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https://www.readbyqxmd.com/read/29028651/endoscopic-conduit-harvest-in-coronary-artery-bypass-grafting-surgery-an-ismics-systematic-review-and-consensus-conference-statements
#1
Francis D Ferdinand, John K MacDonald, Husam H Balkhy, Gianluigi Bisleri, Ho Young Hwang, Patricia Northrup, Richard H J Trimlett, Lai Wei, Bob B Kiaii
OBJECTIVE: The purpose of this consensus conference was to develop and update evidence-informed consensus statements and recommendations on harvesting saphenous vein and radial artery via an open as compared with endoscopic technique by systematically reviewing and performing a meta-analysis of randomized and nonrandomized clinical trials. METHODS: All randomized controlled trials and nonrandomized controlled trials included in the first the International Society for Minimally Invasive Cardiothoracic Surgery Consensus Conference and Statements, in 2005 up to November 30, 2015, were included in a systematic review and meta-analysis...
October 13, 2017: Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery
https://www.readbyqxmd.com/read/29027696/computer-aided-evaluation-of-blood-vessel-geometry-from-acoustic-images
#2
Stefan B Lindström, Fredrik Uhlin, Niclas Bjarnegård, Micael Gylling, Kamilla Nilsson, Christina Svensson, Pia Yngman-Uhlin, Toste Länne
A method for computer-aided assessment of blood vessel geometries based on shape-fitting algorithms from metric vision was evaluated. Acoustic images of cross sections of the radial artery and cephalic vein were acquired, and medical practitioners used a computer application to measure the wall thickness and nominal diameter of these blood vessels with a caliper method and the shape-fitting method. The methods performed equally well for wall thickness measurements. The shape-fitting method was preferable for measuring the diameter, since it reduced systematic errors by up to 63% in the case of the cephalic vein because of its eccentricity...
October 13, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/29025900/multiple-coupled-resonances-in-the-human-vascular-tree-refining-the-westerhof-model-of-the-arterial-system
#3
Gerhard Schumacher, Jens J Kaden, Frederik Trinkmann
The human arterial vascular tree can be described by multi-compartment models using electrical components. Being first introduced in the 1960s by Noordergraaf and Westerhof these hardware-based approaches required several simplifications. We were able to remove the restrictions using modern software simulation tools and improve overall model quality considerably. While the original Westerhof model consisted of 121 Windkessel elements, the refined model has 711 elements and gives realistic pulse waveforms of the aorta, brachial and radial arteries with realistic blood pressures...
October 12, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/29022335/a-paper-carbon-nanotube-based-wearable-pressure-sensor-for-physiological-signal-acquisition-and-soft-robotic-skin
#4
Zhaoyao Zhan, Rongzhou Lin, Van-Thai Tran, Jianing An, Yuefan Wei, Hejun Du, Tuan Tran, Wenqiang Lu
Wearable and flexible pressure sensor is essential to the realization of personalized medicine through continuously monitoring an individual's state of health and also the development of highly intelligent robot. A flexible, wearable pressure sensor is fabricated based on novel SWNT/tissue paper through a low-cost and scalable approach. The flexible, wearable sensor showed superior performance with concurrence of several merits, including high sensitivity for a broad pressure range and ultralow energy consumption level of (~10-6 W)...
October 12, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29021662/embolized-prostatic-brachytherapy-seeds-mimicking-acute-chest-pain-syndromes
#5
Nirmal Guragai, Upamanyu Rampal, Rahul Vasudev
A 59-year-old male with a history of nonobstructive coronary artery disease, diabetes mellitus, hypertension, and prostate cancer presented to the hospital with 1-day history of pleuritic chest pain. Initial workup for acute coronary event was unremarkable. Chest X-ray revealed multiple small radial densities which were linear and hyperdense, consistent with embolization of metallic seeds to the pulmonary circulation. The patient was noted to have had radioactive metallic seeds implanted for prostate cancer 6 months ago...
