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1.
J Plast Reconstr Aesthet Surg ; 81: 119-121, 2023 06.
Article in English | MEDLINE | ID: mdl-37141785

ABSTRACT

BACKGROUND: Esthetic upper lateral cutaneous lip reconstruction preserves the apical triangle, nasolabial fold symmetry, and free margin position. The tunneled island pedicle flap (IPF) is a novel single-stage reconstruction to achieve these goals. OBJECTIVES: Describe the technique and patient and surgeon-reported outcomes for the tunneled IPF reconstruction of upper lateral cutaneous lip defects. METHODS: Retrospective chart review of consecutive tunneled IPF reconstruction following Mohs micrographic surgery (MMS) at a tertiary care center between 2014 and 2020. Patients rated their scars using the validated Patient Scar Assessment Scale (PSAS), and independent surgeons rated scars using the validated Observer Scar Assessment Scale (OSAS). Descriptive statistics were generated for patient demographics and tumor defect characteristics. RESULTS: Twenty upper lateral cutaneous lip defects were repaired with the tunneled IPF. Surgeons rated scars with a composite OSAS score of 11.83 ± 4.29 (mean, SD) [scale of 5 (normal skin) to 50 (worst scar imaginable)] and an overall scar score of 2.81 ± 1.11 [scale of 1 (normal skin) to 10 (worst scar imaginable)]. Patients rated their scars with a composite PSAS score of 10 ± 5.39 [scale of 6 (best possible score) to 60 (worst)] and with an overall score of 2.2 ± 1.78 [scale of 1 (normal skin) and 10 (very different from normal skin)]. One flap was surgically revised for pincushioning, but none experienced necrosis, hematoma, or infection. CONCLUSIONS: The tunneled IPF is a single-stage reconstruction for upper lateral cutaneous lip defects with favorable scar ratings by patients and observers.


Subject(s)
Lip , Sleep Apnea, Obstructive , Humans , Lip/surgery , Cicatrix/etiology , Cicatrix/surgery , Retrospective Studies , Surgical Flaps/surgery
2.
Clin Oncol (R Coll Radiol) ; 35(6): e352-e361, 2023 06.
Article in English | MEDLINE | ID: mdl-37031075

ABSTRACT

AIMS: Clinical equipoise exists regarding early-stage lung cancer treatment among patients as trials comparing stereotactic body radiation therapy (SBRT) and surgical resection are unavailable. Given the potential differences in treatment effectiveness and side-effects, we sought to determine the associations between treatment type, decision regret and depression. MATERIALS AND METHODS: A multicentre, prospective study of patients with stage IA-IIA non-small cell lung cancer (NSCLC) with planned treatment with SBRT or surgical resection was conducted. Decision regret and depression were measured using the Decision Regret Scale (DRS) and Patient Health Questionnaire-4 (PHQ-4) at 3, 6 and 12 months post-treatment, respectively. Mixed linear regression modelling examined associations between treatment and decision regret adjusting for patient sociodemographics. RESULTS: Among 211 study participants with early-stage lung cancer, 128 (61%) patients received SBRT and 83 (39%) received surgical resection. The mean age was 73 years (standard deviation = 8); 57% were female; 79% were White non-Hispanic. In the entire cohort at 3 months post-treatment, 72 (34%) and 57 (27%) patients had mild and severe decision regret, respectively. Among patients who received SBRT or surgery, 71% and 46% of patients experienced at least mild decision regret at 3 months, respectively. DRS scores increased at 6 months and decreased slightly at 12 months of follow-up in both groups. Higher DRS scores were associated with SBRT treatment (adjusted mean difference = 4.18, 95% confidence interval 0.82 to 7.54) and depression (adjusted mean difference = 3.49, 95% confidence interval 0.52 to 6.47). Neither patient satisfaction with their provider nor decision-making role concordance was associated with DRS scores. CONCLUSIONS: Most early-stage lung cancer patients experienced at least mild decision regret, which was associated with SBRT treatment and depression symptoms. Findings suggest patients with early-stage lung cancer may not be receiving optimal treatment decision-making support. Therefore, opportunities for improved patient-clinician communication probably exist.


