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Venous Saturation

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https://www.readbyqxmd.com/read/27923389/the-importance-of-albumin-infusion-rate-for-plasma-volume-expansion-following-major-abdominal-surgery-air-study-protocol-for-a-randomised-controlled-trial
#1
Svajunas Statkevicius, Johan Bonnevier, Björn P Bark, Erik Larsson, Carl M Öberg, Päivi Kannisto, Bobby Tingstedt, Peter Bentzer
BACKGROUND: Administration of fluids to restore normovolaemia is one of the most common therapeutic interventions performed peri-operatively and in the critically ill, but no study has evaluated the importance of infusion rate for the plasma volume-expanding effect of a resuscitation fluid. The present study is designed to test the hypothesis that a slow infusion of resuscitation fluid results in better plasma volume expansion than a rapid infusion. METHODS/DESIGN: The study is a single-centre, assessor-blinded, parallel-group, randomised prospective study...
December 7, 2016: Trials
https://www.readbyqxmd.com/read/27915164/can-the-cerebral-regional-oxygen-saturation-be-a-perfusion-parameter-in-shock
#2
Ashraf Al Tayar, Amr Abouelela, Khaja Mohiuddeen
INTRODUCTION: Shock, defined as a state of tissue hypoperfusion and the tissues reperfusion, is the main goal of management of shock. Increase in central venous saturation (CvSo2) and decrease in blood lactate level are useful in assessment of adequacy of tissue perfusion. Near-infrared spectroscopy is a noninvasive way to observe real-time changes in regional cerebral saturation and has been used in patients with different brain diseases. There is a small body of literature suggesting that cerebral regional oxygen saturation (CrSo2) monitoring added a value in assessment and management of intensive care unit (ICU) patients...
November 10, 2016: Journal of Critical Care
https://www.readbyqxmd.com/read/27908340/end-points-of-sepsis-resuscitation
#3
REVIEW
John C Greenwood, Clinton J Orloski
Resuscitation goals for the patient with sepsis and septic shock are to return the patient to a physiologic state that promotes adequate end-organ perfusion along with matching metabolic supply and demand. Ideal resuscitation end points should assess the adequacy of tissue oxygen delivery and oxygen consumption, and be quantifiable and reproducible. Despite years of research, a single resuscitation end point to assess adequacy of resuscitation has yet to be found. Thus, the clinician must rely on multiple end points to assess the patient's overall response to therapy...
February 2017: Emergency Medicine Clinics of North America
https://www.readbyqxmd.com/read/27908328/the-new-usual-care
#4
REVIEW
Jared Radbel, Daniel Boutsikaris
Recent literature continues to refine which components of the early goal-directed therapy (EGDT) algorithm are necessary. Given it utilizes central venous pressure, continuous central venous oxygen saturation, routine blood transfusions, and inotropic medications, this algorithm can be timely, invasive, costly, and potentially harmful. New trials highlight early recognition, early fluid resuscitation, appropriate antibiotic treatment, source control, and the application of a multidisciplinary evidence-based approach as essential components of current sepsis management...
February 2017: Emergency Medicine Clinics of North America
https://www.readbyqxmd.com/read/27894918/laser-speckle-contrast-imaging-and-oxygen-to-see-for-assessing-microcirculatory-liver-blood-flow-changes-following-different-volumes-of-hepatectomy
#5
Chong Hui Li, Xin Lan Ge, Ke Pan, Peng Fei Wang, Yi Nan Su, Ai Qun Zhang
OBJECTIVE: Portal hyperperfusion after extended hepatectomy or small-for-size liver transplantation may induce organ dysfunction and failure. This study was designed to monitor and characterize the hepatic microcirculatory perfusion following different volumes of hepatectomy in rats by using laser speckle contrast image (LSCI) and Oxygen to See (O2C), a spectrometric device. METHODS: The microcirculatory liver blood flow of the rats that underwent 68%, 85% and 90% hepatectomy (68PH, 85PH and 90PH) was monitored with LSCI and O2C before and following the hepatectomy...
