A randomized phase II study of secondary cytoreductive surgery in patients with relapsed ovarian cancer who have progressed on a PARP inhibitor as first-line maintenance therapy: the SOCCER-P study (KGOG 3067/JGOG 3036/APGOT-OV11).

BACKGROUND: Although two recent phase III randomized controlled trials showed survival benefits of undergoing secondary cytoreductive surgery for an initial relapse of ovarian cancer, patients who received a poly-ADP ribose polymerase inhibitor (PARPi) as the first-line maintenance treatment, which is currently the standard treatment for advanced ovarian cancer, were not included in those trials. Therefore, determining an optimal treatment strategy, including secondary cytoreductive surgery, in patients whose cancer progresses even with PARPi treatment, is needed. PRIMARY OBJECTIVE: To determine whether secondary cytoreductive surgery is beneficial in patients who have progressed on PARPi maintenance treatment. STUDY HYPOTHESIS: Secondary cytoreductive surgery followed by chemotherapy is superior to chemotherapy alone for patients who have progressed on PARPi maintenance treatment. TRIAL DESIGN: The SOCCER-P study is a multicenter randomized phase II clinical trial. Patients who meet the eligibility criteria will be randomized to either undergo secondary cytoreductive surgery and subsequent platinum-based chemotherapy plus or minus bevacizumab, or to receive platinum-based chemotherapy plus or minus bevacizumab alone. Patients randomly allocated to the surgery group will undergo secondary cytoreductive surgery followed by six cycles of a physician's choice of platinum-based chemotherapy once they have recovered from surgery. MAJOR INCLUSION/EXCLUSION CRITERIA: The major inclusion criteria are as follows: first recurrence of disease with treatment-free interval from last platinum dose (TFIp) ≥6 months and progression during PARPi maintenance or treatment-free interval from last PARPi therapy (TFIPARPi) <3 months. The major exclusion criteria are as follows: >1 line of prior chemotherapy, TFIp <6 months, and radiological signs suggesting metastases not accessible to surgical removal (complete resection is deemed not possible). PRIMARY ENDPOINT: Progression-free survival. SAMPLE SIZE: 124 patients. ESTIMATED DATES FOR COMPLETING ACCRUAL AND PRESENTING RESULTS: Accrual completion approximately the end of 2026 and the results are expected after 2 years of follow-up in 2029. TRIAL REGISTRATION: NCT05704621.

Proline-Hinged α-Helical Peptides Sensitize Gram-Positive Antibiotics, Expanding Their Physicochemical Properties to Be Used as Gram-Negative Antibiotics.

The outer membrane (OM) of Gram-negative bacteria is the most difficult obstacle for small-molecule antibiotics to reach their targets in the cytosol. The molecular features of Gram-negative antibiotics required for passing through the OM are that they should be positively charged rather than neutral, flat rather than globular, less flexible, or more increased amphiphilic moment. Because of these specific molecular characteristics, developing Gram-negative antibiotics is difficult. We focused on sensitizer peptides to facilitate the passage of hydrophobic Gram-positive antibiotics through the OM. We explored ways of improving the sensitizing ability of proline-hinged α-helical peptides by adjusting their length, hydrophobicity, and N-terminal groups. A novel peptide, 1403, improves the potentiation of rifampicin in vitro and in vivo and potentiates most Gram-positive antibiotics. The "sensitizer" approach is more plausible than those that rely on conventional drug discovery methods concerning drug development costs and the development of drug resistance.

Silent Speech Recognition with Strain Sensors and Deep Learning Analysis of Directional Facial Muscle Movement.

Silent communication based on biosignals from facial muscle requires accurate detection of its directional movement and thus optimally positioning minimum numbers of sensors for higher accuracy of speech recognition with a minimal person-to-person variation. So far, previous approaches based on electromyogram or pressure sensors are ineffective in detecting the directional movement of facial muscles. Therefore, in this study, high-performance strain sensors are used for separately detecting x- and y-axis strain. Directional strain distribution data of facial muscle is obtained by applying three-dimensional digital image correlation. Deep learning analysis is utilized for identifying optimal positions of directional strain sensors. The recognition system with four directional strain sensors conformably attached to the face shows silent vowel recognition with 85.24% accuracy and even 76.95% for completely nonobserved subjects. These results show that detection of the directional strain distribution at the optimal facial points will be the key enabling technology for highly accurate silent speech recognition.

