RESUMO
PURPOSE: OSA-COPD overlap is an important and prevalent condition yet remains under-recognised among the vast majority of respiratory health professionals. Patients with OSA-COPD overlap experience more severe respiratory symptoms and worse quality of life, and the relative risk of exacerbations, hospitalisations, and mortality is higher than in either disease state alone. METHODS: Electronic databases PUBMED and Google Scholar were searched for studies and academic papers that discussed OSA-COPD overlap. Relevant papers that discussed prevalence, pathophysiology, microbiome studies, treatment regimens and outcomes were included in this paper. RESULTS: High-risk patients with either COPD or OSA should be screened for overlap syndrome as part of routine clinical practice. Screening questionnaires can identify high-risk patients with COPD who may benefit from formal polysomnography. Patients with OSA who are aged over 40 with a significant smoking history or environmental exposures have an increased pre-test probability of obstructive airway disease. The potential roles of gastro-oesophageal reflux disease and lung-gut microbiome are evolving and merit further investigation. A tailored approach to reach a timely diagnosis and thus optimisation of both conditions are key to management. CPAP is the primary therapy for OSA; however, patients with more advanced COPD, with daytime hypercapnia or severe nocturnal desaturations, may benefit from bilevel positive airway pressure. CONCLUSION: Increased awareness, access to timely investigations and initiation of therapy will improve overall outcomes in OSA-COPD overlap by reducing hospitalisations for exacerbations of COPD and improve mortality rates.
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Doença Pulmonar Obstrutiva Crônica , Apneia Obstrutiva do Sono , Humanos , Adulto , Pessoa de Meia-Idade , Apneia Obstrutiva do Sono/diagnóstico , Apneia Obstrutiva do Sono/epidemiologia , Apneia Obstrutiva do Sono/terapia , Prevalência , Doença Pulmonar Obstrutiva Crônica/diagnóstico , Doença Pulmonar Obstrutiva Crônica/epidemiologia , Doença Pulmonar Obstrutiva Crônica/terapia , Qualidade de Vida , Pressão Positiva Contínua nas Vias AéreasRESUMO
PURPOSE: Radial scars and complex sclerosing lesions of the breast are part of a group of "indeterminate" breast lesions, which are excised due to risk of coexistent carcinoma. The aim of this study was to assess rate of upgrade of these lesions to invasive and in situ carcinoma and to quantify the risk of development of subsequent cancer in women diagnosed with these lesions. METHODS: A retrospective review of a prospectively maintained breast screening database was performed. All patients with radial scar identified at either core biopsy or final excision biopsy between January 2006 and July 2012 were identified. Full pathological reports for both core biopsy and final excision biopsy were reviewed. Patient outcomes were followed for a mean of 117.1 months. RESULTS: Of 451 B3 biopsies performed at our screening unit, 95 (22%) were found to have a radial scar or complex sclerosing lesion (CSL) on core needle biopsy. Within this group, 77 had no atypia on CNB, with 7 (9%) upgraded to invasive/in situ carcinoma on final excision. Of nine with definite atypia on CNB, 3 (33%) were upgraded. In those patients without atypia or malignancy on final excision, 7.5% developed cancer during 10-year follow-up. CONCLUSION: Patients with radial scar with atypia have a higher risk of upgrade to malignancy. Further research is needed to identify which patients may safely avoid excision of radial scar. Patients with a diagnosis of radial scar on CNB are at increased subsequent risk of breast cancer and may benefit from additional screening.
