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volume outcome relationship

Matt Williams, Peter Treasure, David Greenberg, Andrew Brodbelt, Peter Collins
BACKGROUND: There is evidence that surgeons who perform more operations have better outcomes. However, in patients with brain tumours, all of the evidence comes from the USA. METHODS: We examined all English patients with an intracranial neoplasm who had an intracranial resection in 2008-2010. We included surgeons who performed at least six operations over 3 years, and at least one operation in the first and last 6 months of the period. RESULTS: The analysis data set comprised 9194 operations, 163 consultant neurosurgeons and 30 centres...
October 20, 2016: British Journal of Cancer
Jinho Shin
Since the introduction of visit to visit blood pressure variability (VVBPV) for cardiovascular outcome, it has long been awaited for prospective intervention trial to reduce VVBPV for evidence based medicine. But because of several hurdles, most importantly, pending measure to reduce VVBPV, such trial may not be available in the near future. It means that current understanding on the VVBPV is not casual but related to the cardiovascular outcome.Waiting for more sound evidence, which can be remained in a clinician's mind struggling not to be indifferent for potential benefit? Firstly, the most important potential confounder in spite of the strict statistical analyses to be published may be the mean blood pressure...
September 2016: Journal of Hypertension
David John Webb
Treatment-resistant hypertension (TRH) is defined as the failure to achieve an office BP target of <140/90 mmHg (<130/80 mmHg in patients with chronic kidney disease (CKD) or diabetes) in patients with hypertension (HT), despite adherence to at least 3 antihypertensive medications at optimal tolerated doses, ideally including a diuretic (Calhoun et al., Circulation 2008). TRH identifies patients with hard-to-treat HT, who might benefit from specialist investigation and treatment. Although some studies put the prevalence of TRH as >10%, these levels may be inflated by white-coat hypertension and poor adherence...
September 2016: Journal of Hypertension
Kipp Slicker, Wesley G Lane, Ola O Oyetayo, Laurel A Copeland, Eileen M Stock, Jeffrey B Michel, John P Erwin
BACKGROUND: Over 1,000,000 cardiac catheterizations (CC) are performed annually in the United States. There is a small risk of complication that has persisted despite advances in technology. It is unknown whether daily CC procedural volume can influence this risk. In an effort to improve outcomes at our academic medical center, we investigated the relationship between daily CC volume and complication rates. METHODS: We obtained data from both the National Cardiovascular Data Registry (NCDR) Cath-PCI and Lumedx© databases reviewing the records of patients undergoing scheduled, non-emergent CC at our facility between January 2005 to June 2013...
October 2016: Cardiovascular Diagnosis and Therapy
Lijun Ma, Steve E Braunstein, Philip V Theodosopoulos, Michael W McDermott, Penny K Sneed
PURPOSE: Various cochlear dose surrogates have been reported as associated with hearing outcome in studies of stereotactic radiosurgery (SRS) for vestibular schwannomas. In this study, we investigated whether an inherent functional relationship exists among these reported surrogates. METHODS AND MATERIALS: A cohort of 85 serial patient cases treated with single-fraction stereotactic radiosurgery from 1997 through 2013 at our institution was analyzed. For all the cases, the mean prescription dose was 12...
August 20, 2016: Practical Radiation Oncology
Huan Xu, Chong Liu, Meng Gu, Yanbo Chen, Zhikang Cai, Qi Chen, Zhong Wang
PURPOSE: To evaluate the relationship between prostatic vessel changes induced by cigarette smoking and the perioperative outcome of holmium laser enucleation of the prostate (HoLEP). MATERIALS AND METHODS: A total of 268 postoperative patients with benign prostatic hyperplasia (BPH) were prospectively analysed in our department. They were divided into two groups (smokers and non-smokers) according to smoking history. Transrectal colour Doppler ultrasound was performed to evaluate the prostate vascular changes...
October 9, 2016: Oncotarget
Marenza Leo, Teresa Mautone, Ilaria Ionni, Maria Antonietta Profilo, Elena Sabini, Francesca Menconi, Barbara Mazzi, Roberto Rocchi, Francesco Latrofa, Marco Nardi, Paolo Vitti, Claudio Marcocci, Michele Marinò
OBJECTIVE: Intravenous (iv) glucocorticoids (GC) (ivGC) are used for active Graves orbitopathy (GO), but factors affecting GO outcome are poorly understood. We performed a retrospective study to investigate the variables affecting GO after ivGC. METHODS: We evaluated 83 consecutive GO patients treated with ivGC but not orbital radiotherapy (ORT) and re-examined them after a median of 47 months. The endpoints were the relationships between GO outcome or additional treatments with age, sex, smoking habits, thyroid volume, thyroid treatment, time since thyroid treatment, antithyroid-stimulating hormone receptor antibodies (TRAb), GO duration, GO features, and follow-up time...