Survival with Cemiplimab in Recurrent Cervical Cancer.

BACKGROUND: Patients with recurrent cervical cancer have a poor prognosis. Cemiplimab, the fully human programmed cell death 1 (PD-1)-blocking antibody approved to treat lung and skin cancers, has been shown to have preliminary clinical activity in this population. METHODS: In this phase 3 trial, we enrolled patients who had disease progression after first-line platinum-containing chemotherapy, regardless of their programmed cell death ligand 1 (PD-L1) status. Women were randomly assigned (1:1) to receive cemiplimab (350 mg every 3 weeks) or the investigator's choice of single-agent chemotherapy. The primary end point was overall survival. Progression-free survival and safety were also assessed. RESULTS: A total of 608 women were enrolled (304 in each group). In the overall trial population, median overall survival was longer in the cemiplimab group than in the chemotherapy group (12.0 months vs. 8.5 months; hazard ratio for death, 0.69; 95% confidence interval [CI], 0.56 to 0.84; two-sided P<0.001). The overall survival benefit was consistent in both histologic subgroups (squamous-cell carcinoma and adenocarcinoma [including adenosquamous carcinoma]). Progression-free survival was also longer in the cemiplimab group than in the chemotherapy group in the overall population (hazard ratio for disease progression or death, 0.75; 95% CI, 0.63 to 0.89; two-sided P<0.001). In the overall population, an objective response occurred in 16.4% (95% CI, 12.5 to 21.1) of the patients in the cemiplimab group, as compared with 6.3% (95% CI, 3.8 to 9.6) in the chemotherapy group. An objective response occurred in 18% (95% CI, 11 to 28) of the cemiplimab-treated patients with PD-L1 expression greater than or equal to 1% and in 11% (95% CI, 4 to 25) of those with PD-L1 expression of less than 1%. Overall, grade 3 or higher adverse events occurred in 45.0% of the patients who received cemiplimab and in 53.4% of those who received chemotherapy. CONCLUSIONS: Survival was significantly longer with cemiplimab than with single-agent chemotherapy among patients with recurrent cervical cancer after first-line platinum-containing chemotherapy. (Funded by Regeneron Pharmaceuticals and Sanofi; EMPOWER-Cervical 1/GOG-3016/ENGOT-cx9 ClinicalTrials.gov number, NCT03257267.).

Effects of an Individualized Educational Program for Korean Patients With Chronic Low Back Pain: A Randomized Controlled Trial.

BACKGROUND: Most patients with low back pain prefer to ignore symptoms and avoid medical management because of incorrect perceptions about this condition. However, over 90% of patients with chronic low back pain are hardly unable to perform daily activities, with 50% reporting that their daily activities have been severely impeded. PURPOSE: In this study, an individualized educational program was developed and implemented in a sample of Korean patients with chronic low back pain, and the effectiveness of this program was evaluated. METHODS: This study was conducted as a randomized controlled trial with outpatients (n = 43) in an orthopedic clinic. The Analysis, Design, Development, Implementation, and Evaluation model was applied to develop the educational program. The experimental group was provided with an educational booklet and contacted via biweekly personalized telephone and face-to-face counseling sessions. The control group was provided the educational booklet only. SAS Version 9.4 was used to analyze collected data using the χ2 test, t test, Fisher's exact test, Wilcoxon test, linear regression analysis, and Spearman partial correlation analysis. RESULTS: After 8 weeks, the experimental group demonstrated a significantly greater reduction in maximum, average, and current low back pain experienced within the immediately preceding 24 hours than the control group (p = .001, p = .002, and p = .014, respectively). In addition, daily living disability showed a greater reduction, and average back muscle strength showed a more significant improvement in the experimental group than in the control group (p = .001 and p = .035). The difference in medication adherence between the groups was not statistically significant (p = .089). The experimental group rated an average of 4.3 out of 5.0 points on the program satisfaction scale, indicating an 86% rate of satisfaction. CONCLUSIONS/IMPLICATIONS FOR PRACTICE: In this study, the individualized educational program was shown to be effective in helping alleviate symptoms in patients with chronic low back pain, decrease daily living disability, and improve average back muscle strength. It was further demonstrated that following up with expert medical staffs can motivate patients to incorporate the recommendations of the program into their daily routine, leading to higher patient satisfaction.

