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The British Journal of Radiology Dec 2011Imaging of patients with suspected or known pericardial disease remains challenging. Echocardiography is the first-line investigation for pericardial disease but it has... (Review)
Review
Imaging of patients with suspected or known pericardial disease remains challenging. Echocardiography is the first-line investigation for pericardial disease but it has specific limitations in terms of its abilities to visualise the pericardium fully and to identify extracardiac pathology. Cardiac cross-sectional imaging by both MRI and CT has developed significantly and now has an important role in the investigation of pericardial disease. This article examines the appearances of both healthy and diseased pericardium using CT and MRI. The typical imaging findings across a wide range of conditions are illustrated and the roles of CT and MRI are reviewed. The relative merits and weaknesses of each modality are explored and the specific functional techniques that are available are introduced.
Topics: Heart Diseases; Heart Neoplasms; Humans; Magnetic Resonance Imaging; Mediastinal Cyst; Pericardial Effusion; Pericarditis; Pericarditis, Constrictive; Pericardium; Tomography, X-Ray Computed
PubMed: 22723538
DOI: 10.1259/bjr/16168253 -
La Revue Du Praticien Feb 1955
Topics: Heart; Humans; Pericardium
PubMed: 14358216
DOI: No ID Found -
JACC. Cardiovascular Imaging Jun 2011
Topics: Cardiac Catheterization; Echocardiography, Doppler, Pulsed; Heart Diseases; Humans; Magnetic Resonance Imaging; Pericardium; Predictive Value of Tests; Radiography
PubMed: 21679904
DOI: 10.1016/j.jcmg.2010.08.022 -
JACC. Clinical Electrophysiology Jul 2020
Topics: Animals; Atrial Fibrillation; Catheter Ablation; Endocardium; Pericardium; Swine
PubMed: 32703567
DOI: 10.1016/j.jacep.2020.04.026 -
Journal of Biomedical Materials... May 2004The tearing of the valve leaflet of a cardiac bioprosthesis can cause early failure of this device, which is employed to replace a diseased native valve. This report...
The tearing of the valve leaflet of a cardiac bioprosthesis can cause early failure of this device, which is employed to replace a diseased native valve. This report involves the study of the behavior of 312 tissue samples (152 of calf pericardium and 160 of ostrich pericardium) treated with glutaraldehyde and subsequently subjected to tear testing. The samples were cut in the two principal directions: longitudinally, or root to apex, and transversely. They included a series of control samples that were left unsutured, and the remaining samples were repaired with the use of two different suture techniques: a running suture in the direction of the load and a telescoping suture perpendicular to the load. Four commercially available suture materials were employed: Pronova, nylon, Gore-Tex, or silk. The unsutured control samples of both types of pericardium exhibited a similar anisotropic behavior in the tear test. The mean resistance to tearing of the calf pericardium was 24.29 kN m in samples cut longitudinally and 34.78 kN m in those cut transversely (p =.03); the values were 28.08 kN m and 37.12 kN m (p =.002), respectively, in ostrich pericardium. The series repaired with the telescoping suture always exhibited greater resistance to tearing, with values that ranged between 44.34 and 64.27 kN for the samples of calf pericardium and from 41.65 to 47.65 kN for those obtained from ostrich. These assays confirm the anisotropic behavior of calf and ostrich pericardium treated with glutaraldehyde when subjected to tear testing, as well as the loss of this behavior in ostrich pericardium after suturing. Suturing techniques, such as the telescoping model, that provide a greater resistance to tearing should be studied for use in the design of the valve leaflets of cardiac bioprostheses made of biological materials.
Topics: Animals; Anisotropy; Biocompatible Materials; Cattle; Heart Valve Prosthesis; Materials Testing; Pericardium; Prosthesis Failure; Stress, Mechanical; Struthioniformes; Suture Techniques; Sutures; Tensile Strength
PubMed: 15116401
DOI: 10.1002/jbm.b.20014 -
The Annals of Thoracic Surgery Oct 2022
Topics: Catheter Ablation; Cryosurgery; Epicardial Mapping; Humans; Pericardium; Tachycardia, Ventricular
PubMed: 34883084
DOI: 10.1016/j.athoracsur.2021.10.048 -
Multimedia Manual of Cardiothoracic... Dec 2020Chronic constrictive pericarditis results from inflammation and fibrosis of the pericardium. This situation eventually leads to impairment of diastolic filling and right...
