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Central Venous Pressure

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https://www.readbyqxmd.com/read/28820646/consequences-of-puberty-on-efficacy-of-intraocular-pressure-lowering-drugs-in-male-dutch-belted-rabbits
#1
Cassandra L Hays, Kingsley C Okafor, Shan Fan, Robin High, Dhirendra P Singh, Carol B Toris
PURPOSE: To investigate the changes in intraocular pressure (IOP), aqueous flow, and outflow facility, as well as efficacy of IOP-lowering drugs before and after sexual development in rabbits. METHODS: Male Dutch-belted rabbits were studied at night between the ages of 8 and 44 weeks. During these times, body weight, testicular volume, and serum testosterone were measured to monitor sexual maturity. Ocular measurements included anterior chamber depth, central corneal thickness, IOP, aqueous flow, and outflow facility...
August 18, 2017: Journal of Ocular Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28819317/intradialytic-central-venous-oxygen-saturation-is-associated-with-clinical-outcomes-in-hemodialysis-patients
#2
Lili Chan, Hanjie Zhang, Anna Meyring-Wösten, Israel Campos, Doris Fuertinger, Stephan Thijssen, Peter Kotanko
Central venous oxygen saturation (ScvO2) in the superior vena cava is predominantly determined by cardiac output, arterial oxygen content, and oxygen consumption by the upper body. While abnormal ScvO2 levels are associated with morbidity and mortality in non-uremic populations, ScvO2 has received little attention in hemodialysis patients. From 1/2012 to 8/2015, 232 chronic hemodialysis patients with central venous catheters as vascular access had their ScvO2 monitored during a 6-month baseline period and followed for up to 36 months...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28804896/load-dependence-of-myocardial-deformation-variables-a-clinical-strain-echocardiographic-study
#3
M Fredholm, K Jörgensen, E Houltz, S-E Ricksten
BACKGROUND: The effects of left ventricular (LV) loading on myocardial deformation variables are not well-studied in the clinical setting. In the present study, we evaluated the effects of isolated changes in preload, afterload and heart rate on LV longitudinal strain, systolic (SR-S) and early diastolic strain rate (SR-E) in post-cardiac surgery patients. METHODS: Twenty-one patients were studied early after cardiac surgery. Longitudinal myocardial strain and SR were analysed off-line using 2-D speckle echocardiography...
August 13, 2017: Acta Anaesthesiologica Scandinavica
https://www.readbyqxmd.com/read/28803717/noninvasive-stroke-volume-variation-using-electrical-velocimetry-for-predicting-fluid-responsiveness-in-dogs-undergoing-cardiac-surgery
#4
Kazumasu Sasaki, Tatsushi Mutoh, Tomoko Mutoh, Yasuyuki Taki, Ryuta Kawashima
OBJECTIVE: To evaluate the ability of a noninvasive cardiac output monitoring system with electrical velocimetry (EV) for predicting fluid responsiveness in dogs undergoing cardiac surgery. STUDY DESIGN: Prospective experimental trial. ANIMALS: A total of 30 adult Beagle dogs. METHODS: Stroke volume (SV), stroke volume variation (SVV) and cardiac index were measured using the EV device in sevoflurane-anaesthetized, mechanically ventilated dogs undergoing thoracotomies for experimental creation of right ventricular failure...
January 11, 2017: Veterinary Anaesthesia and Analgesia
https://www.readbyqxmd.com/read/28795349/association-between-elevated-central-venous-pressure-and-outcomes-in-critically-ill-patients
#5
Dong-Kai Li, Xiao-Ting Wang, Da-Wei Liu
BACKGROUND: Some prior studies have shown that elevated mean central venous pressure in certain patient populations and disease processes may lead to poor prognosis. However, these studies failed to generalize the concept of elevated central venous pressure (ECVP) load to all patients in critical care settings because of the limited cases and exclusive cohorts. The aim of the study was to investigate the association between elevated central venous pressure and outcomes in critical care...
