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https://www.readbyqxmd.com/read/28525672/testing-of-a-novel-percutaneous-temporary-aortic-valve-in-a-rabbit-model-of-acute-severe-aortic-regurgitation-an-experimental-study
#1
Paul C Ho
PURPOSE: Device management of hemodynamic instability due to acute aortic regurgitation is not available. A novel, catheter-based, temporary aortic valve (TAV) has been in development. Early prototypes (balloon-based TAV) have undergone proof-of-concept studies in mathematical, bench and animal models. The redesigned membrane-based TAV prototype is evaluated in a rabbit model of acute severe aortic regurgitation. METHODS: Acute aortic regurgitation was simulated by deploying a self-expanding endovascular stent across the aortic annulus...
May 18, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28521609/adrenal-obliteration-by-balloon-occluded-retrograde-venous-ethanol-injection-in-a-swine-model
#2
Akitoshi Inoue, Shinichi Ohta, Norihisa Nitta, Shizuka Tsuboi, Akinaga Sonoda, Yuki Tomozawa, Shobu Watanabe, Kenichi Mukaisho, Kiyoshi Murata
PURPOSE: To evaluate the effects of adrenal obliteration by balloon-occluded retrograde venous ethanol injection. MATERIAL AND METHODS: We inserted a micro-balloon catheter into the left adrenal vein of six pigs and retrogradely injected absolute ethanol (0.06 ml/kg) under balloon occlusion. Two pigs were sacrificed on day 3, 7, and 14 after the procedure, respectively. We evaluated adrenal cortical and medullary hormones of the left renal vein, venograms, magnetic resonance imaging scans obtained before and after the procedure, autopsy and microscopic findings, and the weight of the bilateral adrenal glands...
May 19, 2017: Minimally Invasive Therapy & Allied Technologies: MITAT
https://www.readbyqxmd.com/read/28515828/primary-percutaneous-coronary-intervention-using-balloon-assisted-sliding-and-tracking-blast-of-diagnostic-catheter-to-negotiate-double-hairpin-loop-of-radial-artery
#3
Santosh Kumar Sinha, Vikas Mishra, Mukesh Jitendra Jha, Mahmadula Razi, Anupam Mahrotra, Nasar Abdali, Lokendra Rekwal, Vikas Chaturvedi, Anupam Kumar Singh, Ramesh Thakur
During transradial intervention, sharp edge of the guide catheter tip may act like a "razor-blade" and can prevent the catheter navigation especially in situation like double hair pin loop. Here, we report primary percutaneous coronary intervention (PCI) through diagnostic catheter using an innovative technique, balloon-assisted sliding and tracking (BLAST), to overcome this double hairpin loop, thus saving time and contrast volume.
April 2017: Cardiology Research
https://www.readbyqxmd.com/read/28515824/cardiogenic-shock-acute-severe-mitral-regurgitation-and-complete-heart-block-after-cavo-tricuspid-isthmus-atrial-flutter-ablation
#4
Thein Tun Aung, Edward Samuel Roberto, Kevin D Kravitz
Radiofrequency (RF) ablation is the first-line management of cavo-tricuspid isthmus dependent atrial flutter. It has been performed with 95% success rate. Adverse events are very rare. We report the first case of acute severe mitral regurgitation (MR) and complete heart block developed after successful atrial flutter ablation. A 62-year-old female with mild MR presented with palpitations. Surface electrocardiogram was suggestive of isthmus dependent atrial flutter. A duodecapolar mapping catheter showed an atrial flutter with cycle length of 280 ms...
April 2017: Cardiology Research
https://www.readbyqxmd.com/read/28515596/balloon-occluded-retrograde-transvenous-obliteration-for-bleeding-gastric-varices-eyes-see-what-the-mind-knows
#5
Pushpinder S Khera, Lee Myungsu, Choi Joonsung
Approximately one in six patients with portal hypertension who develop varices at sites of portosystemic venous collaterals has gastric varices due to hepatofugal flow into the gastric veins. Bleeding from gastric varices, though less common, has a higher mortality and morbidity compared to bleeding esophageal varices, which are easier to manage endoscopically. The efferent channel for gastric varices is mostly the gastrorenal shunt (GRS) which opens into the left renal vein. Balloon-occluded transvenous obliteration (BRTO) involves accessing the GRS with an aim to temporarily occlude its outflow using a balloon catheter and at the same time injecting sclerosant mixture within the varix so as to cause its thrombosis and thereby obliteration...
