Epidemiology Commons^™

Ten-Year (2001-2011) Trends In The Incidence Rates And Short-Term Outcomes Of Early Versus Late Onset Cardiogenic Shock After Hospitalization For Acute Myocardial Infarction, Hoa L. Nguyen, Jorge L. Yarzebski, Darleen M. Lessard, Joel M. Gore, David D. Mcmanus, Robert J. Goldberg

Jorge L. Yarzebski

BACKGROUND: Cardiogenic shock (CS) is a serious complication of acute myocardial infarction, and the time of onset of CS has a potential role in influencing its prognosis. Limited contemporary data exist on this complication, however, especially from a population-based perspective. Our study objectives were to describe decade-long trends in the incidence, in-hospital mortality, and factors associated with the development of CS in 3 temporal contexts: (1) before hospital arrival for acute myocardial infarction (prehospital CS); (2) within 24 hours of hospitalization (early CS); and (3) > /=24 hours after hospitalization (late CS). METHODS AND RESULTS: The study population consisted of 5782 …

Decade-Long Trends In The Timeliness Of Receipt Of A Primary Percutaneous Coronary Intervention, Han-Yang Chen, Joel M. Gore, Kate L. Lapane, Jorge L. Yarzebski, Sharina D. Person, Catarina I. Kiefe, Robert J. Goldberg

Jorge L. Yarzebski

OBJECTIVES: The purpose of this study was to examine decade-long trends (2001-2011) in, and factors associated with, door-to-balloon time within 90 minutes of hospital presentation among patients hospitalized with ST-segment elevation myocardial infarction (STEMI) who received a primary percutaneous coronary intervention (PCI). METHODS: Residents of central Massachusetts hospitalized with STEMI who received a primary PCI at two major PCI-capable medical centers in central Massachusetts on a biennial basis between 2001 and 2011 comprised the study population (n=629). Multivariable regression analyses were used to examine factors associated with failing to receive a primary PCI within 90 minutes after emergency department (ED) …

Decade Long Trends (2001-2011) In Duration Of Pre-Hospital Delay Among Elderly Patients Hospitalized For An Acute Myocardial Infarction, Raghavendra Makam, Nathaniel Erskine, Jorge L. Yarzebski, Darleen M. Lessard, Jason Lau, Jeroan J. Allison, Joel M. Gore, Jerry H. Gurwitz, David D. Mcmanus, Robert J. Goldberg

Jorge L. Yarzebski

BACKGROUND: Early intervention with medical and/or coronary revascularization treatment approaches remains the cornerstone of the management of patients hospitalized with acute myocardial infarction (AMI). However, several patient groups, especially the elderly, are known to delay seeking prompt medical care after onset of AMI-associated symptoms. Current trends, and factors associated with prolonged prehospital delay among elderly patients hospitalized with AMI, are incompletely understood.

METHODS AND RESULTS: Data from a population-based study of patients hospitalized at all 11 medical centers in central Massachusetts with a confirmed AMI on a biennial basis between 2001 and 2011 were analyzed. Information about duration of prehospital …

Decade-Long Trends (1999-2009) In The Characteristics, Management, And Hospital Outcomes Of Patients Hospitalized With Acute Myocardial Infarction With Prior Diabetes And Chronic Kidney Disease, Mayra Tisminetzky, David D. Mcmanus, Alon Dor, Ruben Miozzo, Jorge L. Yarzebski, Joel M. Gore, Robert J. Goldberg

Jorge L. Yarzebski

BACKGROUND: Despite the increasing magnitude and impact, there are limited data available on the clinical management and in-hospital outcomes of patients who have diabetes mellitus (DM) and chronic kidney disease (CKD) at the time of hospitalization for acute myocardial infarction (AMI). The objectives of our population-based observational study in residents of central Massachusetts were to describe decade-long trends (1999-2009) in the characteristics, in-hospital management, and hospital outcomes of AMI patients with and without these comorbidities.

