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Noninvasive hemodynamic

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https://www.readbyqxmd.com/read/29788801/perioperative-noninvasive-cardiac-output-monitoring-in-parturients-with-singleton-and-twin-pregnancies-undergoing-caesarean-section-under-spinal-anesthesia-with-prophylactic-phenylephrine-drip-a-prospective-observational-cohort-study
#1
S Orbach-Zinger, E Razinsky, I Bizman, S Firman, R Gat, A Davis, E Ashwal, A Shmueli, M Vaturi, R Gabbay-Benziv, L A Eidelman
INTRODUCTION: Spinal anesthesia is considered the gold standard anesthetic technique for cesarean deliveries (CD) but is associated with a high rate of hypotension. The recent international consensus recommends continuous prophylactic phenylephrine infusion (PPI) administered throughout CD to prevent hypotension. However little information is available on the hemodynamic profiles of women with twin pregnancies as compared to singleton pregnancies perioperatively. Therefore, in this study we aim we compare maternal hemodynamic changes both intraoperatively and postoperatively with the use of the NICAS bio impendence monitor in healthy singleton versus twin parturients undergoing CD deliveries with spinal anesthesia with PPI...
May 22, 2018: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29786818/management-of-traumatic-arteriovenous-fistulas-a-tertiary-academic-center-experience
#2
Mazlum Şahin, Cihan Yücel, Eyüp Murat Kanber, Fatma Tuba İlal Mert, Burcu Bıçakhan
BACKGROUND: To present the surgical experience at a tertiary academic center of treating patients with traumatic arteriovenous fistulas (AVFs) who in whom endovascular treatment was contraindicated or in whom unsuccessful endovascular treatment had been performed. METHODS: A total of 27 patients with traumatic AVFs who underwent surgery between September 2014 and May 2016 were included. The site of injury, timing of surgery, and the surgical methods utilized were analyzed retrospectively...
May 2018: Ulusal Travma Ve Acil Cerrahi Dergisi, Turkish Journal of Trauma & Emergency Surgery: TJTES
https://www.readbyqxmd.com/read/29783255/management-of-the-patients-with-blunt-renal-trauma-20-years-of-clinical-experience
#3
Leonid P Sarychev, Yaroslav V Sarychev, Hanna L Pustovoyt, Sergiy A Sukhomlin, Sergiy M Suprunenko
OBJECTIVE: Introduction: Blunt renal trauma (BRT) is a dangerous medical condition. The aim: Analysis of effectiveness of conservative and expectant treatment tactics under ultrasound and CT monitoring in patients with blunt renal trauma (BRT). PATIENTS AND METHODS: Materials and methods: The results of treatment of 81 patients with BRT during 20 years (1998-2017) were analyzed. Amount of men was 58 (71.6%), women - 23 (28.4%). Grade I trauma was seen in 37.0% of cases, grade II - in 25...
2018: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/29782509/maternal-cardiovascular-and-endothelial-function-from-first-trimester-to-postpartum
#4
Vassiliki Kolovetsiou-Kreiner, Manfred Georg Moertl, Ilona Papousek, Karin Schmid-Zalaudek, Uwe Lang, Dietmar Schlembach, Mila Cervar-Zivkovic, Helmut Karl Lackner
OBJECTIVE: To explore noninvasively the complex interactions of the maternal hemodynamic system throughout pregnancy and the resulting after-effect six weeks postpartum. METHODS: Eighteen women were tested beginning at the 12th week of gestation at six time-points throughout pregnancy and six weeks postpartum. Heart rate, heart rate variability, blood pressure, pulse transit time (PTT), respiration, and baroreceptor sensitivity were analyzed in resting conditions...
2018: PloS One
https://www.readbyqxmd.com/read/29780244/severity-of-acidosis-affects-long-term-survival-in-copd-patients-with-hypoxemia-after-intensive-care-unit-discharge
#5
Sinem Gungor, Feyza Kargin, Ilim Irmak, Fulya Ciyiltepe, Eylem Acartürk Tunçay, Pinar Atagun Guney, Emine Aksoy, Birsen Ocakli, Nalan Adiguzel, Zuhal Karakurt
Background: Patients admitted to the intensive care unit (ICU) with acute respiratory failure (ARF) due to COPD have high mortality and morbidity. Acidosis has several harmful effects on hemodynamics and metabolism, and the current knowledge regarding the relationship between respiratory acidosis severity on the short- and long-term survival of COPD patients is limited. We hypothesized that COPD patients with severe acidosis would have a poorer short- and long-term prognosis compared with COPD patients with mild-to-moderate acidosis...