August 9, 2017: Annals of Intensive Care
https://www.readbyqxmd.com/read/28790281/-perioperative-management-for-prevention-of-cardiac-complications-in-general-thoracic-surgery
#6
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/28781891/vascular-occlusions-following-ocular-surgical-procedures-a-clinical-observation-of-vascular-complications-after-ocular-surgery
#7
Charlotte Fischer, Anne Bruggemann, Annette Hager, Josep Callizo Planas, Johann Roider, Hans Hoerauf
BACKGROUND: Ocular vascular occlusions following intraocular procedures are a rare complication. We report a case series of patients with retinal vascular occlusions or anterior ischemic optic neuropathy (AION) after anterior and posterior segment surgery and demonstrate possible risk factors. METHODS: Observational case series. RESULTS: In ten patients, vascular occlusions were observed within ten weeks after intraocular surgery: branch retinal arterial occlusion (BRAO) (n = 2), central retinal artery occlusion (CRAO) (n = 2), central retinal vein occlusion (CRVO) (n = 1), branch retinal vein occlusion (BRVO) (n = 1), anterior ischemic optic neuropathy (AION) (n = 3), and combined central artery and vein occlusion (n = 1)...
2017: Journal of Ophthalmology
https://www.readbyqxmd.com/read/28777405/bursting-pressure-of-triple-lumen-central-venous-catheters-under-static-and-dynamic-loads
#8
Tim Beckingham, Andy Roberts, Alana St John, Gerry O'Callaghan
INTRODUCTION: Central venous catheter (CVC) access is commonplace in intensive care units. Patients undergoing computed tomographic angiography require injection of contrast at high flow rates (4.5 mL/s), often CVC access is not used due to safety concerns. The CVC might rupture at high flow rates, resulting in CVC fragmentation and embolization or contrast extravasation.The objective of this study is to determine the pressure required to burst a CVC under static load and compare this to the pressure generated by injection of contrast at high flow rates (dynamic load) through the distal (16-g) lumen of a triple-lumen CVC...
August 3, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/28776215/-cavernomas-of-the-central-nervous-system-observational-study-of-111-patients
#9
C Mayer, U M Mauer, G Bluhm, R Mathieu, C Hackenbroch, S Mayer
PURPOSE: The prevalence of cavernomas (cavernous hemangioma) is 0.1-0.7%. Cavernomas are often found as an incidental finding within the framework of magnetic resonance imaging (MRI) examinations in mainly young and healthy patients. In the literature, the reported risk of hemorrhage varies greatly and is sometimes higher than that of aneurysms, which is surprising given that cavernomas are part of the low blood pressure system. After the diagnosis the medical practitioner and the patient have to decide on the further therapy, either surgical removal or the strategy of watchful waiting (conservative treatment)...
August 3, 2017: Der Nervenarzt
https://www.readbyqxmd.com/read/28763434/comparison-of-3-hypertonic-saline-and-20-mannitol-for-reducing-intracranial-pressure-in-patients-undergoing-supratentorial-brain-tumor-surgery-a-randomized-double-blind-clinical-trial
#10
Achmet Ali, Aylin Tetik, Pulat A Sabanci, Demet Altun, Nukhet Sivrikoz, Taner Abdullah, Aydin Aydoseli, Altay Sencer, Ibrahim O Akinci
BACKGROUND: In the present study, we hypothesized that 3% hypertonic saline (HS) is more effective than 20% mannitol to reduce intracranial pressure (ICP) and to modify brain bulk in patients undergoing an elective supratentorial craniotomy. MATERIALS AND METHODS: After institutional review board approval, patients scheduled to undergo supratentorial craniotomy were enrolled into this prospective, randomized, double-blind study. The patients were monitored for routine hemodynamic parameters, depth of anesthesia, and ICP...
July 31, 2017: Journal of Neurosurgical Anesthesiology
https://www.readbyqxmd.com/read/28762023/efficacy-of-goal-directed-fluid-therapy-via-pleth-variability-index-during-laparoscopic-roux-en-y-gastric-bypass-surgery-in-morbidly-obese-patients
#11
İsmail Demirel, Esef Bolat, Aysun Yıldız Altun, Mustafa Özdemir, Azize Beştaş
BACKGROUND: There is no well-recognized guideline for intraoperative fluid management in bariatric surgery. Goal-directed fluid therapy (GDFT) is a new concept of perioperative fluid management which was shown to improve patients' prognoses. Dynamic indicators may better predict fluid response compared to static indicators. In this study, we aimed to assess effects of administering GDFT protocol via Pleth Variability Index (PVI) in morbidly obese patients undergoing laparoscopic Roux-en-Y gastric bypass (RYGB) surgery...
