Pulmonary hypertension phenotypes in patients with systemic sclerosis

Area of Science:

• Cardiology
• Rheumatology
• Pulmonology

Background:

• Pulmonary hypertension (PH) is a frequent complication in systemic sclerosis (SSc).
• PH in SSc is heterogeneous, encompassing pulmonary arterial hypertension (PAH), PH from left heart disease, and PH from interstitial lung disease.
• Increased incidence of pulmonary veno-occlusive disease is also noted in SSc patients.

Purpose of the Study:

• To review the epidemiology, diagnosis, outcomes, and treatment of pulmonary vascular phenotypes in SSc.
• To address diagnostic challenges arising from updated hemodynamic criteria.
• To explore the optimal thresholds for diagnosing PAH and the role of exercise in early detection.

Main Methods:

• Review of current literature on SSc-associated pulmonary hypertension.
• Analysis of epidemiological data, diagnostic criteria, and treatment outcomes.
• Discussion of recent advancements and ongoing research in the field.

Main Results:

• SSc is associated with diverse forms of PH, each with distinct pathophysiological mechanisms and clinical implications.
• Updated diagnostic criteria introduce therapeutic uncertainty for patients with borderline hemodynamics.
• Further research is needed to refine PAH diagnostic thresholds and the utility of exercise testing.

Conclusions:

• Accurate and timely diagnosis of PH in SSc is essential for managing morbidity and mortality.
• Understanding the spectrum of pulmonary vascular phenotypes in SSc is critical for personalized treatment.
• Ongoing research is vital to resolve diagnostic ambiguities and optimize therapeutic approaches for SSc-associated PH.