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Pulmonary hypertension

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https://www.readbyqxmd.com/read/28743113/pulmonary-hypertension-in-a-large-cohort-with-hereditary-hemorrhagic-telangiectasia
#1
Veronique Vorselaars, Sebastiaan Velthuis, Marco van Gent, Cornelis Westermann, Repke Snijder, Johannes Mager, Martijn Post
BACKGROUND: Hereditary hemorrhagic telangiectasia (HHT) is a vascular disorder characterized by arteriovenous malformations in the brain, liver, and lungs. Pulmonary hypertension (PH) is increasingly recognized as a severe complication of HHT. However, there are no studies describing the prevalence of PH in HHT compared to HHT-negative controls. OBJECTIVE: To assess the estimated prevalence of PH in patients with HHT compared to HHT-negative controls. METHODS: All consecutive subjects screened for HHT with available genetic testing and echocardiography-based peak tricuspid regurgitation velocity (TRV) measurement were included...
July 26, 2017: Respiration; International Review of Thoracic Diseases
https://www.readbyqxmd.com/read/28742532/pulmonary-pressure-assessment-with-the-total-artificial-heart
#2
David L Joyce, Margaret M Redfield, Sudhir S Kushwaha, Atta Behfar, Barry A Borlaug, Richard C Daly, Gurpreet S Sandhu, Lyle D Joyce
Reversal of pulmonary hypertension has been observed in patients during a bridge to transplant with a left ventricular assist device. Total artificial heart (TAH) implant prevents subsequent right heart catheterization. Consequently, controversy exists over whether the prosthetic right ventricle improves or exacerbates pulmonary hypertension. A pulmonary artery (PA) pressure monitor was placed in two patients undergoing TAH implant, as a bridge to transplant. One patient had pulmonary hypertension at implant; the other had normal pulmonary pressures...
July 24, 2017: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/28742524/early-postnatal-echocardiographic-assessment-of-pulmonary-blood-flow-in-newborns-with-congenital-diaphragmatic-hernia
#3
Florian Kipfmueller, Katrin Heindel, Lukas Schroeder, Christoph Berg, Oliver Dewald, Heiko Reutter, Peter Bartmann, Andreas Mueller
OBJECTIVE: Echocardiography is the most important tool to assess infants with congenital diaphragmatic hernia (CDH) for pulmonary hypertension (PH). The pattern of blood flow in the pulmonary artery [described as time to peak velocity (TPV)/right ventricular ejection time (RVET) ratio] provides distinct information about pulmonary arterial pressure. The aim of our study was to investigate the correlation of TPV/RVET measurements with the most commonly used classification system for PH in CDH newborns and the association of these measurements with outcome parameters...
July 25, 2017: Journal of Perinatal Medicine
https://www.readbyqxmd.com/read/28742187/pulmonell-hypertension-vanligt-vid-kronisk-lungsjukdom-europeiska-riktlinjer-kring-utredning-och-behandling
#4
David Kylhammar, Göran Rådegran
Pulmonary hypertension due to lung diseases In 2015 the European Society of Cardiology and European Respiratory Society published new guidelines on the diagnosis and treatment of pulmonary hypertension (PH). PH due to lung diseases and/or hypoxia was classified as a separate entity. PH is common in lung diseases, but seldom severe. Nevertheless, the presence of PH in a patient with lung disease is associated with worse outcome. If there is clinical suspicion of PH in a patient with lung disease, echocardiography is recommended, and if there are signs of severe PH and/or severe right ventricular dysfunction the patient should be referred to a PH expert centre...
July 21, 2017: Läkartidningen
https://www.readbyqxmd.com/read/28741841/pulmonary-valve-opening-with-two-rotary-left-ventricular-assist-devices-for-biventricular-support
#5
Eric L Wu, Frank Nestler, Matthias Kleinheyer, Michael C Stevens, Jo P Pauls, John F Fraser, Shaun D Gregory
Right ventricular failure is a common complication associated with rotary left ventricular assist device (LVAD) support. Currently, there is no clinically approved long-term rotary right ventricular assist device (RVAD). Instead, clinicians have implanted a second rotary LVAD as RVAD in biventricular support. To prevent pulmonary hypertension, the RVAD must be operated by either reducing pump speed or banding the outflow graft. These modes differ in hydraulic performance, which may affect the pulmonary valve opening (PVO) and subsequently cause fusion, valvular insufficiency, and thrombus formation...