Subject(s)
Carcinoma, Non-Small-Cell Lung , Lung Neoplasms , Radiosurgery , Humans , Female , Aged , Male , Carcinoma, Non-Small-Cell Lung/radiotherapy , Carcinoma, Non-Small-Cell Lung/surgery , Carcinoma, Non-Small-Cell Lung/pathology , Lung Neoplasms/radiotherapy , Lung Neoplasms/surgery , Lung Neoplasms/pathology , Prospective Studies , Treatment Outcome , Radiosurgery/adverse effects , Emotions , Neoplasm Staging
3.
JDR Clin Trans Res ; 8(2): 168-177, 2023 04.
Article in English | MEDLINE | ID: mdl-35354307

ABSTRACT

INTRODUCTION: Children and adolescents living with HIV (CALHIV) have a higher risk of hard and soft oral tissue diseases as compared with their healthy peers. It is important to increase awareness regarding the need to integrate oral health within medical care among pediatric HIV populations. Studies on associations of oral diseases with oral health-related quality of life (OHRQoL) in CALHIV are lacking. This study examined the association between oral diseases and OHRQoL in Kenyan CALHIV. METHODS: This cross-sectional analysis was nested in a longitudinal cohort study of CALHIV in Nairobi. CALHIV received oral examinations, and the World Health Organization's Oral Health Surveys and Record Form was administered. OHRQoL was measured with the Parental-Caregiver Perceptions Questionnaire, with the subdomains of global, oral symptoms, function limitations, and emotional and social well-being, with higher scores indicating poorer OHRQoL. Linear regression was used to model associations between OHRQoL and oral diseases, adjusting for age at the time of oral examination, CD4 counts, and caregiver's education. RESULTS: Among 71 CALHIV, the mean age was 12.6 y (SD, 2.9; range, 10 to <21), and the mean composite OHRQoL score was 12.6 (SD, 11.2). Ulcers (not herpes simplex virus or aphthous) were associated with the worst overall OHRQoL (mean, 21.8; SD, 11.1; P = 0.055) and oral symptoms subdomain (mean, 7.0, SD, 2.5; P = 0.003). Children with dry mouth and untreated caries had significantly higher mean global OHRQoL scores than those without disease (P < 0.0001). In the multivariate analysis, the OHRQoL composite score was 6.3 units (95% CI, -0.3 to 12.9) higher for those who had dry mouth and untreated dental caries; dry mouth accounted for the highest percentage of variability of OHRQoL (9.6%) and the global subdomain (31.9%). Ulcers accounted for the highest percentage of variability of the oral symptoms domain (15.4%). CONCLUSIONS: Oral ulcers, dry mouth, and untreated caries were associated with poorer OHRQoL in CALHIV. Integrating oral health into the primary care of CALHIV may improve their OHRQoL. KNOWLEDGE TRANSFER STATEMENT: This study aimed to determine the association of oral diseases with the oral health-related quality of life of children and adolescents living with HIV (CALHIV). The findings will form part of the evidence to incorporate oral health protocols into care programs for CALHIV. Oral health monitoring has the potential to increase the surveillance of HIV clinical status, monitor the effectiveness of antiretroviral therapy, and improve the oral health-related quality of life of CALHIV.


Subject(s)
Dental Caries , Mouth Diseases , Xerostomia , Adolescent , Child , Humans , Cross-Sectional Studies , Dental Caries/epidemiology , Dental Caries/psychology , Kenya/epidemiology , Longitudinal Studies , Mouth Diseases/epidemiology , Quality of Life , Ulcer , Young Adult , HIV Infections/epidemiology
4.
Eur Child Adolesc Psychiatry ; 31(6): 919-927, 2022 Jun.
Article in English | MEDLINE | ID: mdl-33523314

ABSTRACT

Rates of suicide in youth have increased over the last 50 years, yet our ability to predict suicidal behaviours has not significantly improved during this time. Examining predictors of suicide attempt lethality can enhance our understanding of suicidality in youth, yet research has focused on actual medical lethality (the actual danger to life resulting from a suicide attempt) rather than potential lethality (the potential for death that is associated with a suicide attempt). Thus, the aim of the present study was twofold: first, we quantified the percentage of youth for whom the severity of suicide attempt was misclassified by considering only actual lethality; second, we tested whether key variables that predict the actual lethality of suicide attempts also predict the potential lethality of suicide attempts in youth. We examined these questions in a sample of children and adolescents admitted to a psychiatric inpatient unit following a suicide attempt. Over 70% of youth who made serious suicide attempts would have been misclassified by assessments relying on only actual lethality. Although several variables relevant to the construct of actual lethality significantly predicted potential lethality (e.g., male sex, substance use disorder), others did not. In addition, we found that the subset of youth who would have been misclassified as low risk based on actual lethality had a disproportionately high need for healthcare resources due to future hospital admissions. The present study provides evidence to suggest that considering potential lethality may lead to improved detection and prediction of suicide risk in youth, and in doing so supports recent calls to broaden considerations of the lethality associated with suicide attempts.


