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The influence of risk status on guideline adherence for patients with non-ST-segment elevation acute coronary
Matthew T Roe1, Eric D Peterson, L Kristin Newby
1Duke Clinical Research Institute, Duke University Medical Center, Durham, NC 27705, USA. roe00001@mc.duke.edu
Insights
High-risk patients with non-ST-segment elevation acute coronary syndromes (NSTE ACS) often do not receive guideline-recommended treatments. This study highlights disparities in care for these vulnerable patients, indicating a need for improved quality improvement strategies.
Area of Science:
- Cardiology
- Clinical Medicine
- Health Services Research
Background:
- Practice guidelines recommend evidence-based therapies for high-risk patients with non-ST-segment elevation acute coronary syndromes (NSTE ACS).
- Guideline adherence for NSTE ACS treatment based on patient risk status has not been fully characterized.
Purpose of the Study:
- To assess adherence to NSTE ACS guidelines based on patient risk stratification.
- To identify potential disparities in care for high-risk NSTE ACS patients.
Main Methods:
- Analysis of inhospital treatments and outcomes for 77,760 NSTE ACS patients from the CRUSADE initiative (2001-2003).
- Evaluation of compliance with ACC/AHA guideline recommendations.
- Risk stratification using an adapted PURSUIT risk model to predict inhospital mortality.
Main Results:
- High-risk features (diabetes, renal insufficiency, heart failure, age ≥75) were associated with increased inhospital mortality.
- Use of guideline-recommended acute and discharge therapies, and invasive procedures was lower in high-risk patients.
- Patients identified as high-risk for mortality were less likely to receive guideline-recommended therapies compared to lower-risk patients.
Conclusions:
- Patients with NSTE ACS at the highest risk of mortality are less likely to receive guideline-recommended therapies and interventions.
- There is a need to refine guideline recommendations for high-risk NSTE ACS patients.
- Novel quality improvement strategies are required to address undertreatment in specific patient subgroups.
Background:
Practice guidelines for patients with non-ST-segment elevation (NSTE) acute coronary syndromes (ACS) recommend targeting evidence-based therapies for the highest-risk patients. We characterized guideline adherence for NSTE ACS by risk status.
Methods:
We analyzed inhospital treatments and outcomes for 77760 patients with NSTE ACS (ischemic ST-segment changes and/or positive cardiac markers) included in the CRUSADE initiative from January 2001 to September 2003 at 457 US hospitals. Compliance with the American College of Cardiology/American Heart Association Class guideline recommendations for NSTE ACS was evaluated in subgroups of eligible patients without listed contraindications at increased risk for mortality and among risk categories designated by an adapted version of the PURSUIT risk model designed to predict inhospital mortality.
Results:
Inhospital mortality was increased in patients with diabetes mellitus (5.8% vs 4.3%), renal insufficiency (10.0% vs 3.9%), signs of congestive heart failure on presentation (10.6% vs 3.1%), and age > or = 75 years (8.6% vs 2.7%), compared with patients without these features. Use of guideline-recommended acute medications, invasive cardiac procedures, and discharge medications and interventions was significantly lower in patients with these high-risk features. Patients designated as high-risk for inhospital mortality were less likely to be treated with guideline-recommended therapies compared with low-risk and moderate-risk patients.
Conclusions:
Patients with NSTE ACS with the highest risk of mortality are less likely to receive guideline-recommended therapies and interventions. These findings highlight the need to clarify guideline recommendations for high-risk patients and to develop novel quality improvement approaches that target undertreated subgroups of patients with NSTE ACS.
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