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A study of 590,282 California heart attack hospitalizations found that opening a PCI-capable facility near communities without timely access was associated with lower 30-day and one-year mortality. In communities that already had access within a 30-minute drive, another facility did not significantly change mortality.
A new California study of 590,282 heart attack hospitalizations found that communities gained survival benefits when a hospital able to perform percutaneous coronary intervention (PCI) opened within a 30-minute drive where timely access had previously been lacking. In areas that already had such access, another PCI-capable facility was associated with small increases in treatment but no significant change in mortality, the researchers reported in JAMA Network Open.
Researchers examined hospitalizations for acute heart attacks in California from 2011 through 2022, comparing outcomes after a PCI-capable facility opened within a 30-minute drive. PCI is a procedure that restores blood flow through blocked arteries. Providing it requires hospitals to invest in specialized equipment, facilities and staff.
In communities without prior timely access, a new facility was associated with a 53% relative increase in admissions to a PCI-capable hospital and a 16% increase in patients receiving PCI. The study also reported a 20% decline in 30-day mortality and a 15% decline in one-year mortality in those communities.
The pattern differed in places that already had a PCI-capable hospital within 30 minutes. Opening another was associated with a 2% increase in admissions to such hospitals and a 3% increase in PCI use, but researchers found no significant mortality change. These figures describe associations in the study; they do not establish that a facility opening alone caused every observed outcome.
Where PCI Capacity Can Save Lives
The findings address a practical question for health systems and policymakers: where should costly specialized emergency services be placed? The results suggest that adding capacity may have different effects depending on existing access. A facility located near communities facing long travel times may connect more heart attack patients with PCI and coincide with improved survival, while duplicating nearby services may increase treatment modestly without a detectable mortality benefit.
The implications are relevant to decisions about hospital investment and regional emergency-care planning. The researchers said market demand, procedure volume and expected financial returns can shape where hospitals add services, and those incentives may not direct facilities to areas where they could produce the greatest population health benefit. The study does not set out a policy prescription, but it provides evidence that location and existing access matter when evaluating new capacity.
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California’s Rural Access Gap
The access difference was especially marked for rural patients in the study. Of 52,756 heart attack patients from rural communities, 81% lived in places without a PCI-capable facility within a 30-minute drive at the beginning of the study period. That figure describes the rural patients included in this California analysis, not all rural residents or patients nationwide.
The report builds on earlier research by study authors examining changes in PCI activity after facilities opened. That previous study found a 7.5% increase in the number of procedures performed in a community; the increase was nearly 20% where timely access had been absent, compared with about 8% where PCI was already available. The new study asked whether increased procedure use corresponded with better clinical outcomes, and reported that the answer varied by access before the opening.
The research was conducted by UC San Francisco investigators and published in JAMA Network Open. The journal citation identifies the paper as “Percutaneous Coronary Intervention Facility Access and Clinical Outcomes Among Patients With Acute Myocardial Infarction,” by Y.-C. Shen and R. Y. Hsia, with DOI 10.1001/jamanetworkopen.2026.38687.
“Americans tend to think more is better, but where you put these services really matters.”
— Renee Y. Hsia, MD, MSc, UCSF professor of emergency medicine and senior author
Limits of the Facility Comparison
The reported results show associations between facility openings, access and patient outcomes. The supplied study summary does not describe all methods used to account for differences between communities or other changes that may have occurred during the 2011–2022 period. It is therefore not possible from these findings alone to determine how much of the mortality change was caused by the new facility itself.
The summary also does not provide confidence intervals, detailed subgroup results beyond rural access, or estimates of construction and operating costs. It does not establish whether the same pattern would apply in other states, health systems or countries. The extent to which travel times, emergency transport and hospital staffing shaped individual outcomes is not specified in the material provided.
Implications for Future Planning
The study gives policymakers and hospital systems evidence to weigh alongside costs, staffing, local demand and emergency transport when considering new PCI services. Its results point to a need to assess who currently lacks timely access, rather than relying only on the expected volume of procedures at a proposed facility.
The supplied report does not announce a policy change or a further study deadline. Additional research could test whether the observed associations hold in other regions and examine how facility placement interacts with ambulance routing, transfer arrangements and the availability of specialized staff. For now, the study’s central finding is that the reported survival gains appeared in communities that lacked nearby PCI access, not in those that already had it.
Key Questions
What is PCI?
Percutaneous coronary intervention is a procedure used to restore blood flow through blocked arteries. The study examined access to hospitals equipped and staffed to perform it for heart attack patients.
What changed when a PCI-capable facility opened nearby?
In areas without prior access within a 30-minute drive, the opening was associated with increased admissions to PCI-capable hospitals and greater procedure use, along with lower 30-day and one-year mortality. In already served areas, treatment rose slightly and mortality did not change significantly.
How many heart attack hospitalizations did the study examine?
The researchers analyzed 590,282 California heart attack hospitalizations from 2011 to 2022.
Did the study prove that new facilities caused fewer deaths?
No. The reported findings are associations between facility openings and outcomes. The summary does not establish that the openings alone caused the mortality changes.
Why were rural communities highlighted?
Among 52,756 rural patients in the study, 81% lived without a PCI-capable facility within a 30-minute drive at the study’s beginning. This indicates a substantial access gap among the rural patients examined in California.
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