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https://www.readbyqxmd.com/read/29675404/neonatal-hemodynamics-from-developmental-physiology-to-comprehensive-monitoring
#1
REVIEW
Sabine L Vrancken, Arno F van Heijst, Willem P de Boode
Maintenance of neonatal circulatory homeostasis is a real challenge, due to the complex physiology during postnatal transition and the inherent immaturity of the cardiovascular system and other relevant organs. It is known that abnormal cardiovascular function during the neonatal period is associated with increased risk of severe morbidity and mortality. Understanding the functional and structural characteristics of the neonatal circulation is, therefore, essential, as therapeutic hemodynamic interventions should be based on the assumed underlying (patho)physiology...
2018: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/29671149/biological-scoring-system-for-early-prediction-of-acute-bowel-ischemia-after-cardiac-surgery-the-palm-score
#2
Elie Zogheib, Cyril Cosse, Charles Sabbagh, Simon Marx, Thierry Caus, Marc Henry, Joseph Nader, Mathurin Fumery, Michael Bernasinski, Patricia Besserve, Faouzi Trojette, Cedric Renard, Pierre Duhaut, Said Kamel, Jean-Marc Regimbeau, Hervé Dupont
BACKGROUND: Bowel ischemia is a life-threatening emergency defined as an inadequate vascular perfusion leading to bowel inflammation resulting from impaired colonic/small bowel blood supply. Main issue for physicians regarding bowel ischemia diagnosis lies in the absence of informative and specific clinical or biological signs leading to delayed management, resulting in a poorer prognosis, especially after cardiac surgery. The aim of the present series was to propose a simple scoring system based on biological data for the diagnosis of bowel ischemia...
April 18, 2018: Annals of Intensive Care
https://www.readbyqxmd.com/read/29670546/-in-utero-exposure-to-maternal-diabetes-is-associated-with-early-abnormal-vascular-structure-in-offspring
#3
Abdallah Dib, Cyrielle Payen, Jennifer Bourreau, Mathilde Munier, Linda Grimaud, Ziad Fajloun, Laurent Loufrani, Daniel Henrion, Céline Fassot
Aim/hypothesis: In utero exposure to maternal diabetes increases the risk of developing hypertension and cardiovascular disorders during adulthood. We have previously shown that this is associated with changes in vascular tone in favor of a vasoconstrictor profile, which is involved in the development of hypertension. This excessive constrictor tone has also a strong impact on vascular structure. Our objective was to study the impact of in utero exposure to maternal diabetes on vascular structure and remodeling induced by chronic changes in hemodynamic parameters...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29669969/surgical-aortic-valve-replacement-in-octogenerians-in-the-era-of-transcatheter-aortic-valve-replacement
#4
Takashi Yamauchi, Takano Hiroshi, Koichi Toda, Yoshiki Sawa
BACKGROUND: The hospital mortality rate in >80-year-old patients undergoing surgical aortic valve replacement (SAVR) is reportedly satisfactory, but how such patients' functional status both at discharge and during the postoperative hospitalization period might affect their quality of life and medical costs remains unclear.Methods and Results:The adverse events of 161 patients aged >80 years who underwent SAVR with or without coronary artery bypass grafting were retrospectively investigated...
April 17, 2018: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/29664162/a-comprehensive-meta-analysis-of-stem-cell-therapy-for-chronic-angina
#5
Rahman Shah, Samuel B Latham, Sajjad A Khan, Muhammad Shahreyar, Inyong Hwang, Ion S Jovin
BACKGROUND: A substantial proportion of patients with coronary artery disease do not achieve complete revascularization and continue to experience refractory angina despite optimal medical therapy. Recently, stem cell therapy has emerged as a potential therapeutic option for these patients. However, findings of individual trials have been scrutinized because of their small sample sizes and lack of statistical power. Therefore, we conducted an updated comprehensive meta-analysis of available randomized controlled trials (RCTs) with the largest sample size ever reported on this subject...
April 17, 2018: Clinical Cardiology
https://www.readbyqxmd.com/read/29663117/review-of-cardiovascular-imaging-in-the-journal-of-nuclear-cardiology-in-2017-part-2-of-2-myocardial-perfusion-imaging
#6
Fadi G Hage, Wael A AlJaroudi
In 2017, the Journal of Nuclear Cardiology published many high-quality articles. In this review, we will summarize a selection of these articles to provide a concise review of the main advancements that have recently occurred in the field. In the first article of this 2-part series, we focused on publications dealing with positron emission tomography, computed tomography, and magnetic resonance. This review will place emphasis on myocardial perfusion imaging using single-photon emission computed tomography summarizing advances in the field including prognosis, safety and tolerability, the impact of imaging on management, and the use of novel imaging protocols...