Subject(s)
Substance-Related Disorders , Suicide, Attempted , Adolescent , Child , Hospitalization , Humans , Male , Risk Factors , Suicidal Ideation , Suicide, Attempted/psychology
5.
Breast Cancer Res Treat ; 166(2): 367-381, 2017 Nov.
Article in English | MEDLINE | ID: mdl-28803384

ABSTRACT

PURPOSE: With only 5-10% of breast cancer cases attributed to genetic inheritance, prevention efforts have focused on modifiable risk factors. Physical activity plays a role in reducing breast cancer risk; however, the interaction between physical activity and other modifiable risk factors, such as obesity, has received little attention. METHODS: A systematic review and meta-analysis was conducted of studies examining the relationship between physical activity and breast cancer and how it may be modified by body mass index (BMI). RESULTS: A total of 29 papers were included: 18 were cohort and 11 were case-control studies. Overall, a significant reduction in the relative risk of breast cancer was found in postmenopausal women with high versus low levels of physical activity for women with a BMI <25 kg/m2 (RR 0.85, 95% CI 0.79, 0.92) and ≥25 kg/m2 (RR 0.87, 95% CI 0.81, 0.93) but not ≥30 kg/m2 (RR: 0.93, 95% CI 0.76, 1.13). Physical activity was not associated with a significant reduction in risk of breast cancer in premenopausal women in any BMI group. CONCLUSION: The results of this meta-analysis suggest that physical activity is associated with a larger breast cancer risk reduction among women who are normal weight or overweight than among women who are obese. Since the included studies used diverse methods for assessment of physical activity and categories of BMI, results should be interpreted with caution and additional work is needed.


Subject(s)
Breast Neoplasms/epidemiology , Obesity/complications , Breast Neoplasms/prevention & control , Cohort Studies , Exercise , Female , Humans , Postmenopause , Premenopause
6.
Biogerontology ; 17(1): 241-55, 2016 Feb.
Article in English | MEDLINE | ID: mdl-26364049

ABSTRACT

Our primary objective in this study was to quantify whole brain and regional cerebral metabolic rates of glucose (CMRg) in young and older adults in order to determine age-normalized reference CMRg values for healthy older adults with normal cognition for age. Our secondary objectives were to--(i) report a broader range of metabolic and endocrine parameters including body fat composition that could form the basis for the concept of a 'metabolic phenotype' in cognitively normal, older adults, and (ii) to assess whether medications commonly used to control blood lipids, blood pressure or thyroxine affect CMRg values in older adults. Cognition assessed by a battery of tests was normal for age and education in both groups. Compared to the young group (25 years old; n = 34), the older group (72 years old; n = 41) had ~14% lower CMRg (µmol/100 g/min) specifically in the frontal cortex, and 18% lower CMRg in the caudate. Lower grey matter volume and cortical thickness was widespread in the older group. These differences in CMRg, grey matter volume and cortical thickness were present in the absence of any known evidence for prodromal Alzheimer's disease (AD). Percent total body fat was positively correlated with CMRg in many brain regions but only in the older group. Before and after controlling for body fat, HOMA2-IR was significantly positively correlated to CMRg in several brain regions in the older group. These data show that compared to a healthy younger adult, the metabolic phenotype of a cognitively-normal 72 year old person includes similar plasma glucose, insulin, cholesterol, triglycerides and TSH, higher hemoglobin A1c and percent body fat, lower CMRg in the superior frontal cortex and caudate, but the same CMRg in the hippocampus and white matter. Age-normalization of cognitive test results is standard practice and we would suggest that regional CMRg in cognitively healthy older adults should also be age-normalized.


Subject(s)
Aging/metabolism , Brain/metabolism , Cognition/physiology , Energy Metabolism/physiology , Glucose/metabolism , Hormones/blood , Adipose Tissue/physiology , Adult , Aged , Female , Humans , Male , Metabolic Clearance Rate , Organ Specificity/physiology , Phenotype , Reference Values , Reproducibility of Results , Sensitivity and Specificity , Tissue and Organ Procurement
7.
Br J Surg ; 102(12): 1480-7, 2015 Nov.
Article in English | MEDLINE | ID: mdl-26331269

ABSTRACT

BACKGROUND: No effective treatment is currently available to prevent progression of small and medium-sized abdominal aortic aneurysms (AAAs). Identification of drugs with sufficient promise to justify large expensive randomized trials remains challenging. One potentially useful strategy is to look for associations between commonly used drugs and AAA enlargement in appropriately adjusted observational studies. METHODS: Potential AAA measurements were identified from abdominal imaging reports in the electronic data files of three medical centres from 1995 to 2010. AAA measurements were extracted manually and patients with an aneurysm of 3 cm or larger, who had at least two measurements over an interval of at least 6 months, were identified. Other data were obtained from the electronic data files (demographics, co-morbidities, smoking status, drug use) to conduct a propensity analysis of the associations of drugs and other factors with AAA enlargement. RESULTS: From 52,962 abdominal imaging studies, 5362 patients with an AAA of 3 cm or more were identified, of whom 2428 had at least two measurements over at least 6 months. Mean AAA follow-up was 3.4 years and the mean AAA enlargement rate was 2.0 mm per year. Propensity analysis demonstrated no significant association of AAA enlargement with statins, beta-blockers, angiotensin-converting enzyme inhibitors or angiotensin II receptor blockers. Diabetes was associated with a reduction in AAA enlargement of 1.2 mm per year (P = 0.008), and chronic obstructive pulmonary disease was associated with increased enlargement (0.5 mm per year; P = 0.050). Moderate AAA measurement variation and substantial terminal digit preference were also observed, but the digit preference became less pronounced after 2000. CONCLUSION: This study confirms the negative association of diabetes with AAA progression. There was no evidence that commonly used cardiovascular drugs affect AAA enlargement.


