keyword
MENU ▼
Read by QxMD icon Read
search

"Cardiac output"

keyword
https://www.readbyqxmd.com/read/29786115/effects-of-cardiac-output-on-the-onset-of-rocuronium-induced-neuromuscular-block-in-elderly-patients
#1
Naoki Shiraishi, Mayu Aono, Yasuhito Kameyama, Mai Yamamoto, Osamu Kitajima, Takahiro Suzuki
PURPOSE: The aim of this study was to elucidate the relationship between the onset of rocuronium-induced neuromuscular block and arterial pressure-based cardiac output (CO) in elderly patients. METHODS: Forty elderly patients aged 65-83 years were enrolled in this study. After induction of anesthesia, contractions of the adductor pollicis muscle to ulnar nerve train-of-four stimulation were acceleromyographically evaluated and 1 mg/kg rocuronium was administered following CO measurement...
May 21, 2018: Journal of Anesthesia
https://www.readbyqxmd.com/read/29785788/effects-of-levosimendan-on-mortality-in-patients-undergoing-cardiac-surgery-a-systematic-review-and-meta-analysis
#2
Peili Chen, Xiaoqiang Wu, Zhiwei Wang, Zhenya Li, Xiangyong Tian, Junpeng Wang, Tianzhong Yan
PURPOSE: We sought to determine the impact of levosimendan on mortality following cardiac surgery based on large-scale randomized controlled trials (RCTs). METHODS: We searched PubMed, Web of Science, Cochrane databases, and ClinicalTrials.gov for RCTs published up to December 2017, on levosimendan for patients undergoing cardiac surgery. RESULTS: A total of 25 RCTs enrolling 2960 patients met the inclusion criteria; data from 15 placebo-controlled randomized trials were included for meta-analysis...
May 21, 2018: Journal of Cardiac Surgery
https://www.readbyqxmd.com/read/29785232/effects-of-fasudil-on-patients-with-pulmonary-hypertension-associated-with-left-ventricular-heart-failure-with-preserved-ejection-fraction-a-prospective-intervention-study
#3
Xiang Zhang, Xueming Zhang, Saihua Wang, Jun Luo, Zhihong Zhao, Changzhu Zheng, Jieyan Shen
Background: Pulmonary hypertension due to left ventricular heart failure with preserved ejection fraction (PH-HFpEF) is an increasingly medical problem. The aim of the study was to evaluate the clinical efficacy of fasudil on PH-HFpEF elderly patients and to figure out the subtype of PH-HFpEF which may be the therapeutic object of fasudil. Method: 58 PH-HFpEF elderly patients were enrolled. Patients were diagnosed with passive pulmonary hypertension (PPH) or reactive pulmonary hypertension (RPH) by right heart catheterization and all receiving Rho kinase inhibitor fasudil for 2 weeks...
2018: Canadian Respiratory Journal: Journal of the Canadian Thoracic Society
https://www.readbyqxmd.com/read/29784489/syncope-electrocardiographic-and-clinical-correlation
#4
REVIEW
Andrea Ungar, Martina Rafanelli
Syncope is a frequent condition, owing to a transient global cerebral hypoperfusion, that may depend on a reduction of vascular total peripheral resistance and/or cardiac output. Cardiac syncope doubled the risk of death from any cause and increased the risk of nonfatal and fatal cardiovascular events. Arrhythmias are the most common cardiac causes of syncope. Both bradyarrhythmias and tachyarrhythmias may predispose to syncope. The first line evaluation relies on clinical history, physical examination, active standing test, 12-lead echocardiogram...
June 2018: Cardiac Electrophysiology Clinics
https://www.readbyqxmd.com/read/29784125/catheter-directed-thrombolysis-for-pulmonary-embolism-the-state-of-practice
#5
Xi Xue, Akhilesh K Sista
Acute pulmonary embolism (PE) is a major public health problem. It is the third most common cause of death in hospitalized patients. In the United States, there are up to 600,000 cases diagnosed per year with 100,000-180,000 acute PE-related deaths. Common risk factors include underlying genetic conditions, acquired conditions, and acquired hypercoagulable states. Acute PE increases the pulmonary vascular resistance and the load on the right ventricle (RV). Increased RV loading causes compensatory RV dilation, impaired contractility, tachycardia, and sympathetic activation...
