Notch ratio in pulmonary flow predicts long-term survival after pulmonary endarterectomy for chronic thromboembolic pulmonary hypertension.
Marcel A M BeijkJ A WinkelmanH M EckmannD A SamsonA P WidyantiJ VleugelsD C M BombeldC G C M MeijerH J BogaardA Vonk NoordegraafH A C M de Bruin-BonB J BoumaPublished in: Heart and vessels (2024)
Pre-operative assessment of NR is a predictor of long-term survival in CTEPH patients undergoing PEA, with low mortality risk in patients with NR < 1.0. Long-term survivors with a NR < 1.0 and NR > 1.0 had a significant decrease in sPAP after PEA. However, the TAPSE/sPAP only significantly increased in the NR < 1.0 group. In the NR < 1.0 group, the 6-min walk test increased significantly between pre-operative and at 1-year post-operative follow-up. NR is a simple echocardiographic parameter that can be used in clinical decision-making for PEA.