keyword
MENU ▼
Read by QxMD icon Read
search

Pulmonary blood flow

keyword
https://www.readbyqxmd.com/read/29049710/the-effect-of-antegrade-pulmonary-blood-flow-following-a-late-bidirectional-glenn-procedure
#1
Tao Yan, Guang Tong, Ben Zhang, Feng Yan, Xuan Zhou, Xianyue Wang, Hua Lu, Tao Ma, Xiaowu Wang, Hao Yu, Zhongchan Sun, Weida Zhang
OBJECTIVES: The effect of antegrade pulmonary blood flow (APBF) has never been studied in the bidirectional Glenn (BDG) procedure performed late. METHODS: Records of 112 consecutive patients who had a BDG procedure during a 10-year period were reviewed retrospectively. The patients were divided into 2 groups based on whether APBF occurred following the BDG procedure (APBF group, n = 81) or not (non-APBF group, n = 31). The median age at the BDG procedure was 6...
October 13, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/29049701/effects-of-blood-flow-dynamics-on-autologous-pericardial-degeneration-in-reconstructed-pulmonary-arteries
#2
Nobuyasu Kato, Masaaki Yamagishi, Keiichi Itatani, Takako Miyazaki, Yoshinobu Maeda, Satoshi Asada, Yoshiro Matsui, Hitoshi Yaku
OBJECTIVES: To clarify the risk factors for abnormal degeneration of autologous pericardium, the mechanical stress on the endothelial tissue caused by turbulent blood flow in the pulmonary artery (PA) reconstructed with autologous pericardium and major aortopulmonary collateral arteries was assumed in pulmonary atresia and ventricular septal defect. METHODS: Patient-specific PA models were created for 6 patients based on their past computed tomography images taken after unifocalization of major aortopulmonary collateral arteries...
October 12, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/29048110/morphometric-and-morphologic-parameters-of-the-heart-in-healthy-alouatta-guariba-clamitans-cabrera-1940
#3
Murilo Gomes de Soutello Charlier, Maurício Gianfrancesco Filippi, Carolina Hagy Girotto, Vanessa Lanes Ribeiro, Carlos Roberto Teixeira, Maria Lúcia Gomes Lourenço, Luiz Carlos Vulcano
BACKGROUND: This study aimed at assessing the heart function of one neotropical primate (Alouatta guariba clamitans) kept in captivity using radiography, electrocardiogram (ECG) and Doppler echocardiography. METHODS: Ten adult healthy howler monkeys (A. g. clamitans) were evaluated under general anaesthesia. Vertebral Heart Scores (VHS) were obtained from radiographic studies. Ejection fraction, shortening fraction of left ventricle, left atrial/aortic root ratio, ascending aortic diameter, peak velocity of pulmonary, mitral, tricuspid and aortic blood flow and other values were measured by Doppler echocardiography...
October 19, 2017: Journal of Medical Primatology
https://www.readbyqxmd.com/read/29047321/perioperative-and-anesthetic-considerations-in-pulmonary-atresia-with-intact-ventricular-septum
#4
Stephen Gleich, Gregory J Latham, Denise Joffe, Faith J Ross
Pulmonary atresia with intact ventricular septum (PA/IVS) is a rare right-heart obstructive lesion with a wide anatomic and physiologic spectrum of disease, ranging from simple membranous pulmonary valve atresia with a fully developed right ventricle (RV) to a severely hypoplastic RV and ventriculocoronary (RV-coronary) fistulas. Affected neonates are dependent on prostaglandin for adequate pulmonary blood flow. Depending on the severity of disease, treatment options range from transcatheter pulmonary valve perforation and ultimate biventricular repair to staged single-ventricle palliation...
October 1, 2017: Seminars in Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/29047088/lung-ischaemia-reperfusion-injury-the-role-of-reactive-oxygen-species
#5
Oleg Pak, Akylbek Sydykov, Djuro Kosanovic, Ralph T Schermuly, Alexander Dietrich, Katrin Schröder, Ralf P Brandes, Thomas Gudermann, Natascha Sommer, Norbert Weissmann
Lung ischaemia-reperfusion injury (LIRI) occurs in many lung diseases and during surgical procedures such as lung transplantation. The re-establishment of blood flow and oxygen delivery into the previously ischaemic lung exacerbates the ischaemic injury and leads to increased microvascular permeability and pulmonary vascular resistance as well as to vigorous activation of the immune response. These events initiate the irreversible damage of the lung with subsequent oedema formation that can result in systemic hypoxaemia and multi-organ failure...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29046200/-readmission-of-children-with-bronchopulmonary-dysplasia-in-the-first-2-years-of-life-a-clinical-analysis-of-121-cases
#6
Jing-Yi You, Chang Shu, Cai-Hui Gong, Sha Liu, Zhou Fu
OBJECTIVE: To investigate the clinical features of readmitted children with bronchopulmonary dysplasia (BPD) in the first 2 years of life. METHODS: A retrospective analysis was performed for the clinical data of 242 children with BPD who were readmitted due to recurrent lower respiratory tract infection (LRTI) in the first 2 years of life. RESULTS: Among all the 242 children with BPD, 115(47.5%) had wheezing, and the children aged 1-2 years had a significantly higher incidence rate of wheezing than those aged less than 1 year (P<0...
