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OBJECTIVE: Electrical cardiometry (EC) is an impedance-based monitor that provides noninvasive, real-time hemodynamic assessment. However, the reference values for neonates have not been established. STUDY DESIGN: EC (Aesculon) was applied to hemodynamically stable preterm and term infants. Hemodynamic variables included cardiac output (CO), cardiac index (CI), stroke volume (SV) and heart rate (HR). Their gestational age (GA), weight and body surface area (BSA) were recorded. RESULTS: A total of 280 neonates were studied. Their GA ranged from 26(5/7) to 41(4/7) weeks, weight 800 to 4420 g and BSA 0.07 to 0.26 m(2). CO was positively correlated to GA, weight and BSA (r=0.681, 0.822, 0.830, respectively; all P<0.001). Using regression analysis, CO was most significantly correlated to BSA. Mean CI was 2.55±0.37 l min(-1) per m(2). CONCLUSION: Hemodynamic reference by EC is notably distinct among neonates of diverse maturity. CO is most closely correlated to BSA.
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Hemodinámica/fisiología , Recien Nacido Prematuro/fisiología , Superficie Corporal , Peso Corporal , Impedancia Eléctrica , Técnicas Electrofisiológicas Cardíacas/métodos , Femenino , Edad Gestacional , Frecuencia Cardíaca/fisiología , Humanos , Recién Nacido , Masculino , Valores de Referencia , Volumen Sistólico/fisiología , TaiwánRESUMEN
It has been 10 years since the "Taiwan Organ Registry and Sharing Center" (TORSC) was founded by the Department of Health in June 2002. The mission of TORSC is to build a fair organ sharing and registration network and also a national database collection and analysis mechanism. TORSC is also dedicated to improving the organ donation rate and shortening the waiting times for patients to improve the effective usage of donated organs. The first organ was formally allocated on April 1, 2005. In this article, we will present the initial 8-year results of this allocation system focusing on kidneys. From the first organ shared on April 1, 2005 to March 31, 2013, there were 1502 donors allocated by TORSC. There were 1063 males and 439 females, with a mean age for males of 42.41 and for females of 41.99. Total organs they donated were hearts 642, livers 688, kidneys 1626, lungs 50, pancreas 88, and cornea 1973. The overall nation-wide 3-year survival rate of kidney recipients was 93.72% for patients and 83.08% for kidney grafts. In comparison, the 3-year graft survival rate presented in the 2008 Organ Procurement and Transplantation Network/Scientific Registry of Transplant Recipients (OPTN/SRTR) annual report was 82.4% for kidney. According to our data, graft survival is not inferior to OPTN/SRTR, although the patient numbers are not comparable.
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Trasplante de Riñón , Sistema de Registros , Resultado del Tratamiento , Adolescente , Adulto , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , Taiwán , Adulto JovenRESUMEN
AIMS: The aim of this study was to explore the factors associated with the occurrence, subsequent prognoses and need for additional medications following cutaneous adverse drug reactions (ADRs) among inpatients. METHODS AND MEASURES: This is a case-control study, nested in a large cohort study of 473,446 inpatients hospitalised from 2005 to 2008, examined cutaneous ADRs. A 1 : 5 strategy of individually matching age and principal diagnosis was applied to the data of cases (n = 700) and corresponding controls (n = 3365).The severity of ADRs was evaluated using Naranjo algorithms by senior pharmacists in the medical centre. Medical chart reviews and claim data analyses were analysed to explore risk factors associated with the occurrence and impact of cutaneous ADRs. Economic impacts in terms of length of stay and medical expenses were also analysed. RESULTS: The number of drug prescriptions and secondary diagnoses, and the department to which the patient was admitted, significantly contributed to the risk of cutaneous ADRs and subsequent prognosis. In addition to physician's seniority, the Naranjo score was also positively associated with patients' prognosis. Medical expenses associated with cutaneous ADRs patients ($US 916) were more than 2.5-fold higher than those patients who were not afflicted ($US 318). CONCLUSION: The study identified risk factors for cutaneous ADRs in terms of both patient characteristics and drug complexity. The present analyses indicate characteristics and mechanisms of cutaneous ADRs among inpatients, which provide clues for future intervention strategies and management issues in healthcare settings.
