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07.01.2020 | Original Article | Ausgabe 2/2020

Pediatric Cardiology 2/2020

Management of Persistent Pulmonary Hypertension After Correction of Congenital Heart Defect with Autologous Marrow-Derived Mononuclear Stem Cell Injection into the Pulmonary Artery: A Pilot Study

Zeitschrift:
Pediatric Cardiology > Ausgabe 2/2020
Autoren:
Hamid Amoozgar, Pegah Banafi, Hamid Mohammadi, Mohammad Reza Edraki, Nima Mehdizadegan, Gholamhossein Ajami, Mohammad Borzouee, Kambiz Keshaarz, Poria Moradi, Elham Dehghani
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Abstract

Pulmonary arterial hypertension (PAH) related to left-to-right shunt can progress to Eisenmenger syndrome, a serious and fatal disease that is not yet curable. This pilot study considered stem cell injection as a new treatment modality in persistent pulmonary hypertension after the correction of a congenital heart defect. Three patients with persistent pulmonary hypertension after ventricular septal defect repair were included in this pilot study for a clinical trial. Mononuclear stem cells derived from patients’ bone marrow specimens were injected into the right and left pulmonary arteries via cardiac catheterization. The patients were followed over a 6-month period, with six-minute walk test, echocardiography and repeated angiography performed in the sixth month after treatment. The results of the study showed improvement of 40 m, 280 m and 100 m in 6-minute walk distance in patients 1 to 3, respectively. The peak PR gradient decreased 2, 5 and 9 mmHg by echocardiography, and mean PA pressure decreased 21, 22 and 9 mmHg by catheterization in patients 1 to 3, respectively. Pulmonary artery resistance decreased 4, 4.5 and 1.3 Wood units after 6 months of stem cell therapy in the three patients. No short-term complications were detected in this pilot trial, and all patients tolerated the procedure without any complications. Intrapulmonary artery injection of stem cells may have a role in the treatment of persistent PAH secondary to congenital heart disease. This procedure is feasible, with no significant complications, and this study can be considered as a platform for larger studies.

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