June 2018: Techniques in Vascular and Interventional Radiology
https://www.readbyqxmd.com/read/29784052/the-effect-of-heart-failure-and-left-ventricular-assist-device-treatment-on-right-ventricular-mechanics-a-computational-study
#6
Jun I K Park, Aulia Khamas Heikhmakhtiar, Chang Hyun Kim, Yoo Seok Kim, Seong Wook Choi, Kwang Soup Song, Ki Moo Lim
BACKGROUND AND AIMS: Although it is important to analyze the hemodynamic factors related to the right ventricle (RV) after left ventricular assist device (LVAD) implantation, previous studies have focused only on the alteration of the ventricular shape and lack quantitative analysis of the various hemodynamic parameters. Therefore, we quantitatively analyzed various hemodynamic parameters related to the RV under normal, heart failure (HF), and HF incorporated with continuous flow LVAD therapy by using a computational model...
May 22, 2018: Biomedical Engineering Online
https://www.readbyqxmd.com/read/29783950/effects-of-the-cardiac-myosin-activator-omecamtiv-mecarbil-on-severe-chronic-aortic-regurgitation-in-wistar-rats
#7
Bachar El-Oumeiri, Kathleen Mc Entee, Filippo Annoni, Antoine Herpain, Frédéric Vanden Eynden, Pascal Jespers, Guido Van Nooten, Philippe van de Borne
BACKGROUND: Aortic regurgitation (AR) is a valvular disease that can lead to systolic heart failure. Treatment options besides cardiac surgery are limited and consequently severe AR is associated with higher mortality and morbidity when not operated. In this investigation, we examined the effects of a novel cardiac myosin activator, Omecamtiv-mecarbil (OM), in rats with chronic severe AR. METHODS: AR was created by retrograde puncture of the aortic valve leaflets in 20 adults Wistar rats...
May 21, 2018: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/29782286/-ngal-as-a-marker-for-some-extrarenal-complications-in-acute-coronary-syndrome
#8
M A Shalenkova, Z D Mikhailova, P F Klimkin
AIM: To study the role of neutrophil gelatinase-associated lipocalin (NGAL) as a marker for extrarenal complications in patients with acute coronary syndrome (ACS). MATERIALS AND METHODS: For 110 patients with ACS on days 1-3 of hospitalization, concentrations of NGAL, serum (s-NGAL) and urinary (u-NGAL) NGAL, and N-terminal fragment of pro-B natriuretic peptide (NT-proBNP) were measured, and transthoracic echocardiography was performed. Incidence of cardiovascular complications was determined during the stay in the hospital; hemodynamic parameters (systolic and diastolic blood pressure, heart rate) were measured on admission...
2018: Kardiologiia
https://www.readbyqxmd.com/read/29782256/-radiofrequency-pulmonary-artery-ablation-for-treatment-of-residual-pulmonary-hypertension-after-pulmonary-endarterectomy
#9
A M CHernyavskiy, A G Edemskiy, N V Novikova, A B Romanov, S N Artemenko, B A Rudenko, A R Tarkova
OBJECTIVE: to assess the safety and efficiency of radiofrequency pulmonary artery ablation for treatment of residual pulmonary hypertension after pulmonary endarterectomy. MATERIAL AND METHODS: Radiofrequency pulmonary artery denervation (PADN) was performed in 16 patients (10 men, mean age 39 years [26; 51]). Indication for PADN was mean pulmonary artery pressure (PAP) >25 mm Hg with absence of proximal pulmonary artery lesion according to computer tomography...
April 2018: Kardiologiia
https://www.readbyqxmd.com/read/29780728/intimal-re-layering-technique-for-type-a-acute-aortic-dissection-reconstructing-the-intimal-layer-continuity-to-induce-remodeling-of-the-false-channel
#10
Eugenio Neri, Enrico Tucci, Giulio Tommasino, Giulia Guaccio, Carmelo Ricci, Pierleone Lucatelli, Marco Cini, Roberto Ceresa, Antonio Benvenuti, Luigi Muzzi
Background: Residual false channel is common after repair of type A acute aortic dissection (TAAAD). Starting from our recent series of TAAAD patients we carried out a retrospective analysis, regarding the failure of primary exclusion at the time of the initial operation. We classified the location of the principal entry tears perfusing the residual false channel. The proposed technique represents our attempt to correct the mechanism of false channel perfusion during primary repair. We describe a new technique designed to address some limitations of standard hemiarch aortic replacement...