Solution to prevent tumor spillage in minimally invasive radical hysterectomy using the endoscopic stapler for treating early-stage cervical cancer: Surgical technique with video.

Gynecologic oncologists had originally preferred minimally invasive surgery (MIS) over laparotomic surgery for patients with early-stage cervical cancer until the Laparoscopic Approach to Cervical Cancer (LACC) trial reported a worse prognosis and more loco-regional recurrence in patients treated with MIS. Although some controversy remains, experts suggested that tumor cell spillage and aggravation may have been caused by intra-corporeal colpotomy, usage of uterine elevators, maintenance of Trendelenburg position, and tumor irritation by capnoperitoneum during surgery. Thus, we introduce a surgical procedure with some steps added to the conventional MIS radical hysterectomy for preventing tumor spillage during the surgery, which is currently being evaluated in terms of safety and efficacy through a prospective, multicenter, single-arm, phase II study, entitled "Safety of laparoscopic or robotic radical surgery using endoscopic stapler for inhibiting tumor spillage of cervical neoplasms (SOLUTION trial: NCT04370496)".

Characterization of Metabolic Syndrome Risk Factors and Health-Related Behaviors in Korean Patients With Breast Cancer by Abdominal Obesity Status.

BACKGROUND: Breast cancer is the second most prevalent malignancy among Korean women. Changes in lifestyle during and after remission of breast cancer tend to increase abdominal visceral fat, leading to increased risks of metabolic syndrome and chronic diseases. PURPOSE: This cross-sectional study examined the differences in metabolic syndrome risk factors and health-related behaviors between abdominally obese and nonabdominally obese groups of Korean patients with breast cancer. METHODS: The participants were assigned to nonabdominal obesity (waist circumference < 85 cm, n = 77) and abdominal obesity (waist circumference ≥ 85 cm, n = 59) groups, and a questionnaire was used to assess the prevalence of risk factors of metabolic syndrome and health-related behaviors in each. The chi-square test and t test were used to analyze the data. RESULTS: The average age was 54.2 years in the abdominal obesity group and 51.3 years in the nonabdominal obesity group. The average blood pressure and fasting blood glucose levels were higher in the abdominal obesity than the nonabdominal obesity group (117.3/76.3 vs. 108.9/70.4 mmHg, respectively [p = .001]; 96.9 and 90.1 mg/dl, respectively [p = .007]). High-density lipoprotein cholesterol was lower in the abdominal obesity than the nonabdominal obesity group (55.4 and 62.5 mg/dl, respectively [p = .005]), whereas triglycerides were higher in the abdominal obesity than the nonabdominal obesity group (151.6 and 111.3 mg/dl, respectively [p = .006]). The prevalence of metabolic syndrome in the abdominal obesity and nonabdominal obesity groups were 42.4% and 9.1%, respectively (p = .001). Moreover, eating habits differed between the two groups, with the frequency of vegetable consumption lower in the abdominal obesity than the nonabdominal obesity group (p = .040) and the frequencies of salty and sweet food consumption and of overeating higher in the abdominal obesity than the nonabdominal obesity group. The percentage of participants who exercised for 30 minutes three times per week was 52.5% in the abdominal obesity group and 71.4% in the nonabdominal obesity group (p = .024). CONCLUSIONS/IMPLICATIONS FOR PRACTICE: This observational study found more metabolic syndrome risk factors in the abdominal obesity group than the nonabdominal obesity group. Consumption of sweet foods and overeating were higher and the frequencies of vegetable intake and exercise were lower in the abdominal obesity group. These findings suggest that female abdominally obese patients with breast cancer exhibit health-related behaviors that require improvement and better management. Interventional programs should be developed based on the findings of this study to reduce cancer recurrence and mortality in patients with breast cancer.

Effects of a web-based expert support self-management program (WEST) for women with breast cancer: A randomized controlled trial.