Subject(s)
Aneurysm, Ruptured/diagnosis , Aortic Aneurysm, Abdominal/diagnosis , Tomography, X-Ray Computed/methods , Ultrasonography, Doppler/methods , Vascular Surgical Procedures/methods , Adrenergic beta-Antagonists/therapeutic use , Aged , Aneurysm, Ruptured/drug therapy , Aneurysm, Ruptured/surgery , Angiotensin-Converting Enzyme Inhibitors/therapeutic use , Aortic Aneurysm, Abdominal/drug therapy , Aortic Aneurysm, Abdominal/surgery , Disease Progression , Female , Follow-Up Studies , Humans , Male , Prognosis , Retrospective Studies , Risk Factors , Severity of Illness Index , Time Factors
8.
Article in English | MEDLINE | ID: mdl-21795034

ABSTRACT

Cerebral metabolic rate of glucose (CMRg) is lower in individuals affected by cognitive decline and dementia, especially in Alzheimer's disease. However, as yet there is no consensus as to whether CMRg decreases during healthy aging. Epidemiological studies show that weekly consumption of fish abundant in ω3 fatty acids has a protective effect on cognition during aging. Thus, the primary objective of this human study was to use positron emission tomography analysis with (18)F-fluorodeoxyglucose to evaluate whether supplementation with a fish oil rich in ω3 fatty acids increases cerebral glucose metabolism in young or elderly adults. Healthy young (23±5y old; n=5) and elderly (76±3y old; n=6) women and men were included in the study. Semi-quantitative expression of the data as 'standardized uptake values' showed that elderly participants had significantly lower cerebral glucose metabolism compared with the young group. However, when expressed quantitatively a CMRg, there was no effect of age or ω3 supplementation on glucose metabolism in any of the brains regions studied. Higher plasma triglyceride levels and higher plasma insulin levels were associated with lower CMRg in several regions, suggesting that a trend towards the metabolic syndrome may be associated with cerebral hypometabolism. We conclude that under these experimental conditions, ω3 supplementation did not affect brain glucose metabolism in the healthy elderly. Future studies in this area should address whether glucose intolerance or other conditions linked to the metabolic syndrome impact negatively on brain glucose metabolism and cognition.


Subject(s)
Aging/metabolism , Cerebellum/metabolism , Dietary Supplements , Fatty Acids, Omega-3/administration & dosage , Glucose/metabolism , Adult , Aged , Aged, 80 and over , Cerebellum/diagnostic imaging , Female , Fluorodeoxyglucose F18/administration & dosage , Humans , Male , Positron-Emission Tomography , Radiography , Radiopharmaceuticals/administration & dosage
9.
J Ind Microbiol Biotechnol ; 29(6): 323-4, 2002 Dec.
Article in English | MEDLINE | ID: mdl-12483472

ABSTRACT

A rapid (10 s) automated fluorescent method to estimate viable bacteria in metal working fluids (MWF) was compared with dip-slide cultures. The BactiFluor method compared favorably with 107 MWF (r=0.99) and with 30 other metal processing fluids.


Subject(s)
Bacteria/cytology , Colony Count, Microbial/methods , Industrial Microbiology/methods , Metals/metabolism , Automation , Bacteria/growth & development , Bacteria/isolation & purification , Fluorescence , Staining and Labeling , Time Factors
10.
Int J Eat Disord ; 30(4): 363-74, 2001 Dec.
Article in English | MEDLINE | ID: mdl-11746298

ABSTRACT

OBJECTIVE: The purpose of this study was to evaluate the longer-term outcome of three group cognitive-behavioral therapy (CBT) delivery models for the treatment of binge eating disorder (BED). METHOD: Fifty-one participants were assigned to one of three conditions. In the therapist-led condition (TL; n = 16), a psychologist provided psychoeducational information for the first half hour and led a group discussion for the second half hour of each session. In the partial self-help condition (PSH; n = 19), participants viewed a 30-min psychoeducational videotape, followed by a therapist-led discussion. In the structured self-help condition (SSH; n = 16), participants watched a psychoeducational videotape and led their own discussion. RESULTS: Reductions in binge eating episodes and associated symptoms were observed for all three treatments at post, 1-month, 6-month, and 1-year follow-up, with no significant differences among the three conditions. DISCUSSION: These findings suggest that CBT for BED can be delivered successfully using videotape and a structured self-help group format and that improvements in binge eating are maintained up to 1 year follow-up.


