keyword
MENU ▼
Read by QxMD icon Read
search

Pulmonary blood flow

keyword
https://www.readbyqxmd.com/read/29217489/fixed-volume-particle-trace-emission-for-the-analysis-of-left-atrial-blood-flow-using-4d-flow-mri
#1
Stephen Gaeta, Petter Dyverfeldt, Jonatan Eriksson, Carl-Johan Carlhäll, Tino Ebbers, Ann F Bolger
4D Flow MRI has been used to quantify normal and deranged left ventricular blood flow characteristics on the basis of functionally distinct flow components. However, the application of this technique to the atria is challenging due to the presence of continuous inflow. This continuous inflow necessitates plane-based emission of particle traces from the inlet veins, leading to particles that represents different amounts of blood, and related quantification errors. The purpose of this study was to develop a novel fixed-volume approach for particle tracing and employ this method to develop quantitative analysis of 4D blood flow characteristics in the left atrium...
December 4, 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/29211841/perioperative-benefit-and-outcome-of-thoracic-epidural-in-esophageal-surgery-a-clinical-review
#2
P Feltracco, A Bortolato, S Barbieri, E Michieletto, E Serra, A Ruol, S Merigliano, C Ori
Surgery for esophageal cancer is a highly stressful and painful procedure, and a significant amount of analgesics may be required to eliminate perioperative pain and blunt the stress response to surgery. Proper management of postoperative pain has invariably been shown to reduce the incidence of postoperative complications and accelerate recovery. Neuraxial analgesic techniques after major thoracic and upper abdominal surgery have long been established to reduce respiratory, cardiovascular, metabolic, inflammatory, and neurohormonal complications...
December 2, 2017: Diseases of the Esophagus: Official Journal of the International Society for Diseases of the Esophagus
https://www.readbyqxmd.com/read/29210771/effect-of-inhaled-nitric-oxide-on-hemodynamics-in-lambs-with-1%C3%A2-ventricle-circulation
#3
Hitoshi Kanamitsu, Yasuhiro Fujii, Luca Centola, Katsushi Kinouchi, Liqun Zhu, Robert K Riemer, Olaf Reinhartz
Inhaled nitric oxide (NO) is widely used to treat postoperative pulmonary hypertension in congenital heart disease. It is believed that NO increases cardiac output (CO) by decreasing pulmonary vascular resistance (PVR), leading to increased left ventricular preload. However, the effect of NO on CO in patients with 1½ ventricle circulation remains unclear. To evaluate this, a superior cavopulmonary (SCP) shunt was constructed in 10 juvenile sheep. A PTFE graft was inserted between the superior vena cava (SVC) and the main pulmonary artery (PA)...
November 27, 2017: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/29209035/disturbed-blood-flow-worsens-endothelial-dysfunction-in-moderate-severe-chronic-obstructive-pulmonary-disease
#4
Otto F Barak, Suzana Mladinov, Ryan L Hoiland, Joshua C Tremblay, Stephen R Thom, Ming Yang, Tanja Mijacika, Zeljko Dujic
The aims of this study were: (1) to test whether oscillatory shear stress further exacerbates endothelial dysfunction in patients with moderate-severe COPD, and (2) to test whether low flow oxygen administration improves endothelial function and is protective against oscillatory shear stress-induced endothelial dysfunction in patients with moderate-severe COPD. In 17 patients and 10 age-matched non-smoking control subjects we examined brachial artery flow-mediated dilation (FMD) and circulating microparticles before and after 20 minutes of experimentally-induced oscillatory shear stress...