October 2016: Endocrine Practice
A B Murphy, Y A Nyame, K Batai, R Kalu, A Khan, P Gogana, M Dixon, V Macias, A Kajdacsy-Balla, C M P Hollowell, W J Catalona, R Kittles
OBJECTIVES: Recent studies demonstrate vitamin D is inversely correlated with BPH and prostate cancer (PCa) incidence. We aim to clarify the associations of vitamin D with prostate volume. METHODS: This is an observational study investigating the associations of serum PSA, PSA density and prostate volume with serum 25-hydroxyvitamin D (25-OH D) in PCa patients and men with negative biopsies seen in outpatient urology clinics in Chicago, IL, USA. There were 571 men (40-79 years old) with elevated PSA or abnormal digital rectal examination with available prostate volume recorded from initial biopsy...
October 11, 2016: Prostate Cancer and Prostatic Diseases
Chung Jen Lin, Jen Tsung Yang, Yen Chu Huang, Yuan Hsiung Tsai, Ming Hsueh Lee, Meng Lee, Cheng Ting Hsiao, Kuang Yu Hsiao, Leng Chieh Lin
BACKGROUND: Dehydration is associated with acute ischemic stroke. However, the relationship between hydration therapy given during acute ischemic stroke and clinical outcomes remains unclear. AIMS: We determined whether hydration therapy in patients with a blood urea nitrogen/creatinine (BUN/Cr) ratio of at least 15 improved clinical outcome. METHODS: We conducted a nonblinded, phase II, single-arm, prospective study of patients with acute ischemic stroke and BUN/Cr ratio of at least 15 with historical controls...
September 17, 2016: American Journal of Emergency Medicine
Michał Kowara, Kajetan Grodecki, Zenon Huczek, Dominika Puchta, Katarzyna Paczwa, Bartosz Rymuza, Karol Zbroński, Krzysztof J Filipiak, Grzegorz Opolski
BACKGROUND: Platelets' role in pathophysiology of acute coronary syndromes (ACS) is undeniable, but precise relationships between platelet activity and treatment outcomes are matter of continuant investigation. Among platelet indices, mean platelet volume (MPV) has proven to be valuable predicting factor in cardiac patients. However platelet distribution width (PDW) is reported to be more specific marker of platelet reactivity. Thus, application of PDW in risk stratification of ACS treatment is up-to-date subject of research...
October 7, 2016: Kardiologia Polska
Sarah M Szymkowicz, Molly E McLaren, Andrew O'Shea, Adam J Woods, Stephen D Anton, Vonetta M Dotson
AIM: Major depression is associated with hippocampal volume changes, especially in late-life depression. These changes usually consist of volume reductions, but depression-related increases in hippocampal volume have also been reported. Subfield analysis has identified structural changes primarily in the cornu ammonis (CA) 1, CA2-3 and subiculum of the hippocampus in individuals with major depression; however, it is unclear whether lower levels of depressive symptoms are also associated volume reduction, or if depressive symptoms interact with age to impact hippocampal subfields...
October 2, 2016: Geriatrics & Gerontology International
Kenneth Chew, Kate Carey, Genevieve Ho, Kylie-Ann Mallitt, John Widger, Michelle Farrar
BACKGROUND: The multidisciplinary care of Duchenne muscular dystrophy (DMD) incorporates management of nutrition and the respiratory system, however the effect of body habitus on respiratory function in DMD is poorly understood. The present study examined the impact of nutritional status on respiratory function in DMD to guide further treatment strategies. METHODS: Anthropometric and respiratory parameters, such as body mass index (BMI) z-scores, forced vital capacity (FVC) and forced expiratory volume in one second (FEV1) were retrospectively analysed with a mixed linear model in 34 DMD patients...