METHODS: We reviewed the medical records of 6,018 persons who were hospitalized for AMI on a biennial basis between 1999 and 2009 at all eleven …

Magnitude Of And Prognostic Factors Associated With 1-Year Mortality After Hospital Discharge For Acute Decompensated Heart Failure Based On Ejection Fraction Findings, Andrew H. Coles, Mayra Tisminetzky, Jorge L. Yarzebski, Darleen M. Lessard, Joel M. Gore, Chad E. Darling, Robert J. Goldberg

Jorge L. Yarzebski

BACKGROUND: Limited data exist about the magnitude of and the factors associated with prognosis within 1 year for patients discharged from the hospital after acute decompensated heart failure. Data are particularly limited from the more generalizable perspective of a population-based investigation and should be further stratified according to currently recommended ejection fraction (EF) findings.

METHODS AND RESULTS: The hospital medical records of residents of the Worcester, Massachusetts, metropolitan area who were discharged after acute decompensated heart failure from all 11 medical centers in central Massachusetts during 1995, 2000, 2002, 2004, and 2006 were reviewed. The average age of the 4025 …

Decade-Long Trends In 30-Day Rehospitalization Rates After Acute Myocardial Infarction, Han-Yang Chen, Mayra Tisminetzky, Kate L. Lapane, Jorge L. Yarzebski, Sharina D. Person, Catarina I. Kiefe, Joel Gore, Robert J. Goldberg

Jorge L. Yarzebski

BACKGROUND: There are limited data available describing relatively contemporary trends in 30-day rehospitalizations among patients who survive hospitalization after an acute myocardial infarction (AMI) in the community setting. We examined decade-long (2001-2011) trends in, and factors associated with, 30-day rehospitalizations in patients discharged from 3 central Massachusetts hospitals after AMI. METHODS AND RESULTS: Residents of the Worcester, MA, metropolitan area discharged after AMI from 3 central Massachusetts hospitals on a biennial basis between 2001 and 2011 comprised the study population (N=4810). Logistic regression analyses were used to examine the association between selected factors and 30-day rehospitalizations. The average age of …

Elevated Serum Glucose Levels And Survival After Acute Heart Failure: A Population-Based Perspective, Benjamin Helfand, Nicholas Maselli, Darleen Lessard, Jorge Yarzebski, Joel Gore, David Mcmanus, Jane Saczynski, Robert Goldberg

Jorge L. Yarzebski

BACKGROUND: Limited data are available about the characteristics, treatment and survival in patients without diabetes mellitus (DM), previously diagnosed DM and patients with hyperglycaemia who present with acute decompensated heart failure (ADHF). Our objectives were to examine differences in these endpoints in patients hospitalized with ADHF. METHODS: Patients hospitalized with ADHF during 1995, 2000, 2002 and 2004 comprised the study population. RESULTS: A total of 5428 non-diabetic patients were hospitalized with ADHF, 3807 with diagnosed DM and 513 with admission hyperglycaemia. Patients with admission hyperglycaemia experienced the highest in-hospital death rates (9.9%) compared to those with diagnosed DM (6.5%) and …

Thirty Day Hospital Re-Admissions In Patients With Non St-Segment Elevation Acute Myocardial Infarction, Mayra Tisminetzky, David Mcmanus, Nathaniel Erskine, Jane Saczynski, Jorge Yarzebski, Edgard Granillo, Joel Gore, Robert Goldberg

Jorge L. Yarzebski

BACKGROUND: Limited data exist about relatively recent trends in the magnitude and characteristics of patients who are rehospitalized shortly after admission for a non ST-segment elevation acute myocardial infarction (NSTEMI). This observational study describes decade-long trends (1999-2009) in the magnitude and characteristics of patients readmitted to the hospital within 30 days of hospitalization for an incident (initial) episode of NSTEMI.

METHODS: We reviewed the medical records of 2,249 residents of the Worcester (MA) metropolitan area who were hospitalized for an initial NSTEMI in 6 biennial periods between 1999 and 2009 at 3 central MA medical centers.

