keyword
MENU ▼
Read by QxMD icon Read
search

Hemodynamics

keyword
https://www.readbyqxmd.com/read/28107727/neural-correlates-of-subliminally-presented-visual-sexual-stimuli
#1
Martina Wernicke, Corinna Hofter, Kirsten Jordan, Peter Fromberger, Peter Dechent, Jürgen L Müller
In the context of forensic psychiatry, it is crucial that diagnoses of deviant sexual interests are resistant to manipulation. In a first attempt to promote the development of such tools, the current fMRI study focusses on the examination of hemodynamic responses to preferred, in contrast to non-preferred, sexual stimuli with and without explicit sexual features in 24 healthy heterosexual subjects. The subliminal stimulus presentation of sexual stimuli could be a new approach to reduce vulnerability to manipulation...
January 17, 2017: Consciousness and Cognition
https://www.readbyqxmd.com/read/28107373/dexmedetomidine-versus-midazolam-in-procedural-sedation-a-systematic-review-of-efficacy-and-safety
#2
Clemens R M Barends, Anthony Absalom, Baucke van Minnen, Arjan Vissink, Anita Visser
OBJECTIVES: To systematically review the literature comparing the efficacy and safety of dexmedetomidine and midazolam when used for procedural sedation. MATERIALS AND METHODS: We searched MEDLINE, EMBASE and COCHRANE for clinical trials comparing dexmedetomidine and midazolam for procedural sedation up to June 20, 2016. Inclusion criteria: clinical trial, human subjects, adult subjects (≥18 years), article written in English, German, French or Dutch, use of study medication for conscious sedation and at least one group receiving dexmedetomidine and one group receiving midazolam...
2017: PloS One
https://www.readbyqxmd.com/read/28107308/acute-right-heart-failure-after-hemorrhagic-shock-and-trauma-pneumonectomy-a-management-approach-a-blinded-randomized-controlled-animal-trial-using-inhaled-nitric-oxide
#3
Andrea L Lubitz, Lars O Sjoholm, Amy Goldberg, Abhijit Pathak, Thomas Santora, Thomas E Sharp, Markus Wallner, Remus M Berretta, Lauren A Poole, Jichuan Wu, Marla R Wolfson
BACKGROUND: Hemorrhagic shock and pneumonectomy causes an acute increase in pulmonary vascular resistance (PVR). The increase in PVR and right ventricular (RV) afterload leads to acute RV failure, thus reducing left ventricular (LV) preload and output. Inhaled nitric oxide (iNO) lowers PVR by relaxing pulmonary arterial smooth muscle without remarkable systemic vascular effects. We hypothesized that with hemorrhagic shock and pneumonectomy, iNO can be used to decrease PVR and mitigate right heart failure...
February 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28107273/influence-of-depth-of-hypnosis-on-pupillary-reactivity-to-a-standardized-tetanic-stimulus-in-patients-under-propofol-remifentanil-target-controlled-infusion-a-crossover-randomized-pilot-study
#4
Nada Sabourdin, Jean-Baptiste Peretout, Eliane Khalil, Marie-Laurence Guye, Nicolas Louvet, Isabelle Constant
BACKGROUND: Pupillometry allows the measurement of pupillary diameter variations in response to nociceptive stimuli. This technique has been used to monitor the balance between analgesia and nociception. Under general anesthesia, the amplitude of pupillary dilation is related to the amount of administered opioids. The objective of this study was to determine whether at a constant infusion rate of opioids, the pupillary response was influenced by depth of hypnosis assessed by the bispectral index (BIS)...
January 19, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28106356/accuracy-of-non-invasive-hemoglobin-monitoring-by-pulse-co-oximeter-during-liver-transplantation
#5
Gulay Erdogan Kayhan, Yusuf Z Colak, Mukadder Sanli, Muharrem Ucar, Huseyin I Toprak
BACKGROUND: Hemoglobin level monitoring is essential during liver transplantation (LT) due to substantial blood loss. We evaluated the accuracy of noninvasive and continuous hemoglobin monitoring (SpHb) obtained by a transcutaneous spectrophotometry-based technology (Masimo Corporation, Irvine, CA) compared with conventional laboratory Hb measurement (HbL) during LT. Additionally, we made subgroup analyses for distinct surgical phases that have special features and hemodynamic problems and thus may affect the accuracy of SpHb...
