienced high long-term rates of CV events. This is the first report of long-term cardiovascular outcomes of stable Filipino outpatients with this high-risk profile.

Prevalence of cardiovascular risk factors in relation to socio-demographic profile of the life course study in cardiovascular disease epidemiology study (LIFECARE) Philippine cohort

OBJECTIVE: To describe the distribution of the clinical cardiovascular risk profile of the LIFECARE Philippine cohort in relation to its socio-demographic factors. METHODS: We recruited a total of 3,072 apparently healthy participants from Manila and nearby provinces of Rizal, Batangas, Bulacan and Quezon. Face-to-face interview was done to obtain socio-demographic data. Baseline clinical parameters and biochemical tests were obtained. Prevalence of cardiovascular risk factors was determined by sex, place of residence, level of education and employment. RESULTS: Overall prevalence of diabetes mellitus was at 5%, similar between sexes, area class, educational attainment and employment status. More smokers were male, employed or with an elementary level of education. Prevalence of hypertension was at 14.5% and was seen more in males, urban dwellers, employed or with an elementary level of education. Dyslipidemia was seen more in males, living in the rural areas, employed or with a college level of education. Lastly, obese participants were seen more in females, living in urban areas, employed with a college level of eduction. CONCLUSION: Older, male and employed participants who are living in the urban areas have more cardiovascular risk factors.

"You are what you eat:" Self-reported preferences for food taste and cooking methods of adult Filipinos (20-50 years old)

OBJECTIVE: To describe the self-reported preferences for food taste and cooking methods of adult Filipinos (20-50 years old). METHODS: This is a cross-sectional community survey of 3,072 adults from Metro Manila, Bulacan, Batangas, Quezon, Rizal. RESULTS AND CONCLUSION: There were differences in preferred tastes of males (food that tasted "just right", spicy) vs. females (salty); younger adults (sweet, spicy) vs. older adults (bland); urban (salty, spicy) vs. rural adults ("just right") adults with higher education (sweet, salty, spicy) vs. those with less schooling who liked food which tasted "just right." Smokers preferred spicy taste vs. non-smokers who liked sweet-tasting food. Adults who reported having had alcohol intake preferred spicy food. Those who reported feeling stressed liked savoury taste (sweet, salty) while those who were not stressed liked food which tasted "just right." Cooking with oil was the usual and the most preferred cooking method. Younger adults and smokers liked to use oil in cooking. Food which tasted "just right"/moderate was most preferred by adult Filipinos with hpertension or MeTS. Diabetics did not prefer sweet tasting food. More diabetics (p=0.05) and those with MeTS (p=0.003) usually use other cooking methods instead of frying. Eliciting self-reported taste preferences as well as the usual and preferred cooking methods is important for nutritional management and relevant lifestyle advice which healthcare providers should incorporate in their management of patients, especially those with hypertension, diabetes, and metabolic syndrome.

Where we are: socio-ecological and health profile of the Philippine LIFEcourse study in CARdiovascular disease epidemiology (LIFECARE) study sites

OBJECTIVE: This study aims to describe the socio-ecological and health profile of the Philippine LIFECARE study sites, its health care services and leading causes of mortality and morbidity. METHODS: This is a prospective cohort study that recruited participants aged 20-50 years from Metro Manila and four provinces (Bulacan, Batangas, Quezon, Rizal). Study sites were characterized according to their geographical area, terrain and environmental profile, and available health care system. RESULTS: 3,072 subejects were included, with male-to-female ratio of 1:1.3 and majority aged 30-50 years. Metro Manila was the most congested site. Two-thirds of the 62 villages (barangays) were rural, outside the town proper, and in lowlands. One-fourth were along coastal area. Almost all were accessible by public transportation. Majority have reduced forest cover, but were relatively safe from environmental hazards. Rural health units, hospitals, and professional health care workers were concentrated in Metro Manila. Leading cause of morbidity was respiratory tract infection, while cardiovascular diseases caused most of mortalities. CONCLUSION: Study sites were mainly rural, outside the town proper and in lowlands, with available public transportation. There is an unequal distribution of health resources. Cardiovascular diseases is still the leading cause of mortality. The disparities in geographical access to health care play an important role in shaping human health.