October 2017: Indian Journal of Urology: IJU: Journal of the Urological Society of India
https://www.readbyqxmd.com/read/29018652/anastomotic-aneurysm-formation-after-high-flow-bypass-surgery-a-case-report-with-histopathological-study
#6
Tatsuya Uchida, Masanori Yoshino, Shinji Ito, Takayuki Hara
Bypass surgery is often used in the treatment of large and giant aneurysms. Major complications that often arise during the perioperative period include cranial nerve palsy, ischemic complications, and hyperperfusion. However, there have been a few reports about late onset complications such as anastomotic aneurysms. In particular, anastomotic aneurysm after high flow bypasses has never been reported. A 57-year-old woman who had been suffering from left eye pain was diagnosed with a large aneurysm of the left internal carotid artery (ICA) in the cavernous portion...
October 2017: NMC Case Rep J
https://www.readbyqxmd.com/read/29016632/radial-artery-neointimal-hyperplasia-after-transradial-pci-serial-optical-coherence-tomography-volumetric-study
#7
Petr Kala, Jan Kanovsky, Tereza Novakova, Roman Miklik, Otakar Bocek, Martin Poloczek, Petr Jerabek, Lenka Prymkova, Tomas Ondrus, Jiri Jarkovsky, Milan Blaha, Gary S Mintz
AIMS: Transradial catheterization (TRC) is a dominant access site for coronary catheterization and percutaneous coronary interventions (PCI) in many centers. Previous studies reported higher intimal thickness of the radial artery (RA) wall in patients with a previous history of TRC. In this investigation the aim was to assess the intimal changes of RA using the optical coherence tomography (OCT) intravascular imaging in a serial manner. METHODS AND RESULTS: 100 patients with the diagnosis of non-ST-elevation myocardial infarction (nSTEMI) treated by PCI were enrolled (6 patients were excluded from this analysis because of occluded RA at follow-up [2 patients] and insufficient quality of OCT images [4 patients])...
2017: PloS One
https://www.readbyqxmd.com/read/28993347/interrupted-aortic-arch-complicated-with-takotsubo-cardiomyopathy-mimicking-aortic-dissection
#8
Farhala Mari Baloch, Javed Majid Tai, Aamir Hameed Khan, Abdul Baqi
A 50-year-old man presented to the emergency department with interscapular pain, diaphoresis and restlessness. Initial examination raised the possibility of aortic dissection; however, the CT scan did not concur with the diagnosis. An ECG showed ST segment elevation in leads V1-V6 and echocardiography showed severe left ventricular systolic dysfunction. Coronary angiography through the right femoral artery was attempted but the diagnostic catheter could not be advanced to the ascending aorta. Radiocontrast injection showed complete obstruction of the descending aorta...
October 9, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28990307/physiological-dead-space-and-arterial-carbon-dioxide-contributions-to-exercise-ventilatory-inefficiency-in-patients-with-reduced-or-preserved-ejection-fraction-heart-failure
#9
Erik H Van Iterson, Bruce D Johnson, Barry A Borlaug, Thomas P Olson
AIMS: Patients with heart failure (HF) with reduced (HFrEF) or preserved (HFpEF) ejection fraction demonstrate an increased ventilatory equivalent for carbon dioxide (V̇E /V̇CO2 ) slope. The physiological correlates of the V̇E /V̇CO2 slope remain unclear in the two HF phenotypes. We hypothesized that changes in the physiological dead space to tidal volume ratio (VD /VT ) and arterial CO2 tension (PaCO2 ) differentially contribute to the V̇E /V̇CO2 slope in HFrEF vs. HFpEF. METHODS AND RESULTS: Adults with HFrEF (n = 32) and HFpEF (n = 27) [mean ± standard deviation (SD) left ventricular ejection fraction: 22 ± 7% and 61 ± 9%, respectively; mean ± SD body mass index: 28 ± 4 kg/m(2) and 33 ± 6 kg/m(2) , respectively; P < 0...
October 8, 2017: European Journal of Heart Failure
https://www.readbyqxmd.com/read/28990204/serial-evaluation-of-endometrial-blood-flow-for-prediction-of-pregnancy-outcomes-in-patients-who-underwent-controlled-ovarian-hyperstimulation-and-in-vitro-fertilization-and-embryo-transfer
#10
Hwa Seon Koo, Chan Woo Park, Sun Hwa Cha, Kwang Moon Yang
OBJECTIVES: To investigate endometrial blood flow during the menstrual cycle in patients undergoing controlled ovarian hyperstimulation (COH), in vitro fertilization (IVF), and embryo transfer (ET) and prediction of pregnancy outcomes based on these characteristics. METHODS: Endometrial blood flow was measured in 35 patients undergoing COH and IVF-ET (nonpregnant [n = 15] and pregnant [n = 20]) by measuring the resistive index (RI) of the uterine radial artery using 2-dimensional Doppler ultrasonography...
