keyword
MENU ▼
Read by QxMD icon Read
search

small aortic root

keyword
https://www.readbyqxmd.com/read/28228313/significant-intra-valvular-pressure-loss-across-epic-supra-and-perimount-magna-supra-annular-designed-aortic-bioprostheses-in-patients-with-normal-aortic-size
#1
Jagdish C Mohan, Vishwas Mohan, Madhu Shukla, Arvind Sethi
Doppler-derived trans-prosthetic gradients are higher and the estimated effective valve area is smaller than the catheter-derived and directly measured hemodynamic values, mostly due to pressure recovery phenomenon. Pressure recovery to a varying extent is common to all prosthetic heart valves including bioprostheses. Pressure recovery-related differences are usually small except in patients with bileaflet metallic prosthesis, wherein high-pressure local jets across central orifice have been documented since long back and also in patients with narrow aortic root...
January 2017: Indian Heart Journal
https://www.readbyqxmd.com/read/28129470/the-water-channel-aqp1-is-expressed-in-human-atherosclerotic-vascular-lesions-and-aqp1-deficiency-augments-angiotensin-ii-induced-atherosclerosis-in-mice
#2
Pamela Wintmo, Søren H Johansen, Pernille B L Hansen, Jes S Lindholt, Sigitas Urbonavicius, Lars M Rasmussen, Peter Bie, Boye L Jensen, Jane Stubbe
AIM: The water channel aquaporin 1 (AQP1) promotes endothelial cell migration. It was hypothesized that AQP1 promotes neovascularization and growth of atherosclerotic plaques. METHODS: AQP1 immunoreactivity and protein abundance was examined in human and murine atherosclerotic lesions and aortic aneurysms. Apolipoprotein E (ApoE) knockout (-/-) and AQP1-/-ApoE-/- were developed and fed western diet (WD) for 8 and 16 weeks to accelerate the atherosclerosis process...
January 27, 2017: Acta Physiologica
https://www.readbyqxmd.com/read/28110299/small-aortic-root-in-aortic-stenosis-a-bystander-of-atherosclerotic-burden
#3
Julien Magne, Dania Mohty, Victor Aboyans
No abstract text is available yet for this article.
January 20, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28104951/aortic-atresia-with-normal-sized-left-ventricle
#4
Priya Jagia, Arun Sharma, Saurabh K Gupta, Munish Guleria
Aortic atresia with an associated ventricular septal defect and adequate sized left ventricle is extremely rare. We present two cases in which an alternate diagnosis was suggested on echocardiography because the hypoplastic aortic trunk was missed due to its small caliber. The final diagnosis was, however, clinched on dual source computed tomography, which not only showed the thin aortic trunk but also clearly depicted the coronary artery origins from the hypoplastic aortic root. To the best of our knowledge, use of multi-detector computed tomography in aortic atresia with well developed left ventricle has not been reported in literature till date...
October 2016: Indian Journal of Radiology & Imaging
https://www.readbyqxmd.com/read/28092288/sutureless-aortic-valves-who-is-the-right-patient
#5
Amine Mazine, Christopher Bonneau, Dimos Karangelis, Bobby Yanagawa, Subodh Verma, Daniel Bonneau
PURPOSE OF REVIEW: Sutureless aortic valve replacement (AVR) has emerged as an alternative to traditional AVR for patients with aortic stenosis who present a higher surgical risk, such as the elderly, or those with small or highly calcified aortic roots. With transcatheter aortic valve implantation - the other major AVR alternative - being used in increasingly lower-risk patients, the place of sutureless valves in the AVR landscape needs to be defined. In this review, we discuss recent data and expert opinion as it pertains to the subject of sutureless AVR...
