bluuebunny/crossref_metadata_2025_split huggingface dataset:
A 78-year-old female with severe tongue pain: benefit of modern ultrasound
Authors: Burg Lara Clarissa , Schmidt Wolfgang Andreas , Brossart Peter , Reinking Katharina Isabell , Schützeichel Franziskus Maria , Finger Robert Patrick , Schäfer Valentin Sebastian 
Published: March 2021

Abstract
Background
Giant cell arteritis (GCA) is the most common form of systemic vasculitis in persons aged 50 years and older. Medium and large vessels, like the temporal and axillary arteries, are commonly affected. Typical symptoms are headache, scalp tenderness, jaw claudication and ophthalmological symptoms as loss of visual field, diplopia or amaurosis due to optic nerve ischemia. Tongue pain due to vasculitic affection of the deep lingual artery can occur and has so far not been visualized and followed up by modern ultrasound.

Case presentation
We report the case of a 78-year-old woman with typical symptoms of GCA, such as scalp tenderness, jaw claudication and loss of visual field, as well as severe tongue pain. Broad vasculitic affection of the extracranial arteries, vasculitis of the central retinal artery and the deep lingual artery could be visualized by ultrasound. Further did we observe a relevant decrease of intima-media thickness (IMT) values of all arteries assessed by ultrasound during follow-up. Especially the left common superficial temporal artery showed a relevant decrease of IMT from 0.49 mm at time of diagnosis to 0.23 mm on 6-months follow-up. This is the first GCA case described in literature, in which vasculitis of the central retinal artery and the lingual artery could be visualized at diagnosis and during follow-up using high-resolution ultrasound.

Conclusion
High-resolution ultrasound can be a useful diagnostic imaging modality in diagnosis and follow-up of GCA, even in small arteries like the lingual artery or central retinal artery. Ultrasound of the central retinal artery could be an important imaging tool in identifying suspected vasculitic affection of the central retinal artery.
Early spot sign is associated with functional outcomes in primary intracerebral hemorrhage survivors
Authors: Tseng Wen-Che , Wang Yu-Fen , Wang Tyng-Guey , Hsiao Ming-Yen 
Published: March 2021

Abstract
Background
The computed tomography angiography (CTA) spot sign is a validated predictor of hematoma expansion and 30-day mortality in intracerebral hemorrhage (ICH). However, whether the spot sign predicts worse functional outcomes among ICH survivors remains unclear. This study investigated the frequency of the spot sign and its association with functional outcomes and length of hospital stay among ICH survivors.

Methods
This was a retrospective analysis of consecutive patients with primary ICH who received CTA within 24 h from presentation to admission to the emergency department of a single medical center between January 2007 and December 2017. Patients who died before discharge and those referred from other hospitals were excluded. CTAs with motion artifacts were excluded from the analysis. The presence of a spot sign was examined by an experienced neuroradiologist. Functional outcomes were determined based on the modified Rankin Scale (mRS) score and Barthel Index (BI). Severe dependency in activities of daily living (ADL) was defined as BI of ≤60 and severe disability as an mRS score of ≥4. Odds ratio (OR) and multiple linear regression were used as measures of association.

Results
In total, 66 patients met the inclusion criteria, of whom 9 (13.64%) were positive for a spot sign. No significant differences were observed in baseline characteristics between patients with and without a spot sign. Patients with a spot sign tended to be severely dependent in ADL at discharge (66.67% vs 41.07%; OR = 2.87; p = 0.15) and were more likely to require ICH-related surgery (66.67% vs 24.56%; OR = 6.14; p = 0.01). In multiple linear regression, patients with a higher spot sign score had a significantly longer hospital stay (coefficient = 9.57; 95% CI = 2.11–17.03; p = 0.013).

Conclusions
The presence of a spot sign is a common finding and is associated with longer hospital stay and possibly worse functional outcomes in ICH survivors.
Design and psychometric evaluation of the fathers’ fear of childbirth scale: a mixed method study
Authors: Ghaffari Seyedeh Fatemeh , Sharif Nia Hamid , Elyasi Forouzan , Shahhosseini Zohreh , Mohammadpoorsaravimozafar Zohre 
Published: March 2021

Abstract
Background
Fear of childbirth is reported in 13% of fathers, and it may have adverse consequences for the fathers’ health as well as their families. To reduce the fear of childbirth in the expectant fathers, an appropriate screening tool is needed. Due to the lack of a valid and reliable questionnaire to measure fathers’ fear of childbirth, this study was conducted to develop the Fathers’ Fear of Childbirth Scale and evaluate its psychometric properties.