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Erupciones por Medicamentos/etiología , Sistemas de Registro de Reacción Adversa a Medicamentos , Estudios de Casos y Controles , Erupciones por Medicamentos/economía , Interacciones Farmacológicas , Femenino , Financiación Personal , Humanos , Tiempo de Internación/economía , Masculino , Persona de Mediana Edad , Honorarios por Prescripción de Medicamentos , Pronóstico , Factores de RiesgoRESUMEN
OBJECTIVES: There are limited options for mechanical circulatory support to treat end-stage heart failure in pediatric patients. Although extracorporeal membrane oxygenation is commonly used in infants and children, ventricular assist devices (VAD) provide a longer duration of support with fewer complications before recovery or as a bridge to heart transplantation (HTx), as described herein. METHODS: This retrospective chart review of eight patients transplanted from April 2008 to December 2011, after left ventricular assist device (LVAD) implantation due to end-stage heart failure. Their mean age was 12 years (9-15 y) and mean body weight, 48 kg (20-78). All were New York Heart Association functional class IV with mean left ventricular ejection fractions less than 15%. RESULTS: The six patients (75%) received HTx after a mean LVAD support duration of 43.2 days; 2 (25%) died before a suitable heart became available. Their mean duration of LVAD support was 30 days. There were 4 (50%) who experienced clinically evident thromboembolic events: 3 (37.5%) cerebrovascular with 1 mortality and 1 (12.5%) as acute limb ischemia. Transient hemodialysis was performed in 4 (50%). Bloodstream infection identified in 6 (75%) was controlled with intravenous antibiotics. Driveline infection identified in 4 (50%) was treated successfully with local wound dressing changes and intravenous antibiotics. One 9-year-old boy died of rejection at 16 months after transplantation. CONCLUSIONS: Because of the organ shortage, pediatric patients have a low chance to undergo HTx. VAD provides long-term support for children with end-stage heart failure before a suitable heart becomes available. A thromboembolic event remains a major complication influencing their survival.
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Insuficiencia Cardíaca/terapia , Trasplante de Corazón , Corazón Auxiliar , Donantes de Tejidos/provisión & distribución , Adolescente , Niño , Femenino , Rechazo de Injerto/etiología , Insuficiencia Cardíaca/diagnóstico , Insuficiencia Cardíaca/mortalidad , Insuficiencia Cardíaca/fisiopatología , Insuficiencia Cardíaca/cirugía , Trasplante de Corazón/efectos adversos , Trasplante de Corazón/mortalidad , Corazón Auxiliar/efectos adversos , Humanos , Masculino , Diseño de Prótesis , Estudios Retrospectivos , Taiwán , Tromboembolia/etiología , Factores de Tiempo , Resultado del Tratamiento , Función Ventricular Izquierda , Listas de EsperaRESUMEN
This paper demonstrates and analyzes the new use of the glassy solid electrolyte AgI-AgPO(3) for direct nanopatterning of thin silver films with feature resolutions of 30 nm. AgI-AgPO(3) has a high room temperature ionic conductivity with Ag( + ) as the mobile ion, leading to silver etch/patterning rates of up to 20 nm s( - 1) at an applied bias of 300 mV. The glass can be melt-processed at temperatures below 200 °C, providing a facile and economical pathway for creating large area stamps, including the 25 mm(2) stamps shown in this study. Further, the glass is sufficiently transparent to permit integration with existing tools such as aligners and imprint tools, enabling high overlay registration accuracy and facilitating insertion into multi-step fabrication recipes.
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In this paper, we report direct patterning of metal nanostructures using an embossed solid electrochemical stamp. Microforming of solid superionic stamps using Si templates--analogous to polymer patterning in nano-imprint lithography--is explored. Silver sulfide (Ag2S)--a superionic conductor with excellent microforming properties--is investigated as a candidate material. Important parameters of the superionic stamp, including mechanical behavior, material flow during forming and feature recovery after embossing, are studied. Excellent feature transferability during embossing as well as etching is observed. To illustrate the capability of this approach silver nano-antennas with gaps < 10 nm were successfully fabricated. The possibility for large area patterning with stamp diameters > 6 mm is also demonstrated. Embossing-based metal patterning allows fabrication beyond two-dimensional nanofabrication and several patterning schemes are reported.