Subject(s)
Bulimia/therapy , Cognitive Behavioral Therapy/methods , Self-Help Groups , Adult , Female , Follow-Up Studies , Humans , Middle Aged , Videotape Recording
11.
Eff Clin Pract ; 4(3): 112-20, 2001.
Article in English | MEDLINE | ID: mdl-11434074

ABSTRACT

CONTEXT: Although evidence-based guidelines recommend that physicians inform men about prostate cancer screening, the most efficient way to do this is not known. OBJECTIVE: To evaluate whether a mailed educational pamphlet affected men's knowledge about early detection of prostate cancer. DESIGN: Randomized, controlled trial. SETTING: Primary care clinic of the Minneapolis VA Medical Center. PATIENTS: 342 men at least 50 years of age who responded to a mailed survey (overall response rate, 68%) and did not report a history of prostate cancer. INTERVENTION: "Early Prostate Cancer" pamphlet mailed to patients in the intervention group 1 week before their scheduled clinic appointments. OUTCOME MEASURES: Patients' responses to a survey mailed 1 week after their clinic appointments; prostate-specific antigen (PSA) testing determined from electronic medical records. RESULTS: Respondents were predominantly elderly white men (mean age, 71 years; 90% white) with chronic illnesses (48% described their health as "fair" or "poor"). Men who received the educational pamphlet were better informed than men in the usual care group, as measured by correct responses to the following three questions about prostate cancer screening: the natural history of prostate cancer (32% vs. 24%; P = 0.10), whether treatment lengthens lives of men with early prostate cancer (56% vs. 44%; P = 0.04), and accuracy of PSA testing (46% vs. 27%; P < 0.008). The overall proportion of correctly answered questions was greater in the intervention group (45% vs. 32%; P < 0.001). Testing for PSA in the year after the index clinic appointments did not differ significantly between the intervention group and the usual care group (31% vs. 37%; P > 0.2). CONCLUSIONS: Male veterans are poorly informed about the potential benefits and risks of prostate cancer screening. Although our mailed educational pamphlet enhanced knowledge only modestly, it was an inexpensive and easily implemented intervention.


Subject(s)
Health Education/methods , Mass Screening , Pamphlets , Prostatic Neoplasms/diagnosis , Aged , Data Collection , Evidence-Based Medicine , Health Knowledge, Attitudes, Practice , Health Promotion , Humans , Male , Middle Aged , Minnesota , Postal Service , Practice Guidelines as Topic , Prostate-Specific Antigen/analysis , Veterans/education
12.
Gut ; 48(4): 571-7, 2001 Apr.
Article in English | MEDLINE | ID: mdl-11247905

ABSTRACT

Measurements of luminal pH in the normal gastrointestinal tract have shown a progressive increase in pH from the duodenum to the terminal ileum, a decrease in the caecum, and then a slow rise along the colon to the rectum. Some data in patients with ulcerative colitis suggest a substantial reduction below normal values in the right colon, while limited results in Crohn's disease have been contradictory. Determinants of luminal pH in the colon include mucosal bicarbonate and lactate production, bacterial fermentation of carbohydrates and mucosal absorption of short chain fatty acids, and possibly intestinal transit. Alterations in these factors, as a result of mucosal disease and changes in diet, are likely to explain abnormal pH measurements in inflammatory bowel disease (IBD). It is conceivable that reduced intracolonic pH in active ulcerative colitis impairs bioavailability of 5-aminosalicylic acid from pH dependent release formulations (Asacol, Salofalk) and those requiring cleavage by bacterial azo reductase (sulphasalazine, olsalazine, balsalazide), but further pharmacokinetic studies are needed to confirm this possibility. Reports that balsalazide and olsalazine may be more efficacious in active and quiescent ulcerative colitis, respectively, than Asacol suggest that low pH may be a more critical factor in patients taking directly pH dependent release than azo bonded preparations. Reduced intracolonic pH also needs to be considered in the development of pH dependent colonic release formulations of budesonide and azathioprine for use in ulcerative and Crohn's colitis. This paper reviews methods for measuring gut pH, its changes in IBD, and how these may influence current and future therapies.


