keyword
MENU ▼
Read by QxMD icon Read
search

hemodynamic monitor

keyword
https://www.readbyqxmd.com/read/28822391/the-impact-of-hemodynamic-transesophageal-echocardiography-on-the-use-of-continuous-renal-replacement-therapy-in-trauma
#1
Madison Griffin, Brett Howard, Sam Devictor, Josh Ferenczy, Frances Cobb, D Benjamin Christie
Post-traumatic fluid management is a widely debated topic. No best-practice consensus exists. Adverse outcomes such as acute kidney injury or volume overload are common. Continuous renal replacement therapy (CRRT) is an adjunct therapy for severe acute renal failure and volume overload, but is costly and not without risk. Hemodynamic transesophageal echocardiography (hTEE) is widely accepted as a reliable way to monitor volume status of intensive care unit (ICU) patients. Although data exist evaluating hTEE and CRRT independently, there is a lack of research mutually inclusive of the two...
August 1, 2017: American Surgeon
https://www.readbyqxmd.com/read/28822141/applicability-of-quantitative-optical-imaging-techniques-for-intraoperative-perfusion-diagnostics-a-comparison-of-laser-speckle-contrast-imaging-sidestream-dark-field-microscopy-and-optical-coherence-tomography
#2
Sanne M Jansen, Daniel M de Bruin, Dirk J Faber, Iwan J G G Dobbe, Erik Heeg, Dan M J Milstein, Simon D Strackee, Ton G van Leeuwen
Patient morbidity and mortality due to hemodynamic complications are a major problem in surgery. Optical techniques can image blood flow in real-time and high-resolution, thereby enabling perfusion monitoring intraoperatively. We tested the feasibility and validity of laser speckle contrast imaging (LSCI), optical coherence tomography (OCT), and sidestream dark-field microscopy (SDF) for perfusion diagnostics in a phantom model using whole blood. Microvessels with diameters of 50, 100, and 400  μm were constructed in a scattering phantom...
August 2017: Journal of Biomedical Optics
https://www.readbyqxmd.com/read/28821360/development-and-implementation-of-an-early-mobility-program-for-mechanically-ventilated-pediatric-patients
#3
Kristina A Betters, Kiran B Hebbar, David Farthing, Brittany Griego, Tricia Easley, Hartley Turman, Lauren Perrino, Stephanie Sparacino, Mary L deAlmeida
PURPOSE: Early mobility (EM) is being used in adult ICUs in an effort to treat and prevent intensive care unit acquired weakness (ICU-AW) and Post-Intensive Care Syndrome (PICS). Data supports children suffer from ICU-AW and PICS as well. Our objective was to create and implement an EM protocol for pediatric patients receiving invasive mechanical ventilation. METHODS: A multidisciplinary EM committee was formed to create and implement an EM protocol in a quarternary care PICU...
August 9, 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/28821337/intraoperative-cerebral-perfusion-disturbances-during-transcatheter-aortic-valve-replacement
#4
Jonathon P Fanning, Darren L Walters, Allan J Wesley, Chris Anstey, Samuel Huth, Judith Bellapart, Caroline Collard, Ivan L Rapchuk, Sarvesh Natani, Michael Savage, John F Fraser
BACKGROUND: Transcatheter aortic valve replacement entails profound and unavoidable hemodynamic perturbations that may contribute to the neurological injury associated with the procedure. METHODS: Thirty-one patients were monitored with cerebral oximetry as a surrogate marker of perfusion while undergoing transcatheter aortic valve replacement via a transfemoral approach under general anesthesia to detect intraoperative hypoperfusion insult. Serial neurologic, cognitive, and cerebral magnetic resonance imaging assessments were administered to objectively quantify perioperative neurologic injury and ascertain any association with significant cerebral oximetry disturbances...
August 16, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28820609/cardio-pulmonary-interactions-physiologic-basis-and-clinical-applications
#5
Michael R Pinsky
The hemodynamic effects of ventilation can be grouped into three concepts: 1) spontaneous ventilation is exercise; 2) changes in lung volume alter autonomic tone, pulmonary vascular resistance, and can compress the heart in the cardiac fossa; 3) spontaneous inspiratory efforts decrease intrathoracic pressure (ITP) increasing venous return and impeding left ventricular (LV) ejection; whereas positive pressure ventilation decreases venous return and unloads LV ejection. Spontaneous inspiratory efforts may induce acute LV failure and cardiogenic pulmonary edema...