2018: Journal of Visualized Surgery
https://www.readbyqxmd.com/read/29779797/the-function-of-the-heart-is-historically-contingent
#11
Nicholas Binney
Some philosophers of medicine argue that there are objective facts about the biological function of organs, and that these facts are used to objectively define diseases. The function of the heart is taken to be particularly obvious and well established. Contrary to this, I argue that the function of the heart is not fixed by nature, but rather that it is historically contingent. The disease heart failure results from the dysfunction of the heart. In opposition to the common-sense intuitions of philosophers, medics do not define heart failure simply as a reduced cardiac output, and up to half of patients with heart failure have a normal cardiac output...
May 17, 2018: Studies in History and Philosophy of Biological and Biomedical Sciences
https://www.readbyqxmd.com/read/29778242/cardiovascular-responses-to-isometric-handgrip-exercise-in-young-patients-with-recurrent-vasovagal-syncope
#12
Juan Idiaquez, Juan Francisco Idiaquez, Rodrigo Iturriaga
OBJECTIVE: Arterial blood pressure (BP) increased in healthy humans in response to isometric handgrip (IHG), but the pattern of the relative contribution of cardiac output (CO) and total peripheral resistance (TPR) changes to the pressor response is different among individuals. We investigated weather patients with recurrent vasovagal syncope (VVS) have a similar pattern of individual CO, TPR and pressor responses to IHG, as healthy subjects. METHODS: 32 patients (27...
July 2018: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/29773582/activation-of-large-conductance-calcium-activated-k-channels-by-nitric-oxide-mediates-apelin-induced-relaxation-of-coronary-arteries
#13
Amreen Mughal, Chengwen Sun, Stephen T O'Rourke
Apelin increases coronary blood flow, cardiac contractility and cardiac output. Based on these favorable hemodynamic effects, apelin and apelin-like analogs are being developed for treating heart failure and related disorders; however, the molecular mechanisms underlying apelin-induced coronary vasodilation are unknown. This study aimed to elucidate the signaling pathways by which apelin causes smooth muscle relaxation in coronary arteries. Receptors for apelin (APJ receptors) were expressed in coronary arteries, as determined by Western blot and PCR analyses...
May 17, 2018: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/29772936/the-effect-of-supine-positioning-on-maternal-hemodynamics-during-late-pregnancy
#14
Aimee Humphries, S Ali Mirjalili, Gregory P Tarr, John M D Thompson, Peter Stone
INTRODUCTION: Recent studies have demonstrated an association between maternal supine sleep position and an increased risk of late stillbirth. During late pregnancy the gravid uterus compresses the inferior vena cava when a woman lies in the supine position. The azygos system of veins is the dominant pathway of collateral venous return back to the heart in the event of acute obstruction of the inferior vena cava. It is suggested that this pathway provides adequate collateral venous circulation in the event of inferior vena caval compression in the supine position during late pregnancy...
May 17, 2018: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29772401/evaluation-ofserum-free-carnitine-acylcarnitine-levels-and-left-ventricular-systolic-functions-in-children-with-idiopathic-epilepsy-receiving-valproic-acid
#15
Ilknur Kulhas Celik, Haydar Ali Tasdemir, Hülya Ince, Halil Celik, Metin Sungur
OBJECTIVES: In the study, the effect of valproic acid on serum free/acylcarnitine levels and left ventricular systolic function in pediatric patients with idiopathic epilepsy receiving valproic acid was investigated. PATIENTS AND METHODS: Patients receiving valproic acid treatment for six months between January 2012 and December 2012 were evaluated. Blood samples were obtained from the participants twice (pretreatment and the sixth month of treatment) and serum-free and acylcarnitine levels (from C2 to C18:1-OH) were measured using tandem mass spectrometry...
May 14, 2018: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/29771607/mechanistic-insights-into-the-modulatory-role-of-the-mechanoreflex-on-central-hemodynamics-using-passive-leg-movement-in-humans
#16
Nicholas T Kruse, William E Hughes, Darren P Casey
The aim of this study was to examine the independent contributions of joint range of motion (ROM), muscle fascicle length (MFL) and joint angular velocity on mechanoreceptor mediated central cardiovascular dynamics using passive leg movement (PLM) in humans. Twelve healthy males (age: 23{plus minus}2 yrs, body mass index: 23.7 kg/m2 ) performed continuous PLM at various randomized joint angles ROM (0-50{degree sign} vs. 50-100{degree sign} vs. 0-100{degree sign}) and joint angular velocities ('fast': 200{degree sign}/s vs...