2018: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/29778861/multicenter-randomized-controlled-crossover-trial-comparing-hemodynamic-optimization-against-echocardiographic-optimization-of-av-and-vv-delay-of-cardiac-resynchronization-therapy-the-bravo-trial
#6
Zachary I Whinnett, S M Afzal Sohaib, Mark Mason, Edward Duncan, Mark Tanner, David Lefroy, Mohamed Al-Obaidi, Sue Ellery, Francisco Leyva-Leon, Tim Betts, Mark Dayer, Paul Foley, Jon Swinburn, Martin Thomas, Raj Khiani, Tom Wong, Zaheer Yousef, Dominic Rogers, Paul R Kalra, Vignesh Dhileepan, Katherine March, James Howard, Andreas Kyriacou, Jamil Mayet, Prapa Kanagaratnam, Michael Frenneaux, Alun D Hughes, Darrel P Francis
OBJECTIVES: BRAVO (British Randomized Controlled Trial of AV and VV Optimization) is a multicenter, randomized, crossover, noninferiority trial comparing echocardiographic optimization of atrioventricular (AV) and interventricular delay with a noninvasive blood pressure method. BACKGROUND: Cardiac resynchronization therapy including AV delay optimization confers clinical benefit, but the optimization requires time and expertise to perform. METHODS: This study randomized patients to echocardiographic optimization or hemodynamic optimization using multiple-replicate beat-by-beat noninvasive blood pressure at baseline; after 6 months, participants were crossed over to the other optimization arm of the trial...
May 11, 2018: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29770267/role-of-noninvasive-imaging-of-cerebral-arterial-system-in-ischemic-stroke-comparison-of-transcranial-color-coded-doppler-sonography-with-magnetic-resonance-angiography
#7
Betty Simon, Sunithi Elizabeth Mani, Shyamkumar Nidugala Keshava, Mathew Alexander, Sanjith Aaron
Aim: To determine the accuracy of transcranial color-coded Doppler sonography (TCCS) in the evaluation of cerebral arterial system in patients with ischemic stroke attending a tertiary care hospital in South India. Objectives: (1) To describe the topographical distribution of atherosclerotic lesions in the cerebral circulation in patients presenting with ischemic stroke from the Indian subcontinent and (2) to determine the accuracy of TCCS for detection and quantification of intracranial stenoses in various segments of the intracerebral arterial system in comparison with magnetic resonance angiography (MRA)...
2018: Journal of Clinical Imaging Science
https://www.readbyqxmd.com/read/29766685/test-retest-reliability-of-brain-mitochondrial-cytochrome-c-oxidase-assessed-by-functional-near-infrared-spectroscopy
#8
Lisa Holper, J John Mann
Functional near-infrared spectroscopy (fNIRS) is a noninvasive method for measuring in vivo both hemodynamic and mitochondrial metabolic activities in brain cortical structures. Although the test-retest reliability of the hemodynamic measures, such as reflected by oxygenated (HbO2), deoxygenated (HHb) hemoglobin, and the tissue oxygenation index (TOI), has been previously reported to be good to excellent, the reliability of the metabolic signal indexed by oxidized cytochrome-c-oxidase (oxCCO) has not been reported...
May 2018: Journal of Biomedical Optics
https://www.readbyqxmd.com/read/29761224/cardiopulmonary-factors-affecting-6-min-walk-distance-in-patients-with-idiopathic-inflammatory-myopathies
#9
Naoki Mugii, Fujiko Someya
Idiopathic inflammatory myopathies involve skeletal muscles and can be associated with interstitial lung disease and/or heart dysfunction, which may reduce exercise capacity. We aimed to clarify cardiopulmonary factors affecting the 6-min walk distance in patients who were able to walk without leg pain or fatigue. Twenty-three patients with inactive adult idiopathic inflammatory myopathies, and 18 age- and gender-matched healthy controls were evaluated for hemodynamic responses using noninvasive impedance cardiography during the 6-min walk test...
May 14, 2018: Rheumatology International
https://www.readbyqxmd.com/read/29753942/magnetic-resonance-imaging-technology-bridging-the-gap-between-noninvasive-human-imaging-and-optical-microscopy
#10
REVIEW
Jonathan R Polimeni, Lawrence L Wald
Technological advances in Magnetic Resonance Imaging (MRI) have provided substantial gains in the sensitivity and specificity of functional neuroimaging. Mounting evidence demonstrates that the hemodynamic changes utilized in functional MRI can be far more spatially and thus neuronally specific than previously believed. This has motivated a push toward novel, high-resolution MR imaging strategies that can match this biological resolution limit while recording from the entire human brain. Although sensitivity increases are a necessary component, new MR encoding technologies are required to convert improved sensitivity into higher resolution...