July 25, 2017: Artificial Organs
https://www.readbyqxmd.com/read/28741093/fetal-right-ventricular-prominence-associated-postnatal-abnormalities-and-coarctation-clinical-prediction-tool
#6
Alyssa Power, Alberto Nettel-Aguirre, Deborah Fruitman
Fetal right ventricular (RV) prominence is a known indicator of possible left-sided structural heart disease with a low positive predictive value for aortic coarctation. There is a paucity of data on identifying which fetuses with RV prominence will have postnatal arch obstruction. Our study objectives were to create a clinical prediction tool for coarctation and to describe the diagnostic outcomes of our cohort with fetal RV prominence. We performed a retrospective review of patients referred with fetal RV prominence from January 2009 to October 2015...
July 24, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/28740853/prothrombotic-fibrin-clot-phenotype-in-patients-with-deep-vein-thrombosis-and-pulmonary-embolism-a-new-risk-factor-for-recurrence
#7
REVIEW
Anetta Undas
Prothrombotic fibrin clot phenotype, involving faster formation of dense meshwork composed of thinner and highly branched fibers that are relatively resistant to plasmin-induced lysis, has been reported in patients with not only myocardial infarction or stroke, but also venous thromboembolism (VTE), encompassing deep vein thrombosis (DVT), and/or pulmonary embolism (PE). Prothrombotic fibrin clot phenotype, in particular prolonged clot lysis time, is considered a novel risk factor for VTE as well as venous thrombosis at unusual location, for example, cerebral sinus venous thrombosis, retinal vein obstruction, and Budd-Chiari syndrome...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28740835/severe-pulmonary-hypertension-due-to-combined-pulmonary-fibrosis-and-emphysema-another-cause-of-death-among-smokers
#8
REVIEW
André Carramenha de Góes Hirano, Eduardo Pelegrineti Targueta, Fernando Peixoto Ferraz de Campos, João Augusto Dos Santos Martines, Dafne Andrade, Silvana Maria Lovisolo, Aloisio Felipe-Silva
In 2005, the combined pulmonary fibrosis and emphysema (CPFE) was first defined as a distinct entity, which comprised centrilobular or paraseptal emphysema in the upper pulmonary lobes, and fibrosis in the lower lobes accompanied by reduced diffused capacity of the lungs for carbon monoxide (DLCO). Recently, the fibrosis associated with the connective tissue disease was also included in the diagnosis of CPFE, although the exposure to tobacco, coal, welding, agrochemical compounds, and tire manufacturing are the most frequent causative agents...
April 2017: Autopsy & case reports
https://www.readbyqxmd.com/read/28740685/minimally-invasive-aortic-valve-replacement-in-high-risk-patient-groups
#9
REVIEW
Daniel Fudulu, Harriet Lewis, Umberto Benedetto, Massimo Caputo, Gianni Angelini, Hunaid A Vohra
Minimally invasive aortic valve replacement (AVR) aims to preserve the sternal integrity and improve postoperative outcomes. In low risk patients, this technique can be achieved with comparable mortality to the conventional approach and there is evidence of possible reduction in intensive care and hospital length of stay, transfusion requirement, renal dysfunction, improved respiratory function and increased patient satisfaction. In this review, we aim to asses if these benefits can be transferred to the high risk patient groups...
June 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28739840/mitochondrial-sirtuins-in-cardiometabolic-diseases
#10
REVIEW
Xiaoqiang Tang, Xiao-Feng Chen, Hou-Zao Chen, De-Pei Liu
Mitochondria are heterogeneous and essentially contribute to cellular functions and tissue homeostasis. Mitochondrial dysfunction compromises overall cell functioning, tissue damage, and diseases. The advances in mitochondrion biology increase our understanding of mitochondrial dynamics, bioenergetics, and redox homeostasis, and subsequently, their functions in tissue homeostasis and diseases, including cardiometabolic diseases (CMDs). The functions of mitochondria mainly rely on the enzymes in their matrix...
August 15, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28739752/severe-cardiotoxicity-in-a-patient-with-colorectal-cancer-treated-with-bevacizumab
#11
Jian Chen, Fengcai DU, Baohong Hu, Cheng Chi, Hongjin Chu, Lixin Jiang, Peng Li, Zhaohua Gong
BACKGROUND/AIM: Bevacizumab combined with standard chemotherapeutics has become a choice of treatment for several kinds of cancers. Hypertension, third-degree albuminuria, thrombosis and cardiotoxicity are the reported side-effects of bevacizumab. Among them, cardiotoxicity is a most severe, but rare outcome. We report a case of a 62-year-old female with colorectal carcinoma who was given bevacizumab-containing chemotherapy for more than 20 months and achieved a stable disease during the entire course of treatment...