May 17, 2018: Journal of Applied Physiology
https://www.readbyqxmd.com/read/29769710/jdp2-overexpression-provokes-cardiac-dysfunction-in-mice
#17
Jacqueline Heger, Julia Bornbaum, Alona Würfel, Christian Hill, Nils Brockmann, Renáta Gáspár, János Pálóczi, Zoltán V Varga, Márta Sárközy, Péter Bencsik, Tamás Csont, Szilvia Török, Baktybek Kojonazarov, Ralph Theo Schermuly, Kerstin Böngler, Mariana Parahuleva, Peter Ferdinandy, Rainer Schulz, Gerhild Euler
The transcriptional regulator JDP2 (Jun dimerization protein 2) has been identified as a prognostic marker for patients to develop heart failure after myocardial infarction. We now performed in vivo studies on JDP2-overexpressing mice, to clarify the impact of JDP2 on heart failure progression. Therefore, during birth up to the age of 4 weeks cardiac-specific JDP2 overexpression was prevented by doxycycline feeding in transgenic mice. Then, JDP2 overexpression was started. Already after 1 week, cardiac function, determined by echocardiography, decreased which was also resembled on the cardiomyocyte level...
May 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29764898/clinical-presentation-and-outcome-in-a-contemporary-cohort-of-patients-with-acute-myocarditis-the-multicenter-lombardy-registry
#18
Enrico Ammirati, Manlio Cipriani, Claudio Moro, Claudia Raineri, Daniela Pini, Paola Sormani, Riccardo Mantovani, Marisa Varrenti, Patrizia Pedrotti, Cristina Conca, Antonio Mafrici, Aurelia Grosu, Daniele Briguglia, Silvia Guglielmetto, Giovanni Battista Perego, Stefania Colombo, Salvatore Ivan Caico, Cristina Giannattasio, Alberto Maestroni, Valentina Carubelli, Marco Metra, Carlo Lombardi, Jeness Campodonico, Piergiuseppe Agostoni, Giovanni Peretto, Laura Scelsi, Annalisa Turco, Giuseppe Di Tano, Carlo Campana, Armando Belloni, Fabrizio Morandi, Andrea Mortara, Antonio Cirò, Michele Senni, Antonello Gavazzi, Maria Frigerio, Fabrizio Oliva, Paolo G Camici
Background -There is controversy regarding outcome of patients with acute myocarditis (AM), and lack of data on how patients admitted with suspected AM are managed. We report characteristics, in-hospital management and long-term outcome of patients with AM based on a retrospective multi-center registry from 19 Italian hospitals. Methods -A total of 684 patients with suspected AM and recent onset of symptoms (<30 days) were screened between May 2001 and February 2017. Patients >70 years and those older than 50 years without coronary angiography were excluded...
May 15, 2018: Circulation
https://www.readbyqxmd.com/read/29764601/adolescent-habitual-caffeine-consumption-and-hemodynamic-reactivity-during-rest-psychosocial-stress-and-recovery
#19
Jack E James, Birna Baldursdottir, Kamilla R Johannsdottir, Heiddis B Valdimarsdottir, Inga Dora Sigfusdottir
OBJECTIVE: Most adolescents regularly consume caffeine. Whereas observational studies have suggested that coffee may be cardio-protective, pharmacological experimentation with adults shows that caffeine at dietary doses increases blood pressure, thereby implicating regular caffeine consumption as a potential source of harm for cardiovascular health. The present study was in response to the dearth of caffeine research among younger consumers. It was hypothesised that compared to the consumption of little or no caffeine, adolescents who habitually consume caffeine have overall higher blood pressure and increased vascular resistance...
July 2018: Journal of Psychosomatic Research
https://www.readbyqxmd.com/read/29764550/-predictive-value-of-central-venous-to-arterial-carbon-dioxide-partial-pressure-difference-for-fluid-responsiveness-in-septic-shock-patients-a-prospective-clinical-study
#20
Guangyun Liu, Huibin Huang, Hanyu Qin, Bin Du
OBJECTIVE: To evaluate the accuracy of central venous-to-arterial carbon dioxide partial pressure difference (Pcv-aCO2 ) before and after rapid rehydration test (fluid challenge) in predicting the fluid responsiveness in patients with septic shock. METHODS: A prospective observation was conducted. Forty septic shock patients admitted to medical intensive care unit (ICU) of Peking Union Medical College Hospital from October 2015 to June 2017 were enrolled. All of the patients received fluid challenge in the presence of invasive hemodynamic monitoring...
May 2018: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
keyword
keyword
7925
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"