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https://www.readbyqxmd.com/read/29912207/improved-registration-of-3d-ct-angiography-with-x-ray-fluoroscopy-for-image-fusion-during-transcatheter-aortic-valve-implantation
#1
Ina Vernikouskaya, Wolfgang Rottbauer, Julia Seeger, Birgid Gonska, Jochen Wöhrle, Volker Rasche
The fusion of 3D anatomical models derived from high-fidelity pre-interventional computed tomography angiography (CTA), and x-ray (XR) fluoroscopy to facilitate anatomical guidance is of huge interest for complex cardiac interventions like TAVI procedures with cerebral protection. Co-registration of CTA and XR has been introduced either based on additional intraoperative non-/contrast-enhanced cone-beam computed tomography (CBCT) or two separate aortograms. With the related increase of radiation exposure and/or contrast agent (CA) dose, a potential additional risk for the patient is introduced...
June 3, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29911399/clinical-outcome-of-takotsubo-cardiomyopathy-diagnosed-with-or-without-coronary-angiography
#2
Naoki Misumida, Gbolahan O Ogunbayo, Sun Moon Kim, Ahmed Abdel-Latif, Khaled M Ziada, Vincent L Sorrell
Takotsubo cardiomyopathy (TC) is definitively diagnosed following the exclusion of acute coronary syndrome. We aimed to examine the rate of coronary angiography in patients diagnosed with TC and also the outcome of patients with TC diagnosed with or without coronary angiography. We analyzed the National Inpatient Sample database from 2010 to 2014 and identified patients hospitalized with a primary diagnosis of TC. We compared in-hospital mortality between patients who underwent coronary angiography and those who did not...
January 1, 2018: Angiology
https://www.readbyqxmd.com/read/29910551/aortocaval-fistula-presenting-as-type-2-acute-myocardial-infarction-in-a-patient-with-severe-arteriopathy
#3
Vivekanand Rajendran, Krishnaswamy Sundararajan, Alice Sawka
Aortocaval fistulas (ACFs) are rare with varied etiologies. Symptoms can be acute or delayed with predominant manifestations being high output cardiac failure. Acute coronary syndrome due to ACF has not been widely reported. We present a case of a 68-year-old male who presented with signs and symptoms suggestive of acute coronary syndrome. This was confirmed by electrocardiogram changes and a rise in cardiac enzymes. A large abdominal aortic aneurysm was diagnosed initially by imaging without evidence of leak or rupture...
May 2018: Indian Journal of Critical Care Medicine
https://www.readbyqxmd.com/read/29909213/pipeline-embolization-device-flow-diversion-for-a-dissecting-ruptured-posterior-cerebral-artery-aneurysm-in-a-pediatric-patient
#4
Murillo Cunegatto-Braga, Brian Hogan, Pedro Aguilar-Salinas, Alexandra D Beier, Ricardo A Hanel
BACKGROUND: Intracranial aneurysms(IAs) are rare in the pediatric population and are usually considered difficult to treat with traditional microsurgery due to their complex morphology. Endovascular techniques have become the standard option for treating IAs in adults. More recently, flow diverters such as the Pipeline Embolization Device(PED) are being widely adopted for unruptured IAs with safety and efficacy in adults, yet their use in the pediatric population is not well defined. In this paper we present a pediatric patient with a ruptured PCA aneurysm successfully treated with a PED and a review of the literature of the current status of PED use in this subset of patients...
June 14, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29908689/early-postoperative-undernutrition-following-aortic-valve-replacement-surgery
#5
Agnès Sallé, Emilie Dalmayrac, Christophe Baufreton
BACKGROUND: Experiencing loss of appetite after cardiac surgery is often noted during daily care and has been described by several studies. However, no information is available on either energy needs or spontaneous food intake following aortic valve replacement surgery. The goal of this study was to assess the risk of early postoperative undernutrition following aortic valve replacement in a group of patients who were preoperatively well-nourished. METHODS: Anthropometrics data (body mass index, fat free mass index, albuminemia and prealbuminemia, extracellular water), energy balance and appetite were assessed in a cross-over prospective observational study...
