Volumetric reduction and dissolution prediction of monosodium urate crystal during urate-lowering therapy - a study using dual-energy computed tomography.

METHODS: Baseline and follow-up DECTs were performed under a standard ULT protocol. Monthly dissolution rates were calculated by simple and compound methods. Correlations with average SU were compared and analyzed. Best-fit regression model was identified. MSU dissolution times were plotted against SU at different endpoints. RESULTS: In 29 tophaceous gout patients, MSU volume reduced from baseline 10.94 ± 10.59 cm3 to 2.87 ± 5.27 cm3 on follow-up (p = .00). Dissolution rate had a stronger correlation with SU if calculated by compound method (Pearson's correlation coefficient r= -0.77, p = .00) and was independent of baseline MSU load. The ensuing dissolution model was logarithmic and explained real-life scenarios. When SU > 0.43 mmol/l, dissolution time approached infinity. It improved to 10-19 months at SU = 0.24 mmol/l. When SU approximated zero (as with pegloticase), dissolution flattened and still took 4-8 months. CONCLUSION: MSU dissolution is better described as a logarithmic function of SU, which explains, predicts, and facilitates understanding of the dissolution process.

Emergence of Carbapenem-Resistant Acinetobacter baumannii in Nursing Homes With High Background Rates of MRSA Colonization.

Carbapenem-resistant Acinetobacter baumannii (CRAB) with diverse multilocus sequence typing emerged among our nursing home residents (6.5%) with a high background rate of MRSA (32.2%). Rectal swabs yielded a higher rate of CRAB detection than axillary or nasal swabs. Bed-bound status, use of adult diapers, and nasogastric tube were risk factors for CRAB colonization. Infect Control Hosp Epidemiol 2016;37:983-986.

Transmission of methicillin-resistant Staphylococcus aureus in the long term care facilities in Hong Kong.

BACKGROUND: The relative contribution of long term care facilities (LTCFs) and hospitals in the transmission of methicillin-resistant Staphylococcus aureus (MRSA) is unknown. METHODS: Concurrent MRSA screening and spa type analysis was performed in LTCFs and their network hospitals to estimate the rate of MRSA acquisition among residents during their stay in LTCFs and hospitals, by colonization pressure and MRSA transmission calculations. RESULTS: In 40 LTCFs, 436 (21.6%) of 2020 residents were identified as 'MRSA-positive'. The incidence of MRSA transmission per 1000-colonization-days among the residents during their stay in LTCFs and hospitals were 309 and 113 respectively, while the colonization pressure in LTCFs and hospitals were 210 and 185 per 1000-patient-days respectively. MRSA spa type t1081 was the most commonly isolated linage in both LTCF residents (76/121, 62.8%) and hospitalized patients (51/87, 58.6%), while type t4677 was significantly associated with LTCF residents (24/121, 19.8%) compared with hospitalized patients (3/87, 3.4%) (p<0.001). This suggested continuous transmission of MRSA t4677 among LTCF residents. Also, an inverse linear relationship between MRSA prevalence in LTCFs and the average living area per LTCF resident was observed (Pearson correlation -0.443, p=0.004), with the odds of patients acquiring MRSA reduced by a factor of 0.90 for each 10 square feet increase in living area. CONCLUSIONS: Our data suggest that MRSA transmission was more serious in LTCFs than in hospitals. Infection control should be focused on LTCFs in order to reduce the burden of MRSA carriers in healthcare settings.

Epidemiology and prevalence of pelvic organ prolapse.

PURPOSE OF REVIEW: The purpose of this review is to discuss the epidemiology and prevalence of pelvic organ prolapse. RECENT FINDINGS: There will be an increase in demand for pelvic floor treatment as the aging population increases in number. Identification of modifiable risk factors may help in patient counseling and prevention in patients at risk for developing pelvic organ prolapse. SUMMARY: As the elderly population is expected to double in number by the year 2030, pelvic organ prolapse will become more prevalent. To allocate resources to the increasing number of female patients who will present to healthcare providers with pelvic organ prolapse, we need a better understanding of its incidence, risk factors, prevalence, natural history, clinical implications, and treatment options. This understanding will not only improve our ability to treat this growing patient population but will also help us develop preventive strategies to ameliorate patients' suffering from this condition.

Periodontal status of adult patients treated with fixed buccal appliances and removable aligners over one year of active orthodontic therapy.

OBJECTIVE: To compare the periodontal status of adults treated with fixed buccal orthodontic appliances vs removable orthodontic aligners over 1 year of active therapy. MATERIALS AND METHODS: The study population consisted of 42 subjects; 22 treated with fixed buccal orthodontic appliances and 20 treated with removable aligners. Clinical indices recorded included: plaque index (PI), gingival index (GI), bleeding on probing (BOP), and probing pocket depth (PPD). Plaque samples were assessed for hydrolysis of N-benzoyl-DL-arginine-naphthylamide (BANA test). Indices and BANA scores were recorded before treatment and at 6 weeks, 6 months, and 12 months after initiation of orthodontic therapy. RESULTS: After 6 weeks, only mean PPD was greater in the fixed buccal orthodontic appliance group. However, after 6 months, the fixed buccal orthodontic appliance group had significantly greater mean PI, PPD, and GI scores and was 5.739 times more likely to have a higher BANA score. After 12 months, the fixed buccal orthodontic appliance group continued to have greater mean PI, GI, and PPD, while a trend was noted for higher BANA scores and BOP. CONCLUSIONS: These results suggest treatment with fixed buccal orthodontic appliances is associated with decreased periodontal status and increased levels of periodontopathic bacteria when compared to treatment with removable aligners over the 12-month study duration.