October 2016: Respiratory Medicine
Lise N Tchouta, Henry S Park, Daniel J Boffa, Justin D Blasberg, Frank C Detterbeck, Anthony W Kim
BACKGROUND: The positive impact of hospital operative volume on outcomes following video-assisted thoracoscopic surgery has been established. The goal of this study was to determine whether or not this volume-outcome relationship translates to robotic-assisted thoracoscopic surgery (RobATS) lobectomy. METHODS: Patients who underwent RobATS lobectomy were identified between 2008 and 2013 in the Healthcare Cost and Utilization Project National Inpatient Sample (HCUP-NIS) database...
September 26, 2016: Chest
Won-Jung Shin, Jun-Gol Song, In-Gu Jun, Young-Jin Moon, Hye-Mee Kwon, Kyeowoon Jung, Seon-Ok Kim, Gyu-Sam Hwang
BACKGROUND AND AIMS: Ventriculo-arterial coupling (VAC) reflects the interaction between ventricular performance and effective arterial load. Current criteria for cirrhotic cardiomyopathy focus only on cardiac function without addressing the effect of hyperdynamic, low-resistance circulation. We investigated alterations in VAC in cirrhotic patients and their associations with post-liver transplant all-cause mortality. METHODS: In this single institution cohort study, cirrhotic patients who underwent liver transplantation (LT) (n = 914) were retrospectively compared with healthy matched controls using noninvasively measured end-systolic ventricular elastance (Ees), arterial elastance (Ea), and VAC (Ea/Ees)...
September 26, 2016: Journal of Hepatology
T Nishigori, H Miyata, H Okabe, Y Toh, H Matsubara, H Konno, Y Seto, Y Sakai
BACKGROUND: Previous studies have reported that patients undergoing oesophagectomy in high-volume hospitals experience lower mortality rates. However, there has been ongoing discussion regarding the validity of evidence for this association. The purpose of this study was to investigate the relationship between hospital volume and risk-adjusted mortality following oesophagectomy in Japan, using a nationwide web-based database. METHODS: The study included patients registered in the database as having undergone oesophagectomy with reconstruction between 2011 and 2013...
September 29, 2016: British Journal of Surgery
Suzanne M Boyle, Yimei Li, F P Wilson, Joel D Glickman, Harold I Feldman
♦ Background: Total body water (V) is an imprecise metric for normalization of dialytic urea clearance (Kt). This poses a risk of early mortality/technique failure (TF). We examined differences in the distribution of peritoneal Kt/V when V was calculated with actual weight (AW), ideal weight (IW), and adjusted weight (ADW). We also examined the associations of these Kt/V measurements, Kt/body surface area (BSA), and non-normalized Kt with mortality and TF. ♦ Methods: This is a retrospective cohort study of 534 incident peritoneal dialysis (PD) patients from the Dialysis Morbidity and Mortality Study Wave 2 linked with United States Renal Data System through 2010...
September 28, 2016: Peritoneal Dialysis International: Journal of the International Society for Peritoneal Dialysis
Armin Zittermann, Andreas Koster, David Faraoni, Jochen Börgermann, Uwe Schirmer, Jan F Gummert
OBJECTIVES: The relationship between the transfusion of red blood cell (RBC) units and outcomes in patients undergoing cardiac surgery is the subject of intense debates. In this study, we investigated the relationship between the transfusion of 1-2 leucocyte-depleted (LD) RBC units and outcomes in patients undergoing open-heart valve surgery. METHODS: The investigation encompassed consecutive patients undergoing open-heart valve surgery at our institution between July 2009 and March 2015 who received no (RBC- group) or 1-2 units of LD RBC (RBC+ group)...
September 27, 2016: Interactive Cardiovascular and Thoracic Surgery
Xin He, Hui Li, YiBin Meng, YunFei Huang, Ding-Jun Hao, QiNing Wu, JiJun Liu
BACKGROUND: Percutaneous kyphoplasty (PKP) could achieve rapid pain relief for older patients with osteoporotic vertebral compression fractures (OVCFs). Bone cement in PKP was the key factor keeping the stabilization of the vertebral body. However, the same amount of cement can distribute differently in a vertebral body and can thereby result in different surgery outcomes. Therefore, the volume and distribution of bone cement should be considered as 2 distinct variables to evaluate the effectiveness of PKP...
September 2016: Pain Physician
C Hadzitheodorou, S Kim, W Zou, S K Jabbour
No abstract text is available yet for this article.
October 1, 2016: International Journal of Radiation Oncology, Biology, Physics
C Schroeder, R Engenhart-Cabillic, A Buchali
No abstract text is available yet for this article.
October 1, 2016: International Journal of Radiation Oncology, Biology, Physics
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