High mortality rates in conservatively managed patients with acute coronary syndrome
Erlend Aune1, Jøran Hjelmesaeth, Keith A A Fox
1Department of Cardiology, Vestfold Hospital, Tønsberg, Norway. erlend.aune@siv.no
Insights
This study found higher one-year mortality rates in acute coronary syndrome (ACS) patients, particularly ST-elevation myocardial infarction (STEMI) and Non-ST-elevation myocardial infarction (NSTEMI) groups, compared to typical registry data. Conservative management strategies may contribute to these outcomes.
Area of Science:
- Cardiology
- Clinical Research
- Public Health
Background:
- Revised diagnostic criteria for acute coronary syndrome (ACS) necessitate updated data on treatment and outcomes.
- Understanding the distinct outcomes for ST-elevation myocardial infarction (STEMI), Non-ST-elevation myocardial infarction (NSTEMI), and Unstable angina pectoris (UAP) is crucial.
Purpose of the Study:
- To analyze treatment patterns and one-year mortality rates across different categories of acute coronary syndrome (ACS).
- To compare outcomes in ACS patients with non-coronary chest pain and coronary heart disease without ACS.
Main Methods:
- A prospective study registered 755 consecutive patients admitted with suspected ACS.
- Patients were categorized into five groups: STEMI, NSTEMI, UAP, coronary heart disease (CHD) without ACS, and non-coronary chest pain.
- One-year all-cause mortality was tracked for each group.
Main Results:
- One-year mortality rates were 20% for STEMI, 32% for NSTEMI, 7% for UAP, 10% for CHD without ACS, and 3% for non-coronary chest pain.
- Immediate reperfusion therapy was given to 61% of STEMI patients (18:1 thrombolysis to primary PCI ratio).
- Only 3% of NSTEMI patients received PCI within two days.
Conclusions:
- The one-year mortality rate in this conservatively managed ACS population is significantly higher than reported in most registries and clinical trials.
- These findings highlight potential areas for improvement in ACS management and treatment strategies.
Objectives:
The revised diagnostic criteria for the acute coronary syndrome (ACS) have created the need for accurate and representative data on treatment and outcome for the three categories of ACS.
Design:
Consecutive patients admitted with a suspected ACS (n = 755) from February 1, 2003 to January 31, 2004 was registered and categorised into five diagnostic groups: 1) ST-elevation myocardial infarction (STEMI) (n = 126), 2) Non-ST-elevation myocardial infarction (NSTEMI) (n = 185), 3) Unstable angina pectoris (UAP) (n = 55), 4) Coronary heart disease (CHD) without ACS (n = 164) and 5) Non-coronary chest pain (n = 225).
Results:
All-cause one-year mortality rates were 20%, 32%, 7%, 10% and 3%, in patients with STEMI, NSTEMI, UAP, CHD without ACS and non-coronary chest pain, respectively. In patients with STEMI, 61% received immediate reperfusion therapy (ratio thrombolysis: primary PCI = 18:1). Only 3% of those with NSTEMI had PCI within two days.
Conclusion:
In this conservatively managed population of consecutive patients with ACS, the one-year mortality rate is significantly higher than seen in most registries and clinical trials.
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