August 2017: Anticancer Research
https://www.readbyqxmd.com/read/28739174/inhibition-of-mitochondrial-fission-prevents-hypoxia-induced-metabolic-shift-and-cellular-proliferation-of-pulmonary-arterial-smooth-muscle-cells
#12
Valentina Parra, Roberto Bravo-Sagua, Ignacio Norambuena-Soto, Carolina P Hernández-Fuentes, Andrés G Gómez-Contreras, Hugo E Verdejo, Rosemarie Mellado, Mario Chiong, Sergio Lavandero, Pablo F Castro
Inhibition of mitochondrial fission prevents hypoxia-induced metabolic shift and cellular proliferation of pulmonary arterial smooth muscle cells. Valentina Parra, Roberto Bravo-Sagua, Ignacio Norambuena-Soto, Carolina P. Hernández-Fuentes, Andrés G. Gómez-Contreras, Hugo E. Verdejo, Rosemarie Mellado, Mario Chiong, Sergio Lavandero, Pablo F. Castro. Chronic hypoxia exacerbates proliferation of pulmonary arterial smooth muscle cells (PASMC), thereby reducing the lumen of pulmonary arteries. This leads to poor blood oxygenation and cardiac work overload, which are the basis of diseases such as pulmonary artery hypertension (PAH)...
July 21, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28738523/a-natriuretic-peptides-clearance-receptor-s-agonist-reduces-pulmonary-artery-pressures-and-enhances-cardiac-performance-in-preclinical-models-new-hope-for-patients-with-pulmonary-hypertension-due-to-left-ventricular-heart-failure
#13
Emmanuel Eroume Egom, Tiam Feridooni, Rebabonye B Pharithi, Barkat Khan, Haaris A Shiwani, Vincent Maher, Yassine El Hiani, Kishore B S Pasumarthi, Hilaire A Ribama
BACKGROUND: In patients with left ventricular heart failure (HF), the development of pulmonary hypertension (PH) is common and represents a strong predictor of death. Despite recent advances in the pathophysiological understanding there is as yet no prospect of cure of this deadly clinical entity and the majority of patients continue to progress to right ventricular failure and die. Furthermore, there is no single medical treatment currently approved for PH related to HF. There is, therefore an urgent unmet need to identify novel pharmacological agents that will prevent the progressive increased or reverse the elevated pulmonary arterial pressures while enhancing cardiac performance in HF...
July 19, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28738389/pdgf-promotes-the-warburg-effect-in-pulmonary-arterial-smooth-muscle-cells-via-activation-of-the-pi3k-akt-mtor-hif-1%C3%AE-signaling-pathway
#14
Yunbin Xiao, Hongyan Peng, Chenliang Hong, Zhi Chen, Xicheng Deng, Aiping Wang, Fang Yang, Li Yang, Chen Chen, Xuping Qin
BACKGROUND/AIMS: The enhanced proliferation of pulmonary arterial smooth muscle cells (PASMCs) is a central pathological component in pulmonary arterial hypertension (PAH). Both the Warburg effect and platelet-derived growth factor (PDGF) are involved in the proliferation of PASMCs. However, the mechanism underlying the crosstalk between the Warburg effect and PDGF during PASMC proliferation is still unknown. We hypothesized that PDGF promotes the Warburg effect via activating the phosphatidylinositol 3-kinase (PI3K) signaling pathway and hypoxia-inducible factor 1-α (HIF-1α) in proliferative PASMCs...
July 24, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28737730/sildenafil-in-infants-and-children
#15
REVIEW
Larisa Simonca, Robert Tulloh
Pulmonary arterial hypertension (PAH) management has been transformed in recent times with the advent of cheap and effective diagnostic tools and therapy. Sildenafil, a phosphodiesterase-V inhibitor, has been at the centre of this treatment, and its success in treating PAH has led to its widespread uptake in adult and paediatric pulmonary hypertension (PH), as a first line treatment choice. This might apply to persistent pulmonary hypertension of the newborn (PPHN) or bronchopulmonary dysplasia, as well as to more complex diseases, such as idiopathic pulmonary hypertension...