December 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29208756/neurally-adjusted-ventilatory-assist-after-pediatric-cardiac-surgery-clinical-experience-and-impact-on-ventilation-pressures
#5
Benjamin Crulli, Mariam Khebir, Baruch Toledano, Suzanne Vobecky, Nancy Poirier, Guillaume Emeriaud
INTRODUCTION: After pediatric cardiac surgery, ventilation with high airway pressures can be detrimental to right ventricular function and pulmonary blood flow. Neurally adjusted ventilatory assist (NAVA) improves patient-ventilator interactions, helping maintain spontaneous ventilation. This study reports our experience with the use of NAVA in children after a cardiac surgery. We hypothesize that using NAVA in this population is feasible and allows for lower ventilation pressures. METHODS: We retrospectively studied all children ventilated with NAVA (invasively or noninvasively) after undergoing cardiac surgery between January 2013 and May 2015 in our pediatric intensive care unit...
December 5, 2017: Respiratory Care
https://www.readbyqxmd.com/read/29208663/haemodynamic-effects-of-umbilical-cord-milking-in-premature-sheep-during-the-neonatal-transition
#6
Douglas A Blank, Graeme R Polglase, Martin Kluckow, Andrew William Gill, Kelly J Crossley, Alison Moxham, Karyn Rodgers, Valerie Zahra, Ishmael Inocencio, Fiona Stenning, Domeic A LaRosa, Peter G Davis, Stuart B Hooper
OBJECTIVE: Umbilical cord milking (UCM) at birth may benefit preterm infants, but the physiological effects of UCM are unknown. We compared the physiological effects of two UCM strategies with immediate umbilical cord clamping (UCC) and physiological-based cord clamping (PBCC) in preterm lambs. METHODS: At 126 days' gestational age, fetal lambs were exteriorised, intubated and instrumented to measure umbilical, pulmonary and cerebral blood flows and arterial pressures...
December 5, 2017: Archives of Disease in Childhood. Fetal and Neonatal Edition
https://www.readbyqxmd.com/read/29202543/-experts-consensus-on-the-management-of-the-right-heart-function-in-critically-ill-patients
#7
X T Wang, D W Liu, H M Zhang, Y Long, X D Guan, H B Qiu, K J Yu, J Yan, H Zhao, Y Q Tang, X Ding, X C Ma, W Du, Y Kang, B Tang, Y H Ai, H W He, D C Chen, H Chen, W Z Chai, X Zhou, N Cui, H Wang, X Rui, Z J Hu, J G Li, Y Xu, Y Yang, B Ouyan, H Y Lin, Y M Li, X Y Wan, R L Yang, Y Z Qin, Y G Chao, Z Y Xie, R H Sun, Z Y He, D F Wang, Q Q Huang, D P Jiang, X Y Cao, R G Yu, X Wang, X K Chen, J F Wu, L N Zhang, M G Yin, L X Liu, S W Li, Z J Chen, Z Luo
To establish the experts consensus on the right heart function management in critically ill patients. The panel of consensus was composed of 30 experts in critical care medicine who are all members of Critical Hemodynamic Therapy Collaboration Group (CHTC Group). Each statement was assessed based on the GRADE (Grading of Recommendations Assessment, Development, and Evaluation) principle. Then the Delphi method was adopted by 52 experts to reassess all the statements. (1) Right heart function is prone to be affected in critically illness, which will result in a auto-exaggerated vicious cycle...
December 1, 2017: Zhonghua Nei Ke za Zhi [Chinese Journal of Internal Medicine]
https://www.readbyqxmd.com/read/29199443/successful-prediction-of-a-left-nonrecurrent-laryngeal-nerve-in-a-patient-with-right-sided-aorta-and-aberrant-left-subclavian-artery
#8
Xiaoyang Hua, Henry Diggelmann, Vishram Jalukar, Joseph W Turek, Nitin A Pagedar
BACKGROUND: Left nonrecurrent laryngeal nerve (LNRLN) is an extremely rare anatomic variant. The development of such anatomic variation requires the regression of both the fourth (aortic arch) and sixth (ductus arteriosus, DA) arches on the left side. Preoperative prediction of this variant is difficult but might reduce risk of nerve injury. METHODS: A 34-year-old female was indicated for thyroidectomy for a 2.4 cm follicular neoplasm and Graves' disease. Due to a positive medical history of 22q11...
