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1.
J Am Acad Dermatol ; 90(6): 1243-1245, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38296200
2.
JAMA Dermatol ; 158(7): 770-778, 2022 07 01.
Artículo en Inglés | MEDLINE | ID: mdl-35612849

RESUMEN

Importance: It has been suggested that Mohs surgery for skin cancer among individuals with limited life expectancy may be associated with needless risk and discomfort, along with increased health care costs. Objective: To investigate patient- and tumor-specific indications considered by clinicians for treatment of nonmelanoma skin cancer in older individuals. Design, Setting, and Participants: This multicenter, prospective cohort study was conducted using data from US private practice and academic centers. Included patients were those older than age 85 years presenting for skin cancer surgery and referred for Mohs surgery, with reference groups of those younger than age 85 years receiving Mohs surgery and those older than age 85 years not receiving Mohs surgery. Data were analyzed from November 2018 through January 2019. Exposures: Mohs surgery for nonmelanoma skin cancer. Main Outcomes and Measures: Reason for treatment selection. Results: Among 1181 patients older than age 85 years referred for Mohs surgery (724 [61.9%] men among 1169 patients with sex data; 681 individuals aged >85 to 88 years [57.9%] among 1176 patients with age data) treated at 22 sites, 1078 patients (91.3%) were treated by Mohs surgery, and 103 patients (8.7%) received alternate treatment. Patients receiving Mohs surgery were more likely to have tumors on the face (738 patients [68.5%] vs 26 patients [25.2%]; P < .001) and nearly 4-fold more likely to have high functional status (614 patients [57.0%] vs 16 patients [15.5%]; P < .001). Of 15 distinct reasons provided by surgeons for opting to proceed with Mohs surgery, the most common were patient desire for treatment with a high cure rate (712 patients [66.0%]), good or excellent patient functional status for age (614 patients [57.0%]), and high risk associated with the tumor based on histology (433 patients [40.2%]). Conclusions and Relevance: This study found that older patients who received Mohs surgery often had high functional status, high-risk tumors, and tumors located on the face. These findings suggest that timely surgical treatment may be appropriate in older patients given that their tumors may be aggressive, painful, disfiguring, and anxiety provoking.


Asunto(s)
Carcinoma Basocelular , Neoplasias Cutáneas , Anciano , Carcinoma Basocelular/patología , Carcinoma Basocelular/cirugía , Femenino , Humanos , Masculino , Cirugía de Mohs , Práctica Privada , Estudios Prospectivos , Piel/patología , Neoplasias Cutáneas/patología , Neoplasias Cutáneas/cirugía
3.
NPJ Microgravity ; 8(1): 10, 2022 Apr 13.
Artículo en Inglés | MEDLINE | ID: mdl-35418128

RESUMEN

Studying the effects of space travel on bone of experimental animals provides unique advantages, including the ability to perform post-mortem analysis and mechanical testing. To synthesize the available data to assess how much and how consistently bone strength and composition parameters are affected by spaceflight, we systematically identified studies reporting bone health in spacefaring animals from Medline, Embase, Web of Science, BIOSIS, and NASA Technical reports. Previously, we reported the effect of spaceflight on bone architecture and turnover in rodents and primates. For this study, we selected 28 articles reporting bone strength and composition in 60 rats and 60 mice from 17 space missions ranging from 7 to 33 days in duration. Whole bone mechanical indices were significantly decreased in spaceflight rodents, with the percent difference between spaceflight and ground control animals for maximum load of -15.24% [Confidence interval: -22.32, -8.17]. Bone mineral density and calcium content were significantly decreased in spaceflight rodents by -3.13% [-4.96, -1.29] and -1.75% [-2.97, -0.52] respectively. Thus, large deficits in bone architecture (6% loss in cortical area identified in a previous study) as well as changes in bone mass and tissue composition likely lead to bone strength reduction in spaceflight animals.

