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Volume management

Yuqing Sun, Di Wang, Daniel C W Tsang, Linling Wang, Yong Sik Ok, Yujie Feng
Shale gas extraction via horizontal drilling and hydraulic fracturing (HF) has enhanced gas production worldwide, which has altered global energy markets and reduced the prices of natural gas and oil. Water management has become the most challenging issue of HF, as it demands vast amounts of freshwater and generates high volumes of complex liquid wastes contaminated by diverse potentially toxic elements at variable rates. This critical review focuses on characterizing HF wastewater and establishing strategies to mitigate environmental impacts...
February 11, 2019: Environment International
N George Mikhaeel, Sarah A Milgrom, Stephanie Terezakis, Anne Kiil Berthelsen, David Hodgson, Hans Theodor Eich, Karin Dieckmann, Shu-Nan Qi, Joachim Yahalom, Lena Specht
Radiation therapy (RT) for the management of lymphomas has evolved over the past decades. Large extended or involved fields have been replaced by smaller involved site or nodal volumes. Currently, customized plans are created for each individual patient that encompass only the areas involved by disease. A critical factor that has enabled this shift in practice is the evolving use of imaging studies. Imaging plays a key role in patient selection, RT planning and delivery. The objective of this manuscript is to provide guidelines for best practice of use of imaging in pre-treatment evaluation, treatment choice, RT target volume definition, and RT treatment verification and delivery...
February 11, 2019: International Journal of Radiation Oncology, Biology, Physics
Bushra Rana, Shaun Robinson, Rajeevan Francis, Mark Toshner, Martin J Swaans, Sharad Agarwal, Ravi De Silva, Amer A Rana, Petros Nihoyannopoulos
Tricuspid regurgitation natural history and treatment remain poorly understood. Right ventricular function is a key factor in determining prognosis, timing for intervention and longer-term outcome. The right ventricle is a thin-walled chamber with a predominance of longitudinal fibres and a shared ventricular septum. In health, the low-pressure pulmonary circulation results in a highly compliant RV well equipped to respond to changes in preload but sensitive to even small alterations in afterload. In the first of two articles, discussion focuses on key principles of ventricular function assessment and the importance of right ventricular chamber size, volumes and ejection fraction, particularly in risk stratification in tricuspid regurgitation...
February 1, 2019: Echo Research and Practice
Thomas A A Skinner, Luke Witherspoon, Ali Dergham, Jeffery E Warren, James Watterson, Brian Blew
INTRODUCTION: Ureteropelvic junction obstruction (UPJO) is a condition characterized by partial or complete obstruction of urine transport from the renal pelvis to the ureter and can present with intermittent flank pain, recurrent urinary tract infections, renal stones, or renal dysfunction. While historically, open pyeloplasty was the gold standard for surgical management, laparoscopic methods to repair UPJO have largely taken over as the preferred approach for adolescent and adult patients...
January 21, 2019: Canadian Urological Association Journal, Journal de L'Association des Urologues du Canada
Eun-Ho Lee, Sung-Cheol Yun, Ye-Ji Lim, Jun-Young Jo, Dae-Kee Choi, In-Cheol Choi
We assessed whether perioperative fluid management with balanced solutions and a limited volume of hydroxyethyl starch (renal-protective fluid management [RPF] strategy) could improve renal outcomes after cardiovascular surgery.For this retrospective observational study, we evaluated 2613 patients who underwent cardiovascular surgery from January 1, 2010 to December 31, 2013. The control group were given intravenous fluids with saline-based solutions and unlimited volumes of hydroxyethyl starch solutions and the RPF group were given intravenous fluids with RPF...
February 2019: Medicine (Baltimore)
Sherif Kandil
PURPOSE OF REVIEW: Liver transplantation in patients with portopulmonary hypertension (POPH) is associated with increased perioperative risk. Important recent advances in the management of liver transplantation recipients with POPH are discussed. RECENT FINDINGS: The presence of POPH at the time of liver transplantation should not be a contraindication for liver transplantation, as POPH is common and may be related to volume overload and/or high cardiac output (CO)...