December 1, 2017: Annals of Otology, Rhinology, and Laryngology
https://www.readbyqxmd.com/read/29197407/low-tidal-volume-mechanical-ventilation-against-no-ventilation-during-cardiopulmonary-bypass-heart-surgery-mecano-study-protocol-for-a-randomized-controlled-trial
#9
Lee S Nguyen, Messaouda Merzoug, Philippe Estagnasie, Alain Brusset, Jean-Dominique Law Koune, Stephane Aubert, Thierry Waldmann, Jean-Michel Grinda, Hadrien Gibert, Pierre Squara
BACKGROUND: Postoperative pulmonary complications are a leading cause of morbidity and mortality after cardiac surgery. There are no recommendations on mechanical ventilation associated with cardiopulmonary bypass (CPB) during surgery and anesthesiologists perform either no ventilation (noV) at all during CPB or maintain low tidal volume (LTV) ventilation. Indirect evidence points towards better pulmonary outcomes when LTV is performed but no large-scale prospective trial has yet been published in cardiac surgery...
December 2, 2017: Trials
https://www.readbyqxmd.com/read/29197078/cardiopulmonary-anomalies-in-incontinentia-pigmenti-patients
#10
Giuliana Onnis, Andrea Diociaiuti, Paola Zangari, Patrizia D'Argenio, Caterina Cancrini, Lorenzo Iughetti, May El Hachem
BACKGROUND: Incontinentia pigmenti (IP) is a rare inherited genodermatosis that usually involves the skin, and also teeth, oral cavity, central nervous system, eyes, blood with eosinophilia, and rarely skeletal system, breast, heart, and lungs. Skin lesions usually appear early, at birth or within the first 2 weeks of life, with four different phases tending to follow Blaschko lines that may overlap. CASE REPORT: We report a rare case of a neonate with transient reversible pulmonary hypertension that presented at day 9 of life...
December 2, 2017: International Journal of Dermatology
https://www.readbyqxmd.com/read/29196588/understanding-stage-ii-bidirectional-cavopulmonary-shunts
#11
Cecilia St George-Hyslop, Jennifer Thomas, Linda G Fazari
Despite improvements in surgical technique and medical management, single-ventricle lesions remain one of the most challenging congenital heart anomalies to treat, and mortality rates are high. Most infants who have single-ventricle palliation undergo a sequence of surgeries to optimize pulmonary and systemic blood flow. The first surgery to separate pulmonary and systemic blood flow is the bidirectional cavopulmonary shunt. This article describes single-ventricle lesions and gives a basic overview of outcomes and strategies to improve interstage mortality...
December 2017: Critical Care Nurse
https://www.readbyqxmd.com/read/29194961/computational-simulation-of-postoperative-pulmonary-flow-distribution-in-alagille-patients-with-peripheral-pulmonary-artery-stenosis
#12
Weiguang Yang, Frank L Hanley, Frandics P Chan, Alison L Marsden, Irene E Vignon-Clementel, Jeffrey A Feinstein
BACKGROUND: Up to 90% of individuals with Alagille syndrome have congenital heart diseases. Peripheral pulmonary artery stenosis (PPS), resulting in right ventricular hypertension and pulmonary flow disparity, is one of the most common abnormalities, yet the hemodynamic effects are ill-defined, and optimal patient management and treatment strategies are not well established. The purpose of this pilot study is to use recently refined computational simulation in the setting of multiple surgical strategies, to examine the influence of pulmonary artery reconstruction on hemodynamics in this population...