Chronic constrictive pericarditis results from inflammation and fibrosis of the pericardium. This situation eventually leads to impairment of diastolic filling and right heart failure. Once the diagnosis is made, because the disease is basically irreversible, a pericardiectomy is the mandatory treatment. The standard surgical treatment has been extensively described. The goal of this video tutorial is to render a visual explanation of the described techniques and to provide tips to help make the procedure easier to perform. The standard technique is performed through a median sternotomy, preferably without cardiopulmonary bypass if feasible. The procedure includes the complete removal of the anterior pericardium from phrenic nerve to phrenic nerve and the removal of the diaphragmatic pericardium and of part of the pericardium posterior to both phrenic nerves. Before starting the actual pericardiectomy procedure, it is useful to separate the pericardial rigid shell from the pleurae and from the diaphragm; this step allows the operator to see both phrenic nerves clearly and to give clear boundaries between the pericardium and the diaphragm, which are not often as clear as desirable due to fat, edema, inflammation, and scarring. Once a portion of the pericardium has been detached from the myocardium, it can be excised, making the portion yet to be removed more visible.
Topics: Adult; Cardiopulmonary Bypass; Heart Failure; Humans; Male; Pericardiectomy; Pericarditis, Constrictive; Pericardium; Sternotomy; Treatment Outcome
PubMed: 33399281
DOI: 10.1510/mmcts.2020.076 -
Medicina (Kaunas, Lithuania) Mar 2023Guided tissue regeneration, with or without a bone graft, is a modality for the treatment of furcation involvement. Because the direct application of a bone graft into...
Guided tissue regeneration, with or without a bone graft, is a modality for the treatment of furcation involvement. Because the direct application of a bone graft into the periodontal defect has drawbacks, such as the risk of microbial contamination and/or graft containment, a new modality of directly loading bone graft particles over the barrier membrane is now used. This study aimed to evaluate clinically and radiographically the effects of a two-layered membrane consisting of a layer of nanohydroxyapatite particles on a pericardium membrane in the treatment of stage III periodontitis, compared with direct application of a nanohydroxyapatite bone graft. : Forty individuals with grade II furcation involvement were divided into two groups. Group I was treated with a two-layered membrane consisting of a pericardium membrane with nanohydroxy particles loaded onto its surface; group II was treated with direct application of a nano bone graft covered with pericardium membrane. Clinical and cone beam computed tomography (CBCT) radiographic assessments of the two groups were carried out after a 6-month follow-up period. : Clinically, the results showed a significant reduction in furcation involvement (F). The CBCT assessment also revealed reductions in depth (D), height (H), width (W), and 3D radiographic volume of furcation involvement in all study groups at baseline and at 6 months postoperative ( < 0.05) with no significant differences between groups. : According to the results of the current study, a two-layer membrane formed by direct loading of bone graft particles onto a pericardium membrane can be used as an effective, reliable, and easy-to-use substitute for direct bone graft application into periodontal defects.
Topics: Humans; Furcation Defects; Periodontitis; Pericardium
PubMed: 36984573
DOI: 10.3390/medicina59030572 -
The Annals of Thoracic Surgery Feb 2011
Topics: Animals; Bioprosthesis; Cattle; Echocardiography, Transesophageal; Humans; Male; Middle Aged; Pericardium; Radiography
PubMed: 21256261
DOI: 10.1016/j.athoracsur.2010.10.080 -
Biomaterials Advances Apr 2023Hemocompatibility tuning was adopted to explore and refine an innovative, GA-free preparation strategy combining decellularization, riboflavin/UV crosslinking, and...
Hemocompatibility tuning of an innovative glutaraldehyde-free preparation strategy using riboflavin/UV crosslinking and electron irradiation of bovine pericardium for cardiac substitutes.
Hemocompatibility tuning was adopted to explore and refine an innovative, GA-free preparation strategy combining decellularization, riboflavin/UV crosslinking, and low-energy electron irradiation (SULEEI) procedure. A SULEEI-protocol was established to avoid GA-dependent deterioration that results in insufficient long-term aortic valve bioprosthesis durability. Final SULEEI-pericardium, intermediate steps and GA-fixed reference pericardium were exposed in vitro to fresh human whole blood to elucidate effects of preparation parameters on coagulation and inflammation activation and tissue histology. The riboflavin/UV crosslinking step showed to be less efficient in inactivating extracellular matrix (ECM) protein activity than the GA fixation, leading to tissue-factor mediated blood clotting. Intensifying the riboflavin/UV crosslinking with elevated riboflavin concentration and dextran caused an enhanced activation of the complement system. Yet activation processes induced by the previous protocol steps were quenched with the final electron beam treatment step. An optimized SULEEI protocol was developed using an intense and extended, trypsin-containing decellularization step to inactivate tissue factor and a dextran-free, low riboflavin, high UV crosslinking step. The innovative and improved GA-free SULEEI-preparation protocol results in low coagulant and low inflammatory bovine pericardium for surgical application.
Topics: Animals; Cattle; Humans; Glutaral; Electrons; Pericardium; Heart Valve Prosthesis; Bioprosthesis
PubMed: 36764200
DOI: 10.1016/j.bioadv.2023.213328