RESULTS: The average age …

30-Year Trends In Patient Characteristics, Treatment Practices, And Long-Term Outcomes Of Adults Aged 35 To 54 Years Hospitalized With Acute Myocardial Infarction, Mayra Tisminetzky, David Mcmanus, Joel Gore, Jorge Yarzebski, Andrew Coles, Darleen Lessard, Robert Goldberg

Jorge L. Yarzebski

Much of our knowledge about the characteristics, clinical management, and postdischarge outcomes of acute myocardial infarction (AMI) is derived from clinical studies in middle-aged and older subjects with little contemporary information available about the descriptive epidemiology of AMI in relatively young men and women. The objectives of our population-based study were to describe >3-decade-long trends in the clinical features, treatment practices, and long-term outcomes of young adults aged 35 to 54 years discharged from the hospital after AMI. The study population consisted of 2,142 residents of the Worcester (Massachusetts) metropolitan area who were hospitalized with AMI at all central Massachusetts …

Decade-Long Trends In The Characteristics, Management And Hospital Outcomes Of Diabetic Patients With St-Segment Elevation Myocardial Infarction, Mayra Tisminetzky, Samuel Joffe, David Mcmanus, Chad Darling, Joel Gore, Jorge Yarzebski, Darleen Lessard, Robert Goldberg

Jorge L. Yarzebski

PURPOSE: Our objectives were to describe recent trends in the characteristics and in-hospital outcomes in diabetic as compared with non-diabetic patients hospitalized with ST-segment elevation myocardial infarction (STEMI).

METHODS: We reviewed the medical records of 2537 persons with (n = 684) and without (n = 1853) a history of diabetes who were hospitalized for STEMI between 1997 and 2009 at 11 medical centres in Central Massachusetts.

RESULTS: Diabetic patients were more likely to be older, female and to have a higher prevalence of previously diagnosed comorbidities. Diabetic patients were more likely to have developed important in-hospital complications and to have …

The Impact Of Cardiac And Noncardiac Comorbidities On The Short-Term Outcomes Of Patients Hospitalized With Acute Myocardial Infarction: A Population-Based Perspective, Han-Yang Chen, Jane S. Saczynski, David D. Mcmanus, Darleen M. Lessard, Jorge L. Yarzebski, Kate L. Lapane, Joel M. Gore, Robert J. Goldberg

Jorge L. Yarzebski

OBJECTIVES: The objectives of our large observational study were to describe the prevalence of cardiac and noncardiac comorbidities in a community-based population of patients hospitalized with acute myocardial infarction (AMI) at all medical centers in central Massachusetts, and to examine whether multiple comorbidities were associated with in-hospital death rates and hospital length of stay. METHODS: The study sample consisted of 2,972 patients hospitalized with AMI at all eleven greater Worcester medical centers in central Massachusetts during the three study years of 2003, 2005, and 2007. RESULTS: The average age of this hospitalized population was 71 years, 55% were men, 93% …

Recent Trends In Post-Discharge Mortality Among Patients With An Initial Acute Myocardial Infarction, Andrew Coles, Kimberly Fisher, Chad Darling, David Mcmanus, Oscar Maitas, Jorge Yarzebski, Joel Gore, Darleen Lessard, Robert Goldberg

Jorge L. Yarzebski

The objectives of this study were to describe contemporary postdischarge death rates of patients hospitalized at all Worcester, Massachusetts, hospitals after initial acute myocardial infarctions (AMIs) and to examine factors associated with a poor prognosis. The medical records of patients discharged from 11 central Massachusetts medical centers after initial AMIs during 2001, 2003, 2005, and 2007 were reviewed, identifying 2,452 patients. This population was composed of predominantly older patients, men (58%), and whites. Overall, the 3-month, 1-year, and 2-year all-cause death rates were 8.9%, 16.4%, and 23.4%, respectively. Over time, reductions in postdischarge mortality were observed in crude as well …

30-Year Trends In Heart Failure In Patients Hospitalized With Acute Myocardial Infarction, David Mcmanus, Marcello Chinali, Jane Saczynski, Joel Gore, Jorge Yarzebski, Frederick Spencer, Darleen Lessard, Robert Goldberg

Jorge L. Yarzebski

Despite significant advances in its treatment, acute myocardial infarction (AMI) remains an important cause of heart failure (HF). Contemporary data remain lacking, however, describing long-term trends in incidence rates, demographic and clinical profiles, and outcomes of patients who develop HF as a complication of AMI. Our study sample consisted of 11,061 residents of the Worcester (Massachusetts) metropolitan area hospitalized with AMI at all greater Worcester hospitals in 15 annual study periods from 1975 to 2005. Overall, 32.4% of patients (n = 3,582) with AMI developed new-onset HF during their acute hospitalization. Patients who developed HF were generally older, more likely …

