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Higher hospital cardiac capability tiers associated with lower mortality in cardiogenic shock hospitalizationsDoes where you get emergency heart care matter for your survival in cardiogenic shock?

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Key Takeaway
Consider regionalized referral for cardiogenic shock, but recognize observational limitations.

A national observational review analyzed 1,177,180 cardiogenic shock hospitalizations from the National Inpatient Sample (2016-2022). The study examined the association between hierarchical hospital cardiac capability tiers (Tier 1 non-PCI hospitals to Tier 5 transplant/LVAD centers) and in-hospital mortality. Crude mortality declined stepwise from 64.5% at Tier 1 hospitals to 36.5% at Tier 5 centers.

After adjustment, higher hospital tiers were independently associated with significantly lower mortality compared to Tier 1 non-PCI hospitals. Odds ratios were: Tier 2 OR 0.43 (95% CI 0.38-0.48), Tier 3 OR 0.37 (0.32-0.43), Tier 4 OR 0.33 (0.30-0.38), and Tier 5 OR 0.35 (0.31-0.40). Transfer-in status was associated with increased mortality overall (OR 1.39, 95% CI 1.33-1.46), but this association was attenuated at cardiac surgical and transplant/LVAD centers.

No specific safety or tolerability data were reported. A key limitation is that the association between institutional cardiac capability and outcomes, particularly among transferred patients and after accounting for clinical instability, remains incompletely defined. The observational nature of the data precludes causal conclusions.

These findings provide epidemiological support for regionalized hub-and-spoke systems with early referral to high-capability centers for cardiogenic shock. However, clinicians should interpret these associations cautiously, recognizing that unmeasured confounding and patient selection factors may influence these outcomes.

Imagine facing a life-threatening heart failure called cardiogenic shock. You are admitted to a hospital, but the level of care available there might change your chances of survival. A massive review looked at over 1.1 million hospitalizations across the United States between 2016 and 2022. The data comes from a national database that tracks inpatient care. The goal was simple: does the capability of the hospital affect who lives and who does not?

The findings were clear. Hospitals with higher cardiac capability, such as those that can perform transplants or implant LVADs, had much lower death rates. In the most advanced centers, the death rate was 36.5%. In non-PCI hospitals, it was 64.5%. Even after accounting for how sick patients were, being in a higher-tier hospital was linked to better survival. This suggests that having the right tools and specialists makes a real difference.

But there is a complex reality. Patients who were transferred from other hospitals to these advanced centers had higher death rates overall. This is a known risk in emergency medicine. However, the study found that the most advanced centers helped lower this specific risk. The link between hospital capability and survival is strong, but experts say we still do not fully understand how this works for transferred patients or those who are very unstable.

This research supports a system where patients are referred early to specialized hubs. It shows that where you get care matters, but the journey to get there is also part of the story. While the connection is strong, we must be careful not to assume that moving to a better hospital guarantees safety for every single patient.

What this means for you:
Higher-capability hospitals are linked to lower death rates in cardiogenic shock, but transferred patients face higher risks that advanced centers help reduce.

Study Details

EvidenceLevel 5
PublishedApr 2026
View Original Abstract ↓
Background: Cardiogenic shock (CS) remains associated with high short-term mortality despite contemporary advances in care. The association between institutional cardiac capability and outcomes?particularly among transferred patients and after accounting for clinical instability?remains incompletely defined. Objectives: To evaluate the association between hierarchical hospital cardiac capability and in-hospital mortality using a latent measure of acute physiologic severity. Methods: Using the National Inpatient Sample (2016?2022), hospitals were classified into five hierarchical tiers ranging from non-PCI (Tier 1) to heart transplant/durable LVAD centers (Tier 5). Generalized structural equation modeling (GSEM) assessed the relationship between hospital tier and mortality. A latent "Acute Severity" construct?comprising cardiac arrest, acute kidney and liver injury, and mechanical ventilation?was incorporated to model the effects of clinical instability Results: Among an estimated 1,177,180 CS hospitalizations, most occurred at cardiac surgical and transplant/LVAD centers. Crude mortality declined stepwise from non-PCI hospitals (64.5%) to transplant/LVAD centers (36.5%). After adjustment, higher hospital tier was independently associated with lower mortality (Tier 2 OR 0.43 [95% CI 0.38?0.48]; Tier 3 OR 0.37 [0.32?0.43]; Tier 4 OR 0.33 [0.30?0.38]; Tier 5 OR 0.35 [0.31?0.40]). Although transfer-in status was associated with increased mortality (OR 1.39 [1.33?1.46]), this association was attenuated at cardiac surgical and transplant/LVAD centers, consistent with a mitigation of transfer associated risk. Conclusions: Higher hospital cardiac capability is independently associated with lower mortality in CS. Advanced centers are associated with mitigation transfer-associated risk, supporting regionalized hub-and-spoke systems with early referral to high-capability centers.
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