May 10, 2018: Current Opinion in Neurobiology
https://www.readbyqxmd.com/read/29748641/xiaoshuan-enteric-coated-capsule-alleviates-cognitive-impairment-by-enhancing-hippocampal-glucose-metabolism-hemodynamics-and-neuroplasticity-of-rat-with-chronic-cerebral-hypoperfusion
#11
Man-Zhong Li, Yi Zhang, Hai-Yan Zou, Ya-Li Wang, Brian-Chi Yan Cheng, Lei Wang, Qiu-Xia Zhang, Jian-Feng Lei, Hui Zhao
Chronic cerebral hypoperfusion (CCH) is identified as a critical risk factor of dementia in patients with cerebrovascular disease. Xiaoshuan enteric-coated capsule (XSECC) is a compound Chinese medicine approved by Chinese State Food and Drug Administration for promoting brain remodeling and plasticity after stroke. The present study aimed to explore the potential of XSECC to improve cognitive function after CCH and further investigate the underlying mechanisms. CCH was induced by bilateral common carotid artery occlusion (BCCAO) in rats...
May 10, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29745622/noninvasive-assessment-of-cardiac-index-using-impedance-cardiography-during-liver-transplantation-surgery-a-comparison-with-pulmonary-artery-thermodilution
#12
Vlad Suparschi, Eric Le Bihan, Amélie Toussaint, Diana Saptefrat, Heykel Ben Abdallah, Faouzi Gloulou, Farida Aouati, Tobias Gauss, Catherine Paugam-Burtz
BACKGROUND: Liver Transplantation (LT) is a high-risk surgery associated with significant hemodynamic changes requiring advanced hemodynamic monitoring. Pulmonary Artery Catheter (PAC) is still considered as a gold-standard for cardiac index (CI) measurement during LT despite association with an increased risk of complications. Noninvasive impedance cardiography (ICG) could be an interesting alternative tool for CI monitoring. The aim of this study was to compare the precision and trending ability of ICG versus PAC methods during LT...
May 9, 2018: Minerva Anestesiologica
https://www.readbyqxmd.com/read/29744017/spontaneous-recanalization-after-carotid-artery-dissection-the-case-for-an-ultrasound-only-monitoring-strategy
#13
Sarah Lumsden, Gabor Rosta, Jean Bismuth, Alan B Lumsden, Zsolt Garami
Dissection of the internal carotid artery (ICA) accounts for 5% to 25% of ischemic strokes in young adults. We report a case of spontaneous recanalization of a traumatic ICA dissection in which carotid duplex (CDU) and transcranial color-coded duplex ultrasound (TCCD) were used. A 47-year-old male presented with intermittent episodes of headache, blurry vision, anisocoria, and loss of taste sensation following a whiplash injury while body surfing. Magnetic resonance angiogram (MRA) of the neck revealed absent flow in the cavernous ICA and a clot at the skull base...
October 2017: Methodist DeBakey Cardiovascular Journal
https://www.readbyqxmd.com/read/29741808/intravoxel-incoherent-motion-ivim-imaging-in-human-achilles-tendon
#14
Kenneth Wengler, Takeshi Fukuda, Dharmesh Tank, Mingqian Huang, Elaine S Gould, Mark E Schweitzer, Xiang He
BACKGROUND: Limited microcirculation has been implicated in Achilles tendinopathy and may affect healing and disease progression. Existing invasive and noninvasive approaches to evaluate tendon microcirculation lack sensitivity and spatial coverage. PURPOSE: To develop a novel Achilles tendon intravoxel incoherent motion (IVIM) MRI protocol to overcome the limitations from low tendon T2 /T2 * value and low intratendinous blood volume and blood velocity to evaluate tendon microcirculation...
May 9, 2018: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29721510/evaluation-of-skeletal-muscle-function-and-effects-of-early-rehabilitation-during-acute-heart-failure-rationale-and-study-design
#15
Kinga Węgrzynowska-Teodorczyk, Agnieszka Siennicka, Krystian Josiak, Robert Zymliński, Monika Kasztura, Waldemar Banasiak, Piotr Ponikowski, Marek Woźniewski
Background: Acute heart failure (AHF) is associated with disturbances of the peripheral perfusion leading to the dysfunction of many organs. Consequently, an episode of AHF constitutes a "multiple organ failure" which may also affect the skeletal muscles. However, the abnormalities within skeletal muscles during AHF have not been investigated so far. The aim of this project is to comprehensively evaluate skeletal muscles (at a functional and tissue level) during AHF. Methods: The study will include ≥63 consecutive AHF patients who will be randomized into 2 groups: ≥42 with cardiac rehabilitation group versus ≥21 with standard pharmacotherapy alone...