February 11, 2019: Current Opinion in Organ Transplantation
Yu Sun, Hayley M Reynolds, Bimal Parameswaran, Darren Wraith, Mary E Finnegan, Scott Williams, Annette Haworth
Multiparametric MRI (mpMRI) is an imaging modality that combines anatomical MR imaging with one or more functional MRI sequences. It has become a versatile tool for detecting and characterising prostate cancer (PCa). The traditional role of mpMRI was confined to PCa staging, but due to the advanced imaging techniques, its role has expanded to various stages in clinical practises including tumour detection, disease monitor during active surveillance and sequential imaging for patient follow-up. Meanwhile, with the growing speed of data generation and the increasing volume of imaging data, it is highly demanded to apply computerised methods to process mpMRI data and extract useful information...
February 14, 2019: Australasian Physical & Engineering Sciences in Medicine
Emrullah Beyazyıldız, Mehmet Çıtırık, Mert Şimşek, Özlem Beyazyıldız, İbrahim C Haznedaroğlu
Background/aim: The aim of this study is to study subclinical platelet activation by detecting three important platelet activation parameters of mean platelet volume (MPV), platelet distribution width (PDW), and plateletcrit (PCT) in patients with branch retinal vein occlusion (BRVO) in comparison to those in healthy control subjects. Materials and methods: This prospective study included 43 patients with BRVO (Group 1)and 40 control subjects (Group 2). The levels of MPV, PDW, and PCT were measured in both of the studied groups Results: The mean serum level of MPV value was 7...
February 11, 2019: Turkish Journal of Medical Sciences
V A Malkhasyan, I V Semenyakin, V Yu Ivanov, S O Sukhikh, N K Gadzhiev
To date, percutaneous nephrolithotomy (PNL) is the standard treatment modality for large-volume renal stones and staghorn stones in patients with urolithiasis. Despite low invasiveness, this method is not without complications. This review discusses the most common complications and suggests methods for their prevention and appropriate management. To unify the study of complications they were categorized based on the modified Clavien classification. According to the available data, about 80% of the PNL complications belong to grade I-II complications and does not require any additional treatment...
October 2018: Urologii︠a︡
A B Zhiborev, A G Martov
INTRODUCTION: Concurrent chronic prostatitis (CP) plays an important role in the pathogenesis and progression of benign prostatic hyperplasia (BPH), increasing the severity of lower urinary tract symptoms (LUTS), lowering the quality of life, and increasing the risk of acute urinary retention. However, in the management of patients with BPH, the role of CP is not always taken into account. AIM: To evaluate the effectiveness of integrated management of patients with CP and patients with co-occurring BPH and CP using a physiotherapeutic device Mavit for the treatment of inflammatory diseases of the prostate...
October 2018: Urologii︠a︡
M Yu Soluyanov, O A Shumkov, M A Smagin, V V Nimaev
This study aimed to evaluate the feasibility of the prostate artery embolization (PAE) in the management of patients with benign prostatic hyperplasia (BPH) in different age groups, depending on the severity of voiding dysfunction, findings of the prostate ultrasound, and the ASA surgical risk. MATERIALS AND METHODS: The study comprised 39 patients with grade II-III BPH. Patients were divided into three groups, depending on the prostate volume and the grade of anesthesia risk. Patients of the group 1 (n=12), group 2 (n=19), and group 3 (n=8) underwent a classical transvesical prostatic adenomectomy (TPA), bipolar transurethral resection (TUR) of the prostate, and PAE, respectively...
October 2018: Urologii︠a︡
Kenichiro Morisawa, Shigeki Fujitani, Yasuhiko Taira
Management of fluid therapy in an intensive care unit (ICU) tends to be volume restriction after initial fluid resuscitation, since it has been the consensus that volume overload is associated with complications and poor clinical outcomes. Aggressive volume administration without cautious monitoring should be avoided in the ICU, because it could lead to excessive volume administration. However, there are limited consensus on determining the completion of resuscitation phase, in other words, when to stop aggressive infusion and initiate infusion restriction...
2019: Journal of Intensive Care
Katsura Hayakawa
Background: This review is a "Pro-Con" discussion about the optimal fluid volume in critically ill patients in the intensive care unit (ICU). This article argues that fluids should be aggressively managed in critically ill patients. Main body: In recent years, restrictive fluid management has been thought to be beneficial for critically ill patients. Thus, to investigate whether fluid volumes have actually been restricted in practice, fluid volumes were compared between those used in the early goal-directed therapy (EGDT) study by Rivers et al...