August 18, 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/28819006/increased-tissue-oxygenation-explains-the-attenuation-of-hyperaemia-upon-repetitive-pneumatic-compression-of-the-lower-leg
#6
Alessandro Messere, Gianluca Ceravolo, Walter Franco, Daniela Maffiodo, Carlo Ferraresi, Silvestro Roatta
Aim The rapid hyperaemia evoked by muscle compression is short-lived and was recently shown to undergo a rapid decrease even in spite of continuing mechanical stimulation. The present study aims at investigating the mechanisms underlying this attenuation which include local metabolic mechanisms, desensitization of mechano-sensitive pathways, and reduced efficacy of the muscle pump. Methods In 10 healthy subjects short sequences of mechanical compressions (n=3-6; 150 mmHg) of the lower leg were delivered at different inter-stimulus intervals (ranging from 20 to 160 s) through a customized pneumatic device...
August 17, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28813523/et-26-hydrochloride-et-26-hcl-has-similar-hemodynamic-stability-to-that-of-etomidate-in-normal-and-uncontrolled-hemorrhagic-shock-uhs-rats
#7
Bin Wang, Shouming Chen, Jun Yang, Linghui Yang, Jin Liu, Wensheng Zhang
OBJECTIVE: ET-26 HCl is a promising sedative-hypnotic anesthetic with virtually no effect on adrenocortical steroid synthesis. However, whether or not ET-26 HCl also has a sufficiently wide safety margin and hemodynamic stability similar to that of etomidate and related compounds remains unknown. In this study, the effects of ET-26 HCl, etomidate and propofol on therapeutic index, heart rate (HR), mean arterial pressure (MAP), maximal rate for left ventricular pressure rise (Dmax/t), and maximal rate for left ventricular pressure decline (Dmin/t) were investigated in healthy rats and a rat model of uncontrolled hemorrhagic shock (UHS)...
2017: PloS One
https://www.readbyqxmd.com/read/28804906/efficacy-of-a-mephentermine-based-product-as-a-vasopressor-and-a-cardiac-performance-enhancer-when-given-intramuscularly-to-cattle
#8
D N Q Cunha, C L Del Rio, B L Youngblood, E L Ferris, G E Geist, Y Ueyama, L C Franz, S Mathur, R L Hamlin
The goal of this study was to confirm the vasopressor and cardiac effects of POTENAY(®) INJETÁVEL (POT), a mephentermine-based product, given to cattle with induced vascular/cardiac depression. Ten healthy Holstein cattle (206 ± 13 kg) followed a randomized-complete-block design (RCBD) utilizing crossover study design. Each animal randomly received (1 ml/25 kg, IM) of either POT (n = 10) or volume-matched placebo control (0.9%NaCl, CP, n = 10). A subset of animals (n = 5) received POT first (day 0) while the remaining (n = 5) received CP; after a six-day washout period, cattle received the opposite compound...
August 14, 2017: Journal of Veterinary Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28804659/fatal-systemic-vasoconstriction-in-a-case-of-metastatic-small-intestinal-net
#9
Stenzel Jochen, Noe Sebastian, Holzapfel Konstantin, Erlmeier Franziska, Eyer Florian
An increased release of serotonin secreted by ileal NETs is thought to be the major factor causing the carcinoid syndrome. However, in acutely arising carcinoid crisis also other vasoactive factors may lead to hazardous fluctuations in blood pressure and bronchial constriction. In rare cases, systemic vasoconstriction can be observed, probably caused by catecholamines or similar acting substances. Here, we report a fatal case of fulminant systemic vasoconstriction possibly caused by catecholamines in a patient with metastasized ileal NET...
2017: Case Reports in Gastrointestinal Medicine
https://www.readbyqxmd.com/read/28803941/fast-imaging-for-mapping-dynamic-networks
#10
REVIEW
Pierre LeVan, Burak Akin, Jürgen Hennig
The development of highly accelerated fMRI acquisition techniques has led to novel possibilities to monitor cerebral activity non-invasively and with unprecedented temporal resolutions. With the emergence of dynamic connectivity and its ability to provide a much richer characterization of brain function compared to static measures, fast fMRI may yet play a crucial role in tracking dynamically varying networks. In spite of the dominance of slow hemodynamic contributions to the BOLD signal, high temporal sampling rates nevertheless improve the measurement of physiological noise, yielding an exceptional sensitivity for the detection of periods of transient connectivity at time scales of a few tens of seconds...