INTRODUCTION: This study was a randomized controlled trial that examined the effects of a web-based expert support self-management program (WEST) on metabolic syndrome risk factors and self-efficacy among Korean women with breast cancer. METHODS: Participants were 60 women with breast cancer (30 participants each in both the experimental and control groups) who also had metabolic risk factors. WEST is based on the self-efficacy theory and is a self-health management program consisting of a web-based program, DIETEX (which entails keeping a health diary, identifying a lifestyle type, inputting personal health information), and expert support. WEST was provided to the experimental group once a week for 24 weeks. Metabolic syndrome risk factors and self-efficacy of the experimental and control groups were examined pre-intervention and at 12 and 24 weeks after intervention. RESULTS: The decreases in body fat, body fat percentage, and waist circumference were greater in the experimental group than in the control group at 24 weeks (p = 0.019, p = 0.025, and p = 0.038, respectively). DISCUSSION: The present study can provide basic data for the development and application of interventions for women with breast cancer in the future. Additionally, we propose that WEST be included in the treatment process to complement the intervention of medical personnel for improving metabolic risk factors in women with breast cancer.

Effects of a Web-Based Self-Management Program on the Behavior and Blood Glucose Levels of Women with Gestational Diabetes Mellitus.

Background:Women diagnosed with gestational diabetes mellitus suffer from anxiety and depression, which make controlling blood glucose levels difficult.Introduction:This quasi-experimental study uses a nonequivalent control group pretest-posttest design to investigate the effects of a web-based self-care program on self-care behaviors, anxiety, depression, and blood glucose in patients with gestational diabetes mellitus.Methods:The subjects of the study were outpatients being treated in the Department of Endocrinology at Hospital G, located in Seoul near University C, from July 15, 2015, to December 31, 2016. The experimental and control groups contained 22 participants each. The experimental group received a 12-week web-based program and one session of nutrition education; the control group received nutrition education. Using the SPSS program, pre-post changes in blood glucose, anxiety, depression, and self-care behaviors were examined between the two groups by a repeated-measures ANOVA.Results:After the 12 weeks intervention, self-care behaviors increased in both groups, and blood glucose monitoring increased in the experimental group (p = 0.001). Anxiety in the experimental group decreased by 5.1 points but increased by 1.0 point in the control group (p = 0.048). Depression increased in both groups. Glycated hemoglobin (HbA1C) levels decreased in the experimental group but increased in the control group (p = 0.001).Discussion:In addition to reducing HbA1C and anxiety, the web-based self-care program was effective in increasing the frequency of daily blood glucose monitoring in patients with gestational diabetes mellitus.Conclusions:This study will be helpful in informing an anxiety intervention program, blood glucose control, and healthy self-care behaviors in women with gestational diabetes mellitus.

Tumor evolution and chemoresistance in ovarian cancer.

Development of novel strategies to overcome chemoresistance is central goal in ovarian cancer research. Natural history of the cancer development and progression is being reconstructed by genomic datasets to understand the evolutionary pattern and direction. Recent studies suggest that intra-tumor heterogeneity (ITH) is the main cause of treatment failure by chemoresistance in many types of cancers including ovarian cancer. ITH increases the fitness of tumor to adapt to incompatible microenvironment. Understanding ITH in relation to the evolutionary pattern may result in the development of the innovative approach based on individual variability in the genetic, environment, and life style. Thus, we can reach the new big stage conquering the cancer. In this review, we will discuss the recent advances in understanding ovarian cancer biology through the use of next generation sequencing (NGS) and highlight areas of recent progress to improve precision medicine in ovarian cancer.

Spatial-temporal human gesture recognition under degraded conditions using three-dimensional integral imaging.

We present spatial-temporal human gesture recognition in degraded conditions including low light levels and occlusions using passive sensing three-dimensional (3D) integral imaging (InIm) system and 3D correlation filters. The 4D (lateral, longitudinal, and temporal) reconstructed data is processed using a variety of algorithms including linear and non-linear distortion-invariant filters; and compared with previously reported space-time interest points (STIP) feature detector, 3D histogram of oriented gradients (3D HOG) feature descriptor, with a standard bag-of-features support vector machine (SVM) framework, etc. The gesture recognition results with different classification algorithms are compared using a variety of performance metrics such as receiver operating characteristic (ROC) curves, area under the curve (AUC), SNR, the probability of classification errors, and confusion matrix. Integral imaging video sequences of human gestures are captured under degraded conditions such as low light illumination and in the presence of partial occlusions. A four-dimensional (4D) reconstructed video sequence is computed that provides lateral and depth information of a scene over time i.e. (x, y, z, t). The total-variation denoising algorithm is applied to the signal to further reduce noise and preserve data in the video frames. We show that the 4D signal consists of decreased scene noise, partial occlusion removal, and improved SNR due to the computational InIm and/or denoising algorithms. Finally, gesture recognition is processed with classification algorithms, such as distortion-invariant correlation filters; and STIP, 3D HOG with SVM, which are applied to the reconstructed 4D gesture signal to classify the human gesture. Experiments are conducted using a synthetic aperture InIm system in ambient light. Our experiments indicate that the proposed approach is promising in detection of human gestures in degraded conditions such as low illumination conditions with partial occlusion. To the best of our knowledge, this is the first report on spatial-temporal human gesture recognition in degraded conditions using passive sensing 4D integral imaging with nonlinear correlation filters.