October 2017: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/29045974/-echocardiographic-diagnosis-of-infracardiac-total-anomalous-pulmonary-venous-connection
#7
S T Ren, Y Wang, J H Zhou, J Long, C H Wang, D B Li, Y Z Huang
OBJECTIVE: To investigate the clinical usefulness of echocardiography in the diagnosis of infracardiac total anomalous pulmonary venous connection (ITAPVC) in neonates and infants. METHODS: Retrospective analysis on 8 patients with ITAPVC was performed using echocardiography between April 2006 and December 2016. There were 4 boys and 4 girls with a mean age of 79.8 days (ranging from 15 to 195 days). A combined scanning via parasternal, subcostal and apical acoustic windows had been employed to diagnose ITAPVC and to trace the course and site of the anomalous pulmonary venous drainage, and to confirm the direction of the inter-atrial shunt and enlargement of right atrium and right ventricle...
October 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/29044493/combining-echo-and-natriuretic-peptides-to-guide-heart-failure-care-in-the-outpatient-setting-a-position-paper
#8
REVIEW
Frank Lloyd Dini, Erberto Carluccio, Fabrizio Montecucco, Gian Marco Rosa, Paolo Fontanive
BACKGROUND: Chronic heart failure (HF) is a relevant and growing public health problem. Although the prognosis has recently improved, it remains a lethal disease, with a mortality that equals or exceeds that of many malignancies. Furthermore, chronic HF is costly, representing a large and growing drain on healthcare resources. METHODS: This narrative review is based on the material searched for and obtained via PubMed up to May 2017. The search terms we used were: "heart failure, echocardiography, natriuretic peptides" in combination with "treatment, biomarkers, guidelines"...
October 16, 2017: European Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29042354/a-comparison-between-patent-ductus-arteriosus-stent-and-modified-blalock-taussig-shunt-as-palliation-for-infants-with-ductal-dependent-pulmonary-blood-flow-insights-from-the-congenital-catheterization-research-collaborative
#9
Andrew C Glatz, Christopher J Petit, Bryan H Goldstein, Michael S Kelleman, Courtney E McCracken, Alicia McDonnell, Timothy Buckey, Christopher E Mascio, Subi Shashidharan, R Allen Ligon, Jingning Ao, Wendy Whiteside, W Jack Wallen, Christina M Metcalf, Varun Aggarwal, Hitesh Agrawal, Athar M Qureshi
Background -Infants with ductal-dependent pulmonary blood flow may undergo palliation with either a patent ductus arteriosus (PDA) stent or modified Blalock-Taussig (BT) shunt. A balanced multi-center comparison of these two approaches is lacking. Methods -Infants with ductal-dependent pulmonary blood flow, palliated with either PDA stent or BT shunt from 1/08 to 11/15, were reviewed from the four member centers of the Congenital Catheterization Research Collaborative. Outcomes were compared using propensity score adjustment to account for baseline differences between groups...
October 17, 2017: Circulation
https://www.readbyqxmd.com/read/29039531/prognostic-implications-and-procoagulant-activity-of-phosphatidylserine-exposure-of-blood-cells-and-microparticles-in-patients-with-atrial-fibrillation-treated-with-pulmonary-vein-isolation
#10
Huan Meng, Junjie Kou, Ruishuang Ma, Wenbo Ding, Yan Kou, Muhua Cao, Zengxiang Dong, Yayan Bi, Hemant S Thatte, Jialan Shi
The present study aimed to evaluate the procoagulant effects of phosphatidylserine (PS) exposure on blood cells and microparticles (MPs), and examine its role in predicting early recurrence atrial fibrillation (ERAF) in patients with atrial fibrillation (AF) treated with pulmonary vein isolation (PVI). Blood samples were obtained from 40 healthy controls and 56 patients with AF at baseline (prior to PVI), and 0, 1 h, 1 day, 3 days and 7 days following PVI. The exposure of PS (PS+) to blood cells (platelets, erythrocytes and leukocytes) and MPs was detected using flow cytometry...