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Neoplasias da Mama , Cicatriz , Biópsia com Agulha de Grande Calibre , Mama/patologia , Mama/cirurgia , Neoplasias da Mama/diagnóstico , Neoplasias da Mama/epidemiologia , Neoplasias da Mama/patologia , Cicatriz/diagnóstico , Cicatriz/epidemiologia , Cicatriz/etiologia , Feminino , Humanos , Estudos RetrospectivosRESUMO
BACKGROUND: Young age at breast cancer diagnosis is associated with negative prognostic outcomes, and breast cancer in black women often manifests at a young age. This study evaluated the effect of age on breast cancer management and outcomes in black women. METHODS: This was a retrospective cohort study of all black women treated for invasive breast cancer between 2005 and 2010 at a specialized tertiary-care cancer centre. Clinical and treatment characteristics were compared by age. Kaplan-Meier methodology was used to estimate overall survival (OS) and disease-free survival (DFS). RESULTS: A total of 666 black women were identified. Median BMI was 30 (range 17-56) kg/m2 and median tumour size was 16 (1-155) mm. Most tumours were oestrogen receptor-positive (66·4 per cent). Women were stratified by age: less than 40 years (74, 11·1 per cent) versus 40 years or more (592, 88·9 per cent). Younger women were significantly more likely to have a mastectomy, axillary lymph node dissection and to receive chemotherapy, and were more likely to have lymphovascular invasion and positive lymph nodes, than older women. The 5-year OS rate was 88·0 (95 per cent c.i. 86·0 to 91·0) per cent and the 5-year DFS rate was 82·0 (79·0 to 85·0) per cent. There was no statistically significant difference in OS by age (P = 0·236). Although DFS was inferior in younger women on univariable analysis (71 versus 88 per cent; P < 0·001), no association was found with age on multivariable analysis. CONCLUSION: Young black women with breast cancer had more adverse pathological factors, received more aggressive treatment, and had worse DFS on univariable analysis. Young age at diagnosis was, however, not an independent predictor of outcome.
ANTECEDENTES: El diagnóstico de cáncer de mama a una edad joven se asocia con un pronóstico de resultados negativo, y en mujeres de raza negra, el cáncer de mama con frecuencia se manifiesta a edades tempranas. Este estudio analiza el efecto de la edad en el tratamiento y resultados del cáncer de mama en mujeres de raza negra. MÉTODOS: Estudio de cohortes retrospectivo de todas las mujeres de raza negra tratadas por cáncer de mama invasivo entre 2005-2010 en un centro oncológico terciario de alta especialización. Se compararon las características clínicas y del tratamiento en función de la edad. Se estimó la supervivencia global (overall survival, OS) y la supervivencia libre de enfermedad (disease-free survival, DFS) con el método de Kaplan-Meier y se utilizó la prueba de log-rank para las comparaciones entre grupos. RESULTADOS: Se identificaron un total de 666 mujeres de raza negra. La mediana del tamaño del tumor fue de 16 mm (rango 1-155 mm). La mayoría de los tumores fueron positivos para el receptor de estrógenos (66,4%); la mediana del índice de masa corporal (IMC) fue 30 kg/m2 (rango 17,2-56,5). Se estratificaron a las mujeres por su edad: < 40 años (n = 74; 11,1%) frente a ≥ 40 años (n = 592; 88,9%). La probabilidad de recibir una mastectomía, un vaciamiento ganglionar axilar y quimioterapia fue significativamente superior en las pacientes jóvenes y además fueron más propensas a presentar invasión linfovascular y ganglios linfáticos positivos en comparación con las mujeres mayores. Las OS y DFS a los 5 años fueron del 88,0% (i.c. del 95% 86-91%) y del 82% (i.c. del 95% 79-85%), respectivamente. No se observaron diferencias estadísticamente significativas en la OS (P = 0,236) en función de la edad. Aunque en el análisis univariado la DFS fue peor en las mujeres jóvenes (71% versus 88%, log-rank P < 0,001), en el análisis multivariable no se confirmó la asociación con la edad. CONCLUSIÓN: Las mujeres jóvenes de raza negra con cáncer de mama tuvieron más factores patológicos adversos, recibieron un tratamiento más agresivo y tuvieron una DFS peor en el análisis univariado. Sin embargo, la edad temprana en el momento del diagnóstico no fue un factor predictivo independiente del resultado.