Who we are: Demographic and stress profile of the Philippine LIFECARE cohort

OBJECTIVE: To describe the demographic and stress profile of the participants in the LIFECARE cohort. METHODS: The Life Course Study in Cardiovascular Disease Epidemiology (LIFECARE) is a community-based prospective cohort of apparently healthy individuals aged 20 to 50 years old with no preexisting cardiovascular disease. The second phase out of four phases of study involves collection of baseline socio-demographic, anthropometric, biochemical and cardiovascular parameters and stress profiles. It was conducted via face-to-face interview using a survey questionnaire. RESULTS AND CONCLUSION: A total of 3072 participants from Metro Manila and 4 provinces in Luzon were recruited. The female to male ratio was 1.3:1. Majority of the participants were aged 30 years old and above. Most were married, employed and literate. Majority attained at least high school level of education. Loss of job was the most common stressor experienced in the past year. Majority of the cohort reported occasional experience of general stress and moderate level of financial stress. Occurrence of general stress within the past year was higher among females (p < 0.001), younger age-group (p=0.006), and among those who reached college level of education (p<0.001). Furthermore, level of current financial stress was high to severe among older age-group (p=0.004), and among widow/widower/separated (p<0.0001). While the relationship between psychosocial stress and physical illness had not been established in this study, there is a need to investigate demographics and psychosocial stress, and their implications in increasing adverse health outcomes in general, and cardiovascular risk in particular.

Clinical profile and outcomes of adult patients with echocardiographic evidence of cardiac tamponade at the Philippine General Hospital: A 5-year study (the captive-heart study)

BACKGROUND: Cardiac tamponade is a life-threatening hemodynamic condition from pericardial effusions that increase intrapericardial pressure suffeciently to externally compress and restrict cardiac chamber filling, constrain cardiac output, and induce backward failure. The number of pericardial effusions arising from cardiothoracic post-surgical and catheter-based procedures accounts for 70% of all the cases in one series. In the Philippines, tuberculous infection remains as one of the most common etiologies of pericarditis, and accounts for 25.1% of the 438 cases of pericardial effusion in a local review. METHODS: This is a retrospective cross-sectional study. The inpatient adult echocardiograhy database of the Philippine General Hospital-Section of Cardiology from June 2007 to June 2012 was reviewed, and all confirmed studies with evidence of cardiac tamponade on echocardiography were included. RESULTS: A total of 58 patients were included in this review. The age ranged from 18-75 years, with mean of 43±15 years. Thirty-eight (66%) patients were diagnosed cases of malignancy, with lung cancer as the most common type. The other concomitant conditions included pulmonary tuberculosis (12%), presence of pulmonary mass of undetermined etiology (7%), systemic lupus erythematosus (3%), endocrine disorder (3%), renal failure (3%), and post cardiac surgery status (2%). The most common clinical findings were tachycardia (84%) and elevated jugular venous pressure (57%). Hemodynamic compromise was seen in 8 patients (14%), and Beck's triad was present in only 5 (9%) of the cases. The pericardial effusions were moderate to large in size in 95% of the cases. All effusions were circumferencial, and 100% had right-sided chamber collapse, 38 (66%) of which had both right atrial and right ventricular diastolic collapse. CONCLUSIONS: Malignancy and TB pericarditis account for most cases of cardiac tamponade in our setting. There should be a high index of suspicion for cardiac tamponade among patients presenting with difficulty of breathing and tachycardia, especially on a background of malignancy of TB infection. Cardiac tamponade carries a high in-hospital mortality rate and prompt recognition and intervention is warranted. There was a higher rate of intervention among those who survived their hospitalization, a finding that is similarly reflected by a previous study.

Prevalence of coronary artery disease among adult patients with congenital heart disease who underwent coronary angiogram at the University of the Philippines-Philippine General Hospital from September 1998 to November 2011

OBJECTIVES: To determine prevalence of coronary artery disease (CAD) among adult patients with congenital heart disease (CHD), who underwent Coronary Angiography (CA) at the UP-PGH. Secondary: to determine severity of CAD lesions among these patients. METHODS: This is a descriptive study of adult patients with Congenital Heart Disease who underwent selective coronary angiography from September 1998 to December 2010 at the Philippine General Hospital. RESULTS: 52 adult patients with CHD underwent CA, Ten (19%) had angiographic evidence of coronary atherosclerosis visually. Significant CAD was found in 11.5% (n=6), all patients being ≥ 40 years old (mean age 54 ± 7.9 years; range 47 -61); 4 (66%) are female; Five (83%) have documented traditional CVD risk factors, mostly hypertensive (33%). None with significant CAD had cyanosis, 4 patients (66%) have typical chest pain. Majority of CHD's were simple (61%), mostly atrial septal defects (36%). Four (n=4)(70%) patients with Simple CHD, 2 (30%) patients with Intermediate CHD and none of those with Complex CHD had significant CAD. CONCLUSION: Prevalence of CAD among ACHD patients using CA in this study is 11.5%. This study supports the notion of routine CA among patients with ACHD ≥ 35 years old with traditional CV risk factors. Need for primary prevention of CAD and modification of traditional CV risk factors among these patients is emphasized, as important with the general population.

