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https://www.readbyqxmd.com/read/29684956/-clinical-utility-of-upper-urinary-tract-reconstruction-by-ileal-ureter-substitution
#1
Yoshinaga Okumura, Shusuke Akamatsu, Yoshiyuki Okada, Hiromitsu Negoro, Takashi Kobayashi, Naoki Terada, Toshinari Yamasaki, Yoshiyuki Matsui, Takahiro Inoue, Tomomi Kamba, Osamu Ogawa
We retrospectively reviewed the indications and outcomes of ileal-ureter substitution cases for complex ureteral reconstruction. We analyzed the patient clinical characteristics, outcomes, and complications of eight patients who had ileal ureter substitution surgery at Kyoto University Hospital between 2009 and 2016. The median patient age was 55.5 years (36-79), and the median follow up period was 25.5 months (7-85). Seven patients had unilateral ureteral obstruction (right:left=4:3), and one had bilateral ureteral obstruction...
March 2018: Hinyokika Kiyo. Acta Urologica Japonica
https://www.readbyqxmd.com/read/29682435/assessment-of-ventriculoperitoneal-shunt-function-using-ultrasound-characterization-of-valve-interface-oscillation-as-a-proxy
#2
April Aralar, Matthew Bird, Robert Graham, Beomseo Koo, Parag Chitnis, Siddhartha Sikdar, Mahesh Shenai
Objective Ventricular shunts are a mainstay of hydrocephalus treatment, but the detection of its clinical failure often relies on circumstantial evidence. A direct, non-interventional method for reliably evaluating cerebrospinal fluid (CSF) function does not exist due to the difficulty of measuring in vivo flow characteristics. The objective of this study is to apply a novel method of ultrasound monitoring to characterize the oscillation observed during pulsatile CSF flow and failure states in an in vitro and cadaveric model...
February 19, 2018: Curēus
https://www.readbyqxmd.com/read/29673851/the-use-of-allogeneic-cartilage-for-grafting-in-functional-and-reconstructive-rhinoplasty
#3
Andrew M Read-Fuller, David M Yates, Alaaaldin Radwan, Alexander M Schrodt, Richard A Finn
PURPOSE: Allogeneic cartilage grafting has multiple uses in rhinoplasty. Autogenous cartilage is frequently used in cases of nasal obstruction or reconstruction, but harvesting grafts can cause complications or might be contraindicated. Rhinoplasties of the patient with cleft might require costochondral grafts. Allogeneic rib is an effective and safe alternative to autogenous grafts, prevents complications, and obviates postoperative admission after rib harvest. MATERIALS AND METHODS: Patients who had allogeneic cartilage placed during functional or reconstructive rhinoplasty were studied from 2 institutions, including 19 who had functional rhinoplasty using allogeneic Cartiform patellar cartilage grafts and 15 patients who underwent reconstructive cleft rhinoplasty with allogeneic rib cartilage...
March 27, 2018: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29606641/is-transcatheter-aortic-valve-replacement-better-than-surgical-aortic-valve-replacement-in-patients-with-chronic-obstructive-pulmonary-disease-a-nationwide-inpatient-sample-analysis
#4
Tomo Ando, Oluwole Adegbala, Emmanuel Akintoye, Said Ashraf, Mohit Pahuja, Alexandros Briasoulis, Hisato Takagi, Cindy L Grines, Luis Afonso, Theodore Schreiber
BACKGROUND: Chronic obstructive pulmonary disease (COPD) patients are at increased risk of respiratory related complications after cardiac surgery. It is unclear whether transcatheter aortic valve replacement (TAVR) or surgical aortic valve replacement (SAVR) results in favorable outcomes among COPD patients. METHODS AND RESULTS: Patients were identified from the Nationwide Inpatient Sample database from 2011 to 2014. Patients with age ≥60, COPD, and either went transarterial TAVR or SAVR were included in the analysis...
April 1, 2018: Journal of the American Heart Association
https://www.readbyqxmd.com/read/29518534/tiara-valve-implantation-in-a-patient-with-previously-implanted-mono-disk-mechanical-aortic-prosthesis
#5
Enrico Ferrari, Luigi Biasco, Francesco Faletra, Anson Cheung, Marco Moccetti, Giovanni Pedrazzini, Stefanos Demertzis, Tiziano Moccetti
Transcatheter mitral valve replacement with the Tiara valve can be performed in inoperable patients with severe functional regurgitation. Risk of left ventricular outflow tract obstruction can be prevented using preoperative 3D imaging and 3D-printed models. However, in the case of mono-disk mechanical prostheses previously implanted in aortic position (Bjork-Shiley), there is an additional risk of mechanical interference leading to reduced leaflet motion and aortic valve dysfunction. Hereafter, we describe the case of a patient with a 27-mm mono-disk mechanical aortic valve implanted in 1978, a EuroSCORE II of 18%, and a Society of Thoracic Surgeon score (mortality) of 16% who successfully underwent a transapical Tiara valve implantation...