Subject(s)
Anti-Inflammatory Agents, Non-Steroidal/pharmacokinetics , Inflammatory Bowel Diseases/metabolism , Mesalamine/pharmacokinetics , Anti-Inflammatory Agents/pharmacokinetics , Anti-Inflammatory Agents/therapeutic use , Anti-Inflammatory Agents, Non-Steroidal/therapeutic use , Azathioprine/pharmacokinetics , Azathioprine/therapeutic use , Biological Availability , Budesonide/pharmacokinetics , Budesonide/therapeutic use , Catheterization , Electrodes , Humans , Hydrogen-Ion Concentration , Immunosuppressive Agents/pharmacokinetics , Immunosuppressive Agents/therapeutic use , Inflammatory Bowel Diseases/drug therapy , Mesalamine/therapeutic use , Reference Values , Telemetry
13.
Rev Environ Health ; 16(4): 253-61, 2001.
Article in English | MEDLINE | ID: mdl-12041881

ABSTRACT

Epidemiological studies have implicated smoking as a possible risk factor in the etiology of breast cancer, yet the evidence is not conclusive. We conducted meta-analyses of peer-reviewed studies published between 1984 and 2001 to assess the relation between smoking and breast cancer. The studies were located by searching the MEDLINE (1966 to 2001) and Cancer Abstracts (1980 to 2001) databases. Combined estimators of relative risk (RR) were calculated using fixed and random effect models. The combined RR for ever smokers was 1.10 (95% CI = 1.02-1.18). The association was stronger in premenopausal cases (RR = 1.21, CI = 1.08-1.36). The dose-response trend was significant but weak for the number of cigarettes smoked per day and for the duration of smoking. Early age at the start of smoking was associated with elevated risk (RR = 1.14, CI = 1.06-1.23). Our results suggest that smoking is a weak risk factor for breast cancer and the risk is higher in the premenopausal period and in those who started smoking at an early age.


Subject(s)
Breast Neoplasms/epidemiology , Smoking/epidemiology , Adolescent , Adult , Age of Onset , Breast Neoplasms/complications , Breast Neoplasms/etiology , Female , Humans , Premenopause , Risk Factors , Smoking/adverse effects
14.
Article in English | MEDLINE | ID: mdl-11089045

ABSTRACT

Smoothed particle applied mechanics (SPAM), also referred to as smoothed particle hydrodynamics, is a Lagrangian particle method for the simulation of continuous flows. Here we apply it to the formation of a liquid drop, surrounded by its vapor, for a van der Waals (vdW) fluid in two dimensions. The cohesive pressure of the vdW equation of state gives rise to an attractive, central force between the particles with an interaction range which is assumed to exceed the interaction range of all the other smoothed forces in the SPAM equations of motion. With this assumption, stable drops are formed, and the vdW phase diagram is well reproduced by the simulations. Below the critical temperature, the surface tension for equilibrated drops may be computed from the pressure excess in their centers. It agrees very well with the surface tension independently determined from the vibrational frequency of weakly excited drops. We also study strongly deformed drops performing large-amplitude oscillations, which are reminiscent of the oscillations of a large ball of water under microgravity conditions. In an appendix we comment on the limitations of SPAM by studying the violation of angular momentum conservation, which is a consequence of noncentral forces contributed by the full Newtonian viscous stress tensor.

15.
Int J Eat Disord ; 28(2): 131-8, 2000 Sep.
Article in English | MEDLINE | ID: mdl-10897074

ABSTRACT

OBJECTIVE: The purpose of this study was to identify predictors of short-term treatment outcome for individuals with binge eating disorder (BED). METHOD: Fifty women who met DSM-IV criteria for BED were enrolled in a manual-based group cognitive-behavioral therapy that consisted of fourteen 1-hr sessions over an 8-week period. Baseline measures included the frequency of self-reported binge eating from the Eating Behaviors-IV (EB-IV), severity of binge eating and dietary restraint using the Binge Eating Scale (BES) and Three-Factor Eating Questionnaire (TFEQ), depressive symptoms as assessed by the Beck Depression Inventory (BDI) and the Hamilton Depression Rating Scale (HDRS), and self-esteem as measured by the Rosenberg Self-Esteem Questionnaire (RSEQ). RESULTS: Logistic regression analyses indicated that the baseline frequency of self-reported episodes of binge eating that were objectively large predicted the likelihood of such episodes at the end of treatment. No variables predicted the likelihood of binge eating episodes that were objectively and subjectively large at the conclusion of treatment. DISCUSSION: This study indicates that the frequency of binge eating episodes at baseline is predictive of outcome status at the end of treatment, suggesting that meaningful prognostic factors in BED are identifiable.