August 10, 2017: NeuroImage
https://www.readbyqxmd.com/read/28803115/immunological-response-to-nitroglycerin-loaded-shear-responsive-liposomes-in-vitro-and-in-vivo
#11
Marzia Buscema, Sofiya Matviykiv, Tamás Mészáros, Gabriela Gerganova, Andreas Weinberger, Ute Mettal, Dennis Mueller, Frederik Neuhaus, Etienne Stalder, Takashi Ishikawa, Rudolf Urbanics, Till Saxer, Thomas Pfohl, János Szebeni, Andreas Zumbuehl, Bert Müller
Liposomes formulated from the 1,3-diamidophospholipid Pad-PC-Pad are shear-responsive and thus promising nano-containers to specifically release a vasodilator at stenotic arteries. The recommended preclinical safety tests for therapeutic liposomes of nanometer size include the in vitro assessment of complement activation and the evaluation of the associated risk of complement activation-related pseudo-allergy (CARPA) in vivo. For this reason, we measured complement activation by Pad-PC-Pad formulations in human and porcine sera, along with the nanopharmaceutical-mediated cardiopulmonary responses in pigs...
August 10, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28802543/outcomes-and-predictors-of-failure-of-non-invasive-ventilation-in-patients-with-community-acquired-pneumonia-in-the-emergency-department
#12
Amjad Al-Rajhi, Anwar Murad, P Z Li, Jason Shahin
OBJECTIVE: We set out to describe the use and analyze the predictors of non-invasive ventilation failure in patients with community-acquired pneumonia who receive non-invasive ventilation as first line ventilatory therapy in the emergency department. METHODS: A retrospective cohort study was conducted among consecutive patients with community acquired pneumonia requiring ventilator support presenting to two tertiary care university-affiliated emergency departments...
August 7, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28802090/assessment-of-the-dynamics-of-human-glymphatic-system-by-near-infrared-spectroscopy-nirs
#13
Teemu Myllylä, Markus Harju, Vesa Korhonen, Alexander Bykov, Vesa Kiviniemi, Igor Meglinski
Fluctuations in brain water content has attracted increasing interest, particularly as regards studies of the glymphatic system, which is connected with the complex organisation of dural lymphatic vessels, responsible for cleaning tissue. Disturbances of glymphatic circulation are associated with several brain disorders, including dementia. This paper introduces an approach to non-invasive measurement of water dynamics in the human brain utilizing near-infrared spectroscopy (NIRS). We demonstrate the possibility to sense dynamic variations of water content between the skull and grey matter, for instance, in the subarachnoid space...
August 12, 2017: Journal of Biophotonics
https://www.readbyqxmd.com/read/28801969/anesthetic-management-for-intestinal-transplantation-a-decade-of-experience
#14
Jeron Zerillo, Sang Kim, Bryan Hill, David Shapiro, Hung-Mo Lin, Alyssa Burnham, Jang Moon, Kishore Iyer, Samuel DeMaria
BACKGROUND: Intestinal transplantation (ITx) is the definitive therapy for patients suffering from intestinal failure. Previous published reports suggest that these cases should be managed peri-operatively with the same intensive monitors and techniques as in liver transplantation. METHODS: We retrospectively reviewed the anesthetic management of sixty-seven isolated intestinal, intestinal-pancreas and intestinal-kidney transplants over the previous decade (2005-2015) in our tertiary care institution...
August 12, 2017: Clinical Transplantation
https://www.readbyqxmd.com/read/28800887/evaluation-of-the-boussignac-cardiac-arrest-device-b-card-during-cardiopulmonary-resuscitation-in-an-animal-model
#15
Johanna C Moore, Lionel Lamhaut, Alice Hutin, Kenneth W Dodd, Aaron E Robinson, Michael C Lick, Bayert J Salverda, Mason B Hinke, Jose Larabere, Guillaume Debaty, Nicolas Segal
AIM OF THE STUDY: The purpose of this study was to examine continuous oxygen insufflation (COI) in a swine model of cardiac arrest. The primary hypothesis was COI during standard CPR (S-CPR) should result in higher intrathoracic pressure (ITP) during chest compression and lower ITP during decompression versus S-CPR alone. These changes with COI were hypothesized to improve hemodynamics. The second hypothesis was that changes in ITP with S-CPR+COI would result in superior hemodynamics compared with active compression decompression (ACD) + impedance threshold device (ITD) CPR, as this method primarily lowers ITP during chest decompression...
