bluuebunny/crossref_metadata_2025_split huggingface dataset:
Early mortality in elderly patients undergoing treatment for multiple myeloma in real-world practice
Authors: Xia Jun , Wang Lingling , Zhou Xin , Wang Jing , Wang Huan , Guo Hongfeng 
Published: March 2018

Objectives This study was performed to analyze the risk factors for early mortality (EM) in elderly patients undergoing treatment for multiple myeloma (MM) in real-world clinical practice. Methods Retrospective data from 108 elderly patients who were newly diagnosed with MM from January 2007 to July 2015 were analyzed in a single hematology center. EM was defined as death of any cause within 12 months after diagnosis. A multivariate regression model was used to evaluate EM. Results EM occurred in 16 (14.8%) elderly patients with newly diagnosed MM. The most common cause of death was infection (10/16, 62.5%). In the multivariate analysis, only an age of ≥75 years, International Staging System (ISS) stage III disease, and high lactate dehydrogenase concentration were significantly and independently associated with EM. Conclusion Our results suggest that infection is the leading cause of EM in elderly patients with MM. An age of ≥75 years, ISS stage III disease, and a high lactate dehydrogenase concentration are significant predictors of EM. We should further target this higher-risk patient population to define personalized therapy with which to improve outcomes.
Corrected QT interval prolongation during anesthetic induction for laryngeal mask airway insertion with or without cisatracurium
Authors: Xuan Chengluan , Wu Nan , Li Yanhui , Sun Xiaoting , Zhang Qunshu , Ma Haichun 
Published: March 2018

Objective This study was performed to observe the occurrence of corrected QT (QTc) interval prolongation during anesthetic induction for laryngeal mask airway insertion and the effects of cisatracurium administration on the QTc interval. Methods Eighty-eight patients were assigned to two groups: the cisatracurium administration group (n = 45) and non-cisatracurium administration group (n = 43). The QTc interval was continuously recorded by a 12-lead Holter electrocardiogram beginning in the hospital ward and continuing until after anesthetic induction. Results In the cisatracurium administration group, the QTc interval significantly increased from 417.9 ± 27.9 to 451.6 ± 32.5 ms after arrival in the operating room and significantly decreased to 432.4 ± 32.5 ms after a 15-minute rest; it significantly increased to 459.7 ± 23.8 ms again after propofol and fentanyl injection. However, the QTc interval decreased after cisatracurium injection. In the non-cisatracurium administration group, the QTc interval initially showed changes similar to those in the cisatracurium group until fentanyl and propofol were injected. Conclusions The QTc interval was significantly prolonged on arrival in the operating room and after propofol and fentanyl injection. The QTc interval did not significantly change by laryngeal mask airway insertion regardless of the administration of cisatracurium.
Acute prevertebral abscess secondary to intradiscal oxygen–ozone chemonucleolysis for treatment of a cervical disc herniation
Authors: Yang Chun-Sheng , Zhang Lin-Jie , Sun Zhi-Hua , Yang Li , Shi Fu-Dong 
Published: March 2018

Objective We herein present a case involving a prevertebral abscess complicated by a spinal epidural abscess (SEA) secondary to intradiscal oxygen–ozone chemonucleolysis for treatment of a cervical disc herniation. Methods A 67-year-old woman with a history of intradiscal oxygen–ozone chemonucleolysis developed numbness and weakness in her right upper and bilateral lower extremities followed by urinary retention. Her symptoms did not respond to intravenous antibiotics alone. Magnetic resonance imaging of the cervical region revealed an extensive SEA anterior to the spinal cord, spinal cord myelopathy due to anterior compression by the lesion, and a prevertebral abscess extending from C2 to T1. She underwent surgical drainage and irrigation. Results The patient was successfully treated with surgical drainage and systemic antibiotic therapy without kyphosis. Streptococcus intermedius was detected within the abscess. All clinical symptoms except for the sensory deficit in the left leg were relieved. Conclusions The safety of intradiscal oxygen–ozone therapy requires further assessment. High-dose intravenous antibiotics should be initiated empirically at the earliest possible stage of prevertebral and epidural abscesses. Surgical drainage may be a rational treatment choice for patients with a prevertebral abscess complicated by an SEA and spinal cord myelopathy.
Musculoskeletal Screening Tests and Bony Hip Morphology Cannot Identify Male Professional Soccer Players at Risk of Groin Injuries: A 2-Year Prospective Cohort Study
Authors: Mosler Andrea B. , Weir Adam , Serner Andreas , Agricola Rintje , Eirale Cristiano , Farooq Abdulaziz , Bakken Arnhild , Thorborg Kristian , Whiteley Rod J. , Hölmich Per , Bahr Roald , Crossley Kay M. 
Published: March 2018

