Right Heart Catheterization
Right heart catheterization (RHC) is mandatory in the diagnosis of PH.
- In CTEPH, the RHC has additional importance, as pulmonary vascular resistance is the most important determinant of prognosis and the risk associated with PTE.*18
- CTEPH is defined as precapillary PH as assessed by RHC (mean PAP ≥25 mmHg, PCWP ≤15 mmHg) in the presence of multiple chronic/organized occlusive thrombi/emboli in the elastic pulmonary arteries (main, lobar, segmental, subsegmental) after at least 3 months of effective anticoagulation.5
Normal ranges of hemodynamic values.24
*Also called pulmonary endarterectomy or PEA.
Learn about common myths and realities concerning CTEPH and its diagnosis in the following videos:
Is a V/Q scan enough to make a definitive diagnosis?
Can CT pulmonary angiography be used to rule out CTEPH?
If signs point to PH, is there a need for a V/Q scan?
Pulmonary vascular resistance is an important determinant of CTEPH prognosis.
Standard approaches for catheter access.