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Patients hospitalized for diabetic ketoacidosis (DKA) who also have asthma or COPD are actually less likely to die in the hospital than those without lung disease, a large national study found. However, they do need more respiratory support like CPAP and BiPAP. Researchers suggest earlier care-seeking and more treatable DKA triggers may explain the paradox.
A large retrospective study of over 2.7 million adult DKA hospitalizations (2016–2023) found a counterintuitive result: patients with asthma or COPD had lower odds of in-hospital mortality compared to those without any pulmonary comorbidity. The findings were presented at the CHEST Annual Meeting in Phoenix.
Researchers theorize that patients with chronic lung disease may seek care earlier — recognizing breathing difficulty sooner — leading to DKA being caught at a less severe stage. Additionally, DKA in this group may be triggered by more treatable causes like pneumonia. Survivor bias (i.e., the sickest patients dying before admission) may also play a role.
That said, asthma and COPD patients showed significantly higher odds of needing CPAP and BiPAP, signaling a greater respiratory support burden during hospitalization.
By the Numbers:
Why it matters: Clinicians managing DKA patients with underlying lung disease should proactively monitor respiratory status and be prepared for early escalation to noninvasive ventilation — even if overall mortality risk appears lower in this group.