January 2017: Indian Journal of Radiology & Imaging
https://www.readbyqxmd.com/read/28511441/catheter-assisted-balloon-supported-retrieval-of-a-broken-semi-compliant-balloon-from-a-coronary-artery
#6
Brajesh Kumar Kunwar, Pranay Jain, Mahesh Ghogare
Incidents of broken balloon in a coronary vasculature during percutaneous coronary angioplasty are very rare. Such events in cath-lab may create panic and can be life threatening for patients. Hence, immediate retrieval of broken balloon becomes vital. Here, we report an unusual complication of broken balloon in the mid portion of the left anterior descending coronary artery, which had a calcified and totally occluded in-stent restenotic lesion. The broken balloon was retrieved successfully with no eventual complication using a simple catheter-assisted balloon-supported retrieval technique...
March 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28504545/detection-of-hemodynamically-significant-coronary-artery-stenosis-with-ct-enhancement-ratio-a-validation-study-in-a-porcine-model
#7
Jun Chen, Yang Pu, Zhang Zhang, Xuefang Yu, Zhengwen Yang
OBJECTIVE: Although numerous techniques that are based on CT number analysis have been proposed, the assessment of hemodynamically significant coronary artery stenosis remains a great challenge. The purpose of this study is to validate use of the CT enhancement ratio in the detection of hemodynamically significant coronary artery stenosis in a porcine model. MATERIALS AND METHODS: Experiments involving eight closed-chest swine were performed. A balloon catheter was placed into the left anterior descending coronary artery to simulate different degrees of luminal stenosis...
May 15, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28503456/effect-of-vallecular-ballooning-in-stroke-patients-with-dysphagia
#8
Yong Kyun Kim, Sang-Heon Lee, Jang-Won Lee
OBJECTIVE: To investigate the improvement of dysphagia after balloon dilatation and balloon swallowing at the vallecular space with a Foley catheter in stroke patients. METHODS: This study was conducted between May 1, 2012 and December 31, 2015, and involved 30 stroke patients with complaints of difficulty in swallowing. All patients underwent videofluoroscopic swallowing study (VFSS) before and after vallecular ballooning. VFSS was performed with a 4 mL semisolid bolus...
April 2017: Annals of Rehabilitation Medicine
https://www.readbyqxmd.com/read/28501350/first-in-man-prolonged-pressure-controlled-intermittent-coronary-sinus-occlusion-to-treat-refractory-left-ventricular-dysfunction-and-ischemia-with-patent-epicardial-coronary-arteries
#9
Federico Pappalardo, Marco B Ancona, Francesco Giannini, Damiano Regazzoli, Antonio Mangieri, Matteo Montorfano, Michele De Bonis, Ottavio Alfieri, Alberto Zangrillo, Anna Mara Scandroglio, Antonio Colombo, Azeem Latib
AIMS: Pressure-controlled Intermittent Coronary Sinus Occlusion (PICSO) intermittently increases the pressure in the cardiac venous outflow tract using a balloon-tipped catheter introduced percutaneously into the coronary sinus. It aims to improve microvascular perfusion in STEMI patients during PCI, thus improving infarct healing. Its successful administration was associated with an improvement in myocardial recovery four months after primary-PCI as compared to control. However, it has never been used in other settings or for a prolonged period...
May 9, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28499863/innovative-procedure-for-inferior-mesenteric-artery-embolization-using-the-amplatzer-vascular-plug-4-during-endovascular-aneurysm-repair
#10
Noriyasu Morikage, Makoto Samura, Yuriko Takeuchi, Yuya Tanaka, Koshiro Ueda, Takasuke Harada, Osamu Yamashita, Kotaro Suehiro, Kimikazu Hamano
PURPOSE: To present an easy and quick technique for embolization of the inferior mesenteric artery (IMA) during endovascular aneurysm repair (EVAR). TECHNIQUE: We performed IMA embolization using a conventional EVAR device alone with the femoral artery approach during EVAR, which has not been reported previously. First, a 16F or 18F DrySeal Sheath is inserted from the femoral artery into the site around the IMA. Second, cannulation is performed in the IMA with an angiography catheter having a 0...
