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Arterial catheters

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https://www.readbyqxmd.com/read/29655510/histopathological-validation-of-optical-coherence-tomography-findings-of-the-coronary-arteries
#1
REVIEW
Kenichi Fujii, Rika Kawakami, Seiichi Hirota
Optical coherence tomography (OCT), a catheter-based imaging modality for the visualization of coronary arteries, is widely used during percutaneous coronary intervention to improve the understanding of the anatomy of coronary artery stenosis and to elucidate the mechanisms of atherosclerosis. In this review, we provide a short description of the histopathological validations of OCT for visualizing atherosclerotic plaques and vascular healing response after drug-eluting stent (DES) implantation. Because OCT measures the intensity of light returning from within a tissue, tissue having a higher heterogeneity of optical index of refraction, such as microcalcification deposition and foam cell accumulation on the luminal surface, may exhibit stronger optical scattering that appears as a thin-cap fibroatheroma image...
April 11, 2018: Journal of Cardiology
https://www.readbyqxmd.com/read/29652685/blood-patch-in-a-jehovah-s-witness-case-report-of-a-novel-arterial-to-epidural-closed-circuit-technique
#2
Kevin R Olsen, Ashley L Screws, Stephen O Vose
Jehovah's Witness patients have unique perioperative challenges involving blood products. We describe the use of a novel method to maintain a closed circuit between a Jehovah's Witness patient's arterial blood and the epidural space while performing a blood patch for postdural puncture headache. Previously described methods have utilized venous catheters to maintain a closed circuit between the body and the epidural space. This is the first report we are aware of that utilizes a closed-circuit arterial blood supply to create an epidural blood patch in a Jehovah's Witness patient...
April 15, 2018: A&A practice
https://www.readbyqxmd.com/read/29651581/single-15-min-protocol-yields-the-same-cryoablation-size-and-margin-as-the-conventional-10-8-10-min-protocol-results-of-kidney-and-liver-swine-experiment
#3
John D Werner, Aline C Tregnago, George J Netto, Constantine Frangakis, Christos S Georgiades
INTRODUCTION: The objective was to determine the ablation size of a single 15-min freeze and compare it with the conventional 10-min freeze-8-min thaw-10-min freeze protocol. Secondary objectives were to determine the ablation margin and to ascertain whether islands of viable tissue remain within the ablation zone. MATERIALS AND METHODS: Five adult swine under general anesthesia were used. After surgical abdominal exposure, two ablations were performed in liver and two in kidney...
April 12, 2018: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/29649820/accuracy-of-acid-base-diagnoses-using-the-central-venous-blood-gas-in-the-medical-intensive-care-unit
#4
Sarah J Schrauben, Dan Negoianu, Cristiana Costa, Raphael M Cohen, Stanley Goldfarb, Barry D Fuchs, Jeffrey S Berns
BACKGROUND: Acid-base disturbances are frequent in critically ill patients. Arterial blood gas (ABG) is the gold standard in the diagnosis of these disturbances, but it is invasive with potential hazards. For patients with a central venous catheter, venous blood gas (VBG) sampling may be an alternative, less-invasive diagnostic tool. However, the accuracy of a central VBG-based acid-base disorder diagnosis compared to an ABG is unknown. The primary objective of this study was to assess the accuracy of a central VBG-based acid-base disorder diagnosis compared to the "gold standard" ABG in critically ill patients...
April 12, 2018: Nephron
https://www.readbyqxmd.com/read/29642755/successful-treatment-of-ventricular-arrhythmic-storm-with-percutaneous-coronary-intervention-and-catheter-ablation-in-a-patient-with-left-ventricular-assist-device
#5
Nihat Firat Sipahi, Arash Mehdiani, Diyar Saeed, Udo Boeken, Hisaki Makimoto, Artur Lichtenberg, Hannan Dalyanoglu
INTRODUCTION: Ventricular arrhythmias are common in patients with advanced heart failure, which may also persist after sufficient intensive therapy for heart failure even with a left ventricular assist device. Although most ventricular arrhythmias have no hemodynamic relevance during left ventricular assist device support, some patients suffer from right ventricular decompensation due to ventricular arrhythmias resulting in severe hemodynamic deterioration and poor clinical outcomes. METHODS: We describe herein an left ventricular assist device patient with refractory ventricular arrhythmic storm early after left ventricular assist device implantation...