The UP-Philippine General Hospital acute coronary events at the emergency room registry (UP PGH-ACER)

OBJECTIVES: This study pilots the creation of a clinical registry for all patients admitted for Acute Coronary Syndromes(ACS) at the Philippine General Hospital (PGH) Emergency Room (ER). METHODS: This is a single-institution prospective observational study including all patients >18 years old admitted from September to October 2011 with suspected acute coronary syndromes. Abstraction of chart information using a data collection form was done. Patient's clinical data, medications received, and quality of care indicators were noted. The primary study outcome measure is the completeness of chart data, quality indicators such as door-to-ECG time and door-to-needle time, and the clinical profile of patients with ACS. RESULTS: Thirty patients were included, with equal numbers of males females, and a mean age of 59 years old. There were equal numbers of patients with STEMI (43%) and NSTEMI (43%). The most common risk factor was hypertension (72.4%) followed by smoking (34.48%). Around 20% are diabetics, and 31% have known lipid abnormalities or are on lipid-lowering agents. Around one third of the patients have had previous admissions for acute coronary events. Only two patients had angiographically confirmed CAD. The majority of patients assessed to have acute coronary syndromes (26 patients) were Killip Class I. Only one was cardiogenic shock upon admission. Temporal information such as time of first physician contact and time of drug administration was not available in more than half of the cases. While there is a high rate of physician compliance to guideline recommended therapies, temporal quality indicators sch as door-to-ECG time (2 hours) and door-to-needle time (3.5 hours) remain substandard. The rest of the patients presented beyond 12 hours of chest pain onset and were already chest pain free. Among those who were eligible for thrombolysis, 67% received thrombolytic therapy with streptokinase. No patient was given thrombolytic agent within 30 minutes upon admission to the emergency department. No patient underwent cardiac catheterization as the primary means of revascularization. Hence, door-to-balloon time could not be determined. CONCLUSION: A standardized ACS pathway for adequate documentation of information is necessary for a complete and effective clinical registry for ACS must be set in place. Establishment of an efficient clinical registry must be a joint effort of all services involved in the care for these patients. Proper documentation in clinical charts of patients admitted at the PGH-ER needs to be improved. The quality indicators such as door-to-ECG and door-to-needle time were remarkably above the guideline recommended targets. The compliance for class 1 medications among patients admitted for ACS during the time of the study was optimal.

Chronic heart failure guidelines: A critique

BACKGROUND: Chronic heart failure (HF) disease as an emerging epidemic has a high economic burden, hospitalization, readmission, morbidity rates despite many clinical practice guidelines recommendations. OBJECTIVE: To show that the attributed survival and hospitalization-free event rates in the reviewed chronic HF clinical practice guidelines' Class I-A recommendations as "initial HF drug therapy" is basically "add-on HF drug therapy" to the "baseline HF drug therapy" thereby under-estimating the "baseline HF drug therapy" significant contribution to the clinical outcome. METHODOLOGY: The references cited in the chronic HF clinical practice guidelines of the American Heart Association/American College of Cardiology (AHA/ACC), the Heart Failure Society of America (HFSA), and the European Society of Cardiology (ESC) were reviewed and compared with the respective guidelines' and other countries' recommendations. RESULTS: The "baseline HF drug therapy" using glycosides and diuretics is 79-100% in the cited HF trials. The survival and hospitalization event-free rates attributed to the "baseline HF drug therapy" are 46-89% and 61.8-90%, respectively. The survival and hospitalization-free event rate of the "initial HF drug therapy" is 61-92.8% and 61.8-90%, respectively. Thus the survival and hospitalization event-free rates of the "add-on HF drug therapy" are 0.4-15% and 4.6% to 14.7%, respectively. The extrapolated "baseline HF drug therapy" survival is 8-51% based on a 38% natural HF survival rate for the time period. CONCLUSION: The contribution of "baseline HF drug therapy" is relevant in terms of survival and hospitalization event-free rates compared to the HF Class 1-A guidelines proposed "initial HF drug therapy" which is in essence an "add-on HF drug therapy" in this analysis.