Autonomy-supportive, Web-based lifestyle modification for cardiometabolic risk in postmenopausal women: Randomized trial.

The management of cardiometabolic risk factors, such as abdominal obesity, dyslipidemia, hypertension, and hyperglycemia, is essential for the health of postmenopausal women. In this study, we identified the effects of autonomy-supportive, Web-based lifestyle modification for the management cardiometabolic risk of postmenopausal women, and assessed the mediation effect of intrinsic motivation. This study was a randomized trial involving 71 postmenopausal Korean women. For the intervention group, we provided the Web-based autonomy supports for 12 weeks; however, for the control group, individual consultations on healthy lifestyle was conducted at the first meeting. In the intervention group, cardiometabolic risks ameliorated as follows: waist circumference and waist-to-height ratio decreased by 3.9 cm and 0.03 cm, respectively; triglycerides decreased by 8.5 mg/dl; triglycerides-to-high-density-lipoprotein cholesterol ratio decreased by 0.21; systolic blood pressure decreased by 3.3 mmHg, and the visceral adiposity index decreased. Among the subdomain of intrinsic motivation, perceived competence, effort/importance, and perceived choice showed an association with waist circumference changes. Web-based autonomy supports can be effective in implementation and maintenance, and the amelioration of cardiometabolic risk in postmenopausal women.

Optimal Cutoffs of Cardiometabolic Risk for Postmenopausal Korean Women.

PURPOSE: The purpose of the study was to identify the optimal cutoff values of indices for cardiometabolic risk in postmenopausal Korean women. Specifically, we intended to determine the cutoffs of waist circumference, waist-to-hip ratio (WHR), serum lipid profile, and homeostatic model of assessment-insulin resistance (HOMA-IR) for detecting metabolic syndrome (MetS), and metabolic obesity (MO). METHODS: The study participants were 397 postmenopausal women. We defined MetS and MO with the International Diabetes Federation criteria except for waist circumference. A receive operating characteristic curve analysis was used to assess the accuracy of diagnostic indices for identifying MetS and MO. Cutoff values were obtained both from the point on the receive operating characteristic curve which was closest to (0,1) and from the Youden's index. RESULTS: Among the participants, 34.5% and 73% were classified as having MetS and MO. The optimal cutoff of waist circumference and WHR were 81.9 cm [area under curve (AUC): 0.687, sensitivity: 61.7%, specificity: 68.9%], 0.87 (AUC: 0.660, sensitivity: 64.7%, Specificity: 60.2%) for MetS and 77.4 cm (AUC: 0.655, sensitivity: 65.6%, specificity: 57.8%), 0.86 (AUC: 0.680, sensitivity: 67.0%, specificity: 62.7%) for MO. Triglyceride to high-density lipoprotein ratio for MetS and MO were 2.11 (AUC: 0.838, sensitivity: 71.5%, specificity: 79.6%) and 1.59 (AUC: 0.725, sensitivity: 65.9%, specificity: 68.2%) respectively. The HOMA-IR for MetS was 1.36 (AUC: 0.773, sensitivity: 73%, specificity: 71.9%) and for MO was 1.17 (AUC: 0.713, sensitivity: 64.5%, specificity: 69.2%). CONCLUSIONS: For postmenopausal women, we suggest waist circumference of 81.9 cm and WHR of 0.87 as criteria of MetS. However, women with waist circumference over 77.4 cm and WHR over 0.86 should be monitored for the future development of MetS.

Prognostic implication of the metastatic lesion-to-ovarian cancer standardised uptake value ratio in advanced serous epithelial ovarian cancer.

