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renal haemodynamics

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https://www.readbyqxmd.com/read/28614093/central-diastolic-pressure-decay-mediates-the-relationship-between-aortic-stiffness-and-myocardial-viability-potential-implications-for-aortosclerosis-induced-myocardial-ischemia
#1
Junichiro Hashimoto, Sadayoshi Ito
OBJECTIVE: Stiffening of the aorta often precedes coronary events, but little is known about the aetiological mechanism. We hypothesized that the predisposition to myocardial ischemia could be attributable to aortosclerosis-induced alterations in the central haemodynamics during diastole. METHODS: Using noninvasive tonometry and ultrasonography, we investigated the arterial pressure pulse waveforms, pulse wave velocities (PWVs) and compliance in 222 patients with hypertension...
June 16, 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/28575331/oesophageal-doppler-guided-goal-directed-haemodynamic-therapy-in-thoracic-surgery-a-single-centre-randomized-parallel-arm-trial
#2
K B Kaufmann, L Stein, L Bogatyreva, F Ulbrich, J T Kaifi, D Hauschke, T Loop, U Goebel
Background: Postoperative pulmonary and renal complications are frequent in patients undergoing lung surgery. Hyper- and hypovolaemia may contribute to these complications. We hypothesized that goal-directed haemodynamic management based on oesophageal Doppler monitoring would reduce postoperative pulmonary complications in a randomized clinical parallel-arm trial. Methods: One hundred patients scheduled for thoracic surgery were randomly assigned to either standard haemodynamic management (control group) or goal-directed therapy (GDT group) guided by an oesophageal Doppler monitoring-based algorithm...
June 1, 2017: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/28572879/effects-of-glycaemic-management-on-diabetic-kidney-disease
#3
REVIEW
Richard J MacIsaac, George Jerums, Elif I Ekinci
Hyperglycaemia contributes to the onset and progression of diabetic kidney disease (DKD). Observational studies have not consistently demonstrated a glucose threshold, in terms of HbA1c levels, for the onset of DKD. Tight glucose control has clearly been shown to reduce the incidence of micro- or macroalbuminuria. However, evidence is now also emerging to suggest that intensive glucose control can slow glomerular filtration rate loss and possibly progression to end stage kidney disease. Achieving tight glucose control needs to be balanced against the increasing appreciation that glucose targets for the prevention of diabetes related complications need be individualised for each patient...
May 15, 2017: World Journal of Diabetes
https://www.readbyqxmd.com/read/28564127/impact-of-terlipressin-infusion-during-and-after-live-donor-liver-transplantation-on-incidence-of-acute-kidney-injury-and-neutrophil-gelatinase-associated-lipocalin-serum-levels-a-randomized-controlled-trial
#4
Mohamed Abdelrauf Kandil, Khalid Mousa Abouelenain, Ayman Alsebaey, Hanaa Said Rashed, Mohamed Helmi Afifi, Mohamed Abdelmoneem Mahmoud, Khaled Ahmed Yassen
Acute kidney injury (AKI) with liver transplantation is not uncommon. Impact of Terlipressin infusion on AKI, haemodynamics and plasma concentration of Neutrophil Gelatinase Associated Lipocalin (NGAL) was studied METHODS: Patients (n=50) were randomized (NCT02059460, USA) into 2 equal groups; Terlipressin vs Controls. Terlipressin (1-4 μg/kg/h) was administrated for 5 days. Intraoperative Transoesophageal Doppler for haemodynamic management. Renal functions, peak portal vein blood flow velocity (PPV) and hepatic artery resistive index (HARI) were recorded...
May 31, 2017: Clinical Transplantation
https://www.readbyqxmd.com/read/28558715/modern-peptide-biomarkers-and-echocardiography-in-cardiac-healthy-haemodialysis-patients
#5
Franz Maximilian Rasche, Stephan Stoebe, Thomas Ebert, Silvana Feige, Andreas Hagendorff, Wilma Gertrud Rasche, Filip Barinka, Volker Busch, Ulrich Sack, Jochen G Schneider, Stephan Schiekofer
BACKGROUND: In this prospective study, we aimed to assess the haemodynamic changes before and after haemodialysis (HD) in cardiac healthy subjects on chronic HD by imaging methods and endocrine markers of fluid balance. METHODS: Mid-regional pro-atrial natriuretic peptide (MR-proANP), N-terminal prohormone of brain natriuretic peptide (NT-proBNP), vasopressin (AVP) and copeptin (CT-proAVP), metanephrines and normetanephrines, renin and aldosterone, standard transthoracic echocardiography and diameter of vena cava inferior (VCID) were performed in 20 patients with end stage renal disease (CKD5D) before and after HD and were stratified in residual excretion (RE, less or more 0...