April 16, 2018: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/29660944/cardiovascular-response-to-mental-stress-in-mild-cognitive-impairment-and-its-association-with-cerebral-perfusion
#7
Brandon C Henley, Mahsa Shokouhi, Anushree Y Mahajan, Omer T Inan, Ihab Hajjar
Mental stress has been linked to various chronic diseases including Alzheimer's disease, but the mechanisms underlying cognitive decline with mental stress are unknown. Reduced cardiovascular response to stress is associated with cardiovascular disease, and the latter is associated with cognitive impairment. We measured electrodermal activity, blood pressure, and cardiac hemodynamics in cognitively normal and mild cognitive impairment (MCI) adults (n = 76, mean age = 58 years, 46% MCI) during rest, a math test, and face-name recall tasks to derive the following cardiovascular indicators: mean arterial pressure, heart rate, stroke volume and cardiac output...
April 11, 2018: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29660911/the-effects-of-different-remote-ischemic-conditioning-on-ischemia-induced-failure-of-microvascular-circulation-in-humans
#8
Muzaffer Akkoca, Suzan Emel Usanmaz, Serhat Tokgöz, Cüneyt Köksoy, Emine Demirel-Yilmaz
BACKGROUND: Intermittent ischemia in remote tissues can be applied before ischemic injury, during ischemic injury or at the beginning of reperfusion of an index organ ischemia. The aim of this study was to investigate the effect of Remote Ischemic Conditioning (RIC) of the leg on changes in ischemia-induced the microvascular functions of the arm. MATERIAL AND METHODS: Ischemic microvascular injury was induced by arm ischemia (20 min) and reperfusion in healthy, nonsmoker, male volunteers (ischemia group-ISC, n: 9)...
April 13, 2018: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/29656359/myocardial-infarct-size-reduction-provided-by-local-and-remote-ischaemic-preconditioning-references-values-from-the-hatter-cardiovascular-institute
#9
Xavier Rossello, Zhenhe He, Derek M Yellon
PURPOSE: To accurately estimate the effect size of both local or classic ischaemic preconditioning (IPC) and remote ischaemic preconditioning (RIPC) using a pooling data set of 91 animals. METHODS: We combined all the available mouse data collected from our Institute over the last 3 years regarding (i) local IPC (4 cycles of 5 min of global ischaemia/reperfusion injury, IRI, followed by 35-min ischaemia and 2-h reperfusion) in the Langendorff-isolated perfused mouse heart model and (ii) RIPC (3 cycles of 5 min of limb occlusion followed by 40-min ischaemia and 2-h reperfusion) in the in vivo mouse model...
April 14, 2018: Cardiovascular Drugs and Therapy
https://www.readbyqxmd.com/read/29652661/combined-brain-and-heart-magnetic-resonance-imaging-in-systemic-vasculitides-fiction-or-real-need
#10
REVIEW
Sophie I Mavrogeni, George Kitas, Hildo J Lamb, Klearchos Psychoyios, Theodoros Dimitroulas, Loukia Koutsogeorgopoulou, Kyriaki Boki, Vasiliki Vartela, Genovefa Kolovou, George Markousis-Mavrogenis, Cees G Kallenberg, Loic Guillevin, Dimitrios Vassilopoulos
Systemic vasculitides (SVs) is a group of diseases characterised by inflammation/necrosis of the blood vessel wall in various organs. Simultaneous brain and heart involvement is a cause of increased morbidity/mortality in SV. We aimed to present evidence of concurrent brain/heart involvement in SV and the role of a combined brain/heart magnetic resonance imaging (MRI) in their risk stratification. Cerebral vasculitis (CV) can be presented as focal deficits, seizures, headache, neuropsychiatric manifestations or cognitive dysfunction and cardiovascular disease (CVD) as myocardial/vascular inflammation, perfusion/function defects and fibrosis...
