Results 61 to 70 of about 3,950,906 (300)

Influence of age and hemodynamics on myocardial blood flow and flow reserve. [PDF]

Circulation, 1993
BACKGROUND Aging is associated with changes of the systolic blood pressure that may increase cardiac work and myocardial blood flow at rest and reduce the myocardial flow reserve. This might be misinterpreted as age-related impairment of the coronary vasodilator capacity.
J, Czernin, P, Müller, S, Chan, R C, Brunken, G, Porenta, J, Krivokapich, K, Chen, A, Chan, M E, Phelps, H R, Schelbert   +9 more
openaire   +2 more sources

Microvascular Damage Is Associated With Carotid Wall Structural Changes in Systemic Sclerosis: A Capillaroscopy and Ultrasound‐Based Observational Study

Arthritis Care &Research, EarlyView.
Objective Systemic sclerosis (SSc) is characterized by cardiovascular risk excess not fully explained by traditional factors. Whether the severity of microvascular damage correlates with structural subclinical atherosclerosis remains unclear. We investigated the relationship between nailfold videocapillaroscopy (NVC) abnormalities and carotid ...
Eugenio Capparelli, Luca Clerici, Francesco Lapia, Giusy C. Moltisanti, Eleonora Zaccara, Greta Pellegrino, Daniela Bompane, Francesca Capelli, Letizia Ferrami, Laura Castelnovo, Antonio Tamburello, Maria Sole Chimenti, Paola Faggioli, Antonino Mazzone   +13 more
wiley   +1 more source

Relation between Coronary Flow Reserve and Myocardial Perfusion State and Change of Coronary Flow Reserve in Acute Myocardial Infarction

Korean Circulation Journal, 1999
Background and Objectives:The state of the coronary microcirculation is one of the major determinants of the prognosis of patients who have had successful reperfusion for acute myocardial infarction (AMI. We in- vestigated whether the vasodilatory reserve in the infarcted myocardium correlated with the perfusion state at early recovery phase in 12 ...
Jeong Cheon Ahn, Do Sun Lim, Young Jae Oh, Ho Jun Lee, Sung Hee Shin, Eun Mi Lee, Kyo Seung Hwang, Woo Heuk Song, Chang Gyu Park, Young Hoon Kim, Hong Seog Seo, Wan Joo Shim, Dong Joo Oh, Young Moo Ro   +13 more
openaire   +1 more source

Biodegradable Conductors for Implantable and Wearable Transient Bioelectronics

Advanced Functional Materials, EarlyView.
Biodegradable conductors are essential building blocks for transient bioelectronics, enabling temporary sensing, stimulation, and energy transfer while eliminating the need for device retrieval. This review summarizes biodegradable metals, conducting polymers, ionic conductors, and conductive composites, highlighting degradation mechanisms, material ...
Yicheng Zhu, Yijun Liu, Naoji Matsuhisa
wiley   +1 more source

Bridging the Gap in a Rare Cause of Angina

European Cardiology Review, 2021
Myocardial bridging occurs when coronary arteries run intramurally. Episodes of tachycardia can cause a dynamic obstruction that extends into diastole, compromising coronary filling time, and subsequently leading to ischaemia. Myocardial ischaemia, acute
Sumanth Khadke, Jovana Vidovic, Vinod Patel   +2 more
doaj   +1 more source

Fractional flow reserve after previous myocardial infarction

, 2007
Marques and colleagues have conducted an interesting study on microvascular resistance of viable tissue within an infarcted area. 1 This study is important, not only from a conceptual point of view, but also because it has several relevant implications ...
Pijls, N.H.J.
core   +1 more source

Hemocompatible Glycogen‐Tissue Plasminogen Activator Complexes for Enhanced Blood Clot Dissolution

Advanced Healthcare Materials, EarlyView.
Glycogen–heparin‐cRGD nanoparticles enable targeted delivery of tissue plasminogen activator (tPA) to thrombi through activated platelet recognition. The hemocompatible hybrids minimize interactions with blood and immune cells while retaining enzymatic biodegradability.
Nadiia Davydiuk, Vaidehi Londhe, Susanne Boye, Martin Müller, Carsten Werner, Manfred F. Maitz, Quinn A. Besford   +6 more
wiley   +1 more source

Decreased coronary flow reserve after transient myocardial ischemia in dogs

, 1989
The effect of a transient (15 min) period of regional ischemia on coronary flow reserve in the postischemic myocardium was studied in 24 open chest dogs.
Nicklas, John M., Gips, Sanford J.
core   +1 more source

Radiative Thermal Management for Extreme Environments: Mechanisms and Design Strategies

Advanced Materials, EarlyView.
In this review, we discuss the fundamental mechanisms of radiative cooling and solar heating, material and structural design strategies, hybrid approaches integrating additional heat transfer pathways, and durability‐oriented designs addressing environmental stresses.
Hyung Rae Kim, Haeseong Kim, Joo Hwan Ko, Gil Ju Lee, Dae‐Hyeong Kim, Young Min Song   +5 more
wiley   +1 more source

Comparative Prognostic and Diagnostic Value of Myocardial Blood Flow and Myocardial Flow Reserve After Cardiac Transplantation [PDF]

Journal of Nuclear Medicine, 2019
Cardiac allograft vasculopathy (CAV) is a major cause of graft failure after cardiac transplantation. CAV is characterized by diffuse involvement of epicardial coronary arteries and the microvasculature. PET allows quantification of absolute myocardial blood flow (MBF) and myocardial flow reserve (MFR), which may be accurate markers of CAV severity. We
Robert J H, Miller, Osamu, Manabe, Balaji, Tamarappoo, Sean, Hayes, John D, Friedman, Piotr J, Slomka, Jignesh, Patel, Jon A, Kobashigawa, Daniel S, Berman   +8 more
openaire   +2 more sources