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Pericardium

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https://www.readbyqxmd.com/read/29781171/fiber-based-fluorescence-lifetime-imaging-of-recellularization-processes-on-vascular-tissue-constructs
#1
Alba Alfonso-Garcia, Jeny Shklover, Benjamin E Sherlock, Alyssa Panitch, Leigh G Griffiths, Laura Marcu
New techniques able to monitor the maturation of tissue engineered constructs over time are needed for a more efficient control of developmental parameters. Here, a label-free fluorescence lifetime imaging (FLIm) approach implemented through a single fiber-optic interface is reported for non-destructive in situ assessment of vascular biomaterials. Recellularization processes of antigen removed bovine pericardium scaffolds with endothelial cells and mesenchymal stem cells were evaluated on the serous and the fibrous sides of the scaffolds, two distinct extracellular matrix niches, over the course of a 7 day culture period...
May 21, 2018: Journal of Biophotonics
https://www.readbyqxmd.com/read/29779525/geometrical-constraint-of-sources-in-noninvasive-localization-of-premature-ventricular-contractions
#2
Jana Svehlikova, Michal Teplan, Milan Tysler
The inverse problem of electrocardiography for localization of a premature ventricular contraction (PVC) origin was solved and compared for three types of the equivalent cardiac electrical generator: transmembrane voltages, epicardial potentials, and dipoles. Instead of regularization methods usually used for the ill-posed inverse problems an assumption of a single point source representative of the heart generator was applied to the solution as a geometrical constraint. Body surface potential maps were simulated from eight modeled origins of the PVC in the heart model...
May 2018: Journal of Electrocardiology
https://www.readbyqxmd.com/read/29777668/anterior-pericardiectomy-for-post-infective-constrictive-pericarditis-intermediate-term-outcomes
#3
Anil Acharya, Raamesh Koirala, Nivesh Rajbhandari, Jyotindra Sharma, Bijoy Rajbanshi
BACKGROUND: Post tubercular constrictive pericarditis is prevalent pericardial disease in developing countries. Pericardiectomy is the treatment of choice but considered a procedure of high morbidity and mortality. METHODS: From January 2003 to December 2013 we performed 130 pericardiectomies. Mean age was 22.95±12.55 years with 92 (71%) males. All patients were symptomatic; 118 (91%) were in NYHA class III / IV. Almost all patients were diagnosed to be of tubercular origin; 14 (11 %) histopathologically proven, 77 (59%) with definitive history while 39 (30%) suspected to be of tubercular origin and 91 (70%) received prior antitubercular treatment...
May 16, 2018: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/29772331/surgical-treatment-of-a-high-flow-femoro-femoral-arteriovenous-fistula-in-an-intravenous-drug-abuser
#4
Pietro Rossetti, Paolo Perini, Alessandro Ucci, Gaetano Carolla, Antonio Freyrie, Roberto Quintavalla
OBJECTIVE: To report the surgical treatment of a high-flow femoro-femoral arteriovenous fistula (AVF), a rare complication of intravenous drug abuse. CASE REPORT: A 36-year-old woman with history of intravenous heroin and cocaine abuse presented with right lower limb oedema, inguinal bruit and heart failure. Duplex ultrasound examination and CT-angiography showed a large, high-flow AVF involving the common femoral vein and the superficial femoral artery, associated with thrombosis of the great saphenous vein and an important inflammation in the right groin, without active bleeding...
May 14, 2018: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/29770290/current-surgical-strategies-and-techniques-of-aortic-valve-diseases-in-children
#5
REVIEW
Kun Wang, Huifeng Zhang, Bing Jia
While the long-term outcome of surgical aortic valvotomy (SAV) appears to be better than that of balloon aortic valvuloplasty (BAV) as the primary procedure of aortic valve stenosis, the surgical strategies and techniques of treating aortic valve disease in children in other situations remain controversial. Valve repair should be first considered while replacement is still unavoidable in some cases, and new repair techniques developed by innovative surgeons are gradually becoming adopted. Some complex repair procedures such as cusp extension, leaflet replacement/reconstruction have provided satisfactory outcomes...
