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[Hospital resources and myocardial infarction case fatality. The IBERICA study]
Eva E Alvarez-León1, Roberto Elosua, Alberto Zamora
1Unitat de Lípids i Epidemiologia Cardiovascular, IMIM, Barcelona, España.
Insights
Coronary care unit (CCU) admission significantly lowers early death risk for myocardial infarction (MI) patients. Basic hospitals without CCUs are linked to higher long-term mortality, even for survivors.
Area of Science:
- Cardiology
- Public Health
- Health Services Research
Background:
- Myocardial infarction (MI) management and outcomes are influenced by hospital care settings.
- The role of coronary care units (CCUs) in reducing MI mortality requires ongoing investigation.
- Hospital resource availability, including CCUs and catheterization labs, may impact patient survival.
Purpose of the Study:
- To determine the proportion of myocardial infarction (MI) patients not admitted to a coronary care unit (CCU).
- To identify factors associated with CCU admission for MI patients.
- To assess the impact of CCU admission and hospital capabilities on 28-day case fatality.
Main Methods:
- A population-based registry of MI cases (ages 25-74) from 1996-1998 was analyzed.
- Data included demographic and clinical characteristics, management, clinical course, and 28-day survival.
- Hospitals were categorized based on CCU and catheterization laboratory availability (advanced, intermediate, basic).
Main Results:
- 11.3% of 9046 MI patients were not admitted to a CCU.
- Factors associated with CCU admission included age, smoking, MI type, Killip score, and arrival delay.
- CCU admission was linked to significantly lower 24-hour case fatality (4.2% vs. 23.5%), independent of other factors.
- Patients surviving 24 hours but admitted to basic hospitals had higher 28-day case fatality (17.3% vs. 7.8%).
Conclusions:
- CCU admission is independently associated with reduced early mortality following myocardial infarction.
- Admission to hospitals lacking CCU facilities (basic hospitals) is associated with increased 28-day case fatality.
- Timely CCU admission and appropriate hospital resources are crucial for improving MI patient outcomes.
Introduction And Objectives:
To determine the proportion of patients with myocardial infarction (MI) not admitted to a coronary care unit (CCU), the variables associated with admission into a CCU, and whether admission to a CCU, and the availability of coronary angiography in the same hospital, were associated with 28-day case fatality.
Patients And Method:
Population-based registry of MI in patients 25 to 74 years of age, admitted during 1996-1998. Demographic and clinical characteristics were recorded, as well as management, clinical course and survival after 28 days. Hospitals were classified according to the availability of a CCU and catheterization laboratory (advanced hospital), CCU only (intermediate hospital) or neither (basic hospital). Admission to the CCU was also recorded.
Results:
In all, 9046 cases of MI were recorded; in 11.3% the patient was not admitted to a CCU. Age, smoking (OR=1.33; 95% CI, 1.08-1.64), non-Q MI (OR=0.62; 95% CI, 0.49-0.78) or undetermined location of MI (OR=0.34; 95% CI, 0.23-0.50), Killip 4 score on admission (OR=0.63; 95% CI, 0.40-1.00) and delay in arrival at the hospital >6 h were associated with CCU admission. Patients admitted to a CCU showed a lower case fatality in the first 24 h (4.2% vs 23.5%), which was independent of comorbidity, severity and treatment. The 24-hour survivors admitted to a basic hospital had higher case fatality (17.3% vs 7.8%) than other groups, which was related to differences in treatment.
Conclusions:
CCU admission is associated with a lower case fatality in the first 24 h. Admission to a basic hospital is associated with a higher 28-day case fatality even in patients who survive 24 h.
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