March 2017: Current Opinion in Cardiology
https://www.readbyqxmd.com/read/28057898/a-retrospective-study-of-degenerative-mitral-valve-disease-in-small-breed-dogs-survival-and-prognostic-variables
#6
Hyun-Tae Kim, Sei-Myoung Han, Woo-Jin Song, Boeun Kim, Mincheol Choi, Junghee Yoon, Hwa-Young Youn
Small-breed (n= 168 dogs; weight < 15 kg) diagnosed with MMVD based on a routine clinical examination, radiology, an electrocardiogram, and echocardiography at the Seoul National University Veterinary Medical Teaching Hospital were included. The survival periods were ascertained and a significant difference was observed in the survival rates between the International Small Animal Cardiac Health Council classes. The mean follow-up period was 14.3 ± 12.1 months. Univariate analysis revealed that dyspnea, pulmonary edema, and vertebral heart score were significantly associated with the survival times (P < 0...
January 4, 2017: Journal of Veterinary Science
https://www.readbyqxmd.com/read/28043449/stentless-vs-stented-aortic-valve-bioprostheses-in-the-small-aortic-root
#7
Laurens W Wollersheim, Wilson W Li, Abdullah Kaya, Berto J Bouma, Antoine H Driessen, Wim J van Boven, Jan van der Meulen, Bas A de Mol
In patients with a small aortic root undergoing aortic valve replacement (AVR), the Freedom SOLO bioprosthesis may be the ideal prosthesis because of its stentless design and supra-annular implantation. This study investigated if the stentless Freedom SOLO has an advantage when compared with a stented bioprosthesis in patients with a small aortic root. From April 2005-July 2014, 269 consecutive patients underwent AVR with either a Freedom SOLO (n = 76) or Mitroflow (n = 193) bioprosthesis size 19mm or 21mm, respectively...
July 2016: Seminars in Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28028424/aortic-root-enlargement-or-sutureless-valve-implantation
#8
Nikolaos G Baikoussis, Panagiotis Dedeilias, Michalis Argiriou
Aortic valve replacement (AVR) in patients with a small aortic annulus is a challenging issue. The importance of prosthesis-patient mismatch (PPM) post aortic valve replacement (AVR) is controversial but has to be avoided. Many studies support the fact that PPM has a negative impact on short and long term survival. In order to avoid PPM, aortic root enlargement may be performed. Alternatively and keeping in mind that often some comorbidities are present in old patients with small aortic root, the Perceval S suturelles valve implantation could be a perfect solution...
December 15, 2016: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/27884484/ross-hybrid-arch-and-frozen-elephant-trunk-reconstruction-for-late-complications-of-bicuspid-aortic-valve-and-aortopathy
#9
Matthew Valdis, Gaetano DeRose, Linrui Guo, Michael W A Chu
Young patients with bicuspid aortic valve disease and aortopathy remain a clinical challenge, with many requiring multiple corrective operations throughout their lifetimes. Innovative surgical approaches are often required to address complex aortic pathologic conditions but leave patients at risk for reintervention, lifelong anticoagulation, and suboptimal hemodynamics. We describe an active 44-year-old female triathlete with recurrent bicuspid aortic stenosis, a small aortic root, a hypoplastic aortic arch and complex distal arch, and a descending aortic aneurysm, who underwent a single-stage reconstruction with a combined Ross procedure, hybrid arch, and frozen elephant trunk reconstruction...
December 2016: Canadian Journal of Cardiology
https://www.readbyqxmd.com/read/27867654/patient-prosthesis-mismatch-surgical-aortic-valve-replacement-versus-transcatheter-aortic-valve-replacement-in-high-risk-patients-with-aortic-stenosis
#10
COMMENT
Ravi K Ghanta, Irving L Kron
Patient prosthesis mismatch (PPM) can occur when a prosthetic aortic valve has an effective orifice area (EOA) less than that of a native valve. A recent study by Zorn and colleagues evaluated the incidence and significance of PPM in high risk patients with severe aortic stenosis who were randomized to transcatheter aortic valve replacement (TAVR) or surgical aortic valve replacement (SAVR). TAVR is associated with decreased incidence of severe PPM compared to traditional SAVR valves. Severe PPM increases risk for death at 1 year postoperatively in high risk patients...