Assuntos
Negro ou Afro-Americano , Neoplasias da Mama/etnologia , Adulto , Idade de Início , Idoso , Idoso de 80 Anos ou mais , Neoplasias da Mama/diagnóstico , Neoplasias da Mama/mortalidade , Neoplasias da Mama/terapia , Terapia Combinada , Feminino , Seguimentos , Humanos , Pessoa de Meia-Idade , Cidade de Nova Iorque/epidemiologia , Prognóstico , Estudos Retrospectivos , Análise de SobrevidaRESUMO
INTRODUCTION: Axillary status remains an important prognostic indicator in breast cancer. Certain patients with a positive sentinel node (SLNB) may not benefit from axillary clearance (AC). Uncertainty remains if this approach could be applied to patients diagnosed with axillary metastases on ultrasound-guided fine needle aspiration cytology (USFNAC). The aim of this study was to compare nodal burden in patients with positive USFNAC and a positive SLNB. METHODS: A retrospective study was performed involving all BC patients between 2007 and 2014 who had either pre-operative USFNAC or a SLNB. Patient/tumour characteristics and nodal burden were examined in all patients proceeding to AC. RESULTS: 974 patients were eligible for analysis. 439 patients (45 %) had positive USFNAC and 535 (55 %) had a positive SLNB. USFNAC-positive patients were more likely to undergo mastectomy (Chi-square test; p < 0.001), have extra-nodal extension (p < 0.001), be oestrogen receptor negative (p < 0.001) and be HER2 positive (p < 0.001). The median total number of lymph nodes (LNs) excised during AC was higher in the USFNAC group (Mann-Whitney test; 23 vs. 21; p < 0.001). The median total number of involved LNs was 3 (range 1-47) in FNAC-positive patients versus 1 (range 1-37) in SLNB-positive patients (p < 0.001). The median number of involved LNs in level 1 was 3 in FNAC-positive patients versus 1 in SLNB-positive patients (p < 0.001). Within the SLN-positive group, 49 % of the patients had only one involved LN, 28 % had two nodes involved and 23 % had ≥3. In comparison, within the FNAC-positive group only 13 % of the patients had one involved LN, 12 % had two nodes involved and 74 % had ≥3. CONCLUSION: Patients with positive USFNAC have more aggressive clinico-pathological characteristics and higher nodal burden compared to SLNB-positive patients. Currently, the authors advocate that patients not receiving neoadjuvant chemotherapy, with a positive USFNAC, should proceed directly to an axillary ALND.
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Biópsia por Agulha Fina , Neoplasias da Mama/patologia , Biópsia Guiada por Imagem , Linfonodos/patologia , Biópsia de Linfonodo Sentinela , Ultrassonografia de Intervenção , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Excisão de Linfonodo , Metástase Linfática/patologia , Pessoa de Meia-Idade , Estudos Retrospectivos , Adulto JovemRESUMO
BACKGROUND: Although breast conservation surgery, when combined with radiotherapy, has been shown to provide excellent locoregional control for breast cancer, approximately one third of women with breast cancer require mastectomy. Many of these women are offered immediate reconstruction. Postmastectomy radiotherapy (PMRT) is indicated in some cases, but is associated with side-effects, including its impact on the reconstructed breast. OBJECTIVE: To review the pertinent issues surrounding PMRT, including patient selection for radiotherapy and the effect of radiotherapy on reconstructive decisions. METHODS: A literature review was performed using the Medline database. CONCLUSIONS: PMRT is indicated in patients who are deemed to have a high risk of loco-regional recurrence. Although PMRT is strongly recommended for patients with four or more positive lymphnodes, other indications for PMRT remain controversial. Immediate reconstruction post mastectomy has been shown to have favorable outcomes. However, PMRT may increase the need for revision surgery post immediate reconstruction. There are few randomized trials looking at these key issues, and the evidence is largely derived from observational retrospective studies. Patients should be carefully counseled before a decision is made to proceed with immediate reconstruction, where there is a high chance that PMRT may be indicated.