OBJECTIVES: To evaluate the prognostic value of metabolic activity of metastatic lesions measured by 18F-flurodeoxyglucose (18F-FDG) uptake on preoperative positron emission tomography/computed tomography (PET/CT) in patients with advanced serous epithelial ovarian cancer (EOC). METHODS: Clinico-pathological variables and PET/CT parameters such as the maximum standardised uptake value of the ovarian cancer (SUVovary), metastatic lesions (SUVmeta), and the metastatic lesion-to-ovarian cancer standardised uptake value ratio (SUVmeta/SUVovary) were assessed in International Federation of Gynaecology and Obstetrics (FIGO) stage III, IV patients. RESULTS: Clinico-pathological data were retrospectively reviewed for 94 eligible patients. The median progression-free survival (PFS) was 18.5 months (range, 6-90 months), and 57 (60.6%) patients experienced recurrence. Older age [P = 0.017, hazard ratio (HR) 1.036, 95% CI 1.006-1.066], residual disease after surgery (P = 0.024, HR 1.907, 95% CI 1.087-3.346), and high SUVmeta/SUVovary (P = 0.019, HR 2.321, 95% CI 1.148-4.692) were independent risk factors of recurrence. Patients with high SUVmeta/SUVovary showed a significantly worse PFS than those with low SUVmeta/SUVovary (P = 0.007, log-rank test). CONCLUSIONS: Preoperative SUVmeta/SUVovary was significantly associated with recurrence and has an incremental prognostic value for PFS in patients with advanced serous EOC. KEY POINTS: • The prognostic value of the metabolic activity of metastatic lesions was investigated. • SUVmeta/SUVovary was significantly associated with recurrence of serous EOC. • Preoperative SUVmeta/SUVovary can be a predicator of serous EOC recurrence.

Differences in Prevalence of Metabolic Syndrome by Breastfeeding Experience of Women in Their 30s and 40s.

PURPOSE: The purpose of this study was to assess the differences in the prevalence of metabolic syndrome in women in their 30s and 40s by breastfeeding experience, using the the fifth Korea National Health and Nutrition Examination Survey (2010) data. METHODS: In this cross-sectional study, a total of 1,053 healthy women in their 30s and 40s, who had given birth was analyzed. To compare women with and without breastfeeding experience, chi-square test and t test were used. The relationship between metabolic syndrome and breastfeeding was assessed using logistic regression analysis adjusted demographic and lifestyle covariates. RESULTS: The breastfeeding experience of women in their 30s was associated with a decreased risk of elevated triglyceride after controlling for income, education, exercise and the last childbirth age [odds ratio (OR) = 0.44, 95% confidence interval (CI) (0.21, 0.95)]. In addition, women who breastfed more children had high odds of metabolic syndrome [OR = 4.03, 95%CI (2.03, 8.00)], and components of metabolic syndrome [abdominal obesity: OR = 2.02, 95%CI (1.17, 3.51), elevated triglyceride: OR = 1.98, 95%CI (1.14, 3.45), elevated blood pressure: OR = 2.65, 95%CI (1.28, 5.49)] than those who never breastfed children. CONCLUSIONS: This study found that postpartum breastfeeding may play a significant role in reducing the risk of metabolic syndrome and also that childbearing is associated with a higher incidence of metabolic syndrome among women in their 30s. For women in their 40s, the risk of metabolic syndrome did not significantly differ depending on the breastfeeding experience. This study indicated that breastfeeding can be a way to reduce metabolic health burdens in women in their 30s.

Electromagnetically induced transparency based on guided-mode resonances.

We present a novel, electromagnetically induced transparency system based on guided-mode resonances and numerically demonstrate its transmission characteristics through finite-difference time-domain simulations. The system is composed of two planar dielectric waveguides and a subwavelength grating. It is shown that by coupling the two resonant guide modes with a low- and high-quality factor, a narrow transparency window is generated inside a broad background transmission dip produced by the guided-mode resonance. Our work could provide another efficient way toward the realization of electromagnetically induced transparency.

Clinical effects of buttonhole cannulation method on hemodialysis patients.