August 2018: Clinical Nutrition ESPEN
https://www.readbyqxmd.com/read/29907418/long-term-experience-with-a-mandatory-clinical-decision-rule-and-mandatory-d-dimer-in-the-evaluation-of-suspected-pulmonary-embolism
#6
Guy W Soo Hoo, Emily Tsai, Sondra Vazirani, Zhaoping Li, Bruce M Barack, Carol C Wu
PURPOSE: This study evaluated the long-term effectiveness of mandatory assignment of both a clinical decision rule (CDR) and highly sensitive d-dimer in the evaluation of patients with suspected pulmonary embolism (PE). MATERIALS AND METHODS: Institutional guidelines with a CDR and highly sensitive d-dimer were embedded in an order entry menu with mandatory assignment of key components before ordering a CT pulmonary angiogram (CTPA). Data were retrospectively extracted from the electronic health record...
June 12, 2018: Journal of the American College of Radiology: JACR
https://www.readbyqxmd.com/read/29905587/a-novel-approach-using-computed-tomography-angiograms-to-predict-sternotomy-or-complicated-anastomosis-in-patients-undergoing-robotically-assisted-minimally-invasive-direct-coronary-artery-bypass
#7
Richard C Cook, Anthony Y Fung, Edward D Percy, John R Mayo
OBJECTIVE: Robotically assisted minimally invasive direct coronary artery bypass is an alternative to sternotomy-based surgery in properly selected patients. Identifying the left anterior descending artery when it is deep in the epicardial fat can be particularly challenging through a 5- to 6-cm mini-thoracotomy incision. The objective of this study was to evaluate a technique for predicting conversion to sternotomy or complicated left anterior descending artery anastomosis using preoperative cardiac-gated computed tomography angiograms...
June 14, 2018: Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery
https://www.readbyqxmd.com/read/29904464/inferior-vena-cava-filter-placement-in-a-left-ivc-and-drainage-into-duplicated-svc-via-hemiazygous-continuation
#8
Jennifer Sweeney, Nainesh Parikh
Left-sided inferior vena cava (IVC) is the second most common anatomical anomaly of the IVC. We report a drainage pattern of the left IVC into a left duplicated superior vena cava (SVC) diagnosed during IVC filter placement consultation. The patient was a 66-year-old man with symptomatic hematuria caused by bladder cancer diagnosed with IVC thrombus and a left IVC found on a staging computed tomography urogram. The patient underwent computed tomography pulmonary angiogram, which ruled out pulmonary embolism, but demonstrated hemiazygous continuation of the left IVC above the diaphragm to meet a persistent left SVC (prevalence approximately 0...
April 2018: Radiology Case Reports
https://www.readbyqxmd.com/read/29904458/left-main-coronary-artery-diverticulum-case-report-and-review-of-the-literature
#9
Hassan Tahir, Timothy Kennedy, M Umer Awan, Bassam Omar, Christopher Malozzi, G Mustafa Awan
Coronary artery disease is a major cause of morbidity and mortality, and while most commonly is atherosclerotic, it can present with variable manifestations, both congenital and acquired. One such manifestation is coronary aneurysm, which is a localized dilatation of a coronary artery wall segment to greater than 1.5 times the adjacent normal segments. While a dilated outpouching of a coronary artery has been commonly classified as a coronary aneurysm, a non-dilated outpouching is rare and is referred to as a diverticulum, with only one previous case report in the literature...
June 2018: Cardiology Research
https://www.readbyqxmd.com/read/29904456/brockenbrough-braunwald-morrow-sign-an-evaluative-hemodynamic-maneuver-for-left-ventricular-outflow-tract-obstruction
#10
Glenmore Lasam
A case of a 77-year-old woman with a history of hypertrophic cardiomyopathy (HCM) presented with intermittent episodes of exertional dyspnea and chest discomfort. Her coronary angiogram revealed normal coronary arteries but with hypertrophic obstructive cardiomyopathy with an increasing left ventricular-aortic gradient on isoproterenol provocation. Likewise, an intensified gradient was observed after a premature ventricular contraction (PVC) that is distinguished as the Brockenbrough-Braunwald-Morrow sign substantiating confirmation of left ventricular outflow tract (LVOT) obstruction...
