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Vohra, Adam S.; Olonoff, Danielle A.; Ip, Ada; Kirtane, Ajay J.; Steinberg, Zachary; Horn, Evelyn; Krishnan, Udhay; Reisman, Mark; Bergman, Geoffrey; Wong, Shing‐Chiu; Feldman, Dmitriy N.; Kim, Luke K.; Singh, Harsimran S.
Pulmonary circulation, April 2024, 2024-Apr, 2024-04-00, 20240401, 2024-04-01, Volume: 14, Issue: 2Journal Article
Chronic thromboembolic pulmonary hypertension (CTEPH) is a sequela of a pulmonary embolus that occurs in approximately 1%−3% of patients. Pulmonary thromboendoarterectomy (PTE) can be a curative procedure, but balloon pulmonary angioplasty (BPA) has emerged as an option for poor surgical candidates. We used the National Inpatient Sample to query patients who underwent PTE or BPA between 2012 and 2019 with CTEPH. The primary outcome was a composite of in‐hospital mortality, myocardial infarction, stroke, tracheostomy, and prolonged mechanical ventilation. Outcomes were compared between low‐ and high‐volume centers, defined as 5 and 10 procedures per year for BPA and PTE, respectively. During our study period, 870 BPA and 2395 PTE were performed. There was a 328% relative increase in the number of PTE performed during the study period. Adverse events for BPA were rare. There was an increase in the primary composite outcome for low‐volume centers compared to high‐volume centers for PTE (24.4% vs. 12.1%, p = 0.003). Patients with hospitalizations for PTE in low‐volume centers were more likely to have prolonged mechanical ventilation (20.0%% vs. 7.2%, p < 0.001) and tracheostomy (7.8% vs. 2.6%, p = 0.017). In summary, PTE rates have been rising over the past 10 years, while BPA rates have remained stable. While adverse outcomes are rare for BPA, patients with hospitalizations at low‐volume centers for PTE were more likely to have adverse outcomes. For patients undergoing treatment of CTEPH with BPA or PTE, referral to high‐volume centers with multidisciplinary teams should be encouraged for optimal outcomes.
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