October 11, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29036571/atrial-flow-dynamics-as-a-determinant-of-tissue-temperature-during-balloon-cryoablation
#11
Justin Ghosh, Mark A McGuire
Aims: Balloon cryoablation is an accepted method of achieving pulmonary vein isolation for the treatment of atrial fibrillation. The relationship between blood flow in the atrium and cryo energy delivery to the tissue remains poorly understood. Methods and results: Controlled cryoablations were performed in vitro using a pulmonary vein phantom constructed from bovine muscle, providing a 20 mm vein ostium. A temperature sensor was mounted within the 'vein wall' at a 1 mm tissue depth...
October 4, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/29031573/aerosol-furosemide-for-dyspnea-controlled-delivery-does-not-improve-effectiveness
#12
Capucine Morélot-Panzini, Carl R O'Donnell, Robert W Lansing, Richard M Schwartzstein, Robert B Banzett
Aerosolized furosemide has been shown to relieve dyspnea; nevertheless, all published studies have shown great variability in response. This dyspnea relief is thought to result from the stimulation of slowly adapting pulmonary stretch receptors simulating larger tidal volume. We hypothesized that better control over aerosol administration would produce more consistent dyspnea relief; we used a clinical ventilator to control inspiratory flow and tidal volume. Twelve healthy volunteers inhaled furosemide (40mg) or placebo in a double blind, randomized, crossover study...
October 11, 2017: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/29030751/effects-of-regional-perfusion-block-in-healthy-and-injured-lungs
#13
Barbara Cambiaghi, Francesco Vasques, Onnen Mörer, Christian Ritter, Tommaso Mauri, Nils Kunze-Szikszay, Karin Holke, Francesca Collino, Giorgia Maiolo, Francesca Rapetti, Elias Schulze-Kalthoff, Tommaso Tonetti, Günter Hahn, Michael Quintel, Luciano Gattinoni
BACKGROUND: Severe hypoperfusion can cause lung damage. We studied the effects of regional perfusion block in normal lungs and in the lungs that had been conditioned by lavage with 500 ml saline and high V T (20 ml kg(-1)) ventilation. METHODS: Nineteen pigs (61.2 ± 2.5 kg) were randomized to five groups: controls (n = 3), the right lower lobe block alone (n = 3), lavage and high V T (n = 4), lung lavage, and high V T plus perfusion block of the right (n = 5) or left (n = 4) lower lobe...
October 13, 2017: Intensive Care Medicine Experimental
https://www.readbyqxmd.com/read/29030339/muscle-%C3%AE-adrenergic-responsiveness-during-exercise-and-atp-induced-vasodilation-in-chronic-obstructive-pulmonary-disease-patients
#14
Ulrik Winning Iepsen, Gregers Druedal Wibe Munch, Camilla Koch Ryrsø, Niels H Secher, Peter Lange, Pia Thaning, Bente Klarlund Pedersen, Stefan P Mortensen
Sympathetic vasoconstriction is blunted in exercising muscle (functional sympatholysis) but becomes attenuated with age. We tested the hypothesis that functional sympatholysis is further impaired in chronic obstructive pulmonary disease (COPD) patients. We determined leg blood flow (LBF) and calculated leg vascular conductance (LVC) during 1) femoral-arterial Tyramine infusion (evokes endogenous norepinephrine release; 1 µmol min(-1) kg leg mass(-1)); 2) one-legged knee-extensor exercise with and without Tyramine infusion (10 W and 20% of maximal workload (WLmax)); 3) ATP (0...
October 13, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29025748/compromised-cerebrovascular-regulation-and-cerebral-oxygenation-in-pulmonary-arterial-hypertension
#15
Simon Malenfant, Patrice Brassard, Myriam Paquette, Olivier Le Blanc, Audrey Chouinard, Valérie Nadeau, Philip D Allan, Yu-Chieh Tzeng, Sébastien Simard, Sébastien Bonnet, Steeve Provencher
BACKGROUND: Functional cerebrovascular regulatory mechanisms are important for maintaining constant cerebral blood flow and oxygen supply in heathy individuals and are altered in heart failure. We aim to examine whether pulmonary arterial hypertension (PAH) is associated with abnormal cerebrovascular regulation and lower cerebral oxygenation and their physiological and clinical consequences. METHODS AND RESULTS: Resting mean flow velocity in the middle cerebral artery mean flow velocity in the middle cerebral artery (MCAvmean); transcranial Doppler), cerebral pressure-flow relationship (assessed at rest and during squat-stand maneuvers; analyzed using transfer function analysis), cerebrovascular reactivity to CO2, and central chemoreflex were assessed in 11 patients with PAH and 11 matched healthy controls...