October 2016: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/27861745/clinical-signs-of-fibrosis-in-small-intestinal-neuroendocrine-tumours
#11
K Daskalakis, A Karakatsanis, P Stålberg, O Norlén, P Hellman
BACKGROUND: In patients with small intestinal neuroendocrine tumours (SI-NETs), serotonin and other cytokines released from tumour cells may induce fibrosis, leading to carcinoid heart disease and abdominal fibrotic reactions. The aim of this study was to assess the prevalence, clinical complications and management of this reaction in the abdomen. METHODS: This was a retrospective cohort study of patients with SI-NETs diagnosed between 1985 and 2015. Clinical data, outcomes, radiological findings, and surgical and radiological interventions were reviewed...
January 2017: British Journal of Surgery
https://www.readbyqxmd.com/read/27847067/ascending-aortic-replacement-and-sutureless-valve-in-a-failed-stentless-aortic-prosthesis-a-bailout-option
#12
Mohamed Marzouk, Ganesh Shanmugam, Dimitri Kalavrouziotis, Siamak Mohammadi
Aortic valve replacement with a Perceval sutureless bioprosthesis is a viable rescue option for a failed aortic stentless prosthesis. However, a dilated sinotubular junction and ascending aorta are reported as a contraindication for this technique. We describe an aortic sutureless valve implantation in a patient with a dilated ascending aorta and small aortic root after Dacron graft replacement of the ascending aorta in a failed aortic stentless bioprosthesis.
December 2016: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/27738756/geometrical-characteristics-of-aortic-root-and-left-ventricular-dysfunction-in-aortic-stenosis-quantification-of-256-slice-coronary-ct-angiography
#13
Michinobu Nagao, Yuzo Yamasaki, Takeshi Kamitani, Satoshi Kawanami, Masatoshi Kondo, Hiromichi Sonoda, Taisuke Fujioka, Hiroshi Honda
The purpose of this study is to analyze the geometrical characteristics of aortic root and left ventricular (LV) function in aortic stenosis (AS) using 256-slice coronary-computed tomography angiography (CCTA). Retrospective ECG-gated 256-slice CCTA data from 32 patients with tricuspid AS scheduled for aortic valve replacement, and 11 controls were analyzed. Aortic root geometry was measured using multiplanar reconstruction CT images. CCTA data set was transformed into 100 phases/cycle using motion coherence image processing...
October 13, 2016: Heart and Vessels
https://www.readbyqxmd.com/read/27729705/selective-heart-brain-and-body-perfusion-in-open-aortic-arch-replacement
#14
Sven Maier, Fabian Kari, Bartosz Rylski, Matthias Siepe, Christoph Benk, Friedhelm Beyersdorf
Open aortic arch replacement is a complex and challenging procedure, especially in post dissection aneurysms and in redo procedures after previous surgery of the ascending aorta or aortic root. We report our experience with the simultaneous selective perfusion of heart, brain, and remaining body to ensure optimal perfusion and to minimize perfusion-related risks during these procedures. We used a specially configured heart-lung machine with a centrifugal pump as arterial pump and an additional roller pump for the selective cerebral perfusion...
September 2016: Journal of Extra-corporeal Technology
https://www.readbyqxmd.com/read/27641297/management-of-small-aortic-annulus-in-the-era-of-sutureless-valves-a-comparative-study-among-different-biological-options
#15
Aly Ghoneim, Ismail Bouhout, Philippe Demers, Amine Mazine, Mary Francispillai, Ismail El-Hamamsy, Michel Carrier, Yoan Lamarche, Denis Bouchard
OBJECTIVE: Aortic valve replacement (AVR) in patients with a small aortic annulus is a challenging problem. The objective of this study was to compare 4 surgical approaches in terms of hemodynamics and perioperative outcomes. METHODS: A retrospective single-center study included 351 consecutive patients with a small aortic annulus (≤21 mm) who underwent aortic valve surgery between January 2007 and December 2014. Surgical techniques included standard AVR in 259 (74%) patients, aortic root enlargement in 20 (6%), implantation of a stentless bioprosthesis in 23 (6%), and sutureless AVR in 49 (13%)...
