Stroke Outcomes

The performance measures in the tables below were developed by the Joint Commission in collaboration with the American Heart Association/American Stroke Association (AHA/ASA) and show how Michigan Medicine compares against state and national benchmarks as well as American Heart Association recommendations.

Comparison of Median Time to Give tPA Treatment

Measure American Heart Association Goal Michigan Medicine

National Benchmark 2022

Michigan Benchmark 2022
Percentage of eligible patients treated within 60 minutes of arrival 85% 95% 86.4% 84.8%
Percentage of eligible patients treated within 45 minutes of arrival 75% 93.3% 65.0% 60.8%
Percentage of eligible patients treated within 30 minutes of arrival 50% 75.0% 31.5% 22.8%


Sixty percent of eligible patients who arrived within 6 hours of their symptom onset were treated with mechanical thrombectomy as fast or faster than the American Heart Association’s Arrival-to-First-Pass goals. The American Heart Association’s goal is 50% of eligible patients.

More Information

For more information about types of stroke and its effects and treatments, visit our Stroke page. For more information about the U-M Comprehensive Stroke Center, visit the About the U-M Comprehensive Stroke Center page.

Next Steps

For Patients: If you think you or a loved one might be having a stroke, call 911. If you have had a stroke in the past or think you might be at risk for one call us at 1-888-287-1082 to make an appointment for a consultation. Visit our Stroke Patient Resources page for more information about stroke, including videos and care guides.

For Physicians: If you are a physician and want to refer a patient, call M-LINE at 800-962-3555.