March 5, 2018: Seminars in Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29511849/role-of-mdct-imaging-in-planning-mitral-valve-intervention
#6
REVIEW
Rominder Grover, Mickael Ohana, Chesnal Dey Arepalli, Stephanie L Sellers, John Mooney, Shaw-Hua Kueh, Ung Kim, Philipp Blanke, Jonathon A Leipsic
PURPOSE OF REVIEW: Recent advancements in transcatheter valvular interventions have resulted in a growing demand for advanced cardiac imaging to help guide these procedures. RECENT FINDINGS: Both echocardiography and multi-detector computed tomography have played essential roles in the maturation of transcatheter aortic valve replacement and are now building on these experiences and helping inform the nascent field of transcatheter mitral interventions. Advanced imaging is essential to aid in the diagnosis and determination of the mechanism of mitral regurgitation...
March 6, 2018: Current Cardiology Reports
https://www.readbyqxmd.com/read/29466869/patient-specific-ct-based-3d-passive-fsi-model-for-left-ventricle-in-hypertrophic-obstructive-cardiomyopathy
#7
Long Deng, Xueying Huang, Chun Yang, Yunhu Song, Dalin Tang
Left ventricular outflow tract obstruction is observed in 70% of patients with hypertrophic cardiomyopathy, which occurs in about 1 of every 500 adults in the general population. It has been widely believed that the motion of the mitral valve, in particular, its systolic anterior motion (SAM), attributes significantly to such obstruction. For a better understanding of the mitral valve motion, a 3D patient-specific fluid-structure interaction model of the left ventricle from a patient with hypertrophic obstructive cardiomyopathy based on computed tomography (CT) scan images was proposed in this study...
February 2018: Computer Methods in Biomechanics and Biomedical Engineering
https://www.readbyqxmd.com/read/29435772/heart-failure-interventions-targeting-impaired-left-ventricles-in-structural-heart-disease
#8
REVIEW
Mitsunobu Kitamura, Tobias Schmidt, Karl-Heinz Kuck, Christian Frerker
PURPOSE OF REVIEW: Interventional techniques have been developed for a wide spectrum of mechanisms of heart failure (HF), especially in valvular heart disease and cardiomyopathies (ischaemic cardiomyopathy and hypertrophic cardiomyopathy). In this article, we review recent reports on catheter interventions to treat patients with HF. RECENT FINDINGS: Direct modification using the Parachute device and the REVIVENT-TC device for patients with impaired left ventricle with large infarct scars improves geometry and haemodynamic efficiency, resulting in a reduction of HF symptoms...
February 12, 2018: Current Cardiology Reports
https://www.readbyqxmd.com/read/29397472/gastrointestinal-bleeding-in-native-and-prosthetic-valve-disease
#9
REVIEW
Joseph L Blackshear
Gastrointestinal bleeding with severe aortic stenosis was originally described in the 1950s by Heyde, although for years, the association was debated. Further discovery of mechanisms and the ubiquity and severity of acquired von Willebrand syndrome in the left ventricular assist device therapy have removed any doubts. At this time, gastrointestinal bleeding from intestinal angiodysplasia in patients with turbulence-related proteolysis of the highest molecular weight multimers of von Willebrand factor is now known to occur in patients with aortic stenosis, and also subaortic obstruction and associated mitral insufficiency in hypertrophic cardiomyopathy, isolated mitral and aortic insufficiency, endocarditis, and in patients with prosthetic valve dysfunction, either from stenosis or insufficiency...
February 3, 2018: Current Treatment Options in Cardiovascular Medicine
https://www.readbyqxmd.com/read/29397128/dynamic-behaviour-of-the-soft-palate-during-nasal-positive-pressure-ventilation-under-anaesthesia-and-paralysis-comparison-between-patients-with-and-without-obstructive-sleep-disordered-breathing
#10
M Okuyama, S Kato, S Sato, J Okazaki, Y Kitamura, T Ishikawa, Y Sato, S Isono
BACKGROUND: Difficult mask ventilation is common and is known to be associated with sleep-disordered breathing (SDB). It is our hypothesis that the incidence of expiratory retropalatal (RP) airway closure (primary outcome) during nasal positive pressure ventilation (PPV) is more frequent in patients with SDB (apnea hypopnea index ≥5 h-1 ) than non-SDB subjects. METHODS: The severity of SDB was assessed before surgery using a portable sleep monitor. In anaesthetized and paralysed patients with (n=11) and without SDB (n=9), we observed the behaviour of the RP airway endoscopically during nasal PPV with the mouth closed and determined the dynamic RP closing pressure, which was defined as the highest airway pressure above which the RP airway closure was reversed...