October 2016: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/27591390/3d-physiological-model-of-the-aortic-valve-incorporating-small-coronary-arteries
#16
Hossein Mohammadi, Raymond Cartier, Rosaire Mongrain
The diseases of the coronary arteries and the aortic root are still the leading causes of mortality and morbidity worldwide. In this study, a 3D global fluid-structure interaction of the aortic root with inclusion of anatomically inspired small coronary arteries using the finite element method is presented. This innovative model allows to study the impact and interaction of root biomechanics on coronary hemodynamics and brings a new understanding to small coronary vessels hemodynamics. For the first time, the velocity profiles and shear stresses are reported in distal coronary arteries as a result of the aortic flow conditions in a global fluid-structure interaction model...
September 3, 2016: International Journal for Numerical Methods in Biomedical Engineering
https://www.readbyqxmd.com/read/27563541/evolution-of-surgical-therapy-for-stanford-acute-type-a-aortic-dissection
#17
REVIEW
Peter Chiu, D Craig Miller
Acute type A aortic dissection (AcA-AoD) is a surgical emergency associated with very high morbidity and mortality. Unfortunately, the early outcome of emergency surgical repair has not improved substantially over the last 20 years. Many of the same debates occur repeatedly regarding operative extent and optimal conduct of the operation. The question remains: are patients suffering from too large an operation or too small? The pendulum favoring routine aortic valve resuspension, when feasible, has swung towards frequent aortic root replacement...
July 2016: Annals of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/27544288/comparison-of-the-performance-of-a-sutureless-bioprosthesis-with-two-pericardial-stented-valves-on-small-annuli-an-in%C3%A2-vitro-study
#18
Giordano Tasca, Riccardo Vismara, Andrea Mangini, Claudia Romagnoni, Monica Contino, Alberto Redaelli, Gianfranco Beniamino Fiore, Carlo Antona
BACKGROUND: Aortic valve replacement has evolved recently with the development of the sutureless bioprosthesis. One such valve is the Perceval bioprosthesis, which is built by mounting leaflets of bovine pericardium to a thin stent; this approach has the potential to provide an excellent fluid dynamic performance. We undertook an in vitro study to compare the hydrodynamic performance of the sutureless bioprosthesis with two standard pericardial stented bioprostheses (Crown and Magna)...
January 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/27491438/small-aortic-root-in-aortic-valve-stenosis-clinical-characteristics-and-prognostic-implications
#19
Edda Bahlmann, Dana Cramariuc, Jan Minners, Mai Tone Lønnebakken, Simon Ray, Christa Gohlke-Baerwolf, Christoph A Nienaber, Nikolaus Jander, Reinhard Seifert, John B Chambers, Karl Heinz Kuck, Eva Gerdts
AIMS: In aortic valve stenosis (AS), having a small aortic root may influence both the assessment of AS severity and the treatment strategy. The aim was to test the prognostic implications of having a small aortic root in AS within a large prospective study. METHODS AND RESULTS: We used data from 4.3-year follow-up of 1560 patients with asymptomatic, initially mostly moderate AS enrolled in the Simvastatin and Ezetimibe in Aortic Stenosis study. A small aortic root was defined as inner aortic sinotubular junction diameter indexed for body height <1...
August 3, 2016: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/27477802/hamartomatous-polyps-a-clinical-and-molecular-genetic-study
#20
REVIEW
Anne Marie Jelsig
Hamartomatous polyps (HPs) in the gastrointestinal (GI) tract are rare compared to other types of GI polyps, yet they are the most common type of polyp in children. The symptoms are usually rectal bleeding, abdominal pain, obstipation, anaemia, and/or small bowel obstruction. The polyps are typically removed concurrently with endoscopy when located in the colon, rectum, or stomach, whereas polyps in the small bowel are removed during push-enteroscopy, device-assisted enteroscopy, or by surgery. HPs can be classified as juvenile polyps or Peutz-Jeghers polyps based on their histopathological appearance...
August 2016: Danish Medical Journal
keyword
keyword
71464
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"