2018: BioMed Research International
https://www.readbyqxmd.com/read/29720173/clinical-validation-and-assessment-of-aortic-hemodynamics-using-computational-fluid-dynamics-simulations-from-computed-tomography-angiography
#16
Yulei Zhu, Rui Chen, Yu-Hsiang Juan, He Li, Jingjing Wang, Zhuliang Yu, Hui Liu
BACKGROUND: Hemodynamic information including peak systolic pressure (PSP) and peak systolic velocity (PSV) carry an important role in evaluation and diagnosis of congenital heart disease (CHD). Since MDCTA cannot evaluate hemodynamic information directly, the aim of this study is to provide a noninvasive method based on a computational fluid dynamics (CFD) model, derived from multi-detector computed tomography angiography (MDCTA) raw data, to analyze the aortic hemodynamics in infants with CHD, and validate these results against echocardiography and cardiac catheter measurements...
May 2, 2018: Biomedical Engineering Online
https://www.readbyqxmd.com/read/29716910/noninvasive-blood-pressure-monitoring-and-prediction-of-fluid-responsiveness-to-passive-leg-raising
#17
Joya D Pickett, Elizabeth Bridges, Patricia A Kritek, JoAnne D Whitney
BACKGROUND: Intravenous fluid boluses are administered to patients in shock to improve tissue hypoperfusion. However, fluid boluses result in clinically significant stroke volume increases in only about 50% of patients. Hemodynamic responses to passive leg raising measured with invasive and minimally invasive methods are accurate predictors of fluid responsiveness. However, few studies have used noninvasive blood pressure measurement to evaluate responses to passive leg raising. OBJECTIVE: To determine if passive leg raising-induced increases in pulse pressure or systolic blood pressure can be used to predict clinically significant increases in stroke volume index in healthy volunteers...
May 2018: American Journal of Critical Care: An Official Publication, American Association of Critical-Care Nurses
https://www.readbyqxmd.com/read/29709752/hemodynamic-stress-inflammation-and-intracranial-aneurysms-development-and-rupture-a-systematic-review
#18
REVIEW
Francesco Signorelli, Sapir Sela, Loreto Gesualdo, Sophie Chevrel, Félix Tollet, Cyril Pailler-Mattei, Leonello Tacconi, Francis Turjman, Angelo Vacca, David B Schul
There seems to be a pathogenetic link between hemodynamics and inflammatory arterial wall alteration leading to the development and rupture of intracranial aneurysms (IAs). Noninvasive assessment of aneurysm's wall inflammatory status may guide the management of unruptured IAs by identifying reliable markers for increased rupture risk. In this systematic review, we explore the relationship between hemodynamic stress, inflammation, vascular remodeling and the formation and rupture of IAs in order to develop novel strategies to predict the individual risk of aneurysmal rupture...
April 27, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29707843/children-with-kawasaki-disease-present-elevated-stiffness-of-great-arteries-phase-contrast-mri-study
#19
Michal Schäfer, Uyen Truong, D Dunbar Ivy, Brian Fonseca, Ladonna Malone, Michael DiMaria, Alex J Barker, Daniel Vargas, Kendall S Hunter, Pei-Ni Jone, Lorna P Browne
BACKGROUND: Patients with diagnosed Kawasaki disease (KD) are known to develop extracardiac vascular lesions and are prone to accelerated stiffening of medium-size arteries. PURPOSE: To noninvasively evaluate great vessel (central aorta and main pulmonary artery (MPA)) stiffness using phase-contrast MRI (PC-MRI). STUDY TYPE: Retrospective review. SUBJECTS: Thirty-three patients with previously diagnosed KD and 15 control subjects underwent PC-MRI evaluation...
April 29, 2018: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29686815/the-effect-of-positive-end-expiratory-pressure-during-anesthesia-on-arterial-oxygen-saturation-after-surgery-in-patient-undergoing-cesarean-section
#20
Mahmood Ganjifard, Masoumeh Samii, Samaneh Kouzegaran, Amir Sabertanha
One of the major complications of general anesthesia in the recovery room is arterial oxygen desaturation and hypoxemia. Positive end-expiratory pressure (PEEP) can improve arterial oxygen saturation by increasing FRC. This study aims to evaluate the effects of applying PEEP on arterial oxygen saturation and hemodynamic parameters in the patient undergoing cesarean section in VALIASR hospital. In this double blind clinical trial we randomly allocated 120 patients of class1 and 2 ASA scheduled to undergoing cesarean section into 3 group (in 40)...
January 12, 2018: European Journal of Translational Myology
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