4.
NPJ Microgravity ; 7(1): 19, 2021 Jun 01.
Artículo en Inglés | MEDLINE | ID: mdl-34075059

RESUMEN

Animals in space exploration studies serve both as a model for human physiology and as a means to understand the physiological effects of microgravity. To quantify the microgravity-induced changes to bone health in animals, we systematically searched Medline, Embase, Web of Science, BIOSIS, and NASA Technical reports. We selected 40 papers focusing on the bone health of 95 rats, 61 mice, and 9 rhesus monkeys from 22 space missions. The percentage difference from ground control in rodents was -24.1% [Confidence interval: -43.4, -4.9] for trabecular bone volume fraction and -5.9% [-8.0, -3.8] for the cortical area. In primates, trabecular bone volume fraction was lower by -25.2% [-35.6, -14.7] in spaceflight animals compared to GC. Bone formation indices in rodent trabecular and cortical bone were significantly lower in microgravity. In contrast, osteoclast numbers were not affected in rats and were variably affected in mice. Thus, microgravity induces bone deficits in rodents and primates likely through the suppression of bone formation.

5.
Dermatol Surg ; 46(8): 1021-1029, 2020 08.
Artículo en Inglés | MEDLINE | ID: mdl-31929340

RESUMEN

BACKGROUND: The Affordable Care Act (ACA) and the appropriate use criteria (AUC) for Mohs micrographic surgery (MMS) had the potential to increase utilization rates of MMS for indicated skin cancers, but it is unknown whether this has occurred. OBJECTIVE: To determine whether rates of MMS utilization for head and neck melanoma in situ (MIS) and rare cutaneous tumors (RCTs) increased after the implementation of the ACA and AUC publication. MATERIALS AND METHODS: Retrospective review using data from the SEER database. Melanoma in situ and RCT tumor cases from before and after the ACA and AUC publication were compared. RESULTS: Twenty-four thousand six hundred seventy-eight cases were analyzed. Mohs micrographic surgery utilization for MIS decreased from 13.9% before the ACA to 12.3% after the ACA (odds ratio 0.87; p = .012). There was no significant change in MMS utilization for MIS after publication of the AUC. There was also no significant change in MMS utilization for treatment of RCT after the ACA or AUC publication. Stratification of patients into age groups younger or older than 65 years did not change utilization rates. CONCLUSION: Rates of MMS for treatment of MIS and RCT have not increased since the advent of the ACA or AUC. This finding highlights the need for continued efforts to improve access to MMS and to increase education of its utility in treating skin cancer.


Asunto(s)
Neoplasias de Cabeza y Cuello/cirugía , Melanoma/cirugía , Cirugía de Mohs/estadística & datos numéricos , Cirugía de Mohs/tendencias , Neoplasias Cutáneas/cirugía , Adulto , Anciano , Anciano de 80 o más Años , Femenino , Humanos , Renta , Masculino , Melanoma/patología , Persona de Mediana Edad , Patient Protection and Affordable Care Act , Áreas de Pobreza , Guías de Práctica Clínica como Asunto , Enfermedades Raras/cirugía , Programa de VERF , Neoplasias Cutáneas/patología , Estados Unidos , Adulto Joven
6.
Neurology ; 92(16): e1912-e1925, 2019 04 16.
Artículo en Inglés | MEDLINE | ID: mdl-30918097

RESUMEN

OBJECTIVE: To determine safety, tolerability, and pharmacokinetics of trofinetide and evaluate its efficacy in female children/adolescents with Rett syndrome (RTT), a debilitating neurodevelopmental condition for which no pharmacotherapies directed at core features are available. METHODS: This was a phase 2, multicenter, double-blind, placebo-controlled, parallel-group study, in which safety/tolerability, pharmacokinetics, and clinical response to trofinetide were characterized in 82 children/adolescents with RTT, aged 5 to 15 years. Sixty-two participants were randomized 1:1:1:1 to receive placebo twice a day (bid) for 14 days, followed by placebo, 50, 100, or 200 mg/kg bid of trofinetide for 42 days. Following blinded safety data review, 20 additional participants were randomized 1:1 to the 200 mg/kg or placebo bid groups. Safety assessments included adverse events, clinical laboratory tests, physical examinations, and concomitant medications. Clinician- and caregiver-based efficacy measurements assessed clinically relevant, phenotypic dimensions of impairment of RTT. RESULTS: All dose levels were well tolerated and generally safe. Trofinetide at 200 mg/kg bid showed statistically significant and clinically relevant improvements relative to placebo on the Rett Syndrome Behaviour Questionnaire, RTT-Clinician Domain Specific Concerns-Visual Analog Scale, and Clinical Global Impression Scale-Improvement. Exploratory analyses suggested that observed changes correlated with trofinetide exposure. CONCLUSION: These results, together with those from a previous adolescent/adult trial, indicate trofinetide's potential for treating core RTT symptoms and support further trials. CLASSIFICATION OF EVIDENCE: This study provides Class I evidence that for children/adolescents with RTT, trofinetide was safe, well-tolerated, and demonstrated improvement over placebo at 200 mg/kg bid in functionally important dimensions of RTT.