May 9, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28497709/use-of-proximal-side-hole-micro-balloon-catheter-in-transcatheter-hepatic-arterial-chemoembolization
#11
Takuji Yamagami, Rika Yoshimatsu, Miki Nishimori, Kenta Ogi, Taiji Tamura, Shinji Iwasaki, Tomoaki Yamanishi
We report on a 70-year-old man with unresectable multiple hepatocellular carcinomas who underwent treatment with transcatheter hepatic arterial chemoembolization. In treating a tumor in segment 1 of the liver, the proximal side-hole micro-balloon catheter, which has been newly developed, was useful.
May 12, 2017: Minimally Invasive Therapy & Allied Technologies: MITAT
https://www.readbyqxmd.com/read/28497390/garlicin-post-conditioning-suppresses-adhesion-molecules-in-a-porcine-model-of-myocardial-ischemia-reperfusion-injury
#12
Peng Yang, Jia-Hui Li, Ai-Li Li, Jing Li, Yong Wang, Shi-Yan Ren, Xian-Lun Li
OBJECTIVES: To evaluate whether garlicin post-conditioning can attenuate myocardial ischemiareperfusion injury in a catheter-based porcine model of acute myocardial infarction (AMI) by affecting adhesion molecules integrin β1/CD29 and platelet endothelial cell adhesion molecule-1 (PECAM-1/CD31). METHODS: Twenty-two swine were devided into 3 groups: 6 in a sham-operation group, and 8 each in the model and garlicin groups. AMI porcine model was established in the model and garlicin groups...
May 11, 2017: Chinese Journal of Integrative Medicine
https://www.readbyqxmd.com/read/28497006/under-pressure-intraluminal-filling-pressures-of-postpartum-hemorrhage-tamponade-balloons
#13
Kathleen M Antony, Diana A Racusin, Michael A Belfort, Gary A Dildy
Objective Uterine tamponade by fluid-filled balloons is now an accepted method of controlling postpartum hemorrhage. Available tamponade balloons vary in design and material, which affects the filling attributes and volume at which they rupture. We aimed to characterize the filling capacity and pressure-volume relationship of various tamponade balloons. Study Design Balloons were filled with water ex vivo. Intraluminal pressure was measured incrementally (every 10 mL for the Foley balloons and every 50 mL for all other balloons)...
April 2017: American Journal of Perinatology Reports
https://www.readbyqxmd.com/read/28496031/atrial-septostomy-for-left-atrial-decompression-during-extracorporeal-membrane-oxygenation-by-inoue-balloon-catheter
#14
Yen-Nien Lin, Yin-Huei Chen, Huang-Joe Wang, Jui-Sung Hung, Kuan-Cheng Chang, Ping-Han Lo
BACKGROUND: Refractory pulmonary edema is an infrequent but serious complication in patients receiving venoarterial extracorporeal membrane oxygenation (VA-ECMO) for myocardial failure. Left atrial (LA) decompression in this setting is important. Although a few methods have been reported, the experience is mostly limited to children. We aimed to evaluate the feasibility of Inoue balloon catheter in percutaneous trans-septal LA decompression in adult cardiogenic patients.Methods and Results:We retrospectively analyzed 16 procedures of trans-septal LA decompression by Inoue balloon catheter in 15 VA-ECMO patients (aged 22-65 years, 6 men) with refractory pulmonary edema from May 2012 to December 2014...
May 11, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28490680/-a-ruptured-aneurysm-at-the-origin-of-a-duplicated-middle-cerebral-artery-treated-by-coil-embolization-a-case-report
#15
Kentaro Hayashi, Yoshitaka Matsuo, Yukishige Hayashi, Kiyoshi Shirakawa, Makio Kaminogo
Duplication of the middle cerebral artery(MCA)is an anatomical variant of the MCA, originating from the distal portion of the internal carotid artery(ICA)and supplying blood flow to the tip of the temporal lobe. Cerebral aneurysms rarely develop at the bifurcation of the ICA and the duplicated MCA, but when they do develop, they may result in subarachnoid hemorrhage. We treated a 41-year-old man, who was urgently brought to our hospital because of severe headache. A computed tomography(CT)scan showed subarachnoid hemorrhage due to the rupture of an aneurysm at the origin of the duplicated MCA...