January 20, 2017: Minerva Anestesiologica
https://www.readbyqxmd.com/read/28106343/net-clinical-benefit-of-hospitalization-versus-outpatient-management-of-patients-with-acute-pulmonary-embolism
#6
P-M Roy, D J Corsi, M Carrier, A Theogene, C de Wit, C Dennie, G Le Gal, A Delluc, T Moumneh, M Rodger, P Wells, E Gandara
BACKGROUND: The decision to hospitalize or not patients with acute pulmonary embolism (PE) is controversial. Despite the advantages of close monitoring, hospitalization by itself may lead to in-hospital complications and potentially worsen the prognosis of PE patients. OBJECTIVES: To determine the net clinical benefit of hospitalization versus outpatient management of normotensive patients with acute pulmonary embolism (PE). METHODS: Retrospective cohort propensity score analysis (radius marching with replacement)...
January 20, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28105655/imperfect-de-convolution-may-introduce-spurious-psychophysiological-interactions-and-how-to-avoid-it
#7
Xin Di, Richard C Reynolds, Bharat B Biswal
Psychophysiological interaction (PPI) is a widely used regression-based method to study connectivity changes in different experimental conditions. A PPI effect is generated by point-by-point multiplication of a psychological variable (experimental design) and a physiological variable (time series of a seed region). If the psychological variable is non-centered with a constant component, the constant component will add a physiological variable to the PPI term. The physiological component would in theory be accounted for by the physiological main effect in the model...
January 20, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/28105598/clinical-pharmacokinetics-and-pharmacodynamics-of-dexmedetomidine
#8
REVIEW
Maud A S Weerink, Michel M R F Struys, Laura N Hannivoort, Clemens R M Barends, Anthony R Absalom, Pieter Colin
Dexmedetomidine is an α2-adrenoceptor agonist with sedative, anxiolytic, sympatholytic, and analgesic-sparing effects, and minimal depression of respiratory function. It is potent and highly selective for α2-receptors with an α2:α1 ratio of 1620:1. Hemodynamic effects, which include transient hypertension, bradycardia, and hypotension, result from the drug's peripheral vasoconstrictive and sympatholytic properties. Dexmedetomidine exerts its hypnotic action through activation of central pre- and postsynaptic α2-receptors in the locus coeruleus, thereby inducting a state of unconsciousness similar to natural sleep, with the unique aspect that patients remain easily rousable and cooperative...
January 19, 2017: Clinical Pharmacokinetics
https://www.readbyqxmd.com/read/28105540/echocardiographic-assessment-of-long-term-hemodynamic-characteristics-of-mechanical-mitral-valve-prostheses-with-different-mitral-valvular-diseases
#9
Xiliang Zhu, Qian Li, Hong Tang, Xijun Xiao
Mitral stenosis (MS) and mitral insufficiency (MI) have different pre-operative hemodynamic characteristics. However, it is unclear if there are differences in long-term echocardiographic characteristics of MS and MI patients after mechanical mitral valve replacement. This study is to compare long-term echocardiographic results of mechanical mitral valve prostheses between MS and MI patients. From January 2003 to January 2009, a total of 199 consecutive patients were recruited in this study. Patients were classified as group MS (n = 123) and MI (n = 76) according to the manifestation of mitral valvular disease...
January 19, 2017: Australasian Physical & Engineering Sciences in Medicine
https://www.readbyqxmd.com/read/28105123/effect-of-anti-vegf-drugs-combined-with-photodynamic-therapy-in-the-treatment-of-age-related-macular-degeneration
#10
Yi Dong, Guangming Wan, Panshi Yan, Yue Chen, Wenzhan Wang, Guanghua Peng
We analyzed the effects of anti-vascular endothelial growth factor (VEGF) drugs combined with photodynamic therapy (PDT) in the treatment of age-related macular degeneration (AMD). Ninety-six cases (192 eyes) of AMD were included in this study and randomly divided into the observation group and control group (n=48 cases per group). The control group was administered the treatment of Lucentis intravitreal injection alone and the observation group was administered Lucentis combined with PDT. The therapeutic effects were compared...