Methods
This mixed method study was conducted in two phases. In the qualitative phase (or item generation), semi-structured interviews were conducted with 20 expectant fathers, and a literature review was performed to generate the Fathers’ Fear of Childbirth Scale items pool. In the quantitative phase (or psychometric evaluation), reliability as well as face, content, and construct validity of this scale were evaluated. To establish construct validity, exploratory and confirmatory factor analyses were performed. Reliability was evaluated through internal consistency and composite reliability measures.

Results
The primary version of Fathers’ Fear of Childbirth Scale contained 32 items, which were reduced to 17 items while establishing construct validity. Exploratory factor analysis extracted two factors, namely fear of childbirth process (12 items) and fear of hospital (5 items). These factors explained 50.82% of the total variance. Goodness of fit indices within the confirmatory factor analysis was acceptable. Internal consistency and composite reliability indices of all the factors were greater than 0.70.

Conclusion
The Fathers’ Fear of Childbirth Scale has a suitable validity and reliability for assessing fear of childbirth in fathers. It is a simple report instrument that can be easily implemented by health care professionals.
Decision to delivery interval and associated factors for emergency cesarean section: a cross-sectional study
Authors: Kitaw Tebabere Moltot , Limenh Simachew Kassa , Chekole Fantahun Alemnew , Getie Simegnew Asmer , Gemeda Belete Negese , Engda Abayneh Shewangzaw 
Published: March 2021

Abstract
Background
Emergency cesarean section is a commonly performed surgical procedure in pregnant women with life-threatening conditions of the mother and/or fetus. According to the Royal College of Obstetricians and Gynecologists and the American College of Obstetricians and Gynecologists, decision to delivery interval for emergency cesarean sections should be within 30 min. It is an indicator of quality of care in maternity service, and if prolonged, it constitutes a third-degree delay. This study aimed to assess the decision to delivery interval and associated factors for emergency cesarean section in Bahir Dar City Public Hospitals, Ethiopia.

Method
An institution-based cross-sectional study was conducted at Bahir Dar City Public Hospitals from February to May 2020. Study participants were selected using a systematic random sampling technique. A combination of observations and interviews was used to collect the data. Data entry and analysis were performed using Epi-data version 3.1 and SPSS version 25, respectively. Statistical significance was set at p < 0.05.

Result
Decision-to-delivery interval below 30 min was observed in 20.3% [95% CI = 15.90–24.70%] of emergency cesarean section. The results showed that referral status [AOR = 2.5, 95% CI = 1.26–5.00], time of day of emergency cesarean section [AOR = 2.5, 95%CI = 1.26–4.92], status of surgeons [AOR = 2.95, 95%CI = 1.30–6.70], type of anesthesia [AOR = 4, 95% CI = 1.60–10.00] and transfer time [AOR = 5.26, 95% CI = 2.65–10.46] were factors significantly associated with the decision to delivery interval.

Conclusion
Decision-to-delivery intervals were not achieved within the recommended time interval. Therefore, to address institutional delays in emergency cesarean section, providers and facilities should be better prepared in advance and ready for rapid emergency action.
PCNA-associated factor (KIAA0101/PCLAF) overexpression and gene copy number alterations in hepatocellular carcinoma tissues
Authors: Tantiwetrueangdet Anchalee , Panvichian Ravat , Sornmayura Pattana , Leelaudomlipi Surasak , Macoska Jill A. 
Published: March 2021

Abstract
Background
PCNA-associated factor, the protein encoded by the KIAA0101/PCLAF gene, is a cell-cycle regulated oncoprotein that regulates DNA synthesis, maintenance of DNA methylation, and DNA-damage bypass, through the interaction with the human sliding clamp PCNA. KIAA0101/PCLAF is overexpressed in various cancers, including hepatocellular carcinoma (HCC). However, it remains unknown whether KIAA0101/PCLAF overexpression is coupled to gene amplification in HCC.

Methods
KIAA0101/PCLAF mRNA expression levels were assessed by quantitative real-time PCR (qRT-PCR) in 40 pairs of snap-frozen HCC and matched-non-cancerous tissues. KIAA0101/PCLAF gene copy numbers were evaluated by droplet digital PCR (ddPCR) in 36 pairs of the tissues, and protein expression was detected by immunohistochemistry (IHC) in 81 pairs of formalin-fixed paraffin-embedded (FFPE) tissues. The KIAA0101/PCLAF gene copy number alteration and RNA expression was compared by Spearman correlation. The relationships between KIAA0101 protein expression and other clinicopathological parameters, including Ki-67, p53, and HBsAg protein expression in HCC tissues, were evaluated using Chi-square test.