May 30, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28532189/non-selective-beta-blocker-treatment-does-not-impact-on-kidney-function-in-cirrhotic-patients-with-varices
#6
Bernhard Scheiner, Diego Parada-Rodriguez, Theresa Bucsics, Philipp Schwabl, Mattias Mandorfer, Nikolaus Pfisterer, Florian Riedl, Wolfgang Sieghart, Arnulf Ferlitsch, Michael Trauner, Markus Peck-Radosavljevic, Thomas Reiberger
GOALS AND BACKGROUND: Non-selective beta-blockers (NSBBs) are used for bleeding prophylaxis in cirrhotic patients with gastroesophageal varices (GEVs). Recent data suggested that NSBB treatment might increase the risk of renal dysfunction in patients with refractory ascites due to an impaired response to acute haemodynamic stress. STUDY: Retrospective longitudinal assessment of kidney function in a cohort of cirrhotic patients with GEVs with vs. without NSBB therapy...
May 22, 2017: Scandinavian Journal of Gastroenterology
https://www.readbyqxmd.com/read/28489448/immediate-postoperative-management-and-complications-on-the-intensive-care-unit
#7
Eleanor Bates, Daniel Martin
The postoperative management of patients immediately after liver transplantation requires knowledge of this complex surgery and the physiology that accompanies liver failure. A multidisciplinary approach to the care of these patients is essential in order to reduce postoperative complications and preserve function in the transplanted organ. By their nature, patients undergoing liver transplantation have complicated medical problems before surgery which must be borne in mind when managing them after surgery...
May 2, 2017: British Journal of Hospital Medicine
https://www.readbyqxmd.com/read/28483456/protective-role-of-cgmp-in-early-sepsis
#8
Vanessa Kovalski, Ana P Prestes, Junior G Oliveira, Gustavo F Alves, Daiandra Fr Colarites, Jheniffer El Mattos, Regina Sordi, José Cr Vellosa, Daniel Fernandes
Septic shock, which is triggered by microbial products, is mainly characterised by inadequate tissue perfusion, which can lead to multiple organ dysfunction and death. An intense release of vasoconstrictors agents occurs in the early stages of shock, which can lead to ischemic injury. In this scenario, cGMP could play a key role in counterbalancing these agents and preventing tissue damage. Sildenafil, which is a phosphodiesterase-5 inhibitor, increases cGMP in smooth muscle cells and promotes vasodilation...
July 15, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28468676/blood-pressure-deficits-in-acute-kidney-injury-not-all-about-the-mean-arterial-pressure
#9
Lui G Forni, Michael Joannidis
Acute kidney injury (AKI) is associated with increased morbidity and mortality. Although there are many causes of AKI, it is known that patients undergoing high-risk surgery are known to be at significant risk. Although much effort has centred on the minimum arterial pressure needed to maintain renal perfusion, this tends to be based on relatively crude measures such as the mean arterial pressure (MAP), which is widely used as an index for the optimal blood pressure. The rationale behind maintaining MAP is to provide adequate organ perfusion, although this is difficult to assess other than by applying crude end-points...
May 4, 2017: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/28465331/renal-resistive-index-reflects-fontan-pathophysiology-and-predicts-mortality
#10
Hideo Ohuchi, Jun Negishi, Yohsuke Hayama, Aya Miyazaki, Isao Shiraishi, Hajime Ichikawa
OBJECTIVES: The renal resistive index (RRI) reflects non-renal pathophysiology, such as great artery stiffness, haemodynamics and even end-organ damage in patients with hypertension. This study was conducted to clarify the clinical significance of the RRI in Fontan pathophysiology. METHODS: We measured the RRI in 280 consecutive Fontan patients and 36 healthy controls. RESULTS: The patients exhibited a higher RRI than the controls (0.71±0...
