What type of study is this?

This is a Case Report study (also classified as: Observational).

September 10, 2025JACC Case ReportsOpen Access

Large Patent Ductus Arteriosus in an Adult With Severe Pulmonary Hypertension and Polycythemia

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Case study reports large patent ductus arteriosus with severe pulmonary hypertension and polycythemia, highlighting challenges in management.

Large patent ductus arteriosus led to severe pulmonary hypertension and polycythemia vera requiring phlebotomy.
The patient exhibited complications including Eisenmenger syndrome, posing serious health risks.
Computed tomography was essential for diagnosis, as echocardiography failed to visualize the PDA.
Management focused on medical treatment due to contraindications for closure in the presence of severe pulmonary hypertension.

Langenfeld et al. (2025) studied this question.

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Case study reports large patent ductus arteriosus with severe pulmonary hypertension and polycythemia, highlighting challenges in management.