Right ventricular load and contractility in HIV-associated pulmonary hypertension.

Citation metadata

From: PLoS ONE(Vol. 16, Issue 2)
Publisher: Public Library of Science
Document Type: Report
Length: 5,456 words
Lexile Measure: 1450L

Document controls

Main content

Abstract :

Background People living with human immunodeficiency virus (PLWH) are at risk of developing pulmonary hypertension (PH) and right ventricular (RV) dysfunction, but understanding of the relationship of RV function to afterload (RV-PA coupling) is limited. We evaluated the clinical and hemodynamic characteristics of human immunodeficiency virus (HIV)-associated PH. Methods We performed a retrospective review of patients with a diagnosis of HIV undergoing right heart catheterization (RHC) from 2000-2016 in a tertiary care center. Inclusion criteria were diagnosis of HIV, age [greater than or equal to] 18 years and availability of RHC data. PH was classified as either pulmonary arterial hypertension (PAH; mean pulmonary arterial pressure [mPAP] [greater than or equal to] 25mmHg with pulmonary artery wedge pressure [PAWP] [less than or equal to] 15mmHg) or pulmonary venous hypertension (PVH; mPAP [greater than or equal to] 25mmHg with PAWP 15). We collected demographics, CD4 cell count, HIV viral load, RHC and echocardiographic data. The single beat method was used to calculate RV-PA coupling from RHC. Results Sixty-two PLWH with a clinical likelihood for PH underwent RHC. Thirty-two (52%) met PH criteria (15 with PAH, 17 with PVH). Average time from diagnosis of HIV to diagnosis of PH was 11 years. Eleven of 15 individuals with PAH were on antiretroviral therapy (ART) while all 17 patients with PVH were on ART. Compared to PLWH without PH, those with PH had an increased likelihood of having a detectable HIV viral load and lower CD4 cell counts. PLWH with PAH or PVH had increased RV afterload with normal RV contractility, and preserved RV-PA coupling. Conclusion PLWH with PH (PAH or PVH) were more likely to have a detectable HIV viral load and lower CD4 count at the time of RHC. PLWH with PAH or PVH had increased RV afterload, normal RV contractility, with preserved RV-PA coupling suggestive of an early onset, mild, and compensated form of PH. These results should be confirmed in larger studies.

Source Citation

Source Citation   

Gale Document Number: GALE|A652794693