July 24, 2017: Children
https://www.readbyqxmd.com/read/28737623/an-observational-study-of-severe-pertussis-in-100-infants-%C3%A2-120-days-of-age
#16
James D Cherry, Kristen Wendorf, Brooke Bregman, Deborah Lehman, Delma Nieves, John S Bradley, Wilbert H Mason, Linette Sande-Lopez, Merrick Lopez, Myke Federman, Tempe Chen, Dean Blumberg, Samantha Johnston, Hayden T Schwenk, Peggy Weintrub, Kevin K Quinn, Kathleen Winter, Kathleen Harriman
BACKGROUND: Pertussis in young infants is a unique, severe, afebrile, cough illness that is frequently fatal. METHODS: All pertussis cases ≤ 120 days of age admitted to a pediatric intensive care unit (PICU) in California between October 1, 2013 and April 25, 2015 were evaluated. RESULTS: Of 100 pertussis patients ≤ 120 days of age admitted to PICU's, there were 5 deaths. The white blood cell (WBC) counts in the fatal cases were significantly higher than in the non-fatal cases...
July 20, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28737473/association-between-the-high-soluble-fms-like-tyrosine-kinase-1-to-placental-growth-factor-ratio-and-adverse-outcomes-in-asymptomatic-women-with-early-onset-fetal-growth-restriction
#17
Satoshi Shinohara, Yuzo Uchida, Mayuko Kasai, Rei Sunami
OBJECTIVE: To assess whether the high soluble fms-like tyrosine kinase-1 (sFlt-1) to placental growth factor (PlGF) ratio is associated with adverse outcomes (e.g., HELLP syndrome [hemolysis, elevated liver enzymes, and low platelets], severe hypertension uncontrolled by medication, non-reassuring fetal status, placental abruption, pulmonary edema, growth arrest, maternal death, or fetal death) and a shorter duration to delivery in early-onset fetal growth restriction (FGR). METHODS: Thirty-four women with FGR diagnosed at <34...
July 24, 2017: Hypertension in Pregnancy
https://www.readbyqxmd.com/read/28736291/clinical-and-hemodynamic-correlates-and-prognostic-value-of-ve-vco2-slope-in-patients-with-heart-failure-with-preserved-ejection-fraction-and-pulmonary-hypertension
#18
Sebastiaan H C Klaassen, Licette C Y Liu, Yoran M Hummel, Kevin Damman, P van der Meer, Adriaan A Voors, Elke S Hoendermis, Dirk J van Veldhuisen
BACKGROUND: Impaired exercise capacity is one of the hallmarks of heart failure with preserved ejection fraction (HFpEF), but the clinical and hemodynamic correlates and prognostic value of exercise testing in patients with HFpEF is unknown. METHODS: Patients with HFpEF (Left ventricular ejection fraction [LVEF] ≥ 45%) and pulmonary hypertension, underwent cardiopulmonary exercise test (CPX) to measure maximal (peak VO2) and sub maximal (ventilatory equivalent for carbon dioxide [VE/VCO2] slope) exercise capacity...
July 20, 2017: Journal of Cardiac Failure
https://www.readbyqxmd.com/read/28735990/echocardiographic-pulmonary-hypertension-predicts-post-transplantation-renal-allograft-failure
#19
A E Foderaro, G L Baird, A Bazargan-Lari, P E Morrissey, R Y Gohh, A Poppas, J R Klinger, C E Ventetuolo
BACKGROUND: Pulmonary hypertension in the setting of renal transplantation has been associated with early allograft dysfunction and increased mortality, but this relationship has not been extensively studied. METHODS: We performed a retrospective cohort study of adult patients who underwent their first renal transplantation in the years 2003-2009 and had pre-transplantation echocardiograms. Pulmonary hypertension was defined as right ventricular systolic pressure ≥40 mm Hg in the absence of left-sided valvular disease and/or left ventricular ejection fraction ≤50%...
July 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28735657/l-arginine-attenuates-hypobaric-hypoxia-induced-increase-in-ornithine-decarboxylase-1
#20
Li Yuhong, Bai Zhengzhong, Tang Feng, Yang Quanyu, Ri-Li Ge
BACKGROUND: Chronic hypoxia-induced pulmonary hypertension and vascular remodeling have been shown to be associated with ornithine decarboxylase 1 (ODC1). However, few animal studies have investigated the role of ODC1 in acute hypoxia. OBJECTIVES: We investigated ODC1 gene expression, morphologic and functional changes, and the effect of L-arginine as an attenuator in lung tissues of rats exposed to acute hypobaric hypoxia at a simulated altitude of 6000 m. METHODS: Sprague-Dawley rats exposed to simulated hypobaric hypoxia (6000 m) for 24, 48, or 72 hours were treated with L-arginine (L-arginine group, 20 mg/100 g intraperitoneal; n=15) or untreated (non-L-arginine group, n=15)...
July 20, 2017: Wilderness & Environmental Medicine
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