Patients with pulmonary hypertension presenting to the emergency department.

Pulmonary hypertension (PH) patients represent a complex subset of patients in the emergency department (ED), yet little is known about their presentations and outcomes. The objective of this study is to analyze the demographics, dispositions and the rates of return visits for PH patients visiting the ED, focusing on PH patients identified as having high frequency visits.We performed a retrospective cohort analysis of all patients with ICD-9-CM and ICD-10-CM codes corresponding to PH presenting to an academic medical center emergency department during a 21-month period. The primary outcome was patients with high frequency ED visits, defined as 4 or more visits in a 12-month period. Secondary outcomes included ED dispositions, return ED visits, hospital length of stay, and in-hospital mortality.Six hundred and eighty four unique patients with a coded diagnosis of PH visited the emergency department a total of 1447 times. Eighty-four patients (12.28%) were identified as having high frequency visits. Factors associated with high frequency ED visits included male sex, liver disease, rheumatologic disease, and having Group 1 PH. PH patients’ admission rate was substantial at 56.60%, and their inpatient mortality was increased (6.7% vs 3.7% for all admissions from ED, P 

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