May 2, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/28463737/propafenone-for-supraventricular-arrhythmias-in-septic-shock-comparison-to-amiodarone-and-metoprolol
#11
M Balik, I Kolnikova, M Maly, P Waldauf, G Tavazzi, J Kristof
PURPOSE: The occurence of supraventricular arrhythmias associate with an unfavourable prognosis in septic shock. Propafenone could be a feasible antiarrhythmic. MATERIALS AND METHODS: Patients collected over a period of 24months were divided into the three groups based on antiarrhythmic: Group1(amiodarone), Group2(propafenone), Group3(metoprolol). Type of arrhythmia, cardioversion rates, demographic, haemodynamic, laboratory parameters were recorded in the first 24h...
April 26, 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/28449402/postprandial-renal-haemodynamic-effect-of-lixisenatide-versus-once-daily-insulin-glulisine-in-type-2-diabetes-patients-on-insulin-glargine-an-8-week-randomised-open-label-trial
#12
Lennart Tonneijck, Marcel H A Muskiet, Mark M Smits, Trynke Hoekstra, Mark H H Kramer, A H Jan Danser, Michaela Diamant, Jaap A Joles, Daniël H van Raalte
AIMS: To determine whether lixisenatide, a prandial short-acting glucagon-like peptide receptor agonist (GLP-1RA), ameliorates postprandial glomerular hyperfiltration in type 2 diabetes mellitus (T2DM)-patients compared to insulin-glulisine (iGlu) . METHODS: Postprandial renal haemodynamic effects of 8-week treatment with lixisenatide 20 µg versus once-daily titrated iGlu were measured in 35 overweight T2DM-patients inadequately controlled on insulin-glargine, with or without metformin (mean±SD age 62 ± 7years, HbA1c 8...
April 27, 2017: Diabetes, Obesity & Metabolism
https://www.readbyqxmd.com/read/28444472/the-effect-of-sodium-glucose-co-transporter-2-sglt-2-inhibitors-on-cardiometabolic-profile-beyond-the-hypoglycaemic-action
#13
Eirini Lioudaki, Emmanouil S Androulakis, Martin Whyte, Konstantinos G Stylianou, Eugenios K Daphnis, Emmanouil S Ganotakis
Type 2 diabetes mellitus (T2DM) has growing prevalence worldwide and major clinical implications, chiefly cardiovascular (CV) and renal disease burden. Sodium-glucose co-transporter (SGLT)-2 inhibitors are a new drug class in the management of T2DM with a mechanism of action independent of insulin. In addition to their hypoglycaemic effect, SGLT-2 inhibitors appear to have haemodynamic and nephroprotective effects. Studies have consistently showed a modest but significant blood pressure (BP) reduction. Metabolic benefits are also attributed to SGLT-2 inhibitors with a modest but consistent body weight decrease recorded along with improvements in lipid profile and uric acid levels...
April 25, 2017: Cardiovascular Drugs and Therapy
https://www.readbyqxmd.com/read/28434235/recirculation-zone-length-in-renal-artery-is-affected-by-flow-spirality-and-renal-to-aorta-flow-ratio
#14
Ashkan Javadzadegan, David Fulker, Tracie Barber
Haemodynamic perturbations such as flow recirculation zones play a key role in progression and development of renal artery stenosis, which typically originate at the aorta-renal bifurcation. The spiral nature of aortic blood flow, division of aortic blood flow in renal artery as well as the exercise conditions have been shown to alter the haemodynamics in both positive and negative ways. This study focuses on the combinative effects of spiral component of blood flow, renal-to-aorta flow ratio and the exercise conditions on the size and distribution of recirculation zones in renal branches using computational fluid dynamics technique...
April 24, 2017: Computer Methods in Biomechanics and Biomedical Engineering
https://www.readbyqxmd.com/read/28432158/risk-score-for-cardiac-surgery-in-active-left-sided-infective-endocarditis
#15
Carmen Olmos, Isidre Vilacosta, Gilbert Habib, Luis Maroto, Cristina Fernández, Javier López, Cristina Sarriá, Erwan Salaun, Salvatore Di Stefano, Manuel Carnero, Sandrine Hubert, Carlos Ferrera, Gabriela Tirado, Afonso Freitas-Ferraz, Carmen Sáez, Javier Cobiella, Juan Bustamante-Munguira, Cristina Sánchez-Enrique, Pablo Elpidio García-Granja, Cecile Lavoute, Benjamin Obadia, David Vivas, Ángela Gutiérrez, José Alberto San Román
OBJECTIVE: To develop and validate a calculator to predict the risk of in-hospital mortality in patients with active infective endocarditis (IE) undergoing cardiac surgery. METHODS: Thousand two hundred and ninety-nine consecutive patients with IE were prospectively recruited (1996-2014) and retrospectively analysed. Left-sided patients who underwent cardiac surgery (n=671) form our study population and were randomised into development (n=424) and validation (n=247) samples...