April 1, 2018: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/29628942/clinical-and-angiographic-outcomes-with-the-combined-local-aspiration-and-retriever-in-the-north-american-solitaire-stent-retriever-acute-stroke-nasa-registry
#6
Tim W Malisch, Osama O Zaidat, Alicia C Castonguay, Franklin A Marden, Rishi Gupta, Chung-Huan J Sun, Coleman O Martin, William E Holloway, Nils Mueller-Kronast, Joey English, Italo Linfante, Guilherme Dabus, Hormozd Bozorgchami, Andrew Xavier, Ansaar T Rai, Michael Froehler, Aamir Badruddin, Thanh N Nguyen, M Asif Taqi, Michael G Abraham, Vallabh Janardhan, Hashem Shaltoni, Robin Novakovic, Albert J Yoo, Alex Abou-Chebl, Peng Roc Chen, Gavin W Britz, Ritesh Kaushal, Ashish Nanda, Raul G Nogueira
Background: Various techniques are used to enhance the results of mechanical thrombectomy with stent-retrievers, including proximal arrest with balloon guide catheter (BGC), conventional large bore proximal catheter (CGC), or in combination with local aspiration through a large-bore catheter positioned at the clot interface (Aspiration-Retriever Technique for Stroke [ARTS]). We evaluated the impact of ARTS in the North American Solitaire Acute Stroke (NASA) registry. Summary: Data on the use of the aspiration technique were available for 285 anterior circulation patients, of which 29 underwent ARTS technique, 131 CGC, and 125 BGC...
February 2018: Interventional Neurology
https://www.readbyqxmd.com/read/29628223/the-distal-left-radial-artery-access-for-coronary-angiography-and-intervention-a-new-era
#7
Karim M Al-Azizi, Amir S Lotfi
BACKGROUND: Patients' intra and post procedural comfort, quick recovery, as well as procedure success, are key elements for choosing the right arterial access site. Radial artery access has been of increasing interest since it was first described. Advanced treatments of coronary lesions, from primary percutaneous interventions during ST elevation myocardial infarction cases to chronic total occlusion cases, have been increasingly done through the radial access. Distal left trans radial artery (dlTRA) is a new technique first described by Kiemineij...
March 26, 2018: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/29627787/tyrosine-kinase-inhibitor-induced-rapidly-progressive-vasculopathy-after-intracranial-stent-placement
#8
Ching-Jen Chen, Brian J Sorace, Aria Shakeri, Min S Park, Andrew M Southerland, Bradford B Worrall, M Yashar S Kalani
Tyrosine kinase inhibitor (TKI) therapy for chronic myeloid leukemia (CML) has been associated with progressive peripheral arterial disease and, more recently, rare cases of intracranial vascular stenosis have been reported. We report the fourth case of TKI treatment associated intracranial vasculopathy and rapid progression of intracranial vascular stenosis following intracranial stent placement. This was a 49-year-old woman who developed right-sided weakness, paresthesias, numbness, and speech difficulties 7 years following TKI treatment for CML...
April 7, 2018: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/29626978/a-novel-scoring-system-for-predicting-adherent-placenta-in-women-with-placenta-previa
#9
Kenji Tanimura, Mayumi Morizane, Masashi Deguchi, Yasuhiko Ebina, Utaru Tanaka, Yoshiko Ueno, Kazuhiro Kitajima, Tetsuo Maeda, Kazuro Sugimura, Hideto Yamada
INTRODUCTION: Placenta previa (PP) is one of the most significant risk factors for adherent placenta (AP). The aim of this study was to evaluate the diagnostic efficacy of a novel scoring system for predicting AP in pregnant women with PP. METHODS: This prospective cohort study enrolled 175 women with PP. The placenta previa with adherent placenta score (PPAP score) is composed of 2 categories: (1) past history of cesarean section (CS), surgical abortion, and/or uterine surgery; and (2) ultrasonography and magnetic resonance imaging findings...
April 2018: Placenta
https://www.readbyqxmd.com/read/29625195/idiopathic-premature-ventricular-complexes-originating-from-the-distal-great-cardiac-vein-clinical-cardiac-and-electrophysiological-characteristics-and-catheter-ablation-outcome
#10
Wenkui Lv, Xianhui Zhou, Gulinuer Yiming, Ling Zhang, Qina Zhou, Yaodong Li, Qiang Xing, Jianghua Zhang, Yanmei Lu, Hongli Wang, Guiqiu Cao, Baopeng Tang
AIMS: Although catheter ablation for idiopathic ventricular arrhythmia (VA) has been generally well-established, VA originating from the great cardiac vein (GCV) may be clinically challenging due to its epicardial origin, proximity to coronary arteries and limited accessibility. The purpose of this study was to explore its electrophysiological characteristics and identify effective mapping/ablation strategies for idiopathic premature ventricular complexes (PVCs) originating from the GCV...