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Neoplasias da Mama/radioterapia , Neoplasias da Mama/cirurgia , Mamoplastia , Mastectomia , Recidiva Local de Neoplasia/prevenção & controle , Radioterapia Adjuvante , Terapia Combinada , Feminino , Humanos , Radioterapia Adjuvante/efeitos adversos , Radioterapia Adjuvante/métodosRESUMO
To examine the indirect effects of fishing on energy allocation in non-target prey species, condition and reproductive potential were measured for five representative species (two-spot red snapper Lutjanus bohar, arc-eye hawkfish Paracirrhites arcatus, blackbar devil Plectroglyphidodon dickii, bicolour chromis Chromis margaritifer and whitecheek surgeonfish Acanthurus nigricans) from three reef-fish communities with different levels of fishing and predator abundance in the northern Line Islands, central Pacific Ocean. Predator abundance differed by five to seven-fold among islands, and despite no clear differences in prey abundance, differences in prey condition and reproductive potential among islands were found. Body condition (mean body mass adjusted for length) was consistently lower at sites with higher predator abundance for three of the four prey species. Mean liver mass (adjusted for total body mass), an indicator of energy reserves, was also lower at sites with higher predator abundance for three of the prey species and the predator. Trends in reproductive potential were less clear. Mean gonad mass (adjusted for total body mass) was high where predator abundance was high for only one of the three species in which it was measured. Evidence of consistently low prey body condition and energy reserves in a diverse suite of species at reefs with high predator abundance suggests that fishing may indirectly affect non-target prey-fish populations through changes in predation and predation risk.
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Recifes de Corais , Peixes/fisiologia , Cadeia Alimentar , Animais , Pesqueiros , Peixes/anatomia & histologia , Gônadas/anatomia & histologia , Fígado/anatomia & histologia , Tamanho do Órgão , Ilhas do Pacífico , Densidade Demográfica , Dinâmica Populacional , Comportamento Predatório , ReproduçãoRESUMO
BACKGROUND: Though the skin is affected in sarcoidosis in about one-third of cases, granulomatous tattoo reactions are an unusual manifestation of the disease. It is important phenomenon to recognize, as it frequently leads to the diagnosis of systemic sarcoidosis. CASE PRESENTATION: A 35-year-old Caucasian female with multiple tattoos presented with a 5-week history of tenderness of the black dye in a tattoo depicting a dragon. She also described a 15-month history of fatigue, polyarthralgia, and mild dyspnea. Skin biopsy demonstrated multiple dermal non-caseating granulomata with associated tattoo ink. Further investigation revealed the presence of systemic sarcoidosis. Her symptoms and skin changes improved with conservative management. CONCLUSION: Sarcoidal tattoo reactions in those without systemic sarcoidosis are a rare occurrence, and their presence should prompt a search for systemic involvement. The accurate identification of skin involvement in sarcoidosis is important, as it tends to occur early in the course of disease, and the skin is a readily accessible site for biopsy, allowing for prompt diagnosis.
Assuntos
Sarcoidose/diagnóstico , Dermatopatias/patologia , Tatuagem , Adulto , Biópsia , Feminino , Granuloma/patologia , Humanos , Pele/patologiaRESUMO
OBJECTIVE: To determine whether blood pressure is reduced for at least 6 months with an intervention to lower alcohol intake in moderate to heavy drinkers with above optimal to slightly elevated diastolic blood pressure, and whether reduction of alcohol intake can be maintained for 2 years. DESIGN: A randomized controlled trial. METHODS: Six hundred forty-one outpatient veterans with an average intake of 3 or more alcoholic drinks per day in the 6 months before entry into the study and with diastolic blood pressure 80 to 99 mm Hg were randomly assigned to a cognitive-behavioral alcohol reduction intervention program or a control observation group for 15 to 24 months. The goal of the intervention was the lower of 2 or fewer drinks daily or a 50% reduction in intake. A subgroup with hypertension was defined as having a diastolic blood pressure of 90 to 99 mm Hg, or 80 to 99 mm Hg if recently taking medication for hypertension. RESULTS: Reduction in average weekly self-reported alcohol intake was significantly greater (P<.001) at every assessment from 3 to 24 months in the intervention group vs the control group: levels declined from 432 g/wk at baseline by 202 g/wk in the intervention group and from 445 g/wk by 78 g/wk in the control group in the first 6 months, with similar reductions after 24 months. The intervention group had a 1.2/0.7-mm Hg greater reduction in blood pressure than the control group (for each, P = .17 and P = .18) for the 6-month primary end point; for the hypertensive stratum the difference was 0.9/0.7 mm Hg (for each, P = .58 and P = .44). CONCLUSIONS: The 1.3 drinks per day average difference between changes in self-reported alcohol intake observed in this trial produced only small nonsignificant effects on blood pressure. The results from the Prevention and Treatment of Hypertension Study (PATHS) do not provide strong support for reducing alcohol consumption in nondependent moderate drinkers as a sole method for the prevention or treatment of hypertension.