December 1, 2017: Congenital Heart Disease
https://www.readbyqxmd.com/read/29193160/multicenter-experience-with-mechanical-circulatory-support-using-a-new-diagonal-pump-in-233-children
#13
Brigitte Stiller, Robert Jan Houmes, André Rüffer, Matthias Kumpf, Andreas Müller, Florian Kipfmüller, Harald Köditz, Susanne Herber Jonat, Claudia Schmoor, Christoph Benk, Dick Tibboel, Thilo Fleck
Technological innovations in pediatric extracorporeal life support circuits can reduce system-related complications and may improve patients' outcome. The Deltastream DP3 (Medos Medizintechnik AG, Stolberg, Germany) is a novel rotational pump with a diagonally streamed impeller that can be used over a broad range of flows. We collected patient data from seven pediatric centers to conduct a retrospective cohort study. We examined 233 patients whose median age was 1.9 (0-201) months. The DP3 system was used for cardiopulmonary support as veno-arterial extracorporeal membrane oxygenation (ECMO) in 162 patients...
November 29, 2017: Artificial Organs
https://www.readbyqxmd.com/read/29191812/physiologically-based-cord-clamping-stabilises-cardiac-output-and-reduces-cerebrovascular-injury-in-asphyxiated-near-term-lambs
#14
Graeme R Polglase, Douglas A Blank, Samantha K Barton, Suzanne L Miller, Vanesa Stojanovska, Martin Kluckow, Andrew W Gill, Domenic LaRosa, Arjan B Te Pas, Stuart B Hooper
BACKGROUND: Physiologically based cord clamping (PBCC) has advantages over immediate cord clamping (ICC) during preterm delivery, but its efficacy in asphyxiated infants is not known. We investigated the physiology of PBCC following perinatal asphyxia in near-term lambs. METHODS: Near-term sheep fetuses (139±2 (SD) days' gestation) were instrumented to measure umbilical, carotid, pulmonary and femoral arterial flows and pressures. Systemic and cerebral oxygenation was recorded using pulse oximetry and near-infrared spectroscopy, respectively...
November 30, 2017: Archives of Disease in Childhood. Fetal and Neonatal Edition
https://www.readbyqxmd.com/read/29190641/intracardiac-anatomical-relationships-and-potential-for-streaming-in-double-inlet-left-ventricles
#15
Sophie L Meyer, Monique R Jongbloed, Siew Y Ho, Margot M Bartelings, Karen P McCarthy, Hideki Uemura, Tjark Ebels
The aim of this study was to gain better understanding of the variable anatomical features of double inlet left ventricle hearts without cavopulmonary connection that would potentially facilitate favorable streaming. Thirty-nine post-mortem specimens of double inlet left ventricle without cavopulmonary connection were investigated. The focus was on anatomical characteristics that could influence the flow and separation of deoxygenated and oxygenated blood in the ventricles. Elements of interest were the ventriculoarterial connection, the spatial relationship of the ventricles, the position and size of the great arteries, the ventricular septal defect, the presence of relative outflow tract stenosis and the relationship of the inflow and outflow tracts...
2017: PloS One
https://www.readbyqxmd.com/read/29183331/four-successful-pregnancies-in-a-patient-with-fontan-palliation-and-congenital-heart-disease-a-case-report
#16
Khalid S Al Najashi, Syed Mehdi, Shazia Mohsin, Merna Atiyah, Hafez A Abdullah, Jassim Abdulhameed, Ahmed M Al Zahrani
BACKGROUND: Fontan is a palliative procedure in patients with single ventricle. Single ventricle supports systemic cardiac output and pulmonary blood flow is passively directed to the right pulmonary artery. Women with Fontan palliation are reported to have increased maternal risk during pregnancy. There are few reports of successful pregnancies in such cases. However data on these pregnancies is lacking, we consider this to be the first reported from kingdom of Saudi Arabia. CASE PRESENTATION: We present a 35-year-old woman from the Kingdom of Saudi Arabia who had Fontan surgery and who had four successful pregnancies and multiple miscarriages...