April 3, 2018: Life Sciences
https://www.readbyqxmd.com/read/29623382/-the-heart-catheter-table-is-not-the-operating-table-intraindividual-comparison-of-pulmonary-artery-pressures
#11
M U Ziegler, H Reinelt
BACKGROUND: Patients undergoing cardiac surgery need extensive and invasive monitoring, which needs to be individually adapted for each patient and requires a diligent risk-benefit analysis. The use of a pulmonary artery catheter (PAC) seems to be justifiable in certain cases; therefore, the preoperative diagnosis of pulmonary hypertension represents an indication for perioperative monitoring with PAC in the S3 guidelines of the German Society for Anesthesiology and Intensive Care Medicine (DGAI)...
April 5, 2018: Der Anaesthesist
https://www.readbyqxmd.com/read/29622991/tissue-characterization-of-non-culprit-intermediate-coronary-lesions-in-non-st-elevation-acute-coronary-syndromes
#12
Helmy Hassan Elghawaby, Mohamed Ashraf Shawky, Ahmed Hossam Mowafi, Akram Mohamed Abd-Elbary, Farouk Mostafa Faris
Background: Disruption of vulnerable plaques is the most common cause of acute coronary syndromes. Intravascular ultrasound facilitates cross-sectional imaging of coronary arteries. We aimed at using IVUS to investigate the morphology and tissue characteristics of atherosclerotic plaques of non-culprit intermediate coronary lesions in non-ST elevation ACS setting. Methods: IVUS assessment of sixty-one intermediate coronary lesions in twenty-eight patients with the diagnosis of Non ST elevation acute coronary syndromes...
March 2018: The Egyptian heart journal: (EHJ): official bulletin of the Egyptian Society of Cardiology
https://www.readbyqxmd.com/read/29622147/transcatheter-laceration-of-aortic-leaflets-to-prevent-coronary-obstruction-during-transcatheter-aortic-valve-replacement-concept-to-first-in-human
#13
Jaffar M Khan, Danny Dvir, Adam B Greenbaum, Vasilis C Babaliaros, Toby Rogers, Gabriel Aldea, Mark Reisman, G Burkhard Mackensen, Marvin H K Eng, Gaetano Paone, Dee Dee Wang, Robert A Guyton, Chandan M Devireddy, William H Schenke, Robert J Lederman
OBJECTIVES: This study sought to develop a novel technique called bioprosthetic or native aortic scallop intentional laceration to prevent coronary artery obstruction (BASILICA). BACKGROUND: Coronary artery obstruction is a rare but fatal complication of transcatheter aortic valve replacement (TAVR). METHODS: We lacerated pericardial leaflets in vitro using catheter electrosurgery, and tested leaflet splaying after benchtop TAVR. The procedure was tested in swine...
April 9, 2018: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/29622143/bioresorbable-scaffold-for-treatment-of-coronary-artery-lesions-intravascular-ultrasound-results-from-the-absorb-japan-trial
#14
Kozo Okada, Yasuhiro Honda, Hideki Kitahara, Kyuhachi Otagiri, Shigemitsu Tanaka, M Brooke Hollak, Paul G Yock, Jeffrey J Popma, Hajime Kusano, Wai-Fung Cheong, Krishnankutty Sudhir, Peter J Fitzgerald, Takeshi Kimura
OBJECTIVES: The aim of this study was to characterize post-procedural intravascular ultrasound (IVUS) findings in the ABSORB Japan trial, specifically stratified by the size of target coronary arteries. BACKGROUND: Despite overall noninferiority confirmed in recent randomized trials comparing bioresorbable vascular scaffolds (BVS) (Absorb BVS) and cobalt-chromium everolimus-eluting metallic stents (CoCr-EES), higher event rates of Absorb BVS have been reported with suboptimal deployment, especially in small coronary arteries...
April 9, 2018: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/29621066/electrical-stimulation-based-renal-nerve-mapping-exacerbates-ventricular-arrhythmias-during-acute-myocardial-ischaemia
#15
Bing Huang, Xiaoya Zhou, Menglong Wang, Xuefei Li, Liping Zhou, Guannan Meng, Yuhong Wang, Zhuo Wang, Songyun Wang, Lilei Yu, Hong Jiang
OBJECTIVE: Blood pressure elevation in response to transient renal nerve stimulation (RNS) has been used to determine the ablation target and endpoint of renal denervation. This study aimed to evaluate the safety of transient RNS in canines with normal or ischaemic hearts. METHODS: In ten normal (Group 1) and six healed myocardial infarction (HMI) (Group 2) canines, a large-tip catheter was inserted into the left or right renal artery to perform transient RNS. The left stellate ganglion neural activity (LSGNA) and ventricular electrophysiological parameters were measured at baseline and during transient RNS...