December 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28105111/effect-of-rocuronium-on-the-bispectral-index-under-anesthesia-and-tracheal-intubation
#11
Hui Yue, Jinyu Han, Ling Liu, Kaiyuan Wang, Jincheng Li
The aim of the present study was to investigate the effect of various doses of rocuronium on bispectral index (BIS) responses to propofol induction and tracheal intubation, as well as the role of the non-depolarization muscle relaxant rocuronium on the depth of sedation. A total of 72 patients (American Society of Anesthesiologists physical status I-II) were anaesthetized with propofol using a target-controlled infusion, and randomly divided into two sedation level groups (n=36). The patients were divided into 2 groups according to the BIS value: A normal sedation group (group 1), with a stable BIS value at 40-60, and a deep sedation group (group 2), with a BIS value <20 or with burst suppression...
December 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28104642/evaluation-of-encephaloduroarteriosynangiosis-efficacy-using-probabilistic-independent-component-analysis-applied-to-dynamic-susceptibility-contrast-perfusion-mri
#12
A N Laiwalla, F Kurth, K Leu, R Liou, J Pamplona, Y C Ooi, N Salamon, B M Ellingson, N R Gonzalez
BACKGROUND AND PURPOSE: Indirect cerebral revascularization has been successfully used for treatment in Moyamoya disease and symptomatic intracranial atherosclerosis. While angiographic neovascularization has been demonstrated after surgery, measurements of local tissue perfusion are scarce and may not reflect the reported successful clinical outcomes. We investigated probabilistic independent component analysis and conventional perfusion parameters from DSC-MR imaging to measure postsurgical changes in tissue perfusion...
January 19, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28104640/arterial-spin-labeling-to-discriminate-pediatric-cervicofacial-soft-tissue-vascular-anomalies
#13
G Boulouis, V Dangouloff-Ros, O Boccara, N Garabedian, V Soupre, A Picard, V Couloigner, N Boddaert, O Naggara, F Brunelle
BACKGROUND AND PURPOSE: Differentiating major subtypes of cervicofacial vascular lesions is crucial for appropriate management. The aim of our study was to evaluate the performance of an MR imaging arterial spin-labeling perfusion sequence in discriminating pediatric cervicofacial soft-tissue vascular anomalies. MATERIALS AND METHODS: We conducted a retrospective analysis of data from a prospectively maintained registry including pediatric patients at a tertiary pediatric center between January 2012 and January 2014...
January 19, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28104277/microcirculatory-monitoring-in-septic-patients-where-do-we-stand
#14
G Gruartmoner, J Mesquida, C Ince
Microcirculatory alterations play a pivotal role in sepsis-related morbidity and mortality. However, since the microcirculation has been a "black box", current hemodynamic management of septic patients is still guided by macrocirculatory parameters. In the last decades, the development of several technologies has shed some light on microcirculatory evaluation and monitoring, and the possibility of incorporating microcirculatory variables to clinical practice no longer seems to be beyond reach. The present review provides a brief summary of the current technologies for microcirculatory evaluation, and attempts to explore the potential role and benefits of their integration to the resuscitation process in critically ill septic patients...
January 16, 2017: Medicina Intensiva
https://www.readbyqxmd.com/read/28104211/balloon-post-dilation-following-implantation-of-a-self-expanding-transcatheter-aortic-valve%C3%A2-bioprosthesis
#15
J Kevin Harrison, G Chad Hughes, Michael J Reardon, Robert Stoler, Paul Grayburn, Robert Hebeler, David Liu, Yanping Chang, Jeffrey J Popma
OBJECTIVES: This study sought to explore the impact of balloon post-dilation (BPD) on outcomes in the CoreValve US Clinical Trials. BACKGROUND: BPD following transcatheter aortic valve replacement (TAVR) has been used in selected cases to optimize hemodynamic results. METHODS: Procedural details of 3,532 patients were examined to determine whether BPD was performed after self-expanding TAVR. "Best practice" guidelines recommended BPD for treatment of suboptimal intraprocedural valve function, primarily manifested by moderate or severe residual aortic regurgitation (AR)...