2019: Journal of Intensive Care
Qin Lu, Sheng-Ming Wang, Yi-Xiao Liu, Hong Chen, Rui Zhang, Wen-Hui Zhang, Yuan-Yuan Zou, Jia-Wei Zhou, Xin-Yi Guo, Ying Zhang, Teng-Li Huang, Yu-Hang Liu, Si-Qi Zhang, Kyosuke Yamanishi, Hiromichi Yamanishi, Hideaki Higashino, Haruki Okamura
Successful prevention and treatment of hypertension depend on the appropriate combination of antihypertensive drug therapy and nondrug lifestyle modification. While most hypertension guidelines recommend moderate- to high-intensity exercise, we decided to explore a mild yet effective type of exercise to add to hypertension management, especially in populations with complications or frailty. After comparing the short-term cardiovascular effects of low-speed walking versus high-speed walking for 3 kilometers (km) (3 km/h versus 6 km/h) in young, healthy volunteers, we delivered low-speed walking (low-intensity walking, 2...
February 13, 2019: Acta Pharmacologica Sinica
Eu Chang Hwang, Jae Hung Jung, Michael Borofsky, Myung Ha Kim, Philipp Dahm
BACKGROUND: New, minimally invasive surgeries have emerged as alternatives to transurethral resection of the prostate (TURP) for the management of lower urinary tract symptoms (LUTS) in men with benign prostatic hyperplasia (BPH). Aquablation is a novel, minimally invasive, water-based therapy, combining image guidance and robotics for the removal of prostatic tissue. OBJECTIVES: To assess the effects of Aquablation for the treatment of lower urinary tract symptoms in men with benign prostatic hyperplasia...
February 13, 2019: Cochrane Database of Systematic Reviews
Zachary D Weller, Duck Keun Yang, Joseph C von Fischer
The data collected by mobile methane (CH4) sensors can be used to find natural gas (NG) leaks in urban distribution systems. Extracting actionable insights from the large volumes of data collected by these sensors requires several data processing steps. While these survey platforms are commercially available, the associated data processing software largely constitute a black box due to their proprietary nature. In this paper we describe a step-by-step algorithm for developing leak indications using data from mobile CH4 surveys, providing an under-the-hood look at the choices and challenges associated with data analysis...
2019: PloS One
Lan Lan, Jiayang Li, Xin Xu, Yanyi Cen
<strong>BACKGROUND</strong> One-lung ventilation under general anesthesia is necessary for most thoracic surgical procedures. However, adverse effects may derive from mechanical ventilation in emphysema patients. At present, lung volume reduction surgery under spontaneous ventilation may attenuate these adverse effects. <strong>CASE REPORT</strong> We present a case of left-side secondary spontaneous pneumothorax in a 71-year-old male who had a history of chronic obstructive pulmonary disease for 12 years, combined with a contralateral giant bulla...
January 30, 2019: American Journal of Case Reports
Amr Shaaban Hanafy, Mohamed A Bassiony, Mohammad Abd Alkhalik Basha
BACKGROUND: Medical treatment of decompensated cirrhosis due to hepatitis C virus (HCV) remains a clinical challenge even in the era of direct-acting antiviral drugs (DAAs). We evaluated the efficacy and safety of DAAs in the management of HCV genotype 4-related decompensated cirrhosis. METHODS: The study included a treatment group (n = 160) composed of HCV patients with decompensated cirrhosis who received DAAs for 3 months and a matched control group (n = 80) who preferred not to receive DAAs, follow-up was for 24-31 months...
February 13, 2019: Hepatology International
Brendan O'Connell, Nicholas Martin Wragg, Samantha Louise Wilson
Osteoarthritis (OA) is a degenerative disease involving joint damage, an inadequate healing response and progressive deterioration of the joint architecture that commonly affects the knee and/or hip joints. It is a major world public health problem and is predicted to increase rapidly with an ageing population and escalating rate of obesity. Autologous blood-derived products possess much promise in the repair and regeneration of tissue and have important roles in inflammation, angiogenesis, cell migration and metabolism in pathological conditions, including OA...
February 13, 2019: Cell and Tissue Research
Ming Xue, Xiwen Zhang, Feng Liu, Wei Chang, Jianfeng Xie, Jingyuan Xu, Yi Yang, Haibo Qiu
BACKGROUND: Intravenous crystalloid solutions are administered commonly for critically ill patients. We performed this meta-analysis of randomized trials with trial sequential analysis (TSA) to evaluate effects of chloride content of intravenous crystalloid solutions on clinical outcomes among critically ill adult patients. METHODS: Electronic databases were searched up to June 1, 2018, for randomized trials of use of balanced crystalloids versus 0.9% saline solutions in critically ill adult patients...
February 13, 2019: Annals of Intensive Care
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