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Simultaneous heart and kidney transplantation (SHKT) has become an accepted therapeutic option for patients with end-stage heart failure associated with end-stage renal disease. The immunosuppressive therapy is usually based upon a heart transplantation protocol using a calcineurin inhibitor (CNI). Sirolimus (SRL) is a potent nonnephrotoxic immunosuppressant with antiproliferative activity in nonimmune cells. Its use has recently been reported to show less nephrotoxicity among both heart and kidney transplants. However, the data for the SHKT are limited. We retrospectively examined the causes of 5 patients who received combined SRL-CNI immunosuppressive therapy with reduced CNI doses from 2003 to 2009. There was no mortality during follow-up. Two of the 3 patients who received a conversion regimen recovered renal function. One who suffered severe proteinuria after transplantation proceeded to hemodialysis at 3 years after conversion. Both of the patients who received the combined regimen de novo remained stable regarding their renal function. Cardiac function was stable in these patients; there was neither allograft rejection nor allograft coronary vasculopathy. We observed that patients without dyslipidemia or hyperuricemia before SHKT were less likely to develop these disorders under the combined regimen. Early medical intervention after close follow-up of lipid and uric acid values by dose adjustments resulted in a stable status of our patients.
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Suero Antilinfocítico/uso terapéutico , Inhibidores de la Calcineurina , Ciclosporina/uso terapéutico , Trasplante de Corazón/inmunología , Inmunosupresores/uso terapéutico , Trasplante de Riñón/inmunología , Ácido Micofenólico/análogos & derivados , Sirolimus/uso terapéutico , Tacrolimus/uso terapéutico , Adolescente , Quimioterapia Combinada , Femenino , Insuficiencia Cardíaca/complicaciones , Insuficiencia Cardíaca/cirugía , Prueba de Histocompatibilidad , Humanos , Fallo Renal Crónico/complicaciones , Fallo Renal Crónico/cirugía , Masculino , Persona de Mediana Edad , Ácido Micofenólico/uso terapéutico , Prednisolona/uso terapéutico , Estudios Retrospectivos , Adulto JovenRESUMEN
AIMS: A novel lysophospholipase (LysoPL) from the basidiomycetous fungi Antrodia cinnamomea named ACLysoPL was cloned, heteroexpressed in Escherichia coli and characterized. METHODS AND RESULTS: The gene encoding ACLysoPL was obtained from expressed sequence tags from A. cinnamomea. The full length of this gene has a 945 -bp open reading frame encoding 314 amino acids with a molecular weight of 35.5 kDa. ACLysoPL contains a lipase consensus sequence (GXSXG) motif and a Ser-His-Asp catalytic triad. A putative peroxisomal targeting signal type 1 was found in the C-terminal. Heterologous expression of ACLysoPL in E. coli showed that the enzyme preferentially hydrolyses long-chain acyl esterases at pH 7 and 30 degrees C. ACLysoPL is a psychrophilic enzyme about 40% of whose maximum activity remained at 4 degrees C. The LysoPL activities with lysophospholipids as substrate were analysed by gas chromatography/mass spectrometry. CONCLUSION: We have identified and characterized a gene named ACLysoPL encoding a protein performing LysoPL and esterase activities. SIGNIFICANCE AND IMPACT OF THE STUDY: This is the first LysoPL of A. cinnamomea identified and characterized at the molecular level.