Recent Trends In The Incidence, Treatment, And Outcomes Of Patients With Stemi And Nstemi, David Mcmanus, Joel Gore, Jorge Yarzebski, Frederick Spencer, Darleen Lessard, Robert Goldberg

Jorge L. Yarzebski

BACKGROUND: despite the widespread use of electrocardiographic changes to characterize patients presenting with acute myocardial infarction, little is known about recent trends in the incidence rates, treatment, and outcomes of patients admitted for acute myocardial infarction further classified according to the presence of ST-segment elevation. The objectives of this population-based study were to examine recent trends in the incidence and death rates associated with the 2 major types of acute myocardial infarction in residents of a large central Massachusetts metropolitan area. METHODS: We reviewed the medical records of 5383 residents of the Worcester (MA) metropolitan area hospitalized for either ST-segment …

Declining Length Of Stay For Patients Hospitalized With Ami: Impact On Mortality And Readmissions, Jane Saczynski, Darleen Lessard, Frederick Spencer, Jerry Gurwitz, Joel Gore, Jorge Yarzebski, Robert Goldberg

Jorge L. Yarzebski

BACKGROUND: Length of hospital stay after acute myocardial infarction decreased significantly in the 1980s and 1990s. Whether length of stay has continued to decrease during the 2000s, and the impact of decreasing length of stay on rehospitalization and mortality, is unclear. We describe decade-long (1995-2005) trends in length of stay after acute myocardial infarction, and examine whether declining length of stay has impacted early rehospitalization and postdischarge mortality in a population-based sample of hospitalized patients.

METHODS: The study sample consisted of 4184 patients hospitalized with acute myocardial infarction in a central New England metropolitan area during 6 annual periods (1995, …

Management And Outcomes Of Renal Disease And Acute Myocardial Infarction, Paul Santolucito, Dennis Tighe, David Mcmanus, Jorge Yarzebski, Darleen Lessard, Joel Gore, Robert Goldberg

Jorge L. Yarzebski

BACKGROUND: Contemporary trends in the management and outcomes of chronic kidney disease patients who develop an acute myocardial infarction have not been adequately described, particularly from the more generalizable perspective of a population-based investigation. METHODS: The study population consisted of 6219 residents of the Worcester, Massachusetts, metropolitan area who were hospitalized with acute myocardial infarction in 6 annual periods between 1995 and 2005. Patients were categorized as having preserved kidney function (n=3154), mild to moderate chronic kidney disease (n=2313), or severe chronic kidney disease (n=752) at the time of hospital admission. RESULTS: Patients with chronic kidney disease were more likely …

Body Mass Index, Treatment Practices, And Mortality In Patients With Acute Heart Failure, Timothy Fitzgibbons, Olga Hardy, Darleen Lessard, Joel Gore, Jorge Yarzebski, Robert Goldberg

Jorge L. Yarzebski

OBJECTIVES: Obesity is associated with an increased risk of heart failure (HF). Among patients presenting with acute HF, however, differences in clinical characteristics, treatment regimens, and short-term prognosis of varying weights are largely unknown, particularly from a broader population-based perspective. METHODS: A total of 3722 patients admitted with acute HF to 11 greater Worcester (Massachusetts, USA) hospitals during 1995 and 2000 were categorized as being lean (n = 216), normal weight (n = 1465), overweight (n = 1007), or obese (n = 1034) at the time of hospitalization. RESULTS: Obese patients with decompensated HF were significantly younger (mean age = …

Multidecade-Long Trends (1986-2005) In The Utilization Of Coronary Reperfusion And Revascularization Treatment Strategies In Patients Hospitalized With Acute Myocardial Infarction: A Community-Wide Perspective, Jared Wasser, Robert Goldberg, Frederick Spencer, Jorge Yarzebski, Joel Gore