Background: Musculoskeletal hip/groin screening tests are commonly performed to detect at-risk individuals. Bony hip morphology is considered a potential intrinsic risk factor but has not been examined prospectively. Purpose: To evaluate the association between intrinsic risk factors identified from musculoskeletal and radiographic screening tests and hip/groin injuries leading to time loss from training and/or match play in professional male soccer players. Study Design: Prospective cohort study; Level of evidence, 2. Methods: Male professional soccer players, aged ≥18 years, underwent screening specific for hip/groin pain during 2 consecutive seasons of the Qatar Stars League. The screening battery included pain provocation, range of motion, and strength tests as well as a hip radiographic examination. The radiographic examination included an anteroposterior pelvic view and 45° Dunn view, with bony hip morphology determined using quantitative methods. Time-loss (≥1 day) hip/groin injuries and individual player exposure (training and match play) were recorded prospectively, and injuries were categorized as adductor-related, inguinal-related, iliopsoas-related, pubic-related, or hip-related groin pain, or “other,” as recommended in the Doha agreement. We calculated hazard ratios (HRs) from univariate and multivariate Cox regression models to assess the relationship between potential risk factors and hip/groin injuries. Results: There were 438 players, completing 609 player seasons, and 113 hip/groin injuries that met the criteria for inclusion, with 85 injuries categorized as adductor-related. The proportion of players with bony morphological variants was the following: cam, 71%; pincer, 5%; and acetabular dysplasia, 13%. Previous hip/groin injuries (HR, 1.8; 95% CI, 1.2-2.7) and eccentric adduction strength were associated with the risk of hip/groin injuries. Higher (>1 SD above the mean) than normal eccentric adduction strength was associated with an increased risk for all hip/groin injuries (HR, 1.6; 95% CI, 1.0-2.5). Lower (<1 SD below the mean) than normal eccentric adduction strength was associated with an increased risk for adductor-related injuries (HR, 1.7; 95% CI, 1.0-3.0). No other musculoskeletal screening test or bony hip morphology variables were associated with the injury risk. Conclusion: Previous groin injuries and eccentric adduction strength were associated with the risk of groin injuries. However, these associations were not strong enough to identify an “at-risk” individual, and therefore, musculoskeletal screening tests were not useful to dictate individualized prevention strategies. Bony hip morphology was not associated with the risk of groin injuries.
Impact of Neonatal Intensive Care Unit Admission on Bacterial Colonization of Donated Human Milk
Authors: Elmekkawi Amir , O’Connor Deborah L. , Stone Debbie , Yoon Eugene W. , Larocque Michael , McGeer Allison , Unger Sharon 
Published: March 2018

Background: Unpasteurized human donor milk typically contains a variety of bacteria. The impact of neonatal intensive care unit (NICU) admission of the donor’s infant and duration of lactation on bacterial contamination of human milk is unknown. Research aim: This study aimed (a) to describe the frequency/concentration of skin commensal bacteria and pathogens in unpasteurized human donor milk and (b) to assess the impact of NICU admission and (c) the duration of milk expression on bacterial colonization of donated milk. Methods: The authors conducted a retrospective cohort study of human milk donated to the Rogers Hixon Ontario Human Milk Bank from January 2013 to June 2014. Milk samples from each donor were cultured every 2 weeks. Results: The study included 198 donor mothers, of whom 63 had infants admitted to the NICU. Of 1,289 cultures obtained, 1,031 (80%) had detectable bacterial growth and 363 (28%) yielded bacterial growth in excess of 107 cfu/L, a local threshold for allowable bacteria prior to pasteurization. The mean (standard deviation) donation period per donor was 13.0 (7.5) weeks. Milk from mothers with NICU exposure had significantly higher concentrations of commensals, but not pathogens, at every time period compared with other mothers. For every 1-month increase in donation from all donors, the odds ratio of presence of any commensal in milk increased by 1.13 (95% confidence interval [1.03, 1.23]) and any pathogen by 1.31 (95% confidence interval [1.20, 1.43]). Conclusion: Commensal bacteria were more abundant in donor milk expressed from mothers exposed to neonatal intensive care. Bacterial contamination increased over the milk donation period.
Importance of the integrated test in the Down’s syndrome screening algorithm
Authors: Springer Drahomira , Loucky Jaroslav , Tesner Pavel , Cutka David , Stejskal David , Gregor Vladimir , Zima Tomas 
Published: March 2018