October 9, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28989555/noninvasive-evaluation-of-varying-pulse-pressures-in-vivo-using-brachial-sphymomanometry-applanation-tonometry-and-pulse-wave-ultrasound-manometry
#11
Ronny X Li, Ada Ip, Elena Sanz-Miralles, Elisa E Konofagou
The routine assessment and monitoring of hypertension may benefit from the evaluation of arterial pulse pressure (PP) at more central locations (e.g. the aorta) rather solely at the brachial artery. Pulse Wave Ultrasound Manometry (PWUM) was previously developed by our group to provide direct, noninvasive aortic PP measurements using ultrasound elasticity imaging. Using PWUM, radial applanation tonometry, and brachial sphygmomanometry, this study investigated the feasibility of noninvasively obtaining direct PP measurements at multiple arterial locations in normotensive, pre-hypertensive, and hypertensive human subjects...
June 2017: Artery Research
https://www.readbyqxmd.com/read/28985693/assessing-the-depth-of-isoflurane-anaesthesia-during-cardiopulmonary-bypass
#12
Ka Ting Ng, R Peter Alston, George Just, Chris McKenzie
INTRODUCTION: Bispectral index (BIS) and monitoring of end-tidal concentration may be associated with a reduction in the incidence of awareness during volatile-based general anaesthesia. An analogue of end-tidal concentration during cardiopulmonary bypass (CPB) is measuring exhausted isoflurane concentration from the oxygenator as an estimate to blood and, so, brain concentration. The aim of this study was to determine the relationships between oxygenator exhaust and blood concentrations of isoflurane and the BIS score during CPB when administering isoflurane into the sweep gas supply to the oxygenator...
October 1, 2017: Perfusion
https://www.readbyqxmd.com/read/28984797/validation-of-radial-artery-based-uncalibrated-pulse-contour-method-pulsioflex-in-critically-ill-patients-a-observational-study
#13
Jörn Grensemann, Jerome M Defosse, Meike Willms, Uwe Schiller, Frank Wappler, Samir G Sakka
BACKGROUND: Because of their simplicity, uncalibrated pulse contour (UPC) methods have been introduced into clinical practice in critical care but are often validated with a femoral arterial waveform. OBJECTIVE: We aimed to test the accuracy of cardiac index (CI) measurements and trending ability from a radial artery with one UPC. DESIGN: An observational study. SETTING: Tertiary care mixed-surgical ICU. Data were obtained from April 2015 to July 2016...
November 2017: European Journal of Anaesthesiology
https://www.readbyqxmd.com/read/28984768/the-safety-and-feasibility-of-guidezilla-catheter-in-complex-coronary-interventions-and-an-observational-study
#14
Jianying Ma, Lei Hou, Juying Qian, Lei Ge, Feng Zhang, Shufu Chang, Rende Xu, Qing Qin, Junbo Ge
The monorail Guidezilla guide extension catheter was designed to provide additional backup and facilitate device delivery in percutaneous coronary intervention (PCI) for complex coronary anatomy such as chronic total occlusion (CTO), extreme vessel tortuosity, diseased bypass grafts, and anomalous coronary arteries, among others.The present retrospective, single-center study included 188 consecutive patients who underwent PCI using the Guidezilla catheter from March 2015 to August 2016. Study outcomes were rates of target lesion crossing success, procedural success, and complications...
October 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28982184/uptake-and-release-of-amino-acids-in-the-fetal-placental-unit-in-human-pregnancies
#15
Maia Blomhoff Holm, Nasser Ezzatkhah Bastani, Ane Moe Holme, Manuela Zucknick, Thomas Jansson, Helga Refsum, Lars Mørkrid, Rune Blomhoff, Tore Henriksen, Trond Melbye Michelsen
OBJECTIVES: The current concepts of human fetal-placental amino acid exchange and metabolism are mainly based on animal-, in vitro- and ex vivo models. We aimed to determine and assess the paired relationships between concentrations and arteriovenous differences of 19 amino acids on the maternal and fetal sides of the human placenta in a large study sample. METHODS: This cross-sectional in vivo study included 179 healthy women with uncomplicated term pregnancies...