April 2018: Translational Pediatrics
https://www.readbyqxmd.com/read/29765618/mediastinal-monophasic-synovial-sarcoma-with-pericardial-extension-causing-hemodynamic-instability
#6
Habib R Khan, Mohammad I Ansari, Andrew P Thain, Sadia Abdullah, Ramya Parasa, Richard W Varcoe
A 46-year-old man presented with mass on chest x-ray along with a 6-month history of weight loss, dyspnea and cough. He was hypotensive and an echocardiogram showed large extra-cardiac mass compressing the right ventricular outflow tract resulting in features of cardiac tamponade. Chest computed tomography revealed a mediastinal mass invading the pericardium adjacent to right ventricular outflow tract. Biopsy of the mass confirmed primary monophasic synovial sarcoma. Chemotherapy and radiotherapy along with anti-inflammatories were given as surgery was too high risk due to the location of the tumour and pericardial involvement...
May 2018: Oxford Medical Case Reports
https://www.readbyqxmd.com/read/29761620/polyserositis-a-diagnostic-challenge
#7
Inés Losada, Juan González Moreno, Nuria Roda, Lola Ventayol, Yolanda Borjas, Francisco Javier Domínguez, Victoria Fernández Vaca, Mercedes García Gasalla, Antoni Payeras
Polyserositis (PS) is the inflammation, with effusion, of different serous membranes. It has been associated with different aetiologiesbut the aetiology of PS remains unknown in a high percentage of patients. The general objective of this retrospective study was to analyse the aetiology of PS cases seen at Son Llàtzer Hospital in an eleven-year period. Other objectives were to determine epidemiological, clinical, and analytical characteristics of these patients. Ninety-two patients were included in the study...
May 14, 2018: Internal Medicine Journal
https://www.readbyqxmd.com/read/29761422/computational-pre-surgical-planning-of-arterial-patch-reconstruction-parametric-limits-and-in-vitro-validation
#8
S Samaneh Lashkarinia, Senol Piskin, Tijen A Bozkaya, Ece Salihoglu, Can Yerebakan, Kerem Pekkan
Surgical treatment of congenital heart disease (CHD) involves complex vascular reconstructions utilizing artificial and native surgical materials. A successful surgical reconstruction achieves an optimal hemodynamic profile through the graft in spite of the complex post-operative vessel growth pattern and the altered pressure loading. This paper proposes a new in silico patient-specific pre-surgical planning framework for patch reconstruction and investigates its computational feasibility. The proposed protocol is applied to the patch repair of main pulmonary artery (MPA) stenosis in the Tetralogy of Fallot CHD template...
May 14, 2018: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/29761002/large-retrospective-study-of-artificial-dura-substitute-in-patients-with-traumatic-brain-injury-undergo-decompressive-craniectomy
#9
Hongtao Sun, Hongda Wang, Yunfeng Diao, Yue Tu, Xiaohong Li, Wanyong Zhao, Jibin Ren, Sai Zhang
Background: Decompressive craniectomy is widely used for treating patients with traumatic brain injury (TBI). Usually patients have dura mater defect due to surgery or injury itself. The defective area may left open or repaired by artificial dura substitutes. A variety of artificial dura substitutes have been used for this purpose. Objective: This study aimed to evaluate bovine-derived pericardium membrane as artificial dural material for patients with decompressive craniectomy...
May 2018: Brain and Behavior
https://www.readbyqxmd.com/read/29760834/a-case-series-of-two-patients-presenting-with-pericardial-effusion-as-first-manifestation-of-non-small-cell-lung-cancer-with-braf-mutation-and-expression-of-pd-l1
#10
Muhammad Mufti, Steven Ching, Sassan Farjami, Sharareh Shahangian, Serap Sobnosky
Lung cancer is the number one cause of cancer-related deaths in the United States. Involvement of pericardium occurs once cancer has progressed to stage IV which can cause massive effusion in the pericardial sac. This can lead to cardiac tamponade which can be fatal very quickly if untreated. The following is a two patient case series in which both patients presented with large pericardial effusion. The first patient sought medical attention due to new onset palpitations and was found to have hemorrhagic pericardial effusion and pulmonary embolism (PE)...
