Observation unit impact on ED admission for asthma

Area of Science:

• Emergency Medicine
• Health Services Research

Background:

• Observation units (OUs) in emergency departments (EDs) are utilized to manage patients who require further assessment but not necessarily inpatient admission.
• The cost-effectiveness of OUs, particularly for conditions like asthma, requires further investigation.

Purpose of the Study:

• To evaluate whether the implementation of an OU in an urban university county hospital's ED led to monetary savings by reducing the hospital admission rate for acute asthma patients.

Main Methods:

• A retrospective comparative cohort study was conducted over 22 months, comparing asthma patients treated before (n=834) and after (n=390) the OU's opening.
• Statistical analyses included Fisher's exact test, binomial distribution for admission rates, and the Mann-Whitney test for median charges.

Main Results:

• The overall hospital admission rate for asthma patients showed a non-significant decrease of 2.7% (P = .25) after OU implementation.
• Direct hospital admissions decreased by 5.3% (P = .01), and direct ED discharges decreased by 6.7% (P = .005).
• No demonstrable cost savings were observed from the OU's implementation.

Conclusions:

• The use of an OU for acute asthma patients in the ED resulted in lower initial discharge rates but did not appreciably reduce eventual hospital admissions.
• The study did not support the hypothesis that OUs for asthma patients lead to monetary savings through reduced hospital admission rates.