July 31, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/28759054/the-association-between-retinal-vein-pulsation-pressure-and-optic-disc-haemorrhages-in-glaucoma
#12
Dong An, Philip House, Christopher Barry, Andrew Turpin, Allison M McKendrick, Balwantray C Chauhan, Siobhan Manners, Stuart L Graham, Dao-Yi Yu, William H Morgan
PURPOSE: To explore the potential relationship between optic disc haemorrhage, venous pulsation pressure (VPP), ocular perfusion pressures and visual field change in glaucomatous and glaucoma suspect eyes. MATERIALS AND METHODS: This prospective observational study examined 155 open angle glaucoma or glaucoma suspect eyes from 78 patients over 5 years. Patients were followed with 3 monthly non-mydriatic disc photographs, 6 monthly standard automated perimetry and annual ophthalmodynamometry...
2017: PloS One
https://www.readbyqxmd.com/read/28749608/prone-position-ventilation-support-for-acute-exacerbation-of-interstitial-lung-disease
#13
Yuanda Xu, Qingwen Sun, Yuheng Yu, Weibo Liang, Xuesong Liu, Chun Yang, Yonghao Xu, Lingbo Nong, Sibei Chen, Weiqun He, Xiaoqing Liu, Yimin Li, Nanshan Zhong
INTRODUCTION: Prone position ventilation (PPV) has been shown to improve oxygenation and decrease pulmonary vascular resistance and mortality in patients with severe acute respiratory distress syndrome (ARDS). Whether these benefits of PPV occur similarly in acute exacerbations of interstitial lung disease (ILD) is not clear. We retrospectively explored the use of PPV in acute exacerbation with ILD versus those with severe acute respiratory distress syndrome (severe ARDS). METHODS: Retrospective study of the application of PPV in 17 patients with acute exacerbations of ILD and in 19 patients with severe ARDS...
July 27, 2017: Clinical Respiratory Journal
https://www.readbyqxmd.com/read/28744885/water-infused-surface-protection-as-an-active-mechanism-for-fibrin-sheath-prevention-in-central-venous-catheters
#14
David W Sutherland, Xin Zhang, Joseph L Charest
Protein adhesion in central venous catheters (CVCs) leads to fibrin sheath formation, the precursor to thrombotic and biofilm-related CVC failures. Advances in material properties and surface coatings do not completely prevent fibrin sheath formation and post-formation treatment options are limited and expensive. We propose water infused surface protection (WISP), an active method for prevention of fibrin sheath formation on CVCs, which creates a blood-free boundary layer on the inner surface of the CVC, limiting blood contact with the CVC lumen wall...
July 26, 2017: Artificial Organs
https://www.readbyqxmd.com/read/28740394/a-case-of-iatrogenic-pneumothorax-in-which-chest-tube-placement-could-be-avoided-by-intraoperative-evaluation-with-transthoracic-ultrasonography
#15
Izumi Sato, Hirotsugu Kanda, Megumi Kanao-Kanda, Atsushi Kurosawa, Takayuki Kunisawa
We report a case of iatrogenic pneumothorax in which chest tube placement was avoided by continuous intraoperative evaluation with transthoracic ultrasonography. A 53-year-old man had undergone a subsegmentectomy. While attempting to place a central venous catheter in the right internal jugular vein after the induction of anesthesia, we identified gas absorption during the puncture and suspected a pneumothorax. Chest X-ray revealed an ~5-mm collapse of the right lung apex. Tension pneumothorax was a concern during surgery because of the long-term positive pressure ventilation, but we decided to start the operation without preventative chest tube placement...
2017: Therapeutics and Clinical Risk Management
https://www.readbyqxmd.com/read/28736994/intraoperative-hemodynamic-factors-predicting-early-postoperative-renal-function-in-pediatric-kidney-transplantation
#16
Daphné Michelet, Christopher Brasher, Lucile Marsac, Nabil Zanoun, Mona Assefi, Alaa Elghoneimi, Stephane Dauger, Souhayl Dahmani
BACKGROUND: The anesthetic management of kidney transplantation in children remains somewhat empirical. The goal of the present study was to investigate intraoperative hemodynamic factors affecting posttransplantation kidney function. METHODS: We performed a retrospective analysis of data from patients undergoing kidney transplantation in our pediatric teaching hospital from 2000 to 2014. Data collected included: donor and recipient demographic data, recipient comorbidities, fluids administered intraoperatively, and intraoperative blood pressure and central venous pressure...