Asunto(s)
Antiinflamatorios no Esteroideos/farmacocinética , Antiinflamatorios no Esteroideos/uso terapéutico , Glutamatos/farmacocinética , Glutamatos/uso terapéutico , Ácido Glutámico/farmacocinética , Ácido Glutámico/uso terapéutico , Síndrome de Rett/tratamiento farmacológico , Adolescente , Antiinflamatorios no Esteroideos/efectos adversos , Niño , Preescolar , Método Doble Ciego , Femenino , Glutamatos/efectos adversos , Ácido Glutámico/efectos adversos , Humanos , Resultado del Tratamiento
7.
Am J Obstet Gynecol ; 195(1): 85-91, 2006 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-16626610

RESUMEN

OBJECTIVE: The objective of the study was to compare 3 different approaches for increasing clients' understanding of contraceptive effectiveness. STUDY DESIGN: We randomized 900 reproductive-age women in India and Jamaica to 1 of 3 charts presenting pregnancy risk. RESULTS: The most important reason for choosing a contraceptive was how well it prevents pregnancy (54%) followed by few side effects (17%). At baseline, knowledge about contraceptive effectiveness was poor. About half knew oral contraceptive pills are more effective than condoms (46%) and intrauterine devices are more effective than injectables (50%). All 3 charts improved knowledge significantly (P < .01) for these 2 questions. No chart improved knowledge better than any other (P > .05). The chart ranking contraceptive methods on a continuum was judged slightly easier to understand than the other 2 charts. CONCLUSION: Only with accurate understanding of pregnancy risk can clients make informed choices. Our results have already informed a global handbook for family planning providers to use the chart ranking contraceptive methods on a continuum.


Asunto(s)
Conducta de Elección , Conducta Anticonceptiva , Educación en Salud , Materiales de Enseñanza , Adolescente , Adulto , Comunicación , Consejo , Servicios de Planificación Familiar , Femenino , Humanos , India , Jamaica , Medición de Riesgo , Conducta de Reducción del Riesgo , Organización Mundial de la Salud
8.
Contraception ; 73(4): 399-403, 2006 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-16531175

RESUMEN

OBJECTIVE: To identify factors related to consistency between women's "most important" reason for using contraception and their current contraceptive method. METHODS: A sample of 433 women completed a written questionnaire on demographics, contraceptive use history and the "most important" reason for using contraception. Women were grouped by whether their current contraceptive method "agreed" or "disagreed" with their "most important" reason for contracepting. Multivariable regression was used to identify factors associated with consistency between stated "most important" reason and current method used ("agreed"). RESULTS: Current contraceptive method was inconsistent with the "most important" reason for using a method in 25% of women. Demographic characteristics and knowledge of contraceptive effectiveness did not differ between the "agreed" and "disagreed" groups. Women using a method consistent with their reason were more likely to have discussed contraception with a health care provider (RR=1.59, 95% CI 1.13-2.25) even after adjusting for source of contraceptive method or source of contraceptive information (RR=1.57, 95% CI 1.10-2.23). CONCLUSION: Contact with a health care provider was the only factor associated with consistency between birth control method and reasons for initiating contraception. This association appears to be independent of knowledge about contraceptive effectiveness.


Asunto(s)
Anticoncepción/métodos , Anticoncepción/psicología , Personal de Salud , Satisfacción del Paciente , Adolescente , Adulto , Estudios Transversales , Femenino , Humanos , Rol del Médico , Embarazo , Análisis de Regresión , Enfermedades de Transmisión Sexual/prevención & control , Encuestas y Cuestionarios
9.
Contraception ; 72(3): 187-91, 2005 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-16102553