April 2018: World Journal of Oncology
https://www.readbyqxmd.com/read/29757253/association-of-cardiovascular-health-with-epicardial-adipose-tissue-and-intima-media-thickness-the-kardiovize-study
#11
Jana Hruskova, Andrea Maugeri, Helena Podroužková, Tatiana Štípalová, Juraj Jakubík, Martina Barchitta, Jose R Medina-Inojosa, Martin Homolka, Antonella Agodi, Sarka Kunzova, Ondrej Sochor, Francisco Lopez-Jimenez, Manlio Vinciguerra
Background: Intima-media thickness (IMT) has been proposed as a measurement of subclinical atherosclerosis and has been associated with cardiovascular disease (CVD). Epicardial adipose tissue (EAT) is a fat depot between the pericardium and myocardium and has been associated with coronary atherosclerosis. The relationship between IMT and EAT thickness has not been reported before. We investigated the relationship between EAT thickness, IMT, CVD risk factors, and ideal cardiovascular health (CVH) metrics using subjects from the Kardiovize Brno 2030 cohort study, a random urban sample population in Central Europe...
May 13, 2018: Journal of Clinical Medicine
https://www.readbyqxmd.com/read/29755090/-successful-surgical-repair-of-the-aortic-annular-infective-endocarditis-with-subvalvular-abscess-report-of-a-case
#12
Manabu Shiraishi, Daigo Shinoda, Nobu Yokoyama, Satoshi Itoh
A 49-year-old female was admitted to our hospital with a history of fever for 2 weeks and consciousness disorder.Transthoracic echocardiography demonstrated aortic regurgitation with a mobile fibrous band adhering to the right cusp. Infective endocarditis was diagnosed by positive blood culture and echocardiographic findings. Emergent aortic valve surgery was performed because of uncontrollable infection. A destroyed aortic annulus and subvalvular abscess was found during the operation. Removal of abscess tissue and annuloplasty with self-pericardium were successfully performed...
May 2018: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/29755076/-constrictive-pericarditis-with-intractable-ascites-after-aortic-valve-replacement-report-of-a-case
#13
Rie Kageyama, Kyouhei Ueno, Masatoshi Sunada, Hirofumi Midorikawa, Megumu Kanno, Takashi Takano, Kouichi Satou
We report a 68-year-old man, who developed refractory ascites of unknown cause after aortic valve replacement. He was diagnosed with constrictive pericarditis because of "dip-and-plateau" waveform findings via cardiac catheterization and operated with cardiopulmonary bypass. Following waffle procedure, we incised pericardium for decompression, so that pericardial mobility and diastolic dysfunction was improved. Postoperative computed tomography (CT) image also showed decrease of ascites fluid. We concluded that pericardiotomy is an established surgical procedure and is excellent indication to constrictive pericarditis...
March 2018: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/29749108/biomaterial-characterization-of-off-the-shelf-decellularized-porcine-pericardial-tissue-for-use-in-prosthetic-valvular-applications
#14
Joshua A Choe, Soumen Jana, Brandon J Tefft, Ryan S Hennessy, Jason Go, David Morse, Amir Lerman, Melissa D Young
Fixed pericardial tissue is commonly used for commercially available xenograft valve implants, and has proven durability, but lacks the capability to remodel and grow. Decellularized porcine pericardial tissue has the promise to outperform fixed tissue and remodel, but the decellularization process has been shown to damage the collagen structure and reduce mechanical integrity of the tissue. Therefore, a comparison of uniaxial tensile properties was performed on decellularized, decellularized-sterilized, fixed, and native porcine pericardial tissue, versus native valve leaflet cusps...
May 10, 2018: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/29748197/minimally-invasive-delivery-of-hydrogel-encapsulated-amiodarone-to-the-epicardium-reduces-atrial-fibrillation
#15
Jose R Garcia, Peter F Campbell, Gautam Kumar, Jonathan J Langberg, Liliana Cesar, Juline N Deppen, Eric Y Shin, Neal K Bhatia, Lanfang Wang, Kai Xu, Frank Schneider, Brian Robinson, Andrés J García, Rebecca D Levit
BACKGROUND: Atrial fibrillation (AF) is the most common cardiac arrhythmia. Although treatment options for AF exist, many patients cannot be maintained in normal sinus rhythm. Amiodarone is an effective medication for AF but has limited clinical utility because of off-target tissue toxicity. METHODS: Here, we use a pig model of AF to test the efficacy of an amiodarone-containing polyethylene glycol-based hydrogel. The gel is placed directly on the atrial epicardium through the pericardial space in a minimally invasive procedure using a specially designed catheter...
