Prospective study of early discharge after acute myocardial infarction (SHORT)
M J van der Vlugt1, H Boersma, C M Leenders
1Rotterdam Heartcenter, location Thoraxcenter, University Hospital Rotterdam Dijkzigt, The Netherlands.
Insights
A new decision rule allows early discharge for low-risk myocardial infarction patients, safely reducing hospital stays. This method identifies patients suitable for discharge at 7 days without further testing.
Area of Science:
- Cardiology
- Clinical Medicine
- Public Health
Background:
- Myocardial infarction (MI) management traditionally involves prolonged hospitalization.
- Identifying low-risk MI patients for early discharge is crucial for optimizing healthcare resources and patient flow.
Purpose of the Study:
- To develop and validate a decision rule for early discharge of low-risk myocardial infarction patients.
- To identify patients eligible for discharge at 7 days post-MI without additional investigations.
Main Methods:
- A decision rule was developed using data from 647 MI patients and validated in 825 others.
- Daily event rates for major and minor cardiac complications were calculated.
- The rule utilized simple clinical variables for risk stratification.
Main Results:
- 44% of patients were free from major complications by day 7, qualifying for early discharge.
- In the validation group, 31% were discharged at day 7; no major adverse events occurred within 7 days post-discharge.
- The median hospital stay was reduced to 7 days from 10 days in the control group.
Conclusions:
- The early discharge decision rule is feasible, safe, and effectively reduces hospital stay for MI patients.
- It accurately classifies patients into high and low-risk groups, enabling timely discharge.
- The rule identifies a significant cohort of post-MI survivors at low risk for follow-up complications.
Aims:
To identify, without additional investigation, a large group of myocardial infarction patients at low risk who would qualify for early discharge.
Methods:
The decision rule was developed in 647 unselected patients with consecutively admitted myocardial infarction, and validated in 825 others. Daily event-rates were calculated for major (death, ventricular fibrillation, recurrent infarction, heart failure, advanced AV-block) and minor (unstable angina and rhythm-abnormalities) cardiac complications.
Results:
Patients free from major complications until day 7 (44% of all patients) were found to constitute a very low risk group and thus would qualify for discharge at day 7. Of the 39% of patients with an uncomplicated infarction (low risk) in the validation group, 31% were discharged at day 7, while 8% stayed longer because of non-cardiac co-morbidity, for social reasons or logistic problems. No major adverse event occurred within 7 days after hospital discharge and only 1.8% developed complications within 1 month. The median duration of hospital stay for all in-hospital survivors was 7 days compared to 10 days in the control group.
Conclusion:
Prospective application of the early discharge decision rule, based upon simple clinical variables and without the need for additional non-invasive and/or invasive tests, resulted in a significant reduction of hospital stay. The decision rule correctly classified patients into high and low risk groups and appeared feasible and safe. Its efficacy was demonstrated by its ability to identify a large group of post infarction survivors at low risk for complications during follow-up.
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