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Antrodia/enzimología , Antrodia/genética , Lisofosfolipasa/genética , Lisofosfolipasa/metabolismo , Secuencia de Aminoácidos , Secuencia de Bases , Escherichia coli/genética , Lisofosfolipasa/química , Lisofosfolipasa/aislamiento & purificación , Datos de Secuencia Molecular , Proteínas Recombinantes/genética , Proteínas Recombinantes/metabolismo , Alineación de SecuenciaRESUMEN
Single-molecule spectroscopy and detection are powerful techniques for the study of single fluorescent particles and their interaction with their environment. We present a low-cost system for simultaneous real-time acquisition, storage of inter-photon arrival times and the calculation and display of the fluorescence time trace, autocorrelation function and distribution of delays histogram for single-molecule experiments. From a hardware perspective, in addition to a multi-core computer, only a standard low-cost counting board is required as processing is software-based. Software is written in a parallel programming environment with time crucial operations coded in ANSI-C. Crucial to system performance is a simple and efficient real-time autocorrelation algorithm (acf) optimized for the count rates (approximately 10(4) cps) encountered in single-molecule experiments. The algorithm's time complexity is independent of temporal resolution, which is maintained at all time delays. The system and algorithm's performance was validated by duplicating the signal from the photon detector and sending it to both the ordinary counter board and a commercial correlator simultaneously. The data acquisition system's robustness under typical single-molecule experimental conditions was tested by observing the diffusion of Rhodamine 6G molecules in deionized water.
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PURPOSE OF INVESTIGATION: The objective of this retrospective study was to investigate prognostic variables and impact of adjuvant therapy in uterine carcinosarcoma. METHODS: The clinical information and pathological confirmation were reviewed for cases with uterine carcinosarcoma from 1984 to 2005. A total of 45 patients were eligible for analysis. RESULTS: The median follow-up for survivors was 84 months. Five-year overall survival and progression-free survival (PFS) rates were 36.5% and 33.8%, respectively for Stage I-IV. Distant site metastasis with/without pelvic failure occurred in 83.3% of those with recurrence/progression. By multivariate analysis, older age (p = 0.001) and more than half of myometrial invasion (p = 0.002) were significant predictors of death, while only myometrial invasion (p = 0.022) was significantly associated with PFS. Stratified analyses demonstrated a monotonic trend of chemotherapy or chemoradiation to decrease death. CONCLUSIONS: Our results suggested that age and depth of myometrial invasion were significant prognostic factors, and chemotherapy or chemoradiation seemed to be beneficial for uterine carcinosarcoma.
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Carcinosarcoma/mortalidad , Carcinosarcoma/terapia , Neoplasias Uterinas/mortalidad , Neoplasias Uterinas/terapia , Adulto , Factores de Edad , Anciano , Anciano de 80 o más Años , Carcinosarcoma/patología , Quimioterapia Adyuvante , Supervivencia sin Enfermedad , Femenino , Humanos , Persona de Mediana Edad , Miometrio/patología , Invasividad Neoplásica , Pronóstico , Radioterapia Adyuvante , Estudios Retrospectivos , Tasa de Supervivencia , Neoplasias Uterinas/patologíaRESUMEN
Epidemiological studies have demonstrated an association between long-term exposure to inorganic arsenic and the related adverse effects such as cancers, skin lesions, and vascular diseases. Although several hypotheses have been proposed for the mechanism of arsenic-induced pathogenesis, it remains imperfectly understood. Recent studies have suggested that alterations in growth signal transduction pathways, particularly involving transforming growth factor-alpha (TGF-alpha), may be important. Immunoassays were used to determine the plasma levels of TGF-alpha and epidermal growth factor receptor (EGFR), which is the receptor for TGF-alpha, in residents of an arseniasis area of Taiwan in relation to their estimated cumulative arsenic exposure from drinking water. No relationship between arsenic exposure and EGFR was found. However, among the high cumulative exposure group (>6 ppm-years), levels of plasma TGF-alpha (25.5+/-38.2 pg ml-1) and the proportion of individuals with TGF-alpha over-expression (29.4%) were significantly higher (p<0.05) than normal, healthy unexposed controls (8.1+/-5.6 pg ml-1, 8.6%, respectively). There was a significant linear trend between cumulative arsenic exposure and the prevalence of plasma TGF-alpha over-expression after adjusting for age and sex (p=0.019). The results suggest that plasma TGF-alpha expression may be a useful biomarker when detecting adverse effects on arsenic exposed population.