Assuntos
Consumo de Bebidas Alcoólicas , Hipertensão/terapia , Adulto , Idoso , Pressão Sanguínea/efeitos dos fármacos , Etanol/farmacologia , Feminino , Humanos , Hipertensão/prevenção & controle , Masculino , Pessoa de Meia-Idade , Fatores de TempoRESUMO
OBJECTIVES: To study patients with ALS to determine how physical function, quality of life (QOL), and spirituality or religiousness change over time, and what relationship these changes have to one another. METHODS: Sixty patients with ALS were studied prospectively. They were assessed at baseline, 3 months, and 6 months, using questionnaires designed to measure general quality of life (McGill Quality of Life questionnaire), religiosity (Idler Index of Religiosity), ALS-specific health-related quality of life (SIP/ALS-19), and ALS-specific function (ALS functional rating scale). RESULTS: A two-way repeated measures multivariate analysis of variance revealed that both the passage of time and the specific QOL scales used were factors in predicting patient quality of life (F[1, 59]= 9.87, p < 0.003 and F[3, 177]= 16.90, p < 0.001) Despite a progressive decline in physical function as measured by the ALS-specific function score, the general QOL and religiosity scores changed little. In contrast, the ALS-specific health-related QOL score declined in parallel with the ALS-specific function score. CONCLUSIONS: QOL in patients with ALS appears to be independent of physical function, which agrees with a previous cross-sectional study. The ALS-specific health-related QOL score is primarily a measure of physical function. QOL instruments that assess spiritual, religious, and psychological factors produce different results than those obtained using measures of physical function alone.
Assuntos
Esclerose Lateral Amiotrófica/fisiopatologia , Qualidade de Vida , Religião , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Estudos Longitudinais , Masculino , Pessoa de Meia-Idade , Estudos ProspectivosRESUMO
OBJECTIVES: To study patients with ALS to determine the following: 1) the relationship between physical function and quality of life (QOL); 2) the instruments that best reflect patients' own ratings of QOL; and 3) whether spiritual/religious factors play a role in determining QOL. METHODS: The authors prospectively studied 96 patients with ALS using several instruments, including the McGill Quality of Life (MQOL) instrument, the Idler Index of Religiosity, the Sickness Impact Profile (SIP)/ALS-19, and several measures of strength and physical function. RESULTS: QOL as assessed by patients (MQOL single item score) did not correlate with measures of physical function and strength, but correlated with the total MQOL score (p < 0.0005), the psychological and existential subscores of MQOL (p < 0. 0005), the support subscore of MQOL (p = 0.001), and the total Idler score (p = 0.001). In contrast, correlations between SIP/ALS-19 and these measures were not significant, although SIP/ALS-19 correlated with measures of physical function and strength. CONCLUSIONS: QOL, as assessed by the patient with ALS, does not correlate with measures of strength and physical function, but appears to depend on psychological and existential factors, and thus may be measured well by the MQOL scale. Spiritual factors and support systems appear to play roles as well. SIP/ALS-19 is a good measure of physical function, but not of overall QOL.