June 2018: Cardiology Research
https://www.readbyqxmd.com/read/29901605/case-report-of-retrograde-in-situ-fenestration-of-the-thoracic-stent-graft-with-reentry-device-in-a-patient-with-aortobronchial-fistula
#11
Alexander D Leung, Dai Yamanouchi
RATIONALE: In situ fenestration may be necessary to preserve branch arteries during thoracic endovascular aortic repair (TEVAR) when there is an inadequate landing zone. PATIENT CONCERNS: We report the case of a 74-year-old man presenting with recurrent hemoptysis. DIAGNOSES: Based on computed tomography (CT) angiogram and bronchoscopy, diagnosis was aorto-bronchial fistula. INTERVENTIONS: We performed retrograde in situ fenestration with reentry catheter (Pioneer Plus, Volcano Corporation, San Diego, CA) to preserve the left subclavian artery following TEVAR for aorto-bronchial fistula...
June 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29897432/indocyanine-green-fluorescence-angiography-of-the-reconstructed-gastric-tube-during-esophagectomy-efficacy-of-the-90-second-rule
#12
Y Kumagai, S Hatano, J Sobajima, T Ishiguro, M Fukuchi, K-I Ishibashi, E Mochiki, Ya Nakajima, H Ishida
By examining the reconstructed gastric tube during esophagectomy using indocyanine green fluorescence (ICG) angiography, we have established a '90-second rule' to confirm good blood perfusion at the anastomosis site. We examined the surgical outcome (rate of anastomotic leakage) of 70 consecutive patients who underwent esophagectomy with gastric tube reconstruction using ICG fluorescence angiography. All of the anastomoses were made in the area where less than 90 seconds was needed for enhancement using ICG fluorescence angiography (i...
June 12, 2018: Diseases of the Esophagus: Official Journal of the International Society for Diseases of the Esophagus
https://www.readbyqxmd.com/read/29891434/mid-term-outcomes-of-stent-assisted-balloon-induced-intimal-disruption-and-relamination-in-aortic-dissection-repair-stabilise-in-acute-type-b-aortic-dissection
#13
Elsa M Faure, Salma El Batti, Marwan Abou Rjeili, Pierre Julia, Jean-Marc Alsac
OBJECTIVES: This article reports mid-term results of 41 patients treated by the stent assisted balloon induced intimal disruption and relamination (STABILISE) technique for acute type B aortic dissection. METHODS: Between November 2011 and November 2017, 41 patients (10 male; median age 50 years) underwent proximal descending aortic stent grafting plus stent assisted balloon induced intimal disruption of the thoraco-abdominal aorta for acute type B aortic dissection...
June 8, 2018: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/29888339/oct-angiography-changes-in-the-3-parafoveal-retinal-plexuses-in-response-to-hyperoxia
#14
Ahmed M Hagag, Alex D Pechauer, Liang Liu, Jie Wang, Miao Zhang, Yali Jia, David Huang
Purpose: Use projection-resolved OCT angiography to investigate the autoregulatory response in the 3 parafoveal retinal plexuses under hyperoxia. Design: Prospective cohort study. Participants: Nine eyes from 9 healthy participants. Methods: One eye from each participant was scanned using a commercial spectral-domain OCT system. Two repeated macular scans (3 × 3 mm2 ) were acquired at baseline and during oxygen breathing...
April 2018: Ophthalmology retina
https://www.readbyqxmd.com/read/29887667/a-simulation-platform-using-3d-printed-neurovascular-phantoms-for-clinical-utility-evaluation-of-new-imaging-technologies
#15
S V Setlur Nagesh, J Hinaman, K Sommer, Z Xiong, C N Ionita, D R Bednarek, S Rudin
Modern 3D printing technology allows rapid prototyping of vascular phantoms based on an actual human patient with a high degree of precision. Using this technology, we present a platform to accurately simulate clinical views of neuro-endovascular interventions and devices. The neuro-endovascular interventional phantom has a 3D printed cerebrovasculature model derived from a patient CT angiogram and embedded inside a human skull providing bone attenuation. Acrylic layers were placed underneath and on top of the skull, simulating entrance and exit tissue attenuation and also simulating forward scatter...