Objective In the Czech Republic, over 97% of all pregnant women undergo some type of antenatal screening for Down’s syndrome. In about 95% of cases with a confirmed fetal chromosomal abnormality, the pregnancy is terminated. The most commonly used test is the first trimester combined test. We investigated the impact of implementing an integrated sequential test to improve the detection of Down’s syndrome pregnancies. Methods Data on the incidence of congenital defects, number of births, and affected pregnancies terminated are recorded in the National Registry of Congenital Anomalies. Anonymous data on cases of Down’s syndrome diagnosed antenatally or postnatally between 2010 and 2015 in one of the large antenatal care centers were analyzed. Results There were 600 diagnoses of Down’s syndrome (5.7 per 1000 births), 90% of which were made antenatally. Of antenatally detected cases, 80% were indicated for diagnostic procedure by multimarker screening results. In the multimarker screen positive group, 75% cases were first trimester positive and 25% second trimester positive (most of these had positive integrated test results). Among Down’s syndrome cases indicated for antenatal diagnosis by multimarker screening results 6.25% (n = 26) were first trimester negative, and became positive after integration with the second trimester screening results. Conclusions Results from five major Czech antenatal centers confirm that an integrated sequential test would detect 80–85% of Down’s syndrome fetuses in the first trimester and at least an extra 5–10% of Down’s syndrome pregnancies in the second trimester of pregnancy. These are important data that should be considered in implementing the national antenatal screening program.
Distribution of keratometry and its determinants in a general population of 6- to 12-year-old children
Authors: Hashemi Hassan , Saatchi Mohammad , Khabazkhoob Mehdi , Emamian Mohammad Hassan , Yekta Abbasali , Fotouhi Akbar 
Published: March 2018

Purpose: To determine the distribution of keratometry and its determinants in Iranian school children. Methods: The present cross-sectional study was conducted in 2015 in Shahroud in the north of Iran. The entire rural population of elementary school children was invited to the study. In urban areas, cluster sampling was conducted. Pentacam HR (Oculus Inc., Lynnwood, WA) was used to measure the flat meridian, the steep meridian, and the mean keratometry. Linear regression was used to determine the associated variables with mean keratometry. Results: Of 5620 participated in the study, 5559 children were analyzed after applying the exclusion criteria. Mean keratometry was 43.56 ± 1.96 diopters (D) (95% confidence interval = 43.48–43.64) in the total sample, 43.18 ± 2.23 D (95% confidence interval = 43.09–43.26) in boys, and 44.01 ± 1.46 D (95% confidence interval = 43.95–44.07) in girls (p < 0.001). The highest and lowest mean keratometry was 43.28 ± 1.66 D (95% confidence interval = 43.00–43.55) and 42.89 ±2.70 D (95% confidence interval = 42.68–43.11) in 6-year-old and 10-year-old children, respectively (p = 0.031). The results of multiple linear regression showed that mean keratometry in girls was 0.82 D higher than in boys (p < 0.001), and in groups older than 9 years, it was significantly decreased. Mean keratometry in myopic children was 0.62 D higher than emmetropic children (p < 0.001). Conclusion: This study provided valuable findings from the status of keratometry in Iranian children. In line with other studies, corneal power was higher in girls than in boys, and the cornea becomes flatter with age in children.
Ocular surface changes in recurrent pterygium cases post-operatively treated with 5-fluorouracil subconjunctival injections
Authors: García Tirado Amanda , Boto de los Bueis Ana , Rivas Jara Luis 
Published: March 2018