Although the buttonhole cannulation method is now widely used as an alternative to the rope-ladder method in most countries, only the latter method is used in Korea. This study was performed to investigate clinical benefit of the buttonhole technique for arteriovenous fistula (AVF) cannulation in maintenance hemodialysis (HD) patients. Thirty-two patients receiving HD via mature AVF were included and AVF cannulation was performed by 20 experienced nurses. During the 8 weeks, AVFs were cannulated by the rope-ladder method with 15-gauge sharp needles. After creating of 2 pairs of tunnel tracks by sharp needles for 7 weeks, AVFs were cannulated by the buttonhole method using 15-gauge blunt needles during the 16 weeks. Vascular access blood flow rate (BFR), dialysis venous pressure (DVP), and dialysis adequacy (Kt/V) were measured within the first week of the two cannulation methods. Cannulation pain, hemostasis time, and nurse's stress were evaluated at the end of the two methods. There were no statistical differences in vascular access BFR (P = 0.139), DVP (P = 0.152), and dialysis adequacy (P = 0.343) between the two methods. However, the buttonhole method shortened hemostasis time (P = 0.001) and decreased cannulation pain (P = 0.001) as well as nurse's stress (P = 0.001) compared with the rope-ladder method. In conclusion, the buttonhole cannulation method improves hemostasis time, cannulation pain, and nurse's stress without a change in vascular access BFR and dialysis adequacy in HD patients.

Acceleration of integral imaging based incoherent Fourier hologram capture using graphic processing unit.

Speed enhancement of integral imaging based incoherent Fourier hologram capture using a graphic processing unit is reported. Integral imaging based method enables exact hologram capture of real-existing three-dimensional objects under regular incoherent illumination. In our implementation, we apply parallel computation scheme using the graphic processing unit, accelerating the processing speed. Using enhanced speed of hologram capture, we also implement a pseudo real-time hologram capture and optical reconstruction system. The overall operation speed is measured to be 1 frame per second.

Analysis of image distortion based on light ray field by multi-view and horizontal parallax only integral imaging display.

Three-dimensional image distortion caused by mismatch between autostereoscopic displays and contents is analyzed. For a given three-dimensional object scene, the original light ray field in the contents and deformed one by the autostereoscopic displays are calculated. From the deformation of the light ray field, the distortion of the resultant three-dimensional image is finally deduced. The light ray field approach enables generalized distortion analysis across different autostereoscopic display techniques. The analysis result is verified experimentally when multi-view contents are applied to a multi-view display of non-matching parameters and a horizontal parallax only integral imaging display.

Evaluation of mobile phone and Internet intervention on waist circumference and blood pressure in post-menopausal women with abdominal obesity.

PURPOSE: The present study evaluated whether an intervention using a short message service (SMS) by personal cellular phone and Internet would reduce cardiovascular risk factors in post-menopausal women with abdominal obesity over 12 weeks. METHODS: This is a quasi-experimental design with pre and post tests. Participants were recruited from the gynecology outpatient and family medicine departments of a tertiary care hospital located in an urban city of South Korea. Only 67 subjects completed the entire study, 34 in the intervention group and 33 controls. The goal of intervention was to reduce waist circumference (WC), body weight (BW) and blood pressure (BP) levels. Before the intervention, demographic variables, WC, BW, BP, fasting plasma glucose (FPG) and serum lipids were measured as pre-test data. The WC, BW, BP, FPG and serum lipids were measured again 12 weeks later. Patients in the intervention group were requested to record their WC, BW, BP, type and amount of diet and exercise in a weekly web-based diary through the Internet or by cellular phone. The researchers sent weekly recommendations on diet and exercise as an intervention to each patient, by both cellular phone and Internet. The intervention was applied for 12 weeks. RESULTS: WC and BW significantly decreased by 3.0 cm and 2.0 kg, respectively, at 12 weeks compared with the baseline in the intervention group. However, the mean changes in the control group significantly increased by 0.9 cm and 0.7 kg. Systolic BP (SBP) and diastolic BP (DBP) significantly decreased by 6.5 and 4.6 mmHg in the intervention group, respectively. The mean changes in the control group were not significant in either SBP or DBP. A significant mean decrease in total cholesterol (TC) was observed for the intervention group by 12.9 mg/dl, while the control group showed a significant mean increase by 1.5mg/dl. Low-density lipoprotein-cholesterol (LDL-C) for the intervention group showed a significant mean decrease 11.3mg/dl. The mean change in the control group was, however, not significant. CONCLUSION: Web-based individual intervention using both SMS and Internet improved WC, BW, BP, TC, and LDL-C during 12 weeks in post-menopausal women with abdominal obesity.