Colpocleisis for advanced pelvic organ prolapse.

OBJECTIVE: To characterize our experience with colpocleisis in a urologic setting because it has not been documented broadly in the urologic literature. METHODS: Retrospective review of demographics, urodynamics, presenting symptoms, complications, and outcomes for patients undergoing colpocleisis from 2001-2010 was performed. A questionnaire including the short forms of the Urinary Distress Inventory and Pelvic Organ Prolapse Distress Inventory (POPDI-6), and the Patient Global Impression of Improvement was sent to consenting patients. RESULTS: Fifty-three patients were identified. Examinations were all POP-Q stage 3 or greater or Baden Walker grade 3 or higher; 73.6% underwent total colpocleisis and 26.4% Le Fort; 60.4% underwent concomitant sling. Complications included 1 patient requiring transfusion, 1 with pulmonary embolus, 1 needing clot evacuation, and 1 requiring intraoperative cystotomy repair. There was no postoperative de novo urgency, no recurrence of prolapse, and no chronic urinary retention. In patients not undergoing urethral sling, stress urinary incontinence persisted in 4 patients and occurred de novo in 1. Mean follow-up was 9.3 months. Twenty-two surveys were returned: 90.9% described their condition as much or very much better on Patient Global Impression of Improvement. The average POPDI-6 score was 9.1. Frequency and urgency were the most common complaints leading to bother on the UDI-6 (33.3%). Most of these responders had a preoperative urge component. CONCLUSION: In a selected patient population, colpocleisis is safe and efficacious. Persistent lower urinary tract symptoms comprise the highest frequency of complaints after colpocleisis, and this must be included in patient counseling. In an aging patient population with expected increase in demand for pelvic floor reconstruction, colpocleisis is a useful approach for the urologist.

To sling or not to sling at the time of anterior vaginal compartment repair.

PURPOSE OF REVIEW: Prevention of postoperative stress urinary incontinence at the time of prolapse repair is controversial. There has been a shift away from colposuspension procedures to midurethral slings. As with any surgery, midurethral slings are associated with risks, which must be balanced against the benefits of preventing postoperative stress urinary incontinence. The aim of this overview is to review the controversy, discuss potential complications of midurethral slings, discuss the efficacy of concomitant sling placement, and suggest a method of systematically approaching patients with high-grade anterior compartment prolapse. RECENT FINDINGS: Several studies have recently advocated for the routine use of anti-incontinence procedures at the time of prolapse surgery; however, applying these data to midurethral slings is problematic. Ultimately, the issue of treatment of the urethra at the time of prolapse repair should be discussed with the patient with treatment rendered depending on the risk the patient is willing to bear. SUMMARY: The aim of this study is to discuss the risks and benefits of applying a midurethral sling in patients with high-grade anterior compartment prolapse. In these patients, placement of a suburethral sling may be approached systematically, taking into account the patients' variables and their own goals of therapy.

Using a community-based outreach program to improve breast health awareness among women in Hong Kong.

OBJECTIVE: To evaluate the effectiveness of a community-based health education program via a mobile van to promote the awareness of breast cancer and breast self-examination (BSE) practice among women in Hong Kong. DESIGN: One group pretest/posttest design. SAMPLE AND MEASUREMENTS: Seven hundred and seventy-seven women in Hong Kong completed a self-administered questionnaire before and after a breast health education program from May 2002 to March 2003. RESULTS: About half were aware of breast health and breast diseases (53.7%) and breast screening methods (48.6%) before the intervention. It was found that women who had received instruction on BSE practice, and those who were aware of breast screening methods, breast health, and breast diseases were more likely to have had prior BSE practice. Most indicated their willingness to practice BSE regularly (93.3%) and to pass on the BSE knowledge to their relatives and friends (92%) in the posttest. CONCLUSIONS: The outreach health education program has successfully reached women living in the 18 districts in Hong Kong. It appears to be useful in raising the awareness of breast health and BSE practice among the women, but longer term follow-up is required to ascertain its sustainability.

Preparing dental students to recognize and respond to domestic violence: the impact of a brief tutorial.

BACKGROUND: The purpose of this study was to evaluate the impact of a brief, interactive multimedia tutorial designed to prepare dentists to recognize and respond to domestic violence. METHODS: The authors randomly assigned dentists and dental students to one of three groups: a control group or one of two experimental groups in a modified Solomon four-group design. RESULTS: One hundred sixty-one dental students and 13 dentists completed the multimedia tutorial. At the posttest, subjects in both experimental groups demonstrated significantly better scores than did subjects in the control group on most items. The two experimental groups (pretest and posttest, posttest only) did not differ significantly from each other. CONCLUSION: An engaging, interactive tutorial presenting a simplified model for ways in which dental professionals can recognize and respond to domestic violence significantly improved dental students' knowledge of, and attitudes toward, the topic. CLINICAL IMPLICATIONS: Clinicians may improve the care they provide to patients by accessing this brief tutorial and following the lessons contained in it.