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Atividades Cotidianas , Esclerose Lateral Amiotrófica/psicologia , Qualidade de Vida , Religião e Medicina , Adulto , Idoso , Idoso de 80 Anos ou mais , Esclerose Lateral Amiotrófica/reabilitação , Feminino , Humanos , Masculino , Pessoa de Meia-IdadeRESUMO
The histopathology of eyes with uveal melanoma was compared in a masked fashion in 47 eyes whose primary treatment was enucleation and a matched series of 47 eyes enucleated after proton beam irradiation. Irradiated tumors were more likely to show signs of necrosis (P less than .001) and fibrosis (P = .005) and to have balloon cells present (P = .002). In the irradiated group, mitotic figures were fewer in 40 high-power fields (P = .020), and the prevalence of tumor blood vessel damage (P less than .001) was higher. Changes in the retina were more common in the irradiated series, but damage was usually overlying or in close proximity to the tumor. Based on characteristic changes, the pathologist distinguished irradiated from nonirradiated eyes in 85% of the cases. These findings suggest that irradiation damages tumor cells and blood vessels, and alters the tumor's capacity for cellular reproduction.
Assuntos
Enucleação Ocular , Melanoma/cirurgia , Neoplasias Uveais/cirurgia , Adulto , Idoso , Humanos , Hiperplasia , Melanoma/patologia , Melanoma/radioterapia , Pessoa de Meia-Idade , Mitose , Necrose , Recidiva Local de Neoplasia , Complicações Pós-Operatórias , Prognóstico , Prótons , Lesões por Radiação , Retina/patologia , Neoplasias Uveais/patologia , Neoplasias Uveais/radioterapiaRESUMO
Nanospheres synthesized by salt-induced complex coacervation of cDNA and polycations such as gelatin and chitosan were evaluated as gene delivery vehicles. DNA-nanospheres in the size range of 200-750 nm could transfect a variety of cell lines. Although the transfection efficiency of the nanospheres was typically lower than that of lipofectamine and calcium phosphate controls in cell culture, the beta-gal expression in muscle of BALB/c mice was higher and more sustained than that achieved by naked DNA and lipofectamine complexes. This gene delivery system has several attractive features: (1) ligands can be conjugated to the nanosphere for targeting or stimulating receptor-mediated endocytosis; (2) lysosomolytic agents can be incorporated to reduce degradation of the DNA in the endosomal and lysosomal compartments; (3) other bioactive agents or multiple plasmids can be co-encapsulated; (4) bioavailability of the DNA can be improved because of protection from serum nuclease degradation by the polymeric matrix; (5) the nanosphere can be lyophilized for storage without loss of bioactivity.
Assuntos
DNA/administração & dosagem , Vetores Genéticos , Transfecção , Animais , Disponibilidade Biológica , Linhagem Celular , DNA/farmacocinética , Humanos , Camundongos , Camundongos Endogâmicos BALB C , Microesferas , Tamanho da Partícula , Poliaminas , PolieletrólitosRESUMO
Because familial occurrences of uveal melanoma are rare, there have only been 15 cases of familial melanoma reported in the literature. We studied 11 additional families with a total of 24 members, in which two or more members were afflicted with uveal melanoma. The median age at diagnosis was 56.5 years, similar to the median age at diagnosis of the remaining patients treated in our institution. Thirteen were male and 11 were female, which is consistent with the slight predominance of males found in many large surveys of patients with uveal melanoma. There is a possibility of a heritable component present in these families.
