Results 111 to 120 of about 69,647 (307)

Coronary flow reserve in patients with normal coronary angiograms

Journal of the American College of Cardiology, 1985
It has been estimated that 20% of patients who undergo coronary angiography for the evaluation of chest pain have angiographically normal coronary vessels with no other car• diac cause for their discomfort. Although the natural history of this patient group is favorable (1-3), the mechanisms responsible for the pain frequently remain mysterious. In the
Marcus, Melvin L., White, Carl W.
openaire   +2 more sources

Does the β-Blocker Nebivolol Increase Coronary Flow Reserve? [PDF]

, 2018
Introduction: Nebivolol, a highly selective β1-adrenergic receptor-blocker, increases basal and stimulated endothelial nitric oxide (NO)-release. It is unknown, whether coronary perfusion is improved by the increase in NO availability.
Abrecht, Linda, Billinger, Michael, Cook, Stephane, Hess, Otto, Meier, Bernhard, Togni, Mario, Vigorito, Francesco, Wenaweser, Peter, Windecker, Stephan   +8 more
core  

Computational fluid dynamics modeling of symptomatic intracranial atherosclerosis may predict risk of stroke recurrence. [PDF]

, 2014
BackgroundPatients with symptomatic intracranial atherosclerosis (ICAS) of ≥ 70% luminal stenosis are at high risk of stroke recurrence. We aimed to evaluate the relationships between hemodynamics of ICAS revealed by computational fluid dynamics (CFD ...
Chen, Xiangyan, Fan, Florence SY, Feldmann, Edward, Fong, Albert K, Ip, Hing Lung, Johnson, Mark, Leng, Xinyi, Leung, Thomas WH, Liebeskind, David S, Liu, Liping, Miao, Zhongrong, Scalzo, Fabien, Soo, Yannie OY, Wong, Ka Sing   +13 more
core   +3 more sources

Microfluidic Engineering of Chitosan‐Coated Nanoemulsions for Controlled Release and Stability in Space Pharmaceutics

Advanced Materials Technologies, EarlyView.
Microfluidic engineering enables the fabrication of chitosan‐coated, melatonin‐loaded nanoemulsions with controlled release and enhanced physicochemical stability for space pharmaceutics. Interfacial biopolymer coating modulates droplet behavior under accelerated thermal stress and simulated microgravity.
Modupe Adebowale, Nguyen Van Duc Long, Philip M Williams, Volker Hessel   +3 more
wiley   +1 more source

TCT-412 Prognostic implications of pressure-bounded coronary flow reserve versus flow-derived coronary flow reserve.

Journal of the American College of Cardiology, 2017
Pressure-bounded coronary flow reserve (Pb-CFR) is a novel technique that estimates the bounds of CFR from routine pressure measurements, but has not been compared with flow-derived CFR (CFR) regarding clinical outcome. We compared the long-term prognostic value of Pb-CFR versus CFR.
Gilbert Wijntjens, Martijn van Lavieren, Tim van de Hoef, Mauro Echavarria Pinto, Martijn Meuwissen, Valérie Stegehuis, Karel Koch, Steven Chamuleau, Michiel Voskuil, Robbert de Winter, Jan Tijssen, Javier Escaned, Jan Piek   +12 more
openaire   +1 more source

Evaluating the impact of fractional flow reserve-guided percutaneous coronary intervention in intermediate coronary artery lesions on the mode of treatment and their outcomes: An Iranian experience. [PDF]

, 2015
BACKGROUND: Today, the fractional flow reserve (FFR) guides the physician to select suitable patients with intermediate severity coronary lesions in angiography that should be treated or not with stent.
Akhbari, Mohammad Reza, Golshahi, Jafar, Khosravi, Alireza, Ostovar, Afshin, Pourbehi, Mohammad Reza, Pourmoghaddas, Masoud, Shirani, Shahin, Ziaee-Bideh, Fereshteh   +7 more
core   +3 more sources

Graphene‐Interfaced Stretchable Sweat Patch for Multiplexed Electrochemical Monitoring of IL‐6, Glucose, and Calcium Ions

Advanced Materials Technologies, EarlyView.
Flexible sweat sensor patch integrating graphene‑interfaced gold microelectrodes functionalized with bio‑receptors and ion‑selective membrane, coupled with a capillary‑driven microfluidic layer and portable potentiostat electronics for multiplexed monitoring of inflammatory, metabolic, and electrolyte biomarkers in microliter sweat volumes.
Roomia Memon, Ali Tufani, Süleyman Çelik, Javed H. Niazi, Anjum Qureshi   +4 more
wiley   +1 more source

The multi-modality cardiac imaging approach to the Athlete's heart: an expert consensus of the European Association of Cardiovascular Imaging [PDF]

, 2015
The term 'athlete's heart' refers to a clinical picture characterized by a slow heart rate and enlargement of the heart. A multi-modality imaging approach to the athlete's heart aims to differentiate physiological changes due to intensive training in the
Abergel, Abhayaratna, Andersson, Angell, Bartram, Basavarajaiah, Blair, Bossone, Bruder, Caso, Chandra, Corrado, Corrado, D'Andrea, D'Andrea, D'Andrea, D'Andrea, D'Andrea, D'Andrea, D'Andrea, Di Paolo, Douglas, Estorch, Fagard, Fagard, Florescu, Gabrielli, Galderisi, Galderisi, Garber, George, Gilbert, Goldhammer, Grothues, Hauser, Hildick-Smith, Kalliokoski, Kim, Knutsen, La Gerche, La Gerche, Ljungqvist, Mahrholdt, Makan, Maron, Maron, Maron, Maron, Maron, Matsumura, Matsuo, Montgomery, Moon, Moon, Morganroth, Mousavi, Nagueh, Nottin, O'Hanlon, Pattynama, Payne, Pelliccia, Pelliccia, Petersen, Pluim, Prakken, Rehr, Richand, Rickers, Rudski, Saghir, Scharf, Scharhag, Schwartz, Semelka, Sen-Chowdhry, Sen-Chowdhry, Severino, Sharma, Shave, Shave, Spirito, Steinvil, Teramoto, Terry, Thomas, Urhausen, Vinereanu, Whyte, Wolfe, Zeppilli, Zoncu   +91 more
core   +4 more sources

Cross‐Scale Hierarchical Targeted Delivery System Based on Small‐Scale Magnetic Robots

Advanced Robotics Research, EarlyView.
This article reviews a cross‐scale hierarchical targeted delivery system that integrates magnetic continuum robots and magnetic microrobots. By combining rapid long‐range navigation with precise microscale targeting, the system overcomes key limitations of single‐scale approaches.
Junjian Zhou, Zhiqiang Chen, Yuanbiao Ma, Zhiqiang Tang, Qianqian Wang   +4 more
wiley   +1 more source

Tetrahydrobiopterin restores impaired coronary microvascular dysfunction in hypercholesterolaemia [PDF]

, 2018
Purpose: Tetrahydrobiopterin (BH4) is an essential co-factor for the synthesis of nitric oxide (NO), and BH4 deficiency may cause impaired NO synthase (NOS) activity.
Camici, Paolo, Kaufmann, Philipp, Koepfli, Pascal, Luscher, Thomas, Namdar, Mehdi, Siegrist, Patrick, Wyss, Christophe   +6 more
core   +1 more source