January 2018: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/29326778/-double-ball-valve-mechanism-obstructing-both-right-ventricular-inflow-and-outflow-atypical-presentation-of-right-atrial-myxoma-presenting-as-right-ventricular-mass
#11
Tarun Kumar, Satyam Rajvanshi, Ajay Kumar Sharma, Neeraj Pandit
Large intracavitary masses such as those occupying most of a cardiac chamber and obstructing blood flow are not routinely encountered in clinical practice. The differential diagnosis includes neoplastic as well as nonneoplastic causes. Primary cardiac tumors by themselves are uncommon. We hereby report a rare case of a middle-aged female presenting with New York Heart Association Class III symptoms, whose transthoracic echocardiogram revealed a huge mass in right-sided chambers with a novel double ball valve type movement...
October 2017: Heart Views: the Official Journal of the Gulf Heart Association
https://www.readbyqxmd.com/read/29237457/the-role-of-src-erk1-2-kinases-in-inspiratory-resistive-breathing-induced-acute-lung-injury-and-inflammation
#12
Dimitrios Toumpanakis, Vyronia Vassilakopoulou, Ioanna Sigala, Panagiotis Zacharatos, Ioanna Vraila, Vassiliki Karavana, Stamatios Theocharis, Theodoros Vassilakopoulos
BACKGROUND: Inspiratory resistive breathing (IRB), a hallmark of obstructive airway diseases, is associated with large negative intrathoracic pressures, due to strenuous contractions of the inspiratory muscles. IRB is shown to induce lung injury in previously healthy animals. Src is a multifunctional kinase that is activated in the lung by mechanical stress. ERK1/2 kinase is a downstream target of Src. We hypothesized that Src is activated in the lung during IRB, mediates ERK1/2 activation and IRB-induced lung injury...
December 13, 2017: Respiratory Research
https://www.readbyqxmd.com/read/29171730/the-jupiter-registry-one-year-outcomes-of-transapical-aortic-valve-implantation-using-a-second-generation-transcatheter-heart-valve-for-aortic-regurgitation
#13
Miriam Silaschi, Lenard Conradi, Olaf Wendler, Friederike Schlingloff, Utz Kappert, Ardawan J Rastan, Hardy Baumbach, David Holzhey, Walter Eichinger, Ralf Bader, Hendrik Treede
OBJECTIVES: We present 1-year outcomes of the post-market registry of a next-generation transcatheter heart valve used for aortic regurgitation (AR). BACKGROUND: Transcatheter aortic valve replacement (TAVR) is routine in high-risk patients with aortic stenosis but is not recommended for AR. The JenaValve™ (JenaValve Technology GmbH, Munich, Germany) overcomes technical challenges in AR patients through a leaflet clipping mechanism. METHODS: The JenaValve EvalUation of Long Term Performance and Safety In PaTients with SEvere Aortic Stenosis oR Aortic Insufficiency (JUPITER) Registry is a European study to evaluate safety and effectiveness of this THV...
November 24, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/29092121/obstructive-thrombosis-of-left-sided-mechanical-heart-valves-clinical-profile-and-thrombolytic-therapy
#14
Arumugam Chandrakasu, Avinash Jayachandran, Pradeep Gopinath Nayar, Chokkalingam Meyyappan, Ganesh Narayan, Ahamed Basha Abdul Bari, Prince Johnson Samuel
BACKGROUND: Thrombosis of a mechanical prosthetic heart valve is a potentially life-threatening complication associated with a high mortality. Although thrombolytic therapy has been considered highly beneficial in this situation, very few studies have been conducted to monitor the effectiveness of such thrombolytic therapy among Asian populations. Hence, the study aim was to evaluate the clinical profile, efficacy and safety of the thrombolytic agent streptokinase (SK) in patients with obstructive thrombosis of a left-sided mechanical heart valve...
May 2017: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/28986731/successful-management-of-prolonged-venovenous-extracorporeal-membrane-oxygenation-in-an-octogenarian
#15
Masami Takagaki, Hiroki Yamaguchi, Shinichi Mitsuyama, Tasuku Kadowaki, Takeshi Ando
Venovenous extracorporeal membrane oxygenation is now an established treatment for acute respiratory distress syndrome. However, this treatment remains rare in octogenarians and is associated with poor outcomes. An 81-year-old man with a history of chronic obstructive pulmonary disease and heavy smoking underwent mitral and tricuspid valve repair and the Maze procedure for mitral and tricuspid regurgitation and paroxysmal atrial fibrillation. Although he was extubated the following day, his postoperative course was complicated with pneumonia followed by acute respiratory distress syndrome...
