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Journal of the American College of... Aug 2021
Topics: Endocarditis; Endocarditis, Bacterial; Humans; Pulmonary Valve
PubMed: 34353536
DOI: 10.1016/j.jacc.2021.05.043 -
Seminars in Thoracic and Cardiovascular... 2021
Topics: Bioprosthesis; Heart Valve Prosthesis; Humans; Pulmonary Valve
PubMed: 32858215
DOI: 10.1053/j.semtcvs.2020.07.011 -
Pediatric Radiology Aug 2023Pulmonary valve replacement is recommended in patients with repaired tetralogy of Fallot based on cardiac magnetic resonance imaging (MRI) criteria. This procedure is...
Surgical and transcatheter pulmonary valve replacement in patients with repaired tetralogy of Fallot: cardiac magnetic resonance imaging characteristics and morphology of right ventricular outflow tract.
BACKGROUND
Pulmonary valve replacement is recommended in patients with repaired tetralogy of Fallot based on cardiac magnetic resonance imaging (MRI) criteria. This procedure is performed by surgical or transcatheter approaches.
OBJECTIVE
We aimed to investigate the differences in preprocedural MRI characteristics (volume, function, strain) and morphology of the right ventricular outflow tract and branch pulmonary arteries in patients for whom surgical or transcatheter pulmonary valve replacement was planned.
MATERIALS AND METHODS
Cardiac MRI of 166 patients with tetralogy of Fallot were analyzed. Of these, 36 patients for whom pulmonary valve replacement was planned were included. Magnetic resonance imaging characteristics, right ventricular outflow tract morphology, branch pulmonary artery flow distribution and diameter were compared between surgical and transcatheter groups. Spearman correlation and Kruskal-Wallis tests were performed.
RESULTS
Circumferential and radial MRI strain for the right ventricle were lower in the surgical group (P=0.045 and P=0.046, respectively). The diameter of the left pulmonary artery was significantly lower (P=0.021) and branch pulmonary artery flow and diameter ratio were higher (P=0.044 and P = 0.002, respectively) in the transcatheter group. There was a significant correlation between right ventricular outflow tract morphology and right ventricular end-diastolic volume index and global circumferential and radial MRI strain (P=0.046, P=0.046 and P= 0.049, respectively).
CONCLUSION
Preprocedural MRI strain, right-to-left pulmonary artery flow, diameter ratio and morphological features of the right ventricular outflow tract were significantly different between the two groups. A transcatheter approach may be recommended for patients with branch pulmonary artery stenosis, since both pulmonary valve replacement and branch pulmonary artery stenting can be performed in the same session.
Topics: Humans; Heart Ventricles; Pulmonary Valve; Tetralogy of Fallot; Pulmonary Valve Insufficiency; Magnetic Resonance Imaging; Treatment Outcome; Retrospective Studies
PubMed: 37010546
DOI: 10.1007/s00247-023-05645-2 -
JACC. Cardiovascular Interventions Dec 2015
Topics: Aortic Valve Stenosis; Cardiac Catheterization; Heart Valve Prosthesis; Heart Valve Prosthesis Implantation; Humans; Pulmonary Valve
PubMed: 26718515
DOI: 10.1016/j.jcin.2015.09.011 -
JACC. Cardiovascular Interventions Aug 2023The Harmony transcatheter pulmonary valve (TPV) is the first U.S. Food and Drug Administration-approved device for severe pulmonary regurgitation (PR) in the native or... (Clinical Trial)
Clinical Trial
BACKGROUND
The Harmony transcatheter pulmonary valve (TPV) is the first U.S. Food and Drug Administration-approved device for severe pulmonary regurgitation (PR) in the native or surgically repaired right ventricular outflow tract (RVOT).
OBJECTIVES
One-year safety and effectiveness of the Harmony TPV were evaluated in patients from the Harmony Native Outflow Tract Early Feasibility Study, Harmony TPV Pivotal Study, and Continued Access Study, representing the largest cohort to date of Harmony TPV recipients.
METHODS
Eligible patients had severe PR by echocardiography or PR fraction ≥ 30% by cardiac magnetic resonance imaging and clinical indications for pulmonary valve replacement. The primary analysis included 87 patients who received a commercially available TPV22 (n = 42) or TPV25 (n = 45) device; 19 patients who received an early device iteration prior to its discontinuation were evaluated separately.
RESULTS
In the primary analysis, median patient age at treatment was 26 years (IQR: 18-37 years) in the TPV22 group and 29 years (IQR: 19-42 years) in the TPV25 group. At 1 year, there were no deaths; 98% of TPV22 and 91% of TPV25 patients were free from the composite of PR, stenosis, and reintervention (moderate or worse PR, mean RVOT gradient >40 mmHg, device-related RVOT reoperation, and catheter reintervention). Nonsustained ventricular tachycardia occurred in 16% of patients. Most patients had none/trace or mild PR (98% of TPV22 patients, 97% of TPV25 patients). Outcomes with the discontinued device are reported separately.
CONCLUSIONS
The Harmony TPV device demonstrated favorable clinical and hemodynamic outcomes across studies and valve types through 1 year. Further follow-up will continue to assess long-term valve performance and durability.