September 2017: Paediatric Anaesthesia
https://www.readbyqxmd.com/read/28734854/pulse-pressure-variation-as-a-guide-for-volume-expansion-in-dogs-undergoing-orthopedic-surgery
#17
Denise T Fantoni, Keila K Ida, André M Gimenes, Matheus M Mantovani, Jacqueline R Castro, Geni C F Patrício, Aline M Ambrósio, Denise A Otsuki
OBJECTIVE: To investigate whether pulse pressure variation (PPV) can predict fluid responsiveness in healthy dogs during clinical surgery. STUDY DESIGN: Prospective clinical study. ANIMALS: Thirty-three isoflurane-anesthetized dogs with arterial hypotension during orthopedic surgery. METHODS: Fluid challenge with lactated Ringer's solution (15 mL kg(-1) in 15 minutes) was administered in mechanically ventilated dogs (tidal volume 10 mL kg(-1)) with hypotension [mean arterial pressure (MAP) < 65 mmHg]...
March 22, 2017: Veterinary Anaesthesia and Analgesia
https://www.readbyqxmd.com/read/28733213/risk-factors-for-the-infection-and-or-colonization-of-extended-spectrum-beta-lactamase-producing-bacteria-in-a-neonatal-intensive-care-unit-a-meta-analysis
#18
REVIEW
Xuan Li, Xuan Xu, Xianxian Yang, Mei Luo, Pin Liu, Kewen Su, Ying Qing, Shuai Chen, Jingfu Qiu, Yingli Li
BACKGROUND: Extended-spectrum beta-lactamase (ESBL)-producing bacteria are the important causes of healthcare associated infection in the neonatal intensive care unit (NICU). This study performed a meta-analysis to identify the risk factors associated with infection and/or colonization of ESBL-producing bacteria in the NICU. METHODS: Relevant studies in the literature published from January 1, 2000 to July 1, 2016 were searched in the electronic databases. The literature was screened and data were extracted according to the inclusion and exclusion criteria...
July 18, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28729382/recommended-clinical-trial-end-points-for-dialysis-catheters
#19
Michael Allon, Deborah J Brouwer-Maier, Kenneth Abreo, Kevin M Baskin, Kay Bregel, Deepa H Chand, Andrea M Easom, Leonard Mermel, Michele H Mokrzycki, Priti R Patel, Prabir Roy-Chaudhury, Surendra Shenoy, Rudolph P Valentini, Haimanot Wasse
Central venous catheters are used frequently in patients on hemodialysis as a bridge to a permanent vascular access. They are prone to frequent complications, including catheter-related bloodstream infection, catheter dysfunction, and central vein obstruction. There is a compelling need to develop new drugs or devices to prevent central venous catheter complications. We convened a multidisciplinary panel of experts to propose standardized definitions of catheter end points to guide the design of future clinical trials seeking approval from the Food and Drug Administration...
July 20, 2017: Clinical Journal of the American Society of Nephrology: CJASN
https://www.readbyqxmd.com/read/28729141/effects-of-transjugular-intrahepatic-portosystemic-shunt-tips-on-blood-volume-distribution-in-patients-with-cirrhosis
#20
Troels M Busk, Flemming Bendtsen, Jens H Henriksen, Stefan Fuglsang, Jens O Clemmesen, Fin S Larsen, Søren Møller
BACKGROUND: Cirrhosis is accompanied by portal hypertension with splanchnic and systemic arterial vasodilation, and central hypovolaemia. A transjugular intrahepatic portosystemic shunt (TIPS) alleviates portal hypertension, but also causes major haemodynamic changes. AIMS: To investigate effects of TIPS on regional blood volume distribution, and systemic haemodynamics. METHODS: Thirteen cirrhotic patients had their regional blood volume distribution determined with gamma-camera technique before and after TIPS...
June 27, 2017: Digestive and Liver Disease
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