Results
Our results demonstrated that KIAA0101/PCLAF mRNA levels were significantly higher in HCC than in the matched-non-cancerous tissues (p < 0.0001). The high KIAA0101/PCLAF mRNA levels in HCC were associated with poor patient survival. The KIAA0101/PCLAF gene was not amplified in HCC, and KIAA0101/PCLAF gene copy numbers were not associated with KIAA0101/PCLAF transcript levels. KIAA0101 protein was overexpressed in the majority of HCC tissues (77.8%) but was not detectable in matched-non-cancerous tissues. Significant correlations between the expression of KIAA0101 protein in HCC tissues and p53 tumor suppressor protein (p = 0.002) and Ki-67 proliferation marker protein (p = 0.017) were found. However, KIAA0101 protein levels in HCC tissues were not correlated with patient age, tumor size, serum AFP level, or the HBsAg expression.

Conclusions
KIAA0101/PCLAF mRNA and protein overexpression is frequently observed in HCC but without concurrent KIAA0101/PCLAF gene amplification. Significant correlations between the expression of KIAA0101 protein and p53 and Ki-67 proteins were observed in this study. Thus, detection of KIAA0101/PCLAF mRNA/protein might be used, along with the detection of p53 and Ki-67 proteins, as potential biomarkers to select candidate patients for further studies of novel HCC treatment related to these targets.
Trends in incidence and histological pattern of thyroid cancer in Ho Chi Minh City, Vietnam (1996–2015): a population-based study
Authors: Pham Dung X. , Nguyen Hien D. , Phung An H. T. , Bui Tung D. , Tran Thach S. , Tran Bich N. H. , Ho-Pham Lan T. , Nguyen Tuan V. 
Published: March 2021

Abstract
Background
The burden and trend of thyroid cancer in Vietnam have not been well documented. This study aimed to investigate the trends in incidence and histological pattern of thyroid cancer in Ho Chi Minh City from 1996 to 2015.

Methods
A population-based study retrieved data from the Ho Chi Minh City Cancer Registry during 1996–2015. Trends in the incidence of thyroid cancer were investigated based on age, gender, and histology for each 5-year period. Annual percentage change (APC) in incidence rates was estimated using Joinpoint regression analysis.

Results
In the study period, there were 5953 thyroid cancer cases (men-to-women ratio 1:4.5) newly diagnosed in Ho Chi Minh City with the mean age of 42.9 years (±14.9 years). The age-standardized incidence rate of thyroid cancer increased from 2.4 per 100,000 during 1996–2000 (95% confidence interval [95% CI]: 2.2–2.6) to 7.5 per 100,000 during 2011–2015 (95% CI: 7.3–7.9), corresponded to an overall APC of 8.7 (95% CI 7.6–9.9). The APC in men and women was 6.2 (95% CI: 4.2–8.2) and 9.2 (95% CI: 8.0–10.4), respectively. The incidence rate in the < 45 years age group was the highest diagnosed overall and increased significantly in both men (APC 11.0) and women (APC 10.1). Both genders shared similar distribution of subtype incidences, with papillary thyroid cancer constituted the most diagnosed (73.3% in men and 85.2% in women). The papillary thyroid cancer observed a markedly increase overall (APC of 10.7 (95% CI 9.3–12.0)).

Conclusions
There were appreciable increases in the age-standardized incidence rate of thyroid cancer in both genders, mainly contributed by the papillary subtype. The age of patients at diagnosis decreased gradually. The widespread utilization of advanced diagnostic techniques and healthcare accessibility improvement might play a potential role in these trends. Further investigations are needed to comprehend the risk factors and trends fully.
Quantitative assessment and determinants of the papillary microvasculature in healthy subjects
Authors: Zhou Li-jun , Luo Xiu-zhi , Shen Pei-yang , Li Xin , Su Peng , Zhu Zhe , Yan Shi-gang , Kong Xiang-bin , Lu Xiao-he 
Published: March 2021

Abstract
Background
It is critical to monitor the optic disc’s vessel density using Optical coherence tomography angiography (OCTA) and evaluate its determinants. In the current study, we investigate the superficial vessel density (VD) of the papillary microvasculature and its determinants in healthy subjects of Southern China.

Methods
This was a prospective, cross-sectional study. Superficial VD in healthy individuals’ optic disc region was measured by OCTA. The factors associated with ocular and systemic parameters were analyzed using a generalized estimation equation (GEE) model.