Subject(s)
Cognitive Behavioral Therapy , Feeding and Eating Disorders/therapy , Adolescent , Adult , Aged , Female , Humans , Middle Aged , Predictive Value of Tests , Prognosis , Severity of Illness Index , Treatment Outcome
16.
Med Care ; 37(10): 1046-56, 1999 Oct.
Article in English | MEDLINE | ID: mdl-10524371

ABSTRACT

OBJECTIVE: To examine temporal trends and geographic variation in utilization of radical prostatectomy (RP) as well as 30-day mortality and complication rates. DESIGN: Administrative data-base study of radical prostatectomy (RP) using the Department of Veterans Affairs Patient Treatment File and Outpatient Clinic File between 1986 to 1996. Logistic regression was used to estimate temporal and geographic effects on the use of RP. SETTING: All Departments of Veterans Affairs Medical Centers (VAMC) in the contiguous United States. PATIENTS: Men aged 45 to 84 years who underwent RP at a VAMC (n = 13,398). MAIN OUTCOME MEASURES: Number and utilization of RP, rate of 30-day mortality, major cardiopulmonary or vascular complications, and colorectal injuries requiring surgical repair within 30 days of RP. RESULTS: From 1986 to 1996, the annual number of RP at VAMCs (range, 695-1,545 RP) more than doubled, and the rate of RP at VAMCs per male VA user increased by 40% (range, 48/100,000-66/100,000). After controlling for age and year, the utilization of RP in West North Central, Mountain, West South Central, and Pacific census divisions was 70%, 14%, 10%, and 8% higher, respectively, whereas the utilization of RP in New England, East North Central, and Mid-Atlantic divisions was 38%, 31%, and 25% lower, respectively, than the rest of the nation (P<0.001). Geographic variation in utilization decreased during the period between 1986 and 1996, but a twofold difference in RP utilization in 1996 remained between high- and low-utilization divisions. Major cardiopulmonary complications, vascular complications, and colorectal injuries occurred in 1.7%, 0.2%, and 1.8% of men, respectively. Thirty-day mortality was 0.73%, declined from 1986 to 1996, and was associated with a history of diabetes and congestive heart failure. CONCLUSION: Utilization of RP at VAMCs increased over time and varied across geographic areas. Thirty-day mortality was less than 1% and decreased with time. Differences in utilization may be caused by uncertainty regarding the effectiveness of early detection and treatment of prostate cancer.


Subject(s)
Hospitals, Veterans/statistics & numerical data , Prostatectomy/statistics & numerical data , Prostatic Neoplasms/surgery , Aged , Aged, 80 and over , Databases, Factual , Evaluation Studies as Topic , Hospital Mortality , Humans , Logistic Models , Male , Middle Aged , Postoperative Complications , Regional Medical Programs/statistics & numerical data , Treatment Outcome , United States , Utilization Review/statistics & numerical data
17.
Am J Psychiatry ; 155(11): 1556-60, 1998 Nov.
Article in English | MEDLINE | ID: mdl-9812117

ABSTRACT

OBJECTIVE: The purpose of this study was to determine the treatment history and cost of previous treatment among patients with comorbid substance-related disorder and dysthymia, as compared to patients with substance-related disorder only. METHOD: Retrospective data were obtained regarding past treatment. Treatment cost was calculated on the basis of the 1996 cost of various treatment modalities. The setting was alcohol-drug programs located within departments of psychiatry in two centers. A total of 642 patients were assessed, of whom 39 had substance-related disorder and dysthymia and 308 had substance-related disorder only (the remaining patients had other comorbid conditions). Data collection instruments included an interview-based questionnaire regarding previous psychiatric and substance abuse treatment. Current cost of treatment in various settings was assessed on the basis of a survey of facilities used by patients in this area. RESULTS: Patients with substance-related disorder and dysthymia had received more substance-related disorder treatment in 18 of 20 measures. Patients with substance-related disorder and dysthymia used 4.7 times more substance-related disorder treatment dollars than patients with substance-related disorder only, although their demographic characteristics were similar. Past self-help activities and pharmacotherapy were remarkably similar for both groups. Although substance-related disorder treatment differed considerably between the two groups of patients, other types of psychiatric treatment (i.e., non-substance-related treatment) did not differ between the two groups. CONCLUSIONS: Patients with substance-related disorder and dysthymia are referred to (or seek) substance-related disorder treatment more often than patients with substance-related disorder only but are referred to (or seek) non-substance-related psychiatric treatment no more often than patients with substance-related disorder only. The cost of previous substance-related disorder treatment was several times higher for the patients with substance-related disorder and dysthymia.