Adherence to guidelines on anticoagulant management among adult patients with atrial fibrillation at the Philippine General Hospital

BACKGROUND: Atrial fibrillation (AF) is the most common cause of embolic stroke. Although there is impressive risk reduction in stroke associated with warfarin therapy in clinical trials and guidelines on anticoagulation in AF, there are limited data on how well these goals are being met. This study aims to determine the adherence to guidelines on anticoagulant management among adult patients with AF at the Department of Internal Medicine Ward of the University of the Philippines - Philippine General Hospital (UP-PGH).METHODS: This is a prospective study, which included patients aged 18 years and older with diagnosis of AF, which can be paroxysmal, persistent, long-standing or permanent. Upon admission, patients were interviewed and information like age, gender, duration of AF, co-morbid illnesses, and medical history were collected using a checklist. Risk factors for bleeding, use of antiplatelet/anticoagulant agents and International Normalized Ratio (INR) values were also determined.RESULTS: There were 40 subjects included in the study, majority of which were female (77.5%) and in the 40-50 years age range (35%). There were 21 (52.5%) patients who had valvular AF and 19 (47.5%) who had non-valvular AF. Of those patients with valvular AF, 80.9% received warfarin. Of those patients with non-valvular AF, 94.7% were at moderate or high risk for thromboembolism, but only 47.4% of those patients received warfarin. We found that only a small percentage of patients (16%) had INR in the therapeutic range of 2.0-3.0. The majority of the patients had their INR in the sub-therapeutic ranges at 40% and 24% at INR values of 1.5-1.99 and 0-1.49 respectively. The majority of the patients on warfarin had INR monitoring ? 30 days, and these were patients already on chronic or long-term warfarin use. Those patients who had more frequent INR monitoring were those newly initiated on the treatment whose INR values where in the sub-therapeutic range.CONCLUSION: The adherence of anticoagulant management among AF patients admitted at the Internal Medicine Wards of UP-PGH, to evidence-based clinical practice guidelines, was high at 80.9% for patients with valvular AF and was quite low at 47.4% for non-valvular AF patients. Patients were found to have low bleeding risks based on a HAS-BLED score and patients with moderate to high thromboembolic risk factors were more often prescribed with warfarin, although only a few patients achieved a therapeutic INR. A more frequent INR monitoring including a close follow-up with the patients should be performed to achieve target INR in most patients with AF. Moreover, we should not discount starting anticoagulation in patients with non-valvular AF who have moderate to high thromboembolic risk factors.

Smoking burden in the Philippines

BACKGROUND: The 2nd National Nutrition and Health Survey (NNHeS II) was conducted in 2008 to measure the prevalence of lifestyle-related diseases and risk factors among adult Filipinos 20 years or older. One of the risk factors measured was smoking. METHODS: The survey used a stratified multi-stage sampling design and covered the 17 regions of the country. The clinical component included Filipino adults 20 years or older. Data was collected using health questionaires; anthropometric measurements were made, and blood examinations performed on all participants. The prevalence of smoking was determined. RESULTS: A total of 7,700 subjects were included in the survey. The over-all prevalence of current smokers was 31% (53.2% and 12.5% for men and women, respectively). 14% were former smokers (20.9% of men and 9.5% of women) while 25.9% of men and 78.1% of women were never smokers.Among current male smokers, the highest prevalence (57.7%) belonged to the 20-29 age group. While among current female smokers, the highest prevalence (23.2%) belonged to the greater than 70-year-old category.There were more current smokers in the rural areas (33.1%) than the urban areas (28.9%) and there were more current and former smokers among respondents whose educational attainment was at least tertiary level (62.7%). CONCLUSION: Tobacco use in the Philippines is still prevalent at 31% and is predominantly composed of males in the 20-29 age group. Current smoking is highest among rural dwellers and among individuals with elementary education, while majority of women and college level respondents are never smokers.

High sensitivity CRP and short-term cardiovascular risk among patients with acute myocardial infraction: A two-canter study

OBJECTIVE: To determine high sensitivity C-reactive protein (hsCRP) levels of patients admitted for myocardial infarction (MI) and determine its association with existing traditional cardiovascular (CV) risk factors and future cardiovascular events. METHODS: This was a prospective cohort study involving two centers, the Makati Medical Center and the University of the Philippines-Philippine General Hospital (UP-PGH). A total of 49 acute Ml patients who fulfilled the inclusion and exclusion criteria were enrolled in the study. Levels of hs-CRP were taken within 6 hours of admission. Demographic data, in-patient outcomes and 30-day clinical outcomes were observed. A univariate analysis with Fisher's Exact Test was done to determine if there was an association between hs-CRP levels and traditional CV risk factors, and clinical outcomes. RESULTS: There was a significantly higher difference in the primary composite endpoint of all-cause mortality, Ml, unstable angina and revascularization among patients with hs-CRP> 10 mg/dL(CI: 95%, p=0.045) CONCLUSION: The study shows that elevated levels of hs-CRP can be utilized for cardiovascular risk stratification and prognostication among patients with acute myocardial infarction.