January 23, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28103372/the-effect-of-epidural-levobupivacaine-and-fentanyl-on-stress-response-and-pain-management-in-patients-undergoing-percutaneous-nephrolithotomy
#16
A Ahiskalioglu, O Ahiskalioglu, A Dostbil, C Abdullah, A Megnet, M Celik, I Ilker, K Husnu
Objective: The perioperative stress response of patients who were scheduled to have percutaneous nephrolithotomy under epidural anaesthesia with opioids and local anaesthetics has not been investigated in detail yet. Our hypothesis is that the stress response following percutaneous nephrolithotomy can be lessened by epidural analgesia. Methods: A total of 48 patients, between 18-65 years of age and ASA I-II, for whom elective percutaneous nephrolithotomy was planned, were randomly divided into two groups namely: Group GA (n = 24): general anaesthesia by sevoflurane and fentanyl and postoperative intravenous PCA; Group GE (n = 24): epidural anaesthesia and general anaesthesia together with postoperative epidural analgesia (0...
March 14, 2016: West Indian Medical Journal
https://www.readbyqxmd.com/read/28103361/the-relationship-between-body-composition-and-renal-resistive-index-in-new-diagnosed-hypertensive-patients
#17
S Karakan, B Inan, A Aktas, H Yavuz
Objective: Obesity is a major modifiable risk factor for atherosclerosis. Thus, early risk markers are needed to identify obese subjects. The objective of this study was to examine the relationship between body composition and arterial stiffness documented by Doppler-derived renal resistive index (RRI). Materials/Subjects and Methods: We enrolled 120 new-diagnosed hypertensive patients (mean age 45±8 years) who were admitted to our nephrology clinic. Body fat percentage (BFP) was measured by bioelectrical impedance (BIA)...
February 18, 2016: West Indian Medical Journal
https://www.readbyqxmd.com/read/28103203/the-change-in-nt-pro-bnp-and-post-ptmc-echocardiography-parameters-in-patients-with-mitral-stenosis-a-pilot-study
#18
Morteza Safi, Fariba Bayat, Zahra Ahmadi, Masood Shekarchizadeh, Isa Khaheshi, Mohammadreza Naderian
BACKGROUND: The change in the level of NT-Pro-BNP (N-terminal Pro-Brain Natriuretic Peptide) is now considered as a reflection of the hemodynamic alterations and its circulatory reductions reported early after successful PTMC (percutaneous transvenous mitral commissurotomy). The present study aims to assess the change in the level of NT-Pro BNP following PTMC in patients with mitral stenosis and also to determine the association between circulatory NT-Pro BNP reduction and post-PTMC echocardiography parameters...
January 18, 2017: Romanian Journal of Internal Medicine, Revue Roumaine de Médecine Interne
https://www.readbyqxmd.com/read/28102856/the-impact-of-integrated-evaluation-of-hemodynamics-using-targeted-neonatal-echocardiography-with-indices-of-tissue-oxygenation-a-new-approach
#19
Y N Elsayed, R Amer, M M Seshia
OBJECTIVE: To study the impact of integrated evaluation of hemodynamics (IEH) using targeted neonatal echocardiography, together with regional tissue oxygenation, fractional oxygen extraction using near-infrared spectroscopy on the management of infants with compromised hemodynamics. STUDY DESIGN: Retrospective cohort comparison of two groups of infants with compromised hemodynamics. EPOCH 1: did not undergo IEH (January 2012 to March 2014); EPOCH 2: underwent IEH (April 2014 to December 2015)...
January 19, 2017: Journal of Perinatology: Official Journal of the California Perinatal Association
https://www.readbyqxmd.com/read/28102731/microfluidic-whole-blood-testing-of-platelet-response-to-pharmacological-agents
#20
Ruizhi Li, Tilo Grosser, Scott L Diamond
Platelets present a number of intracellular and transmembrane targets subject to pharmacological modulation, either for cardiovascular disease reduction or as an unintended drug response. Microfluidic devices allow human blood to clot on a defined surface under controlled hemodynamic and pharmacological conditions. The potencies of a number of antiplatelet and anticancer drugs have been tested with respect to platelet deposition on collagen under flow. Inhibitors of cyclooxygenase-1 (COX-1) reduce platelet deposition, either when added ex vivo to blood or ingested orally by patients prior to testing...
January 19, 2017: Platelets
keyword
keyword
5267
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"