November 25, 2016: Microvascular Research
https://www.readbyqxmd.com/read/27893583/retinal-vessel-oxygen-saturation-and-vessel-diameter-in-inactive-graves-ophthalmopathy
#6
Xiaonan Yang, Danping Huang, Siming Ai, Xuanwei Liang, Jing Zhao, Lei Fang
PURPOSE: To investigate whether inactive thyroid-associated ophthalmopathy (TAO) affects retinal oxygen saturation and/or vessel diameter. METHODS: Via an observational case-control study, retinal circulation was measured in patients with inactive TAO (mild, moderate, and severe) and normal subjects by retinal oximetry. Complete ophthalmologic examination, including noncontact tonometry and Hertel exophthalmometry, was performed; history of smoking and dysthyroid disease were recorded...
November 23, 2016: Ophthalmic Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/27884326/appropriate-timing-of-blood-sampling-for-blood-gas-analysis-in-the-ventilated-rabbit
#7
Kiguna Sei, Masanori Fujita, Shinpei Okawa, Takeshi Hirasawa, Toshihiro Kushibiki, Hidenori Sasa, Kenichi Furuya, Miya Ishihara
BACKGROUND: Arterial and venous blood gas analyses (BGAs) are essential to evaluate devices that measure biological oxygenation. The appropriate timing of blood sampling for BGA after respiratory rate (RR) change in animal experiments has not been reported. This study investigated the appropriate timing of blood sampling for BGA in ventilated rabbits and whether venous samples are an alternative to arterial samples. MATERIALS AND METHODS: Under general anesthesia, 14 rabbits (body weight, 3...
December 2016: Journal of Surgical Research
https://www.readbyqxmd.com/read/27873173/comparison-of-non-invasive-peripheral-venous-saturations-with-venous-blood-co-oximetry
#8
A M Belhaj, J P Phillips, P A Kyriacou, R M Langford
The estimation of venous oxygen saturations using photoplethysmography (PPG) may be useful as a noninvasive continuous method of detecting changes in regional oxygen supply and demand (e.g. in the splanchnic circulation). The aim of this research was to compare PPG-derived peripheral venous oxygen saturations directly with venous saturation measured from co-oximetry blood samples, to assess the feasibility of non-invasive local venous oxygen saturation. This paper comprises two similar studies: one in healthy spontaneously-breathing volunteers and one in mechanically ventilated anaesthetised patients...
November 21, 2016: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/27865689/retinal-oximetry-during-treatment-of-retinal-vein-occlusion-by-ranibizumab-in-patients-with-high-blood-pressure-and-dyslipidemia
#9
C Keilani, A Halalchi, D Wakpi Djeugue, A Regis, S Abada
INTRODUCTION: In the present study, we examined retinal vascular oxygen saturation in patients with retinal vein occlusion (RVO), high blood pressure (HBP) and dyslipidemia, before and during intravitreal vascular endothelial growth factor (VEGF) injection (ranibizumab). METHODS: We retrospectively reviewed the medical records of six patients with visual acuity (VA) reduced by macular edema (ME) secondary to RVO with HBP and dyslipidemia, who underwent intravitreal anti-VEGF injection between October 2014 and February 2015 in the department of ophthalmology of François-Quesnay Hospital at Mantes-la-Jolie (France)...
November 16, 2016: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/27864880/preoperative-and-postoperative-measurements-of-retinal-vessel-oxygen-saturation-in-patients-with-different-grades-of-cataracts
#10
Hui Chen, Haotian Lin, Wan Chen, Bo Zhang, Wu Xiang, Qianying Gao, Weirong Chen, Yizhi Liu
PURPOSE: To assess the retinal vessel blood oxygen saturation preoperatively and postoperatively in patients with different grades of cataracts. METHODS: This study included 40 eyes from 40 patients with senile cataracts ranging from grade 1 to 3. All 40 eyes received standard phacoemulsification and intraocular lens implantation. The mean retinal arterial and venular oxygen saturation (SO2 ) levels were measured using the Oxymap system prior to, immediately after and 3 months after cataract surgery...