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Neoplasias da Coroide/genética , Melanoma/genética , Adulto , Idoso , Idoso de 80 Anos ou mais , Neoplasias da Coroide/terapia , Enucleação Ocular , Feminino , Humanos , Masculino , Melanoma/terapia , Pessoa de Meia-Idade , Neoplasias/genética , Linhagem , Taxa de SobrevidaRESUMO
PURPOSE: Because limited data exist on the incidence of lens changes after therapeutic intraocular irradiation, we studied a group of patients who underwent proton irradiation for uveal melanoma, in order to estimate cumulative rates of radiation-induced posterior subcapsular opacities and age-related lens changes at specific time points. after irradiation. METHODS: Cumulative rates for each type of opacity were estimated from among the 383 patients, treated between 1987 and 1989, who had clear lenses or minimal lens changes before irradiation. Cox's proportional hazards model was used to evaluate the independent effects of tumor and treatment-related characteristics on the development of posterior subcapsular opacities in these patients. Risk factors for posterior subcapsular opacities were evaluated. RESULTS: By three years after irradiation, posterior subcapsular opacities had developed in 42% of the patients, and rates increased significantly with lens dose and with tumor height. The risk of posterior subcapsular opacities was over three times higher when the lens received a substantial dose of irradiation (adjusted relative risk, 3.25; 95% confidence interval, 1.60-6.59), as compared with minimal dose, and was three times higher when the tumor was highly elevated (adjusted relative risk, 3.05; 95% confidence interval, 1.45-6.40) as compared with minimally elevated lesions. Opacities in the other segments of the lens were age related. CONCLUSIONS: These data show that patients receiving therapeutic intraocular irradiation have a high risk of developing posterior subcapsular opacities. As expected, the leading risk determinant of posterior subcapsular change is the amount of irradiation received by the lens.
Assuntos
Catarata/etiologia , Cristalino/efeitos da radiação , Melanoma/radioterapia , Lesões por Radiação/etiologia , Neoplasias Uveais/radioterapia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Modelos de Riscos Proporcionais , Prótons , Radioterapia/efeitos adversos , Dosagem Radioterapêutica , Fatores de RiscoRESUMO
Cats were implanted with two-channel scala tympani bipolar electrode arrays consisting of four PtIr wires in a molded silicone rubber carrier. The electrically evoked auditory brainstem response (ABR) was recorded to monitor the physiological response to biphasic pulsatile stimulation in these chronic preparations. Baseline data were collected over a 1-6 month period. Animals were then subjected to a long period of continuous high level stimulation delivered through a system designed to insure delivery of charge-balanced biphasic waveforms. Subsequent changes in physiological response were interpreted as indicating electrically induced damage to the cochlea. Localized loss of hair cells and growth of connective tissue resulted from the implantation of scala tympani inserts. Electrically evoked ABR responses were not altered by the long-term presence of the electrode, nor by the presence of intervening connective tissue. Physiological manifestations of stimulus-induced change appeared only after hundreds of hours of continuous stimulation. Apparent functional damage was not suspended or reversed with cessation of stimulation, but rather continued for several hundred hours after the stimulation was terminated. Deterioration of physiological response was accompanied by two deleterious histological changes: (a) bone growth within the scala tympani; and (b) loss of nerve fibers and spiral ganglion cells. Both of these changes were restricted to an area corresponding to the implant intracochlear location and were most marked in the region adjacent to the chronically stimulated electrode pair. In cases where stimuli were not charge balanced or surgical trauma was incurred, bone growth was most extensive and nerve damage most pervasive. The data from cases stimulated at lower levels of charge density, i.e. 20-40 muC/cm2, suggest that these may be more feasible levels for safe chronic electrical stimulation in scala tympani.
Assuntos
Estimulação Acústica/efeitos adversos , Cóclea/patologia , Estimulação Elétrica/efeitos adversos , Nervo Vestibulococlear/fisiologia , Animais , Osso e Ossos , Gatos , Coristoma , Cóclea/fisiopatologia , Neoplasias da Orelha/etiologia , Eletrodos Implantados , Potenciais Evocados Auditivos , Transtornos da Audição/etiologia , Fibras Nervosas/patologia , Rampa do Tímpano/patologiaRESUMO
OBJECTIVE: To describe the clinical and pathological features of a patient with probable cardiotoxicity related to a newer chemotherapeutic agent, DuP-941. PATIENT AND METHODS: A 42-year-old woman with metastatic breast carcinoma treated with only DuP-941 developed, and died of, heart failure for which no other explanation was apparent. RESULTS: Clinically the patient's heart failure resembled that associated with anthracycline cardiotoxicity, as did the pathological features seen at autopsy. CONCLUSION: DuP-941 is a new chemotherapeutic drug that may supplant some uses of the anthracyclines because the former may have less cardiotoxicity. This report suggests that in some cases DuP-941 may have cardiotoxic effects as well.
