Limited Accuracy of Administrative Data for the Identification and Classification of Adult Congenital Heart Disease.

Background: Administrative data sets utilize billing codes for research and quality assessment. Previous data suggest that such codes can accurately identify adults with congenital heart disease (CHD) in the cardiology clinic, but their use has yet to be validated in a larger population.

Methods And Results: All administrative codes from an entire health system were queried for a single year.

Platypnea-Orthodeoxia Syndrome: A Case of Chronic Paroxysmal Hypoxemia.

A 75-year-old man with chronic (30-year) unexplained paroxysmal hypoxemia presented with postural hypoxemia and desaturation consistent with a clinical manifestation of platypnea-orthodeoxia syndrome. His history included a lack of significant past pulmonary disease, yet with intermittent need for oxygen supplementation. On admission he was found to have an interatrial shunt through a patent foramen ovale.