February 2018: Proceedings of SPIE
https://www.readbyqxmd.com/read/29886573/severe-right-ventricular-hypertrophy-in-a-patient-with-extracardiac-and-intracardiac-shunt
#16
Mohit Pahuja, Aiden Abidov
Cardiac MRI is a complementary and confirmatory modality to a clinical echocardiography in diagnosing patients with complex adult congenital heart disease, especially in presence of great vessel abnormalities. We present a unique case of a patient with pulmonary hypertension (PH), severe right ventricular hypertrophy, Gerbode defect, and a large patent ductus arteriosus (PDA). The diagnosis of PDA was not visualized on prior serial echocardiograms and discovered on a comprehensive cardiac MRI/Chest MR angiogram...
June 10, 2018: Echocardiography
https://www.readbyqxmd.com/read/29886291/estimation-of-severity-of-moyamoya-disease-in-h-2-15-o-pet-compared-to-mri-and-angiography
#17
Constantin Roder, Eva Bürkle, Florian Heinrich Ebner, Marcos Tatagiba, Ulrike Ernemann, Alfred Buck, Philipp T Meyer, Nadia Khan
BACKGROUND: and Purpose: Moyamoya disease is a stenoocclusive disease of the circle of Willis with growth of pathological collaterals. We studied the indispensability of functional perfusion imaging (H2 15 O-PET with Acetazolamide (AZA) challenge) compared to conventional MRI and angiography for indication of cerebral revascularization of Moyamoya patients. METHODS: We performed a retrospective blinded analysis of individual imaging modalities (MRI, angiogram, PET) and scored each modality for the severity of disease in 21 untreated Moyamoya patients with 78 affected vascular territories...
June 7, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29886218/concomitant-hybrid-arch-vessel-reconstruction-and-intracranial-clot-retrieval-in-takayasu-s-arteritis-presenting-with-acute-cerebral-ischaemia-a-case-report
#18
Leonard Shan, David Goh, Timothy Wagner
INTRODUCTION: Type 1 Takayasu's arteritis (TA) predominantly affects the supra-aortic branches. Occlusive disease can cause catastrophic complications such as stroke and death. Open and endovascular techniques of revascularisation are described for extracranial disease. There is currently no default choice of surgical intervention. Furthermore, the management of distal intracranial complications has not been described. PRESENTATION OF CASE: A 25-year-old lady with known TA on immunosuppression presents with acute left middle cerebral artery (MCA) stroke...
June 7, 2018: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/29884488/lower-versus-upper-leg-saphenous-vein-composite-grafts-based-on-the-left-internal-thoracic-artery-a-randomized-study
#19
Hyoung Woo Chang, Ho Young Hwang, Jeong-Wook Seo, Ki-Bong Kim
OBJECTIVES: The "lower versus upper leg saphenous vein (SV) composite graft based on the left internal thoracic artery (ITA) for coronary artery bypass grafting" trial was designed to compare the histologic, immunohistochemical, and angiographic findings of lower versus upper leg SV composite grafts. METHODS: Twenty-six patients with multivessel coronary artery disease were prospectively randomized to undergo revascularization using a lower leg (n = 13) or upper leg (n = 13) SV composite graft based on the in situ left ITA...
April 11, 2018: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29883813/comparative-analysis-of-two-porcine-kidney-decellularization-methods-for-maintenance-of-functional-vascular-architectures
#20
Joao Paulo Zambon, In Kap Ko, Mehran Abolbashari, Jennifer Huling, Cara Clouse, Tae Hyoung Kim, Charesa Smith, Anthony Atala, James J Yoo
Kidney transplantation is currently the only definitive solution for the treatment of end-stage renal disease (ESRD), however transplantation is severely limited by the shortage of available donor kidneys. Recent progress in whole organ engineering based on decellularization/recellularization techniques has enabled pre-clinical in vivo studies using small animal models; however, these in vivo studies have been limited to short-term assessments. We previously developed a decellularization system that effectively removes cellular components from porcine kidneys...
June 5, 2018: Acta Biomaterialia
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