April 4, 2018: Journal of Hypertension
https://www.readbyqxmd.com/read/29619341/right-carotid-cutaneous-fistula-and-right-carotid-pseudoaneurysm-formation-secondary-to-a-chronically-infected-polyethylene-terephthalate-patch
#16
W T Hillman Terzian, Samuel Schadt, Sharvil U Sheth
Carotid endarterectomy (CEA) remains the treatment for significant carotid stenosis and stroke prevention. Approximately 100,000 CEAs are performed in the United States every year. Randomized trials have demonstrated an advantage of patch carotid angioplasty over primary closure. Complications from patches include thrombosis, transient ischemic attack, stroke, restenosis, pseudoaneurysm (PA), and infection. PA after CEA is rare, with a reported average of 0.37% of cases. We describe an unusual case of PA after polyethylene terephthalate (PTFE) patching for CEA...
January 2018: International Journal of Critical Illness and Injury Science
https://www.readbyqxmd.com/read/29618307/safety-and-efficacy-of-adenovirus-carrying-hepatocyte-growth-factor-gene-by-percutaneous-endocardial-injection-for-treating-post-infarct-heart-failure-a-phase-iia-clinical-trial
#17
Haoyu Meng, Bo Chen, Zhengxian Tao, Zhihui Xu, Liansheng Wang, Ju Weizhu, Yongyong Hong, Xiang Liu, Hua Wang, Lisheng Wang, Zuze Wu, Zhijian Yan
OBJECTIVE: Our previous phase I clinical trial has confirmed the safety of adenovirus carrying hepatocyte growth factor gene (Ad-HGF) by intracoronary administration for treating severe coronary artery disease. This study was performed to evaluated the safety and efficacy of Ad-HGF by percutaneous endocardial injection for treating post-infarct heart failure. METHODS: A total of 30 patients (15 in the experimental group and 15 in the control group) with post-infarct heart failure who were not indicated to revascularization and had received the optimal standardized medication therapy were included in the study...
April 4, 2018: Current Gene Therapy
https://www.readbyqxmd.com/read/29618188/is-it-possible-to-reduce-intra-hospital-transport-time-for-computed-tomography-evaluation-in-critically-ill-cases-using-the-easy-tube-arrange-device
#18
Kyung Hyeok Song, Sung Uk Cho, Jin Woong Lee, Yong Chul Cho, Won Joon Jeong, Yeon Ho You, Seung Ryu, Seung Whan Kim, In Sool Yoo, Ki Hyuk Joo
OBJECTIVE: Patients are often transported within the hospital, especially in cases of critical illness for which computed tomography (CT) is performed. Since increased transport time increases the risks of complications, reducing transport time is important for patient safety. This study aimed to evaluate the ability of our newly invented device, the Easy Tube Arrange Device (ETAD), to reduce transport time for CT evaluation in cases of critical illness. METHODS: This prospective randomized control study included 60 volunteers...
March 2018: Clinical and Experimental Emergency Medicine
https://www.readbyqxmd.com/read/29618068/occipital-artery-to-posterior-cerebral-artery-bypass-using-descending-branch-of-the-lateral-circumflex-femoral-artery-graft-for-treatment-of-fusiform-unruptured-posterior-cerebral-artery-aneurysm-3-dimensional-operative-video
#19
Kristine Ravina, Ian A Buchanan, Robert C Rennert, Ben A Strickland, Joseph N Carey, Jonathan J Russin
Posterior cerebral artery (PCA) aneurysms can be technically challenging lesions due to the intricacy of perforating branches and the relationship to cranial nerves and the brainstem. Fusiform aneurysms of the perimesencephalic segment of the PCA are a rare finding which does not favor direct clip occlusion or reconstruction. In such cases, proximal parent vessel occlusion is an option for aneurysm treatment. Extracranial-intracranial (EC-IC) bypass can be used to revascularize beyond the lesion when considering proximal occlusion...
April 3, 2018: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29617762/pressure-gradient-vs-flow-relationships-to-characterize-the-physiology-of-a-severely-stenotic-aortic-valve-before-and-after-transcatheter-valve-implantation
#20
Nils P Johnson, Jo M Zelis, Pim A L Tonino, Patrick Houthuizen, R Arthur Bouwman, Guus R G Brueren, Daniel T Johnson, Jacques J Koolen, Hendrikus H M Korsten, Inge F Wijnbergen, Frederik M Zimmermann, Richard L Kirkeeide, Nico H J Pijls, K Lance Gould
Aims: Echocardiography and tomographic imaging have documented dynamic changes in aortic stenosis (AS) geometry and severity during both the cardiac cycle and stress-induced increases in cardiac output. However, corresponding pressure gradient vs. flow relationships have not been described. Methods and results: We recruited 16 routine transcatheter aortic valve implantations (TAVI's) for graded dobutamine infusions both before and after implantation; 0.014″ pressure wires in the aorta and left ventricle (LV) continuously measured the transvalvular pressure gradient (ΔP) while a pulmonary artery catheter regularly assessed cardiac output by thermodilution...
April 2, 2018: European Heart Journal
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