2017: PloS One
https://www.readbyqxmd.com/read/28980101/a-novel-non-invasive-blood-pressure-waveform-measuring-system-compared-to-millar-applanation-tonometry
#16
Sándor Földi, Tamás Horváth, Flóra Zieger, Péter Sótonyi, György Cserey
The accurate, non-invasive, measuring of the continuous arterial blood pressure waveform faces some difficulties and an innovative blood pressure measurement technology is urgently needed. However, the arterial blood pressure waveform plays an essential role in health care by providing diagnostic information and base for calculating several heart function parameters. The aim of this study is to introduce a novel non-invasive measuring system that can measure the arterial blood pressure waveform with high accuracy in comparison to an applanation tonometry system...
October 4, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/28979634/delayed-brachial-artery-reconstruction-after-traumatic-injury-a-case-for-sustainment-of-surgical-intervention
#17
Kelechi Emmanuel Okonta, Emmanuel Ossai Ocheli, Tombari Joseph Gbeneol
The brachial artery is the commonest artery injured in the extremities. Although the patients present late, nevertheless reconstructions is advocated in other to salvage the limb and maintain function of the hand. We retrospectively examined 25 consecutive patients with vascular injuries treated at The Cardiovascular and Thoracic Surgery Unit of a tertiary health centre over a period of 4 years. We assessed the pre-tertiary methods of stopping of bleeding injured brachial arteries, mechanisms of injury, associated injuries, treatment and the outcome following vascular repair in terms of functionality of the forearm and the volume of the radial pulsation...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28974830/experience-and-outcomes-of-primary-percutaneous-coronary-intervention-for-patients-with-st-segment-elevation-myocardial-infarction-of-tertiary-care-center-in-bosnia-and-herzegovina
#18
Elmir Jahic
BACKGROUND: Primary percutaneous coronary intervention (PCI) is an emergent percutaneous catheter intervention in the setting of ST-segment elevations myocardial infarction (STEMI), without previous fibrinolytic treatment. AIM: To evaluate the feasibility and outcomes of primary percutaneous coronary interventions for STEMI in regional tertiary care cardiac centre in Bosnia and Herzegovina. METHODS: Between January 2014 and December 2016, consecutive 549 STEMI patients who underwent primary PCI were prospectively enrolled in a primary PCI registry...
June 2017: Medical Archives
https://www.readbyqxmd.com/read/28972675/early-sex-differences-in-central-arterial-wave-reflection-are-mediated-by-different-timing-of-forward-and-reflected-pressure-waves
#19
Divanei Zaniqueli, Marcelo Perim Baldo, Carmem Luiza Sartório, Roberto de Sá Cunha, Rafael de Oliveira Alvim, José Geraldo Mill
Non-invasive assessment of central arterial pulse wave augmentation has been proved to be useful in predicting cardiovascular adverse events. Previous studies have shown that prepubescent girls had greater central augmentation pressure compared with height-matched boys. This study sought to investigate which factors contribute to the body height-independent sexual differences in central arterial wave reflection observed in childhood. This cross-sectional study involved 819 children and adolescents (6-18 years of age) of both sexes...
October 3, 2017: Clinical and Experimental Pharmacology & Physiology
https://www.readbyqxmd.com/read/28972063/current-practice-of-state-of-the-art-surgical-coronary-revascularization
#20
REVIEW
Stuart J Head, Milan Milojevic, David P Taggart, John D Puskas
Coronary artery bypass grafting remains one of the most commonly performed major surgeries, with well-established symptomatic and prognostic benefits in patients with multivessel and left main coronary artery disease. This review summarizes current indications, contemporary practice, and outcomes of coronary artery bypass grafting. Despite an increasingly higher-risk profile of patients, outcomes have significantly improved over time, with significant reductions in operative mortality and perioperative complications...
October 3, 2017: Circulation
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