August 8, 2017: Resuscitation
https://www.readbyqxmd.com/read/28800207/optically-derived-metabolic-and-hemodynamic-parameters-predict-hippocampal-neurogenesis-in-the-btbr-mouse-model-of-autism
#16
David Abookasis, Danit Lerman, Hava Roth, Mati Tfilin, Gadi Turgeman
In the present study, we made use of dual-wavelength laser speckle imaging (DW-LSI) to assess cerebral blood flow in the BTBR genetic mouse model of Autism Spectrum Disorder, as well as control (C57Bl/6J) mice. Since the deficits in social behavior demonstrated by BTBR mice are attributed to changes in neural tissue structure and function, we postulated that these changes can be detected optically using DW-LSI. BTBR mice demonstrated reductions in both cerebral blood flow (CBF) and cerebral oxygen metabolism (CMRO2 ), as suggested by studies using conventional neuroimaging technologies to reflect impaired neuronal activation and cognitive function...
August 11, 2017: Journal of Biophotonics
https://www.readbyqxmd.com/read/28800001/basic-hemodynamic-monitoring-using-ultrasound-or-electrical-cardiometry-during-transportation-of-neonates-and-infants
#17
Angele Boet, Gilles Jourdain, Serge Demontoux, Sebastien Hascoet, Pierre Tissieres, Catherine Rucker-Martin, Daniele De Luca
OBJECTIVES: Electrical cardiometry and heart ultrasound might allow hemodynamic evaluation during transportation of critically ill patients. Our aims were 1) to test feasibility of stroke volume monitoring using electrical cardiometry or ultrasound during transportation and 2) to investigate if transportation impacts on electrical cardiometry and ultrasound reliability. DESIGN: Prospective, pragmatic, feasibility cohort study. SETTING: Mobile ICUs specialized for neonatal and pediatric transportation...
August 9, 2017: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/28798258/preserved-right-ventricular-integrity-in-a-new-telemetric-rat-model-of-severe-pulmonary-hypertension
#18
Catharina Schreiber, Magdalena S Eilenberg, Attila Kiss, Helga Bergmeister, Bruno K Podesser, Julia Mascherbauer, Diana Bonderman
Telemetric monitoring of hemodynamic parameters has become an established standard in experimental models of pulmonary arterial hypertension (PAH). To that purpose, a dedicated catheter is usually implanted through the right ventricular wall of study animals. Drawbacks of this standard technique are: obtained pressures are from the right ventricle and therefore only surrogates for pulmonary arterial pressures, and furthermore, right ventricular myocardium is always damaged to a certain degree. To overcome shortcomings of standard hemodynamic assessment, we modified an established rat model, where severe PAH is induced by left-sided pneumonectomy plus monocrotaline injection...
August 10, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28790281/-perioperative-management-for-prevention-of-cardiac-complications-in-general-thoracic-surgery
#19
Terumoto Koike, Masanori Tsuchida
For general thoracic surgeons, perioperative management for prevention of cardiac complications is important because patients undergoing general thoracic surgery often have risk factors for cardiac disease. Sever cardiac failure should be detected and treated prior to surgery, and coronary artery may be examined in patients with risk factors for ischemic heart disease. Pulmonary resection sometimes causes right-sided heart failure due to reducing pulmonary vascular bed. In high-risk patients for rightsided heart failure, pulmonary artery pressure monitoring by right heart catheterization should be considered in addition to blood pressure and central venous pressure monitoring, and precise fluid management is required...
July 2017: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/28789661/reference-free-determination-of-tissue-absorption-coefficient-by-modulation-transfer-function-characterization-in-spatial-frequency-domain
#20
Weiting Chen, Huijuan Zhao, Tongxin Li, Panpan Yan, Kuanxin Zhao, Caixia Qi, Feng Gao
BACKGROUND: Spatial frequency domain (SFD) measurement allows rapid and non-contact wide-field imaging of the tissue optical properties, thus has become a potential tool for assessing physiological parameters and therapeutic responses during photodynamic therapy of skin diseases. The conventional SFD measurement requires a reference measurement within the same experimental scenario as that for a test one to calibrate mismatch between the real measurements and the model predictions. Due to the individual physical and geometrical differences among different tissues, organs and patients, an ideal reference measurement might be unavailable in clinical trials...
August 8, 2017: Biomedical Engineering Online
keyword
keyword
106280
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"