Introduction: To investigate the ocular surface changes occurring in eyes with recurrent pterygium post-operatively treated with 5-fluorouracil intralesional injections. Methods: Retrospective observational study of recurrent pterygium cases treated with weekly intralesional injections of 0.1 mL (5 mg) of 5-fluorouracil (10 injections). Impression cytology samples taken from the lesion, the healthy conjunctivae (inferior, superior, and contralateral to injury), and the cornea before and after treatment were analyzed. Clinical ocular characteristics (including Schirmer’s test and break-up time) were evaluated during treatment. Results: A total of 15 eyes were treated, with the mean follow-up of 27 ± 8.7 months (mean ± standard deviation). Prior to treatment initiation, the ocular surface citology over the pterygium was found to be abnormal. No epithelial cells (27%) and a lower goblet cell density (73%) compared to the healthy conjunctivae (p < 0.01) were found. Squamous metaplasia was observed to some degree in the cornea (100%), pterygium (81%) and healthy conjunctivae (73%). Following treatment, pterygium composition had changed: epithelial cell number (100%) and goblet cell density (47%) had increased (p < 0.05). Goblet cell density was also increased in healthy conjunctivae (67%; p < 0.05). The degree of squamous metaplasia decreased in the cornea (67%), pterygium (45%), and healthy conjunctivae (60%; p < 0.05). No adverse effects were reported, recurrence progression was arrested, and conjunctival redness and dry-eye severity level were decreased in all cases (p < 0.01). Discussion: The cytology of ocular surface in recurrent pterygium is abnormal. After weekly intralesional 5-fluorouracil injections, it tends to normalize. The 5-fluorouracil compound is a safe and effective treatment to prevent pterygium recurrence.
Diameter of inflow as a predictor of radiocephalic fistula flow
Authors: Kairaitis Lukas K , Collett James P , Swinnen Jan 
Published: March 2018

Introduction: The optimal method for vascular access surveillance is largely unknown. A previous case–control study suggested a simplified anatomical measure obtained by Doppler ultrasound—the narrowest segment of the circuit or “minimal luminal diameter” may identify patients with a dysfunctional radiocephalic arteriovenous fistula. The relationship between minimal luminal diameter and access flow (Qa) in the radiocephalic arteriovenous fistula has not previously been studied. Methods: Patients undergoing Doppler ultrasound of a radiocephalic arteriovenous fistula over an 8-month period were identified retrospectively. Minimal luminal diameter was identified and demographic and clinical data were collected. Qa was estimated by Doppler estimation of brachial artery flow. The relationship between minimal luminal diameter and Qa was examined by correlation and using different levels of minimal luminal diameter as a simplified measure to detect or exclude low Qa (<600 mL/min). Results: A total of 81 Doppler ultrasound scans were performed. In all, 26 scans demonstrated brachial artery flow <600 mL/min. Simple logistic regression indicated a weak statistical relationship between the minimal luminal diameter and Qa (R2 = 0.27, p < 0.01). Minimal luminal diameter performed poorly as a marker of low Qa with low specificity, however, showed high negative predictive value for ruling out low Qa at a minimal luminal diameter of 3.2 mm or higher (94%). Qa estimated by brachial artery flow correlated well with Qa estimated by indicator dilution (R2 = 0.83, p < 0.01) without significant mean difference or proportional bias. Conclusion: Minimal luminal diameter correlates weakly with Qa. Low minimal luminal diameter values should not be used in isolation to determine low Qa for a radiocephalic arteriovenous fistula. Conversely, minimal luminal diameter >3.2 mm largely excludes a low-flow radiocephalic arteriovenous fistula in this cohort. Brachial artery flow is a reasonable measure of Qa in comparison with indicator dilution.
Peripheral nerve injury increases contribution of L-type calcium channels to synaptic transmission in spinal lamina II: Role of α2δ–1 subunits
Authors: Alles Sascha RA , Garcia Esperanza , Balasubramanyan Sridhar , Jones Karen , Tyson John R , Joy Twinkle , Snutch Terrance P , Smith Peter A 
Published: March 2018

Background Following peripheral nerve chronic constriction injury, the accumulation of the α2δ–1 auxiliary subunit of voltage-gated Ca2+ channels in primary afferent terminals contributes to the onset of neuropathic pain. Overexpression of α2δ–1 in Xenopus oocytes increases the opening properties of Cav1.2 L-type channels and allows Ca2+ influx at physiological membrane potentials. We therefore posited that L-type channels play a role in neurotransmitter release in the superficial dorsal horn in the chronic constriction injury model of neuropathic pain. Results Whole-cell recording from lamina II neurons from rats, subject to sciatic chronic constriction injury, showed that the L-type Ca2+ channel blocker, nitrendipine (2 µM) reduced the frequency of spontaneous excitatory postsynaptic currents. Nitrendipine had little or no effect on spontaneous excitatory postsynaptic current frequency in neurons from sham-operated animals. To determine whether α2δ–1 is involved in upregulating function of Cav1.2 L-type channels, we tested the effect of the α2δ–1 ligand, gabapentin (100 µM) on currents recorded from HEK293F cells expressing Cav1.2/β4/α2δ–1 channels and found a significant decrease in peak amplitude with no effect on control Cav1.2/β4/α2δ–3 expressing cells. In PC-12 cells, gabapentin also significantly reduced the endogenous dihydropyridine-sensitive calcium current. In lamina II, gabapentin reduced spontaneous excitatory postsynaptic current frequency in neurons from animals subject to chronic constriction injury but not in those from sham-operated animals. Intraperitoneal injection of 5 mg/kg nitrendipine increased paw withdrawal threshold in animals subject to chronic constriction injury. Conclusion We suggest that L-type channels show an increased contribution to synaptic transmission in lamina II dorsal horn following peripheral nerve injury. The effect of gabapentin on Cav1.2 via α2δ–1 may contribute to its anti-allodynic action.
Novel App- and Web-Supported Diabetes Prevention Program to Promote Weight Reduction, Physical Activity, and a Healthier Lifestyle: Observation of the Clinical Application
Authors: Arens Johann H. , Hauth Wolfgang , Weissmann Joerg 
Published: March 2018