May 2017: No Shinkei Geka. Neurological Surgery
https://www.readbyqxmd.com/read/28488419/balloon-aortic-valvuloplasty-in-contemporary-practice
#16
Kully Sandhu, Suresh Krishnamoorthy, Ashari Afif, James Nolan, Mark G Gunning
BACKGROUND: There has been a revival of balloon aortic valvuloplasty (BAV) for severe aortic stenosis, as a result of an increasing number of patients undergoing trans-catheter aortic valve implantation (TAVI). However, there has not been universal adoption of BAV as a standalone, nor bridging therapy. METHODS: A retrospective analysis of the practice at our institution between June 2009 and May 2016 was performed. Demographic, clinical, procedural, and follow-up data on all patients were collected...
May 9, 2017: Journal of Interventional Cardiology
https://www.readbyqxmd.com/read/28485513/first-description-of-a-double-wall-balloon-breach-during-cryoballoon-ablation-for-atrial-fibrillation
#17
Keith Suarez, Javier Banchs, Hae W Lim, James N Black
Balloon breach during cryoablation: To date, this is the first published report of a double-wall breach while using the cryoballoon ablation catheter during the treatment of a patient with atrial fibrillation; however, there have been previous balloon breaches in both the second and third-generation cryoballoon ablation catheter usage. In this report, we describe the case of a double-wall balloon breach and the intraoperative care that was necessary to stabilize the patient. Additionally, we review other known cases of double-wall balloon breaches, and we examine the safety systems of the cryoballoon catheter that mitigate some of the potential patient complications...
May 9, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28481175/dosimetric-evaluation-of-a-flexible-dual-balloon-constructed-applicator-in-treating-anorectal-cancer
#18
Hsiang-Chi Kuo, Keyur J Mehta, Ravindra Yaparpalvi, Alan Lee, Dinesh Mynampati, William Bodner, Madhur Garg, David Huang, Wolfgang A Tomé, Shalom Kalnicki
BACKGROUND AND PURPOSE: To assess the dosimetric flexibility of a dual balloon brachytherapy applicator developed for the treatment of anorectal lesions. MATERIALS AND METHODS: Different amounts of water were infused into the inner and outer balloon separately to study the asymmetrical distribution of the catheter, the radial distance of the active source channel to the inner surface of the global target volume , the space between the active source channels, and their dosimetric impact to target tissues and uninvolved rectum...
January 1, 2017: Technology in Cancer Research & Treatment
https://www.readbyqxmd.com/read/28479444/intraoperative-type-iiib-endoleak-after-endograft-deployment-during-evar
#19
Konstantinos G Moulakakis, John Kakisis, George Geroulakos, Elias N Brountzos
Type IIIb endoleak usually occurs years after the initial endograft implantation and the cause is the chronic fatigue of the endograft. This rare case describes a type IIIb endoleak, appearing immediately after deployment of a new generation low profile stentgraft and highlights the diagnostic and treatment challenges associated with the type IIIb endoleak. A 74 years old man underwent elective EVAR for an infrarenal abdominal aortic aneurysm. A type IIIb endoleak near to the flow divider due to a fabric defect was diagnosed...
May 4, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28471016/a-novel-lesion-crossing-technique-balloon-deployment-using-forcible-manner-badform-technique
#20
Keisuke Nakabayashi, Hiroshi Ando, Nobuhito Kaneko, Manabu Shiozaki, Daisuke Sunaga, Akihiro Matsui, Kazuhiko Tanaka, Minoru Shimizu
OBJECTIVES: We evaluated the efficacy and safety of a novel endovascular technique for crossing arterial lesions: The BAlloon Deployment using FORcible Manner (BADFORM) technique. BACKGROUND: Endovascular treatment (EVT) for peripheral artery disease has been widely adopted, and developments in device technology and techniques have resulted in acceptable success rates. However, it may be difficult to deliver devices even after wire externalization, especially in the presence of an extremely long chronic total occlusion or severely calcified lesion...
May 4, 2017: Catheterization and Cardiovascular Interventions
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