December 2017: Journal of Artificial Organs: the Official Journal of the Japanese Society for Artificial Organs
https://www.readbyqxmd.com/read/28982562/prosthetic-mitral-surgical-valve-in-transcatheter-aortic-valve-replacement-recipients-a-multicenter-analysis
#16
Ignacio J Amat-Santos, Carlos Cortés, Luis Nombela Franco, Antonio J Muñoz-García, Jose Suárez De Lezo, Enrique Gutiérrez-Ibañes, Vicenç Serra, Mariano Larman, Raúl Moreno, Jose M De La Torre Hernandez, Rishi Puri, Pilar Jimenez-Quevedo, José M Hernández García, Juan H Alonso-Briales, Bruno García, Dae-Hyun Lee, Paol Rojas, Teresa Sevilla, Renier Goncalves, Silvio Vera, Itziar Gómez, Josep Rodés-Cabau, José A San Román
OBJECTIVES: The aim of this study was to determine the prognosis and specific complications of patients with prosthetic mitral valves (PMVs) undergoing transcatheter aortic valve replacement (TAVR). BACKGROUND: TAVR is performed relatively often in patients with PMVs, but specific risks are not well described. METHODS: A multicenter analysis was conducted, including patients with severe symptomatic aortic stenosis who underwent TAVR at 10 centers...
October 9, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28912041/postoperative-b-type-natriuretic-peptide-monitoring-for-the-assessment-of-the-magnitude-of-shunting-through-blalock-taussig-anastomoses
#17
Cristian Mirabile, Alessandra Mazzola, Liana Valeanu, Vanessa Lopez-Lopez, Claudio Barbanti, Camilla Biselli, Carole Hennequin, Sophie Malekzadeh-Milani, Mirela Bojan
BACKGROUND: The Modified Blalock-Taussig shunt (MBTS) is the most common palliative operation performed in patients with complex cardiac defects. Postoperative morbidity and mortality rates are high, mainly due to shunt thrombosis and over-shunting. Over-shunting may be difficult to identify postoperatively based on conventional criteria. Since plasma B-type natriuretic peptide (BNP) concentrations correlate with the magnitude of shunting in various left-to-right shunt cardiac defects, we investigated its ability to identify postoperative MBTS over-shunting...
December 15, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28898345/-endoscopic-lung-volume-reduction-in-advanced-pulmonary-emphysema-initial-experience-in-chile
#18
Sebastián Fernández-Bussy, Gonzalo Labarca, Iván Caviedes, Hiren J Mehta, Michael Jantz, Adnan Majid
Chronic obstructive pulmonary disease (COPD) has no curative treatment, and in moderate to advanced stages, functional parameters and quality of life are affected. Lung volume reduction improves respiratory parameters and quality of life of these patients. Endoscopic lung volume reduction is a minimally invasive procedure that uses endobronchial valves or coils. Valves are unidirectional, blocking the air from entering the target lobe during inspiration, allowing the exit of air and secretions during expiration...
May 2017: Revista Médica de Chile
https://www.readbyqxmd.com/read/28885112/management-of-failing-bioprosthesis-in-elderly-patients-who-have-undergone-transcatheter-aortic-valve-replacement
#19
REVIEW
Ozan M Demir, Neil Ruparelia, Angela Frame, Sayan Sen, Ghada W Mikhail, Michael Fertleman, Iqbal S Malik
Transcatheter aortic valve replacement (TAVR) has revolutionized the treatment of symptomatic aortic stenosis. The number of TAVR procedures is expected to increase exponentially in the next decade. Therefore, patients will inevitably present with signs and symptoms attributable to TAVR bioprosthesis failure many years after an acutely successful procedure. Their management will become increasing important moving forward. Areas covered: The aim of this article is to review the causes of bioprosthesis failure and outline optimal management strategies in elderly patients...
October 2017: Expert Review of Medical Devices
https://www.readbyqxmd.com/read/28856722/the-doppler-paradox
#20
Ioannis Ntalas, Júlia Karády, Stam Kapetanakis, Ronak Rajani
Obstructive prosthetic valve thrombosis (PVT) is a rare but severe complication that usually occurs in the presence of suboptimal anticoagulation. Although fluoroscopy is commonly used to detect abnormal leaflet motion as a surrogate marker for PVT, its inability to directly visualize adjacent tissue and valve physiology leaves it susceptible to miss clinically important PVT. In this manuscript, we report the case of a 54-year-old woman with a mechanical mitral valve who was admitted to our institute with exertional dyspnea...
December 2017: Echocardiography
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