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Updated: Apr 25, 2026

Increasing Pulmonary Artery Pulsatile Flow Improves Hypoxic Pulmonary Hypertension in Piglets
Published on: May 11, 2015
[Pulmonary hypertension: definition, diagnostic and new classification]
Andrei Seferian1, Gérald Simonneau1
1Université Paris-Sud, faculté de médecine, 94276 Le Kremlin-Bicêtre, France; AP-HP, hôpital Bicêtre, DHU Torino, centre de référence de l'hypertension pulmonaire sévère, service de pneumologie et réanimation respiratoire, 78, rue du Général-Leclerc, 94270 Le Kremlin-Bicêtre, France; Inserm UMR-S 999, LabEx Lermit, hypertension artérielle pulmonaire, physiopathologie et innovation thérapeutique, centre chirurgical Marie-Lannelongue, 92350 Le Plessis-Robinson, France.
Pulmonary hypertension (PH) diagnosis requires specific criteria, including mean pulmonary arterial pressure (mPAP) ≥ 25 mm Hg. Further investigation differentiates causes like post-embolic PH and precapillary PH for appropriate classification and treatment.
Area of Science:
- Cardiology
- Pulmonology
- Medical Diagnostics
Context:
- Pulmonary hypertension (PH) is defined by elevated mean pulmonary arterial pressure (mPAP) ≥ 25 mm Hg.
- Symptoms include exertional dyspnea and right heart failure signs, often initially detected via echocardiography.
- Accurate diagnosis is crucial for patient management and prognosis.
Purpose:
- To outline the diagnostic pathway for pulmonary hypertension (PH).
- To differentiate between various types of PH, including pulmonary arterial hypertension (PAH) and post-embolic PH.
- To emphasize the role of right heart catheterization in identifying precapillary PH.
Summary:
- Diagnostic criteria for PH and PAH are defined using mPAP, PCWP, and PVR.
- V/Q lung scans screen for post-embolic PH, while right heart catheterization is essential for precapillary PH.
- Comprehensive evaluation including clinical data, blood tests, and imaging is necessary for PH classification.
Impact:
- Facilitates accurate diagnosis and classification of PH subtypes.
- Guides further hemodynamic and radiological investigations for operability decisions.
- Highlights the need for research into novel risk factors and PH mechanisms.
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