Jorge L. Yarzebski

OBJECTIVES: The objectives of our community-wide investigation were to describe multidecade-long trends (1986-2005) in the utilization of thrombolytic therapy, percutaneous coronary interventions, and coronary artery bypass graft surgery in patients hospitalized with acute myocardial infarction (AMI). METHODS: The study sample consisted of 9422 greater Worcester (MA) residents hospitalized with confirmed AMI at all metropolitan Worcester medical centers in 11 annual periods between 1986 and 2005. RESULTS: Increases in the utilization of percutaneous coronary interventions were observed between 1986 (2.0%) and 2005 (50.7%) with the most rapid increases beginning in the late 1990s. Utilization of coronary artery bypass graft surgery during …

Long-Term Trends In The Use Of Coronary Reperfusion Strategies In Acute Myocardial Infarction: A Community-Wide Perspective, Robert Goldberg, Frederick Spencer, Joseph Okolo, Darleen Lessard, Jorge Yarzebski, Joel Gore

Jorge L. Yarzebski

BACKGROUND: The objectives of our study were to examine long-term (1986-2003) trends in the use of percutaneous coronary interventions (PCI) and thrombolytic therapy in the management of patients hospitalized with acute myocardial infarction (AMI) while our secondary study goal was to examine factors associated with use of these coronary reperfusion strategies. While there have been considerable changes in the management of patients hospitalized with AMI over time, limited contemporary data are available about changing trends in the use of different coronary reperfusion strategies, particularly from the more generalizable perspective of a population-based investigation. METHODS: The study sample consisted of 9,422 …

Use Of Do-Not-Resuscitate Orders In Patients With Kidney Disease Hospitalized With Acute Myocardial Infarction, Joline Chen, Jonathan Sosnov, Darleen Lessard, Jorge Yarzebski, Joel Gore, Robert Goldberg

Jorge L. Yarzebski

BACKGROUND: Patients with kidney disease are at increased risk for adverse health outcomes in comparison to patients without kidney disease. Therefore, patients with kidney disease may have greater use of do-not-resuscitate (DNR) orders than patients without kidney disease in the setting of an acute illness. We examined the association between advanced kidney disease and use of DNR orders in patients admitted with an acute myocardial infarction (AMI) to all greater Worcester, MA, hospitals as part of an epidemiological study.

METHODS: Use of DNR orders in 4,033 Worcester residents hospitalized with AMI at 11 greater Worcester medical centers during 1997, 1999, …

Treatment Practices And Outcomes Of Patients With Established Peripheral Arterial Disease Hospitalized With Acute Myocardial Infarction In A Community Setting, Frederick Spencer, Darleen Lessard, Chyke Doubeni, Jorge Yarzebski, Joel Gore, Robert Goldberg

Jorge L. Yarzebski

BACKGROUND: There are little contemporary data available describing the hospital and long-term outcomes of patients with peripheral arterial disease (PAD) who are hospitalized with acute myocardial infarction (AMI). The objectives of our population-based study were to examine the hospital and long-term outcomes, as well as the use of different treatment practices, among patients with established PAD who were hospitalized with AMI. METHODS: The study sample consisted of 4480 patients hospitalized with AMI at all Worcester, Mass, medical centers in 4 alternate years between 1997 and 2003. RESULTS: Among the metropolitan Worcester residents hospitalized with AMI, 13.5% had a history of …

Excess Body Weight, Clinical Profile, Management Practices, And Hospital Prognosis In Men And Women After Acute Myocardial Infarction, Robert Goldberg, Jiang Cui, Barbara Olendzki, Frederick Spencer, Jorge Yarzebski, Darleen Lessard, Joel Gore

Jorge L. Yarzebski

BACKGROUND: Excess body weight is increasingly being recognized as a major health problem in American men and women. It is unclear, however, whether body weight is associated with the demographic and clinical profile, treatment of, and hospital prognosis after acute myocardial infarction (AMI).

METHODS: Nonconcurrent prospective epidemiologic investigation of Worcester (Massachusetts) metropolitan residents hospitalized at all 11 greater Worcester medical centers with validated AMI in 1997, 1999, 2001, and 2003.

RESULTS: A total of 2008 men and 1505 women were hospitalized with confirmed AMI during the 4 study periods. Approximately 41% of men and 29% of women were classified as …