May 2018: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/29747850/imaging-right-left-ventricular-interactions
#16
REVIEW
Mark K Friedberg
The impact of one ventricle on the adjacent ventricle plays a key role in cardiac function. Ventricular-ventricular interactions are based on the arrangement in-series of the circulation and common pericardium, interventricular septum, and myocardial tracts. Imaging, in particular echocardiography, plays a central role in characterizing these interactions through geometric indices, septal configuration and motion, Doppler flow, timing of events in the ventricles and alterations in strain, remodeling, and diastolic filling with altered loading of the contralateral ventricle...
May 2018: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29740837/increased-fetal-epicardial-fat-thickness-a-novel-ultrasound-marker-for-altered-fetal-metabolism-in-diabetic-pregnancies
#17
Mehmet O Akkurt, Ozhan M Turan, Sarah Crimmins, Christopher R Harman, Sifa Turan
OBJECTIVE: To evaluate whether fetal epicardial fat thickness (EFT) differs in diabetic and nondiabetic pregnant women. METHODS: Retrospective case-control study of pregnancies between 24 and 36 weeks complicated by preexisting (PDM) or gestational (GDM) diabetes mellitus, matched one to one with controls for body mass index and gestational age (GA). Epicardial fat was identified as the hypoechogenic area between myocardium and visceral pericardium over the right ventricle and its thickness was measured by a single observer blinded to clinical condition and outcomes...
May 8, 2018: Journal of Clinical Ultrasound: JCU
https://www.readbyqxmd.com/read/29738755/durability-at-19-years-of-quadrangular-resection-with-annular-plication-for-mitral-regurgitation
#18
Elisabetta Lapenna, Benedetto Del Forno, Ludovica Amore, Stefania Ruggeri, Giuseppe Iaci, Davide Schiavi, Igor Belluschi, Marta Bargagna, Ottavio Alfieri, Michele De Bonis
BACKGROUND: To report the long-term (19 years) clinical and echocardiographic results of the quadrangular resection with annular plication and annuloplasty. METHODS: A hundred forty-five consecutive patients (mean age 58±11.1years, LVEF 59±9.5%) with severe degenerative mitral regurgitation due to posterior leaflet prolapse/flail, underwent quadrangular resection of the posterior leaflet combined with ring (127 patients,87.5%) or pericardium (18 patients,12.5%) annuloplasty...
May 5, 2018: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/29737598/-blind-pericardiocentesis-a-comparison-of-different-puncture-directions
#19
Nils Petri, Babett Ertel, Tobias Gassenmaier, Björn Lengenfelder, Thorsten A Bley, Wolfram Voelker
BACKGROUND: "Blind" pericardiocentesis is the standard procedure for emergency pericardial drainage when ultrasound guidance is unavailable. Under these circumstances, puncture site and needle direction are exclusively oriented according to certain anatomic landmarks. In the literature, different techniques for this "blind" method have been described. Goal of this retrospective study was to compare the potential success and complication rate of 13 simulated puncture directions...
May 8, 2018: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/29735219/clinical-update-in-pericardial-diseases
#20
REVIEW
Benjamin C Tuck, Matthew M Townsley
Patients with pericardial disease often require interventional therapies or surgery, making it essential for anesthesiologists to understand the altered physiology of these disease states and the resultant impact on perioperative management. The broad spectrum of syndromes involving the pericardium present with varying degrees of clinical significance, from asymptomatic presentations to life-threatening emergencies. Impaired diastolic filling of the heart represents a common theme of pericardial disease, with the rate of onset of pericardial pathology largely determining the extent of this impairment and subsequent severity of presentation...
April 3, 2018: Journal of Cardiothoracic and Vascular Anesthesia
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