November 19, 2016: Acta Ophthalmologica
https://www.readbyqxmd.com/read/27851099/1463-lactate-levels-and-central-venous-oxygen-saturation-prevalent-and-predictive-of-outcome
#11
Anja Kathrin Jaehne, Mustafa Baldawi, Jenna Watson, Mustafa Al-Jubouri, Richard Belanger, Victor Coba, Jasreen Gill, Emanuel Rivers
No abstract text is available yet for this article.
December 2016: Critical Care Medicine
https://www.readbyqxmd.com/read/27849882/240-thenar-muscle-oxygen-saturation-is-it-a-good-surrogate-for-central-venous-oxygenation
#12
Ravi Shankar Samraj, Dipankar Gupta, James Fudge, Himesh Vyas
No abstract text is available yet for this article.
December 2016: Critical Care Medicine
https://www.readbyqxmd.com/read/27836659/iron-metabolism-in-african-american-women-in-the-second-and-third-trimesters-of-high-risk-pregnancies
#13
Lauren Welke, Mary Dawn Koenig, Jessica L Thomson, Elizabeta Nemeth, Rosemary White-Traut, Barbara L McFarlin, Carmen Giurgescu, Christopher Engeland, Michelle A Kominiarek, Lisa Tussing-Humphreys
OBJECTIVE: To examine iron metabolism during the second and third trimesters in African American women with high-risk pregnancies. DESIGN: Longitudinal pilot study. SETTING: Large, university-based, urban Midwestern U.S. medical center. PARTICIPANTS: Convenience sample of 32 African American women with high-risk pregnancies seeking care at an urban maternal-fetal medicine clinic. METHODS: Nonfasting venous blood was collected in the second and third trimesters to assess iron status, hepcidin, and systemic inflammation...
November 8, 2016: Journal of Obstetric, Gynecologic, and Neonatal Nursing: JOGNN
https://www.readbyqxmd.com/read/27829180/changes-of-central-venous-oxygen-saturation-define-fluid-responsiveness-in-patients-with-septic-shock-a-prospective-observational-study
#14
Biao Xu, Xiaobo Yang, Chunyao Wang, Wei Jiang, Li Weng, Xiaoyun Hu, Jinmin Peng, Bin Du
PURPOSE: To evaluate whether the changes of central venous oxygen saturation (Scvo2) after fluid challenge can define fluid responsiveness in patients with septic shock. METHODS: In this prospective observational study, septic shock patients with invasive cardiac output monitoring requiring fluid challenge were included. Cardiac index (CI) and Scvo2 were measured before and after fluid challenges. The changes of CI (ΔCI) and the changes of Scvo2 (ΔScvo2) were calculated and analyzed using Pearson correlation...
October 19, 2016: Journal of Critical Care
https://www.readbyqxmd.com/read/27822948/delayed-high-output-heart-failure-due-to-arteriovenous-fistula-complicated-with-herniated-disc-surgery
#15
Taeshik Park, Sang Ho Park, Alok Arora
A 36-year-old male presented with progressive exertional dyspnea over months. Physical examination showed jugular venous distension, lung crecipitations, femoral bruit and pitting pedal edema. Echocardiogram showed a dilated right ventricle with severe pulmonary hypertension and a non collapsing inferior vena cava (IVC). On right heart catheterization, IVC oxygen saturation was noted at 92% suggesting arterial mixing; a computed tomography of the abdomen showed a fistula between the right common iliac artery to the right common iliac vein at L4 level and a massive IVC; this was linked to trauma from a disectomy done 16 years ago at L4-L5 level...
December 2016: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/27821162/physiological-effects-of-invasive-ventilation-with-neurally-adjusted-ventilatory-assist-nava-in-a-crossover-study
#16
Jean-Michel Liet, François Barrière, Bénédicte Gaillard-Le Roux, Pierre Bourgoin, Arnaud Legrand, Nicolas Joram
BACKGROUND: Neurally Adjusted Ventilatory Assist (NAVA) is a mode of assisted mechanical ventilation that delivers inspiratory pressure proportionally to the electrical activity of the diaphragm. To date, no pediatric study has focused on the effects of NAVA on hemodynamic parameters. This physiologic study with a randomized cross-over design compared hemodynamic parameters when NAVA or conventional ventilation (CV) was applied. METHODS: After a baseline period, infants received NAVA and CV in a randomized order during two consecutive 30-min periods...