Background: The increasing incidence of type 2 diabetes mellitus presents as a tsunami of health problems and health care costs. Preventing this development needs to target the underlying rise in metabolic syndrome cases through obesity and unhealthy lifestyle. Obesity is frequently perceived as a social issue with implicit psychological strain; health apps/weight-reduction programs are mushrooming from this side. The present program intends to bring weight reduction into the hands of HCPs by utilizing advanced digital technology. Methods: The prospective observational study analyzed 166 patients with metabolic syndrome as treated for weight reduction in 23 medical practices in Germany. Two approaches were observed: usual care (UC; n = 57) and a personalized health management program (PHM; n = 109). Key for PHM was the interaction between HCP and patient: reinforcing lifestyle changes through personalized goals and HCP-feedback via app- and web-based communication. Comparing PHM/UC was based on a time-to-success (5% weight reduction) analysis by Cox regression. Further exploratory analyses addressed the comparison of achievers and nonachievers. Results: Cox regression adjusted for sex, age, and BMI revealed a chance ratio for weight reduction of 6.2 (2.4-16.2, p = .0003) favoring PHM. Expected success rates were 44.8% for PHM, 11.5% for UC. PHM achievers reduced their weight by 8.0% and lowered their BMI by 2.7 points. Motivation for lifestyle changes represented a key for success. Conclusions: The approach of enhanced interaction of HCPs and patients via app- and web-based communication was a clear success and delivered favorable responder rates. Treating obesity from a medical viewpoint will help to deepen the motivation for changing lifestyles. The study represents a cornerstone for a wider scoped application of these novel digital health approaches.
Shared Care Models in the Treatment of Pediatric Attention-Deficit/Hyperactivity Disorder (ADHD)
Authors: Sultan Meshal A. , Pastrana Carlos S. , Pajer Kathleen A. 
Published: March 2018

Objectives: The aim of this review is to evaluate the effectiveness of shared/collaborative care between mental health-care providers and primary care providers (PCPs) on the outcomes of children and adolescents with attention-deficit/hyperactivity disorder (ADHD). This evaluation will be very helpful in the allocation of ADHD resources for models with the strongest evidence. Methods: Using the Preferred Reporting Items for Systematic Review and Meta-analysis statement, we searched for randomized controlled trials, cohort, case–control, and cross-sectional studies on shared/collaborative care models in the treatment of ADHD. Using MEDLINE, PsycINFO, and CENTRAL databases from January 2000 to December 2016, we retrieved English language articles for review. The validation search identified 75 records. Five studies met the inclusion criteria and were analyzed in this systematic review. There were insufficient data for a meta-analysis. The included studies involved 655 children and adolescents who had a diagnosis of ADHD. The Cochrane Collaboration’s tool for assessing risk of bias was used to estimate bias. Results: Overall, the results show that the effects of shared/collaborative care models were small to moderate (effect size: 0.1-0.6, P = .04) on symptom rating scales, but all positively affected functional outcomes (effect size: 0.3-0.7, P = .04-.01). The data indicated that the models were associated with increased PCPs’ comfort levels, but the evidence for increased capacity for diagnosing and managing ADHD was weaker. Conclusions: This review concludes that the current studies do not show strong evidence for the outcome of collaboration between PCPs and mental health professionals on ADHD management. Future research should consider providing education to PCPs on management guidelines prior to conducting the trials, and more innovation is needed to discover methods of collaboration that affect the direct care of ADHD.