Results
A total of 510 eyes of 260 healthy subjects were analyzed in the study. The total VD in the optic disc area was 17.21 ± 2.15 mm− 1 (95% CI, 17.02–17.40 mm− 1). The VD in the inner ring and the outer ring of the optic disc were significantly higher compared with the central ring, while the VD of the superior quadrant and inferior quadrant was significantly higher compared with the temporal and nasal quadrant. After adjusting for the ocular factors and systemic factors, AL (β = − 0.4917, P = 0.0003), disc area (β = − 0.3748, P = 0.0143), CMT (β = − 0.0183, P = 0.0003) and SSI (β = 1.0588, P < 0.001) were significantly associated with total VD of the optic disc.

Conclusion
The mean total VD in the optic disc area was 17.21 ± 2.15 mm− 1 in healthy subjects, and the superior and inferior VD was significantly higher than the temporal and nasal VD. AL, disc area, CMT, and SSI may affect the total VD in the optic disc area and should be considered in clinical practice.
Risk factors for repeated dexamethasone intravitreal implant therapy for macular edema due to treatment-naïve branch retinal vein occlusion
Authors: Huang Yu-Te , Lin Chun-Ju , Chen Huan-Sheng , Tien Peng-Tai , Lai Chun-Ting , Hsia Ning-Yi , Lin Jane-Ming , Chen Wen-Lu , Tsai Yi-Yu 
Published: March 2021

Abstract
Background
This study evaluated the effects of dexamethasone intravitreal implant on treatment-naïve branch retinal vein occlusion (BRVO)-induced macular edema (ME), and the risk factors for earlier repeated treatment.

Methods
Patients treated from 2013 to 2016 were enrolled. The patients’ demographics, medical history, best-corrected visual acuity (BCVA), and central retinal thickness (CRT) were recorded. Risk factors for repeated treatment were identified using a Cox proportional hazard model and logistic regression.

Results
29 patients (mean age: 58.64 ± 13.3 years) were included; 44.8% received only one injection, while 55.2% received two or more. The mean initial CRT was 457.8 ± 167.1 μm; the peak CRT and final CRT improved significantly to 248.9 ± 57.9 μm and 329.2 ± 115.1 μm, respectively. The peak BCVA improvement and final improvement were 29.5 ± 23.5 approximate ETDRS letters and 19.8 ± 24.4 letters, respectively, with 62.1% of patients improving by more than 15 letters. Older age, higher initial CRT, and diabetes were the risk factors for multiple injections.

Conclusion
Dexamethasone intravitreal implant results in significant peak CRT and BCVA improvements, while older age, higher initial CRT, and diabetes are risk factors for repeated injections. The optimal retreatment schedule for these patients should be further explored.
Prevalence and socioeconomic burden of diabetes mellitus in South Korean adults: a population-based study using administrative data
Authors: Oh Sung-Hee , Ku Hyemin , Park Kang Seo 
Published: March 2021

Abstract
Background
Diabetes leads to severe complications and imposes health and financial burdens on the society. However, currently existing domestic public health studies of diabetes in South Korea mainly focus on prevalence, and data on the nationwide burden of diabetes in South Korea are lacking. The study aimed to estimate the prevalence and economic burden of diabetes imposed on the South Korean society.

Methods
A prevalence-based cost-of-illness study was conducted using the Korean national claims database. Adult diabetic patients were defined as those aged ≥20 years with claim records containing diagnostic codes for diabetes (E10-E14) during at least two outpatient visits or one hospitalization. Direct costs included medical costs for the diagnosis and treatment of diabetes and transportation costs. Indirect costs included productivity loss costs due to morbidity and premature death and caregivers’ costs. Subgroup analyses were conducted according to the type of diabetes, age (< 65 vs. ≥65), diabetes medication, experience of hospitalization, and presence of diabetic complications or related comorbidities.

Results
A total of 4,472,133 patients were diagnosed with diabetes in Korea in 2017. The average annual prevalence of diabetes was estimated at 10.7%. The diabetes-related economic burden was USD 18,293 million, with an average per capita cost of USD 4090 in 2019. Medical costs accounted for the biggest portion of the total cost (69.5%), followed by productivity loss costs (17.9%), caregivers’ costs (10.2%), and transportation costs (2.4%). According to subgroup analyses, type 2 diabetes, presence of diabetic complications or related comorbidities, diabetes medication, and hospitalization represented the biggest portion of the economic burden for diabetes. As the number of complications increased from one to three or more, the per capita cost increased from USD 3991 to USD 11,965. In inpatient settings, the per capita cost was ~ 10.8 times higher than that of outpatient settings.