April 10, 2018: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/29651108/3d-artificial-round-section-micro-vessels-to-investigate-endothelial-cells-under-physiological-flow-conditions
#11
Riccardo Sfriso, Shengye Zhang, Colette Andrea Bichsel, Oliver Steck, Alain Despont, Olivier Thierry Guenat, Robert Rieben
In the context of xenotransplantation, in ischemia/reperfusion injury as well as in cardiovascular research, the study of the fascinating interplay between endothelial cells (EC) and the plasma cascade systems often requires in vitro models. Blood vessels are hardly reproducible with standard flat-bed culture systems and flow-plate assays are limited in their low surface-to-volume ratio which impedes the study of the anticoagulant properties of the endothelial cells. According to the 3R regulations (reduce, replace and refine animal experimentation) we developed a closed circuit microfluidic in vitro system in which endothelial cells are cultured in 3D round section microchannels and subjected to physiological, pulsatile flow...
April 12, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29621885/improvement-in-exercise-capacity-and-delayed-anaerobic-metabolism-induced-by-far-infrared-emitting-garments-in-active-healthy-subjects-a-pilot-study
#12
Valentina Mantegazza, Mauro Contini, Maurizia Botti, Ada Ferri, Francesca Dotti, Pierluigi Berardi, Piergiuseppe Agostoni
Background Far-infrared-emitting garments have several biological properties including the capability to increase blood perfusion in irradiated tissues. Design The aim of the study was to evaluate whether far-infrared radiation increases exercise capacity and delays anaerobic metabolism in healthy subjects. Methods With a double-blind, crossover protocol, a maximal cardiopulmonary exercise test was performed in 20 volunteers, wearing far-infrared or common sport clothes, identical in texture and colour. Results Comparing far-infrared with placebo garments, higher oxygen uptake at peak of exercise and longer endurance time were observed (peak oxygen uptake 38...
January 1, 2018: European Journal of Preventive Cardiology
https://www.readbyqxmd.com/read/29616230/anesthesia-associated-relative-hypovolemia-mechanisms-monitoring-and-treatment-considerations
#13
Jessica Noel-Morgan, William W Muir
Although the utility and benefits of anesthesia and analgesia are irrefutable, their practice is not void of risks. Almost all drugs that produce anesthesia endanger cardiovascular stability by producing dose-dependent impairment of cardiac function, vascular reactivity, and compensatory autoregulatory responses. Whereas anesthesia-related depression of cardiac performance and arterial vasodilation are well recognized adverse effects contributing to anesthetic risk, far less emphasis has been placed on effects impacting venous physiology and venous return...
2018: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/29615543/intermittent-hypoxia-induces-beneficial-cardiovascular-remodeling-in-left-ventricular-function-of-type-1-diabetic-rat
#14
Fırat Akat, Hakan Fıçıcılar, Ayşegül Durak, Erkan Tuncay, Ali Doğan Dursun, Ferda Topal Çelikkan, Bizden Sabuncuoğlu, Belma Turan, Metin Baştuğ
OBJECTIVE: Depressed mechanical activity is a marked complication in diabetics. Hypoxia has properties for novel diagnostic and therapeutic strategies, while intermittent hypoxia (IH) provides early functional and histologic remodeling, including some cardio benefits in early hemodynamic alterations with histologic remodeling and delayed changes in peripheral vasoreactivity. Therefore, we aimed to examine whether IH application presents a cardioprotective effect, via stabilization of hypoxia-inducible factor (HIF) in streptozotocin (STZ)-induced diabetic rat heart...
April 2018: Anatolian Journal of Cardiology
https://www.readbyqxmd.com/read/29608790/increase-in-perfused-boundary-region-of-endothelial-glycocalyx-is-associated-with-higher-prevalence-of-ischemic-heart-disease-and-lesions-of-microcirculation-and-vascular-wall
#15
Alexander Y Gorshkov, Marina V Klimushina, Sergei A Boytsov, Alexander Y Kots, Nadezhda G Gumanova
OBJECTIVE: Perfused boundary region (PBR) characterizes penetration of red blood cells inside glycocalyx and its thickness can have profound impact on microcirculation and other vascular parameters. The goal of our study was to reliably quantify PBR and assess its potential use as a new marker of cardiovascular pathology. METHODS: The study included 208 patients (123 men and 85 women from 40 to 65 years of age) with various grades of cardiovascular SCORE risk index and ischemic heart disease...