November 28, 2017: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/29183299/tobacco-smoking-induced-gpr15-expressing-t-cells-in-blood-do-not-indicate-pulmonary-damage
#17
Mario Bauer, Beate Fink, Hans-Jürgen Seyfarth, Hubert Wirtz, Armin Frille
BACKGROUND: Recently, it was shown that chronic tobacco smoking evokes specific cellular and molecular changes in white blood cells by an excess of G protein-coupled receptor 15 (GPR15)-expressing T cells as well as a hypomethylation at DNA CpG site cg05575921 in granulocytes. In the present study, we aimed to clarify the general usefulness of these two biomarkers as putative signs of non-cancerous change in homeostasis of the lungs. METHODS: In a clinical cohort consisting of 42 patients with chronic obstructive pulmonary disease (COPD), interstitial lung disease (ILD) and pneumonia and a control cohort of 123 volunteers, the content of GPR15-expressing blood cells as well as the degree of methylation at cg05575921 were analysed by flow-cytometry and pyrosequencing, respectively...
November 28, 2017: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/29181862/perforation-and-right-ventricular-outflow-tract-stenting-alternative-palliation-for-infants-with-pulmonary-atresia-ventricular-septal-defect
#18
David Aurigemma, John W Moore, Gabrielle Vaughn, Nasser Moiduddin, Howaida G El-Said
BACKGROUND: Right ventricular outflow tract (RVOT) stents have been used as palliation in patients with severe tetralogy of Fallot (TOF). Radiofrequency perforation of the RVOT has also been described in patients with pulmonary atresia (PA)/ventricular septal defect (VSD). However, RVOT stenting in conjunction with radiofrequency perforation as a means for establishing reliable pulmonary blood flow in patients with PA/VSD has not previously been reported. OBJECTIVES: Our aim is to report our experience with using perforation of plate-like pulmonary valve atresia combined with stenting of RVOT as an alternative and equally efficacious intervention for infants with PA/VSD, as compared to a surgical pulmonary artery shunt (SPS)...
November 27, 2017: Congenital Heart Disease
https://www.readbyqxmd.com/read/29181841/epidural-therapy-for-the-treatment-of-severe-pre-eclampsia-in-non-labouring-women
#19
REVIEW
Amita Ray, Sujoy Ray
BACKGROUND: Pre-eclampsia is a pregnancy-specific multi-organ disorder, which is characterised by hypertension and multisystem organ involvement and which has significant maternal and fetal morbidity and mortality. Failure of the placental vascular remodelling and reduced uteroplacental flow form the etiopathological basis of pre-eclampsia. There are several established therapies for pre-eclampsia including antihypertensives and anticonvulsants. Most of these therapies aim at controlling the blood pressure or preventing complications of elevated blood pressure, or both...
November 28, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29180322/-peripheral-blood-t-cell-tnf-%C3%AE-and-ifn-%C3%AE-production-stimulated-by-low-molecular-peptide-of-mycobacterium-tuberculosis-heat-resistant-antigen-for-differential-diagnosis-between-pulmonary-tuberculosis-and-latent-tuberculosis-infection
#20
Jie Tang, Ce Chen, Cheng Zha, Jian-Rong Chang, Qiang Fang, Zhao-Hua Wang, Bai-Qing Li
OBJECTIVE: To investigate the effects of low molecular peptide of Mycobacterium tuberculosis heat-resistant antigen (Mtb-HAg-10k) on the production of tumor necrosis factor-α (TNF-α) and interferon-γ (IFN-γ) in peripheral blood T cells and test the feasibility of differential diagnosis between pulmonary tuberculosis (PTB) and latent tuberculosis infection (LTBI) by assessing the number of Mtb-HAg-10k-stimulated IFN-γ-producing T cells. METHODS: Peripheral blood mononuclear cells (PBMCs) were separated from the peripheral blood of 10 healthy adults, 6 individuals with LTBI and 13 patients with PTB...
November 20, 2017: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
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"