Assuntos
Antraquinonas/uso terapêutico , Antineoplásicos/uso terapêutico , Neoplasias Ósseas/secundário , Neoplasias da Mama/patologia , Insuficiência Cardíaca/induzido quimicamente , Neoplasias Pulmonares/secundário , Pirazóis/uso terapêutico , Pirazolonas , Adulto , Antraquinonas/efeitos adversos , Antineoplásicos/efeitos adversos , Neoplasias Ósseas/tratamento farmacológico , Neoplasias da Mama/cirurgia , Evolução Fatal , Feminino , Coração/efeitos dos fármacos , Insuficiência Cardíaca/patologia , Humanos , Neoplasias Pulmonares/tratamento farmacológico , Metástase Linfática , Mastectomia , Microscopia Eletrônica , Miocárdio/ultraestrutura , Miofibrilas/ultraestrutura , Pirazóis/efeitos adversosRESUMO
PIP: An Art Future Image (AFI) intervention was initiated among postpartum adolescent mothers during the hospitalization period in North Carolina. The aim was to improve adolescents self-image and encourage educational goal setting as a means of changing the cycle of poverty. The hope was that mothers would consider alternatives to public assistance. Nursing students were engaged as teachers during their clinical rotation in the postpartum unit. The project involved 9 mothers (8 Black women and 1 White woman). Women ranged in age from 17 to 24 years. 8 women were single, and all had a low socioeconomic status. Each study participant completed a workbook, which reflected future images as a high school or college graduate, an accountant, and other occupations. The study women selected a future role and spoke about their dreams and plans and constraints to achievement of their goal. Instant photos were taken of the mother and the infant following the interview and the faces placed on personalized body images of their choice. Both students and participants were enthusiastic about the project. An evaluation found, however, that time constraints of staff nurses would prohibit the use of this intervention model. The suggestion was made for this module to be incorporated into two 30 minute classes as part of postpartum classes. Mothers wanted only one time slot. Suggestions were made to expand the AFI program at other postpartum check-up times or when counseling on family planning. Other members of the family unit could be included. The long-term impact of AFI needs to be evaluated.^ieng
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Aconselhamento/métodos , Cuidado Pós-Natal , Pobreza , Gravidez na Adolescência , População Rural , Adolescente , Adulto , Feminino , Objetivos , Humanos , North Carolina , Gravidez , Estudantes de EnfermagemRESUMO
Visitation and proximity needs are consistently rated as very important by families of critically ill patients. This article reviews the literature on the proximity needs of families, presents nursing interventions to meet them, and suggests a plan for future research in this area.
Assuntos
Família/psicologia , Unidades de Terapia Intensiva/organização & administração , Cuidados de Enfermagem/organização & administração , Política Organizacional , Visitas a Pacientes , Necessidades e Demandas de Serviços de Saúde , HumanosRESUMO
The authors describe the content, implementation, and findings concerning an "Art Future Image Intervention" (AFI) for adolescents. The AFI was designed to help adolescents develop a positive identity and to enhance their self-efficacy by encouraging them to consider their ideal future goals, vocation, and body image. Two randomly selected classes of South Carolina high school students participated in the AFI (N = 158). The data indicated that the future images of these teenagers included realistic and unrealistic future goals and self-images. Ninety three percent of these teenagers evaluated the AFI positively. Eligible students who elected to participate in the AFI protocol had the lowest baseline self-efficacy. Both intervention and control students' mean self-efficacy scores decreased from baseline (fall 1990) to post-intervention (spring 1991); however, intervention students had less of a decrease.
Assuntos
Arteterapia , Objetivos , Psicologia do Adolescente , Autoimagem , Adolescente , Feminino , Humanos , Controle Interno-Externo , MasculinoRESUMO
An orientation class has been devised to address the fears, uncertainties, and vulnerabilities of parents admitting their children to an adolescent psychiatric unit. This orientation class offers support and information to parents of adolescents admitted to Charter Rivers Hospital, a private psychiatric inpatient facility in Columbia, South Carolina, and is held during the first week of the adolescent's hospitalization.