April 21, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/28424627/blood-pressure-increase-during-oxygen-supplementation-in-chronic-kidney-disease-patients-is-mediated-by-vasoconstriction-independent-of-baroreflex-function
#16
René van der Bel, Müşerref Çalişkan, Robert A van Hulst, Johannes J van Lieshout, Erik S G Stroes, C T Paul Krediet
Renal hypoxia is thought to be an important pathophysiological factor in the progression of chronic kidney disease (CKD) and the associated hypertension. In a previous study among CKD patients, supplementation with 100% oxygen reduced sympathetic nerve activity (SNA) and lowered blood pressure (BP). We aimed to assess the underlying haemodynamic modulation and hypothesized a decreased systemic vascular resistance (SVR). To that end, 19 CKD patients were studied during 15-min intervals of increasing partial oxygen pressure (ppO2) from room air (0...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28374067/erratum-to-characterisation-of-glomerular-haemodynamic-responses-to-sglt2-inhibition-in-patients-with-type-1-diabetes-and-renal-hyperfiltration
#17
Marko Škrtić, Gary K Yang, Bruce A Perkins, Nima Soleymanlou, Yuliya Lytvyn, Maximilian von Eynatten, Hans J Woerle, Odd Erik Johansen, Uli C Broedl, Thomas Hach, Melvin Silverman, David Z I Cherney
No abstract text is available yet for this article.
April 3, 2017: Diabetologia
https://www.readbyqxmd.com/read/28373014/the-combyn%C3%A2-ecg-adding-haemodynamic-and-fluid-leads-for-the-ecg-part-ii-prediction-of-total-body-water-tbw-extracellular-fluid-ecf-ecf-overload-fat-mass-fm-and-dry-appendicular-muscle-mass-appmm
#18
Falko Skrabal, Georg P Pichler, Mathias Penatzer, Johannes Steinbichl, Anna-Katharina Hanserl, Alfred Leis, Herbert Loibner
Simultaneous with a 12 channel ECG, body composition was analysed by segmental multi-frequency impedance analysis in 101 healthy subjects and in 118 patients with chronic heart failure (CHF, n= 40), chronic renal failure with haemodialysis (HD, n= 20), and miscellaneous internal diseases (n= 58). Whole body DXA and sodium bromide dilution were used as reference methods for total body water (TBW), extracellular fluid (ECF), appendicular muscle mass (AppMM) and fat mass (FM). Empirical prediction equations were developed in a randomized evaluation sample and then evaluated in unknowns...
March 31, 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/28371908/acute-right-ventricular-resynchronization-improves-haemodynamics-in-children-after-surgical-repair-of-tetralogy-of-fallot
#19
Pavel Vojtovic, Filip Kucera, Peter Kubuš, Roman Gebauer, Tomáš Matejka, Tomáš Tláskal, Miroslav Ložek, Jan Kovanda, Jan Janoušek
Aims: Right bundle branch block is associated with right ventricular (RV) electromechanical dyssynchrony, which may contribute to acute haemodynamic impairment after repair of tetralogy of Fallot (ToF). We sought to evaluate the effects of RV resynchronization on haemodynamics and tissue oxygenation during the first 24 h after surgery. Methods and results: Arterial pressures, cardiac output, and tissue oxygenation were measured in 28 consecutive patients (median age 10...
March 23, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28371221/prediction-of-right-ventricular-failure-after-ventricular-assist-device-implant-systematic-review-and-meta-analysis-of-observational-studies
#20
REVIEW
Diego Bellavia, Attilio Iacovoni, Cesare Scardulla, Lorenzo Moja, Michele Pilato, Sudhir S Kushwaha, Michele Senni, Francesco Clemenza, Valentina Agnese, Calogero Falletta, Giuseppe Romano, Joseph Maalouf, Michael Dandel
Right ventricular failure (RVF) after left ventricular assist device (LVAD) implantation is associated with increased morbidity and mortality, but the identification of LVAD candidates at risk for RVF remains challenging. We undertook a systematic review and meta-analysis of observational studies of risk factors associated with RVF after LVAD implant. Thirty-six studies published between 1 January 1995 and 30 April 2015, comprising 995 RVF patients out of a pooled final population of 4428 patients, were identified...
March 31, 2017: European Journal of Heart Failure
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