RESUMEN

OBJECTIVES: We conducted a feasibility study to enroll and follow family planning acceptors who were randomly assigned to use an intrauterine device (IUD) or injectable depot-medroxyprogesterone acetate (DMPA). METHODS: Centers in Brazil, Guatemala, Egypt and Vietnam aimed to enroll 100 participants per site. Enrolled women were randomly assigned to have inserted a TCu 380A IUD, or to receive injections of 150 mg of DMPA every 3 months, and scheduled for up to 12 months of follow-up. We tested for cervical infection at first and final visits, and examined for signs of pelvic inflammatory disease (PID) at each visit. RESULTS: The sites screened 555 women and enrolled 368. Two women (0.5%) had three discomfort signs of PID during follow-up. The prevalence of gonorrhea at each woman's final follow-up visit was 0.5%, and the prevalence of chlamydia at final visit was 5.4%. Sixty-eight percent of women either completed 12 months of observation with their assigned method or were still using their method at the end of the study. CONCLUSION: A larger, definitive clinical trial appears feasible. The majority of women we approached agreed to participate; nearly 400 women were enrolled; two thirds continued to use their assigned method until study closeout; and the STI risk was moderate.


Asunto(s)
Anticonceptivos Femeninos/administración & dosificación , Dispositivos Intrauterinos de Cobre/efectos adversos , Acetato de Medroxiprogesterona/administración & dosificación , Enfermedad Inflamatoria Pélvica/etiología , Adolescente , Adulto , Infecciones por Chlamydia , Estudios de Factibilidad , Femenino , Gonorrea , Humanos , Proyectos Piloto
10.
Contraception ; 71(6): 438-42, 2005 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-15914133

RESUMEN

OBJECTIVE: To examine the acceptability of five nonoxynol-9 (N-9) spermicides. METHODS: We analyzed data from a randomized trial of five products, including three gels containing different amounts of N-9 per dose, a film and a suppository. In the trial, 1536 participants were asked to use the assigned spermicide for 7 months and to complete questionnaires 4 weeks after admission and at discontinuation. RESULTS: Overall, 43% of participants liked their spermicide "very much." This proportion was higher in the three gel groups than in the suppository and film groups. Difficulty with insertion, messiness and discontent with timing of insertion were common complaints in all groups. After adjustment for selected baseline factors, acceptability on the first questionnaire was not related to duration or consistency of subsequent spermicide use or to subsequent time to pregnancy. CONCLUSIONS: In this study, all five spermicides were considered acceptable by most users. Acceptability did not appear to influence spermicide use or pregnancy risk.


Asunto(s)
Nonoxinol/administración & dosificación , Adulto , Femenino , Geles/administración & dosificación , Humanos , Satisfacción del Paciente , Espermicidas/administración & dosificación , Supositorios/administración & dosificación , Encuestas y Cuestionarios , Resultado del Tratamiento , Estados Unidos , Cremas, Espumas y Geles Vaginales/administración & dosificación
11.
Obstet Gynecol ; 102(4): 709-17, 2003 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-14551000

RESUMEN

OBJECTIVE: To determine which of three different approaches increased women's understanding of risk of pregnancy associated with different contraceptive methods. METHODS: We randomly assigned 461 reproductive-age women to one of three tables presenting pregnancy risk (Food and Drug Administration table with numbers, World Health Organization table with numbers and categories, or table with categories). We evaluated participant knowledge before and after being shown the assigned table. RESULTS: The most important reason for choosing a contraceptive was how well it works (53%), followed by ease of use (13%), and protection against sexually transmitted disease or human immunodeficiency virus (11%). Before looking at the tables, about half the participants knew that hormone shots are more effective than pills (48%) and that pills are more effective than condoms (57%). For these two key comparisons, the category table compared to the Food and Drug Administration table with numbers improved knowledge significantly more (37% versus 20% and 27% versus 14%; both P <.05). Compared with those assigned to the Food and Drug Administration table with numbers, significantly fewer participants assigned to the category table said the table was difficult to read (6% versus 19%; P <.01). Most participants in all three groups said their assigned table provided enough information to choose a contraceptive method. CONCLUSION: The table with categories communicated relative contraceptive effectiveness better than the tables with numbers. However, without being presented with numbers, participants grossly overestimated the absolute risk of pregnancy using contraceptives. A combination of categories and a general range of risk for each category may provide the most accurate understanding of both relative and absolute pregnancy risk.


Asunto(s)
Comunicación , Anticonceptivos , Toma de Decisiones , Educación del Paciente como Asunto , Adolescente , Adulto , Femenino , Humanos , Embarazo , Conducta de Reducción del Riesgo , Enfermedades de Transmisión Sexual/prevención & control , Encuestas y Cuestionarios , Materiales de Enseñanza
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