Abstract
Background
Limited data exist about relatively recent trends in the magnitude and characteristics
of patients who are re-hospitalized after hospital admission for an acute myocardial
infarction. This study examined trends in the frequency and sociodemographic and clinical
characteristics of patients readmitted to the hospital within 30 days after an initial
acute myocardial infarction.
Methods
We reviewed the medical records of 3116 individuals who were hospitalized for a validated
first acute myocardial infarction in 6 study periods between 2003 and 2015 at the
3 major medical centers in central Massachusetts.
Results
The median age of our population was 67 years, and 42% were women. The risk of being
readmitted to the hospital within 30 days after an initial acute myocardial infarction
increased slightly during the most recent study years after controlling for potentially
confounding factors. Overall, older adults and patients with previously diagnosed
atrial fibrillation, heart failure, diabetes, chronic kidney disease, stroke, and
peripheral vascular disease were at higher risk for being readmitted to the hospital
than respective comparison groups. For those hospitalized in the most recent study
years of 2011/2015, a higher risk of rehospitalization was associated with a previous
diagnosis of chronic kidney disease, peripheral vascular disease, the presence of
3 or more chronic conditions, and having developed atrial fibrillation or heart failure
during the patient's hospitalization for a first acute myocardial infarction.
Conclusions
We identified several groups at higher risk for hospital readmission in whom enhanced
surveillance efforts as well as tailored educational and treatment approaches remain
needed.
Keywords
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Article info
Publication history
Published online: April 14, 2021
Footnotes
Funding: This work was supported by the National Institute on Aging (grant numbers R33AG057806, R01AG062630 to JG and MT); and the National Heart, Lung, and Blood Institute (R01HL35434, U01HL105268) to RG.
Conflicts of Interest: The authors report no conflicts.
Authorship: Study concept and design: MT, RG, JHG; Acquisition of data: MT, DL, RG; Preparation of manuscript: MT, JM, RM, JHG, and RG; Critical revision of the manuscript: JHG, RG, JM, RM, HOA, BAB, JY and EG.
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