April 2, 2018: Microcirculation: the Official Journal of the Microcirculatory Society, Inc
https://www.readbyqxmd.com/read/29593548/impact-of-nitric-oxide-bioavailability-on-the-progressive-cerebral-and-peripheral-circulatory-impairments-during-aging-and-alzheimer-s-disease
#16
Massimo Venturelli, Anna Pedrinolla, Ilaria Boscolo Galazzo, Cristina Fonte, Nicola Smania, Stefano Tamburin, Ettore Muti, Lucia Crispoltoni, Annamaria Stabile, Alessandra Pistilli, Mario Rende, Francesca B Pizzini, Federico Schena
Advanced aging, vascular dysfunction, and nitric oxide (NO) bioavailability are recognized risk factors for Alzheimer's disease (AD). However, the contribution of AD, per se , to this putative pathophysiological mechanism is still unclear. To better answer this point, we quantified cortical perfusion with arterial spin labeling (PVC-CBF), measured ultrasound internal carotid (ICA), and femoral (FA) artery blood flow in a group of patients with similar age (~78 years) but different cognitive impairment (i.e...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29593228/chronic-kidney-disease-induces-a-systemic-microangiopathy-tissue-hypoxia-and-dysfunctional-angiogenesis
#17
Hans-Ulrich Prommer, Johannes Maurer, Karoline von Websky, Christian Freise, Kerstin Sommer, Hamoud Nasser, Rudi Samapati, Bettina Reglin, Pedro Guimarães, Axel Radlach Pries, Uwe Querfeld
Chronic kidney disease (CKD) is associated with excessive mortality from cardiovascular disease (CVD). Endothelial dysfunction, an early manifestation of CVD, is consistently observed in CKD patients and might be linked to structural defects of the microcirculation including microvascular rarefaction. However, patterns of microvascular rarefaction in CKD and their relation to functional deficits in perfusion and oxygen delivery are currently unknown. In this in-vivo microscopy study of the cremaster muscle microcirculation in BALB/c mice with moderate to severe uremia, we show in two experimental models (adenine feeding or subtotal nephrectomy), that serum urea levels associate incrementally with a distinct microangiopathy...
March 28, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29576016/correction-to-simple-motion-correction-strategy-reduces-respiratory-induced-motion-artifacts-for-k-t-accelerated-and-compressed-sensing-cardiovascular-magnetic-resonance-perfusion-imaging
#18
Ruixi Zhou, Wei Huang, Yang Yang, Xiao Chen, Daniel S Weller, Christopher M Kramer, Sebastian Kozerke, Michael Salerno
Figure 1 of this original publication contained a minor error as one of the lines in the "Reconstruction pipline" was not visible. The updated Fig. 1 is published in this correction article.
March 26, 2018: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29576004/volumetric-nephrogram-represents-renal-function-and-complements-aortic-anatomic-severity-grade-in-predicting-evar-outcomes
#19
Mark D Balceniuk, Lauren Trakimas, Claudia Aghaie, Doran Mix, Khurram Rasheed, Matthew Seaman, Jennifer Ellis, Roan Glocker, Adam Doyle, Michael C Stoner
INTRODUCTION: Chronic kidney disease (CKD) is a predictor of poor outcomes for patients undergoing endovascular aortic aneurysm repair (EVAR). Anatomic severity grade (ASG) represents a quantitative mechanism for assessing anatomical suitability for endovascular aortic repair. Anatomic severity grade has been correlated with repair outcomes and resource utilization. The purpose of this study was to identify a novel renal perfusion metric as a way to assist ASG with predicting EVAR outcomes...
January 1, 2018: Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/29569957/protein-tyrosine-phosphatase-1b-inactivation-limits-aging-associated-heart-failure-in-mice
#20
Marie Besnier, David Coquerel, Julie Favre, Anais Dumesnil, Dominique Guerrot, Isabelle Remy-Jouet, Paul Mulder, Zoubir Djerada, Fabienne Tamion, Vincent Richard, Antoine Ouvrard-Pascaud
Background- We previously showed that Protein Tyrosine Phosphatase 1B inactivation (PTP1B-/- ) in mice improved left ventricular (LV) angiogenesis, perfusion, remodeling and function, and limits endothelial dysfunction after myocardial infarction. However, whether PTP1B inactivation slows aging-associated cardiovascular dysfunction remains unknown. Methods and Results- WT and PTP1B-/- mice were allowed to age until 18 months. Compared to old WT in which aging increased the LV mRNA expression of PTP1B, old PTP1B-/- mice had: 1) reduced cardiac hypertrophy with decreased LV mRNA levels of hypertrophic markers, atrial and brain natriuretic peptides; 2) lower LV fibrosis (collagen: WT 16{plus minus}3, PTP1B-/- 5{plus minus}3 %, p<0...
March 23, 2018: American Journal of Physiology. Heart and Circulatory Physiology
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