November 8, 2016: BMC Pediatrics
https://www.readbyqxmd.com/read/27817953/mechanically-assisted-bidirectional-cavopulmonary-shunt-in-neonates-and-infants-an-acute-human-pilot-study
#17
Osami Honjo, Sandra L Merklinger, John B Poe, Anne-Marie Guerguerian, Hargen Zhang, Katherine L Taylor, Glen S Van Arsdell
OBJECTIVE: Poor survival following surgical palliation for hypoplastic left heart syndrome (HLHS) raises the question of the need for a paradigm shift. This is the first human study to investigate the possibility of primary "in-series" palliation in neonates and infants with HLHS in an acute setting with the aid of 2 types of mechanical assist: superior vena cava (SVC)-to-pulmonary artery (PA) pump assist and SVC-to-right atrium (RA) oxygenation assist. METHODS: By rearranging the cannula sites and flow rates for modified ultrafiltration, 2 types of mechanically assisted bidirectional cavopulmonary shunt (BCPS) circulation were simulated for 20 minutes...
September 28, 2016: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/27790498/massive-pulmonary-embolism-in-a-patient-using-warfarin-at-therapeutic-dose
#18
Sunnetcioglu Aysel, Esen Ramazan, Arisoy Ahmet
Warfarin sodium is commonly used for the prevention and treatment of thromboembolism. The efficacy of warfarin therapy depends on maintaining the International Normalised Ratio (INR) within the target range for the indication. A 56-year-old male presented to the emergency department with dyspnea and chest pain, together with pain and swelling in both legs. The patient had been taking warfarin at the therapeutic dose since having undergone an aortic valve replacement four years ago. His vital signs were an arterial pressure of 60/30 heart rate of 138 beats per minute, respiratory rate of 30 per minute and oxygen saturation of 60%...
September 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27782315/minimally-circulatory-assisted-on-pump-beating-coronary-artery-bypass-grafting-for-patients-with-complex-conditions-for-off-pump-surgery
#19
Tomohiro Mizuno, Koso Egi, Kenji Sakai, Keiji Oi, Tsuyoshi Hachimaru, Tohru Makita, Kiyotoshi Oishi, Hirokuni Arai
Off-pump coronary artery bypass grafting (OPCAB) in patients with acute myocardial infarction (AMI) is difficult because of circulatory deterioration during displacement of the heart. At our institution, we performed minimally circulatory-assisted on-pump beating coronary artery bypass grafting (MICAB) in these patients. During MICAB, support flow was controlled at a minimal level to maintain a systemic blood pressure of approximately 100 mm Hg and a pulmonary arterial systolic pressure of <30 mm Hg, providing optimal pulsatile circulation for end-organ perfusion and prevention of heart congestion...
October 26, 2016: Artificial Organs
https://www.readbyqxmd.com/read/27775227/retinal-oxygen-saturation-before-and-after-glaucoma-surgery
#20
Eri Nitta, Kazuyuki Hirooka, Takeru Shimazaki, Shino Sato, Kaori Ukegawa, Yuki Nakano, Akitaka Tsujikawa
PURPOSE: This study compared retinal vessel oxygen saturation before and after glaucoma surgery. METHODS: Retinal oxygen saturation in glaucoma patients was measured using a non-invasive spectrophotometric retinal oximeter. Adequate image quality was found in 49 of the 108 consecutive glaucoma patients recruited, with 30 undergoing trabeculectomy, 11 EX-PRESS and eight trabeculotomy. Retinal oxygen saturation measurements in the retinal arterioles and venules were performed at 1 day prior to and at approximately 10 days after surgery...
October 24, 2016: Acta Ophthalmologica
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