Topics: Humans; Cardiac Catheterization; Heart Valve Prosthesis; Heart Valve Prosthesis Implantation; Prospective Studies; Pulmonary Valve; Pulmonary Valve Insufficiency; Treatment Outcome; Ventricular Outflow Obstruction
PubMed: 37278682
DOI: 10.1016/j.jcin.2023.03.002 -
The Journal of Thoracic and... Nov 2016
Topics: Cardiac Surgical Procedures; Heart Defects, Congenital; Heart Valve Prosthesis; Heart Valve Prosthesis Implantation; Humans; Pulmonary Valve
PubMed: 27637425
DOI: 10.1016/j.jtcvs.2016.07.031 -
Surgical and Radiologic Anatomy : SRA Apr 2020A quadricuspid pulmonary valve obtained upon autopsy of a 26-year-old male was examined. The macroscopic evaluation revealed three normal (posterior, right anterior and...
A quadricuspid pulmonary valve obtained upon autopsy of a 26-year-old male was examined. The macroscopic evaluation revealed three normal (posterior, right anterior and left anterior) leaflets and one additional leaflet of the pulmonary valve. Except that, the heart showed neither other anatomical variabilities nor any signs of heart disease. The additional leaflet was located between the left anterior and right anterior leaflets and was significantly smaller in size. Under the microscope, all leaflets showed preservation of the typical, layered structure. The thickness and extracellular matrix composition of the particular layers differed between the leaflets. Right ventricular myocardium (myocardial sleeves) exceeded the level of the hinge line in all three normal leaflets, which was not observed in the additional leaflet. Autonomic nerves and ganglia were not seen in the perivalvular epicardial adipose tissue surrounding the additional leaflet. The sinus wall of all the leaflets revealed typical organization of collagen bundles as well as elastic fibers and showed no signs of disruption. The abnormality seen in the structure of the pulmonary valve is likely to be a result of disturbed embryonic development and may affect the clinical management of patients with such variation.
Topics: Adult; Biometry; Humans; Male; Pulmonary Valve
PubMed: 31784785
DOI: 10.1007/s00276-019-02387-5 -
JACC. Cardiovascular Interventions Aug 2019
Topics: Heart Valve Prosthesis Implantation; Humans; Pulmonary Valve; Pulmonary Valve Insufficiency; Treatment Outcome
PubMed: 31202945
DOI: 10.1016/j.jcin.2019.04.006 -
Texas Heart Institute Journal Sep 2022In this retrospective study, we compared the results from 2 pulmonary valve augmentation techniques in patients undergoing surgical repair of tetralogy of Fallot.
BACKGROUND
In this retrospective study, we compared the results from 2 pulmonary valve augmentation techniques in patients undergoing surgical repair of tetralogy of Fallot.
METHODS
Between 2015 and 2018, 18 patients had anterior pulmonary valve repair at our institution, and 26 patients had both anterior and posterior pulmonary valve repair.
RESULTS
Patients ranged from 6 months to 30 years of age. The median follow-up period was 8 months in the anterior augmentation group and 5 months in the anterior and posterior augmentation group. Postoperative echocardiograms indicated that only 2 patients (11%) in the anterior augmentation group had moderate or severe pulmonary insufficiency, compared with no patients in the anterior and posterior augmentation group. At follow-up, pulmonary insufficiency was seen in 3 patients (17%) in the anterior augmentation group and no patients in the anterior and posterior augmentation group.
CONCLUSION
Reconstruction of the native pulmonary valve accompanied by pulmonary cusp augmentation can decrease or even circumvent postoperative pulmonary insufficiency. Both anterior augmentation and anterior and posterior augmentation techniques are easily applied; however, we believe that the anterior and posterior augmentation technique is superior in terms of early postoperative and follow-up pulmonary insufficiency outcomes.
Topics: Humans; Infant; Pulmonary Valve; Pulmonary Valve Insufficiency; Retrospective Studies; Tetralogy of Fallot; Treatment Outcome
PubMed: 36223246
DOI: 10.14503/THIJ-20-7368 -
Scientific Reports Jul 2021Murine animal models are an established standard in translational research and provides a potential platform for studying heart valve disease. To date, studies on heart...
Murine animal models are an established standard in translational research and provides a potential platform for studying heart valve disease. To date, studies on heart valve disease using murine models have been hindered by a lack of appropriate methodologies due to their small scale. In the present study, we developed a multi-scale, imaging-based approach to extract the functional structure and geometry for the murine heart valve. We chose the pulmonary valve (PV) to study, due to its importance in congenital heart valve disease. Excised pulmonary outflow tracts from eleven 1-year old C57BL/6J mice were fixed at 10, 20, and 30 mmHg to simulate physiological loading. Micro-computed tomography was used to reconstruct the 3D organ-level PV geometry, which was then spatially correlated with serial en-face scanning electron microscopy imaging to quantify local collagen fiber distributions. From the acquired volume renderings, we obtained the geometric descriptors of the murine PV under increasing transvalvular pressures, which demonstrated remarkable consistency. Results to date suggest that the preferred collagen orientation was predominantly in the circumferential direction, as in larger mammalian valves. The present study represents a first step in establishing organ-level murine models for the study of heart valve disease.
Topics: Algorithms; Animals; Biomechanical Phenomena; Collagen; Heart Valve Diseases; Image Processing, Computer-Assisted; Mice; Models, Theoretical; Pulmonary Valve; Translational Research, Biomedical; X-Ray Microtomography
PubMed: 34234231
DOI: 10.1038/s41598-021-93513-0