Conclusions
South Korea has a slightly high prevalence and economic burden of diabetes. These findings highlight the need for effective strategies to manage diabetic patients and suggest that policy makers allocate more health care resources to diabetes. This is the first study on this topic, conducted using a nationally representative claims database in South Korea.
Complications of clavicle fracture surgery in patients with concomitant chest wall injury: a retrospective study
Authors: Yang Tsung-Han , Ko Huan-Jang , Wang Alban Don , Tseng Wo-Jan , Chia Wei-Tso , Chen Men-Kan , Su Ying-Hao 
Published: March 2021

Abstract
Background
The impact of associated chest wall injuries (CWI) on the complications of clavicle fracture repair is unclear to date. This study aimed to investigate the complications after surgical clavicle fracture fixation in patients with and without different degrees of associated CWI.

Methods
A retrospective review over a four-year period of patients who underwent clavicle fracture repair was conducted. A CWI and no-CWI group were distinguished, and the CWI group was subdivided into the minor-CWI (three or fewer rib fractures without flail chest) and complex-CWI (flail chest, four or more rib fractures) subgroup. Demographic data, classification of the clavicle fracture, number of rib fractures, and associated injuries were recorded. Overall complications included surgery-related complications and unplanned hospital readmissions. Univariate analysis and stepwise backward multivariate logistic regression were used to identify potential risk factors for complications.

Results
A total of 314 patients undergoing 316 clavicle fracture operations were studied; 28.7% of patients (90/314) occurred with associated CWI. Patients with associated CWI showed a significantly higher age, body mass index, and number of rib fractures. The overall and surgical-related complication rate were similar between groups. Unplanned 30-day hospital readmission rates were significantly higher in the complex-CWI group (p = 0.02). Complex CWI and number of rib fractures were both independent factor for 30-day unplanned hospital readmission (OR 1.59, 95% CI: 1.00–2.54 and OR 1.33, 95% CI: 1.06–1.68, respectively).

Conclusion
CWI did not affect surgery-related complications after clavicle fracture repair. However, complex-CWI may increase 30-day unplanned hospital readmission rates.
The technical feasibility and preliminary results of minimally invasive endoscopic-TLIF based on electromagnetic navigation: a case series
Authors: Xu Derong , Han Shuo , Wang Chao , Zhu Kai , Zhou Chuanli , Ma Xuexiao 
Published: March 2021

Abstract
Background
Uniportal full endoscopic posterolateral transforaminal lumbar interbody fusion (Endo-TLIF) with percutaneous pedicle screw fixation is a promising, minimally invasive method for the treatment of lumbar spondylolisthesis. However, repeated radiation exposure from X-rays and the steep learning curve remain to be improved.

Methods
This retrospective study explored the effects of electromagnetic navigation on improving Endo-TLIF with percutaneous pedicle screw fixation. Clinical information from 42 patients who had received Endo-TLIF with percutaneous pedicle screw fixation from May 2019 to November 2020 was analyzed retrospectively. The procedures were assisted under electromagnetic navigation. The rate of adjustment for guide wires, frequency of X-ray exposure, operative time, accuracy of pedicle screw location, and clinical outcomes were recorded.

Results
The mean follow-up for 42 patients was 11.9 ± 3.1 months. The mean age of the patients was 56.1 ± 9.26 years, with a female/male ratio of 25:17. According to postoperative CT scans and 3D reconstructions, the excellent and good rate of pedicle screws was 96.4%. The rate of adjustment for guide wires under the assistance of electromagnetic navigation was 1.78%, and the frequency of X-ray exposure was 8.27 ± 1.83. The operative time was 167.25 ± 28.16 min, including the duration of guide wire insertion (14.63 ± 5.45 min) and duration of decompression and cage placement (75.43 ± 13.97 min). The duration of hospitalization after operation was 2.59 ± 1.16 days. The preoperative VAS score was 7.51 ± 1.91, and the preoperative ODI was 82.42 ± 8.7%. At the last follow-up, the VAS score was 2.09 ± 0.59, and the ODI was 11.09 ± 3.2%. There were statistically significant improvements in the VAS score and ODI in all patients at the follow-up (p < 0.05).

Conclusions
Electromagnetic navigation can provide accurate positioning and guidance in real time, which improves the surgical efficiency of percutaneous pedicle screw placement and endoscopic decompression in Endo-TLIF with reduced radiation exposures.