October 12, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28994575/thrombin-activatable-microbubbles-as-potential-ultrasound-contrast-agents-for-the-detection-of-acute-thrombosis
#16
Jacques Lux, Alexander M Vezeridis, Kenneth Hoyt, Stephen Roy Adams, Amanda M Armstrong, Shashank R Sirsi, Robert Mattrey
Acute deep vein thrombosis (DVT) is the formation of a blood clot in the deep veins of the body that can lead to fatal pulmonary embolism. Acute DVT is difficult to distinguish from chronic DVT by ultrasound (US), the imaging modality of choice, and is therefore treated aggressively with anticoagulants, which can lead to internal bleeding. Here we demonstrate that conjugating perfluorobutane (PFB)-filled microbubbles (MBs) with thrombin-sensitive activatable cell-penetrating peptides (ACPP) could lead to the development of contrast agents that detect acute thrombosis with US imaging...
October 10, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28994140/fetal-lung-volume-and-pulmonary-artery-changes-in-congenital-heart-disease-with-decreased-pulmonary-blood-flow-quantitative-ultrasound-analysis
#17
Yong Guo, Xiaowei Liu, Xiaoyan Gu, Ye Zhang, Lin Sun, Yihua He
BACKGROUND: It has been reported that congenital heart disease with decreased pulmonary blood flow (CHD-DPBF) may affect postnatal lung morphogenesis and function. However, there has been a lack of information regarding the impact of CHD-DPBF on prenatal fetal lung development. METHODS: Fifty-four fetuses with CHD-DPBF were compared with 110 controls. Fetal lung volume (FLV) was estimated using three-dimensional ultrasonography (3D-US). Estimated fetal weight (EFW) and McGoon index (MGI) were estimated using two-dimensional ultrasonography (2D-US)...
October 10, 2017: Echocardiography
https://www.readbyqxmd.com/read/28990213/the-complex-relationship-among-arteriovenous-access-heart-and-circulation
#18
EDITORIAL
Carlo Basile, Carlo Lomonte
There are currently near 400 000 patients on hemodialysis in the United States. More than 50% of those treated by chronic hemodialysis die because of a cardiovascular (CV) event. The majority of these patients have functional arteriovenous fistulas (AVFs). AVFs have an adverse effect on cardiac function, but their exact contribution to CV morbidity is not clear. It has long been known that a vascular access with an inappropriately high-flow rate may cause high-output heart failure. Paradoxically, there may be hemodynamic and cardiopulmonary benefits conferred by AVF particularly in severe chronic obstructive pulmonary disease...
October 9, 2017: Seminars in Dialysis
https://www.readbyqxmd.com/read/28989117/brachial-artery-blood-flow-dynamics-during-sinusoidal-leg-cycling-exercise-in-humans
#19
Yoshiyuki Fukuba, Masako Y Endo, Ayaka Kondo, Yuka Kikugawa, Kohei Miura, Hideaki Kashima, Masaki Fujimoto, Naoyuki Hayashi, Yoshiyuki Fukuoka, Shunsaku Koga
To explore the control of the peripheral circulation of a nonworking upper limb during leg cycling exercise, blood flow (BF) dynamics in the brachial artery (BA) were determined using a sinusoidal work rate (WR) exercise. Ten healthy subjects performed upright leg cycling exercise at a constant WR for 30 min, followed by 16 min of sinusoidal WR consisting of 4-min periods of WR fluctuating between a minimum output of 20 W and a maximum output corresponding to ventilatory threshold (VT). Throughout the protocol, pulmonary gas exchange, heart rate (HR), mean arterial blood pressure (MAP), blood velocity (BV), and cross-sectional area of the BA, forearm skin BF (SBF), and sweating rate (SR) were measured...
October 2017: Physiological Reports
https://www.readbyqxmd.com/read/28987568/short-term-effects-of-various-ozone-metrics-on-cardiopulmonary-function-in-chronic-obstructive-pulmonary-disease-patients-results-from-a-panel-study-in-beijing-china
#20
Hongyu Li, Shaowei Wu, Lu Pan, Junhui Xu, Jiao Shan, Xuan Yang, Wei Dong, Furong Deng, Yahong Chen, Masayuki Shima, Xinbiao Guo
BACKGROUND: Short-term exposure to ambient air pollution has been associated with lower pulmonary function and higher blood pressure (BP). However, controversy remains regarding the relationship between ambient multiple daily ozone (O3) metrics and cardiopulmonary health outcomes, especially in the developing countries. OBJECTIVES: To investigate and compare the short-term effects of various O3 metrics on pulmonary function, fractional exhaled nitric oxide (FeNO) and BP in a panel study of COPD patients...
October 5, 2017: Environmental Pollution
keyword
keyword
39447
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"