Subject(s)
Dysthymic Disorder/economics , Dysthymic Disorder/epidemiology , Health Care Costs , Substance-Related Disorders/economics , Substance-Related Disorders/epidemiology , Adult , Ambulatory Care/economics , Comorbidity , Disulfiram/economics , Disulfiram/therapeutic use , Drug Costs , Dysthymic Disorder/therapy , Female , Halfway Houses/economics , Hospitalization/economics , Humans , Length of Stay/economics , Male , Methadone/economics , Methadone/therapeutic use , Patient Acceptance of Health Care , Retrospective Studies , Substance-Related Disorders/therapy , Therapeutic Community
18.
Int J Eat Disord ; 24(3): 251-7, 1998 Nov.
Article in English | MEDLINE | ID: mdl-9741035

ABSTRACT

OBJECTIVE: The purpose of this study was to evaluate whether a history of purging behaviors in individuals with binge eating disorder (BED) is associated with increased comorbid psychopathology, dietary restraint, severity of eating pathology, and attitudinal disturbance in self-esteem and body image. METHOD: Sixty-three women meeting DSM-IV criteria for BED who were participating in a psychotherapy treatment study were subclassified according to whether they reported a history of purging behavior using self-induced vomiting or laxatives (HP; N = 24) or no such history (NHP; N = 39). The two groups were compared on the following variables: DSM-IV Axis I Lifetime diagnoses, Hamilton Depression Rating Scale, Body Shape Questionnaire, Three Factor Eating Questionnaire, Binge Eating Scale, and the Rosenberg Self-Esteem Scale. RESULTS: Data analyses revealed no significant differences between the two BED subgroups on any of the measures. DISCUSSION: These findings indicate that a history of purging behavior in BED is not associated with increased rates of comorbid psychopathology, severity of eating problems, dietary restraint, or attitudinal disturbance. Purging history does not appear to be a clinically meaningful variable with which to subclassify individuals with BED.


Subject(s)
Bulimia/psychology , Vomiting/psychology , Adult , Female , Humans , Middle Aged
19.
J Neuropsychiatry Clin Neurosci ; 10(3): 308-13, 1998.
Article in English | MEDLINE | ID: mdl-9706538

ABSTRACT

Veterans with chronic posttraumatic stress disorder were evaluated for a history of blast concussion, controlling for confounding conditions. Electroencephalograms were analyzed by discriminant function for traumatic brain injury. A difference was found in discriminant scores between veterans with and without blast concussion. More members of the blast group had attentional symptoms and attentional dysfunction. Combat veterans with a remote history of blast injury have persistent electroencephalographic features of traumatic brain injury as well as attentional problems. The authors hypothesize that these constitute a type of chronic postconcussive syndrome that has cognitive and mood symptoms overlapping those of posttraumatic stress disorder.


Subject(s)
Blast Injuries/diagnosis , Brain Concussion/diagnosis , Brain Damage, Chronic/diagnosis , Combat Disorders/diagnosis , Veterans/psychology , Adult , Aged , Attention Deficit Disorder with Hyperactivity/diagnosis , Attention Deficit Disorder with Hyperactivity/psychology , Blast Injuries/psychology , Brain Concussion/psychology , Brain Damage, Chronic/psychology , Combat Disorders/psychology , Electroencephalography , Humans , Male , Middle Aged , Neuropsychological Tests , Psychiatric Status Rating Scales , Risk Factors , Signal Processing, Computer-Assisted
20.
Int J Eat Disord ; 24(2): 125-36, 1998 Sep.
Article in English | MEDLINE | ID: mdl-9697011

ABSTRACT

OBJECTIVE: The purpose of this study was to compare three group cognitive-behavioral therapy (CBT) treatment models and a waiting list control condition (WL). METHOD: Sixty-one women who met DSM-IV criteria for binge eating disorder (BED) received treatment with the same cognitive-behavioral treatment manual in 14 one-hour sessions over an 8-week period. All sessions consisted of psychoeducation for the first 30 min and group discussion for the second half hour. In the therapist-led condition (TL; n = 16), a doctoral therapist led both the psychoeducational component and group discussion. In the partial self-help condition (PSH; n = 19), participants viewed a 30-min psychoeducational videotape, followed by participation in a therapist-led discussion. In the structured self-help condition (SH; n = 15), subjects viewed the 30-min psychoeducational videotape and subsequently led their own 30-min discussion. Eleven subjects were assigned to a wait-list control condition (WL). The primary outcome variables were frequency and duration of self-reported binge eating episodes. RESULTS: A mixed effects linear modeling (random regression) analysis indicated that subjects in all three active treatment conditions showed a decrease in binge eating symptoms over time. No group differences in rates of change over time were observed, although analysis of covariance indicated that all three treatment conditions showed significantly greater improvement in binge eating compared to the WL condition. DISCUSSION: The findings from this preliminary study suggest that CBT for BED can be delivered effectively in a structured group self-help format.


Subject(s)
Bulimia/therapy , Hyperphagia/therapy , Psychotherapy, Group , Adolescent , Adult , Aged , Bulimia/psychology , Combined Modality Therapy , Female , Humans , Hyperphagia/psychology , Internal-External Control , Middle Aged , Patient Education as Topic , Personality Inventory , Treatment Outcome
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