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Arsénico/análisis , Exposición a Riesgos Ambientales/análisis , Factor de Crecimiento Transformador alfa/sangre , Contaminantes Químicos del Agua/análisis , Anciano , Biomarcadores/sangre , Exposición a Riesgos Ambientales/efectos adversos , Receptores ErbB/sangre , Femenino , Humanos , Inmunoensayo , Masculino , Persona de Mediana Edad , Taiwán/epidemiología , Contaminantes Químicos del Agua/efectos adversosRESUMEN
PURPOSE: To evaluate the efficacy of pain relief by oral diazepam, acetaminophen, mefenamic acid, intramuscular ketorolac tromethamine, and peribulbar anaesthesia in panretinal photocoagulation (PRP). METHODS: A total of 220 patients with proliferative diabetic retinopathy requiring PRP treatment were enrolled in this study. Before laser treatment, the patients were allocated randomly to one of eight groups: group 1: diazepam (n=22), group 2: acetaminophen (n=21), group 3: mefenamic acid (n=21), group 4: diazepam and acetaminophen (n=22), group 5: diazepam and mefenamic acid (n=22), group 6: peribulbar anaesthesia with lidocaine (n=23), group 7: intramuscular injection of ketorolac tromethamine (n=22), group 8: placebo (n=67). Pain after the laser treatment was assessed by a verbal descriptive scale. Blood pressure and heart rate were measured before and after laser treatment. RESULTS: Patients receiving peribulbar anaesthesia had a significantly lower pain score than the control group (P<0.0001). Additionally, the peribulbar anaesthesia-treated group had the significantly least PRP-associated rise in either systolic (P=0.043) or diastolic blood pressure rates (P=0.030). There were no significant differences in pain score using other anesthetic agents when compared with the control group. There were no significant changes in heart rate after PRP treatment. CONCLUSION: Peribulbar anaesthesia is effective in reducing pain and blood pressure increase after PRP treatment. Oral diazepam, mefenamic acid, and acetaminophen (either alone or in combination with each other) are not effective in preventing PRP treatment-associated pain. Intramuscular injection of ketorolac tromethamine is also not effective in reducing PRP-associated pain.
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Analgesia/métodos , Retinopatía Diabética/cirugía , Coagulación con Láser/efectos adversos , Dolor Postoperatorio/terapia , Acetaminofén , Anciano , Anestesia Local , Anestésicos Locales , Antiinflamatorios no Esteroideos , Presión Sanguínea , Diazepam , Femenino , Frecuencia Cardíaca , Humanos , Ketorolaco Trometamina , Lidocaína , Masculino , Ácido Mefenámico , Persona de Mediana Edad , Dimensión del Dolor , Estudios ProspectivosRESUMEN
OBJECTIVE: This study investigated independent comorbidities and factors associated with migraine and chronic daily headache (CDH) in out-patients with major depressive disorder (MDD). METHOD: Consecutive psychiatric out-patients fulfilling the DSM-IV criteria of MDD were enrolled. Headaches were diagnosed based on the criteria proposed by the second edition of the International Classification of the Headache Disorders. Psychiatric comorbidities were checked using the Mini International Neuropsychiatric Interview. Scores of the Hamilton Depression Rating Scale (HAMD) and duration of major depressive episodes (MDE) were evaluated. Multivariate logistic regression was used to decide risk factors. RESULTS: One hundred and fifty-one patients (34 men and 117 women) participated in the study, among which 73 (48.3%) reported a history of migraine and 32 (21.2%) reported CDH during this MDE. Higher HAMD scores, female gender, and chronic depression were independently associated with migraine or CDH. CONCLUSION: For MDD patients with a higher depressive severity and longer duration of MDE, especially female gender, surveillance of migraine and CDH might be indicated.
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Trastorno Depresivo Mayor/epidemiología , Trastornos de Cefalalgia/epidemiología , Trastornos Migrañosos/epidemiología , Adulto , Enfermedad Crónica , Comorbilidad , Estudios Transversales , Trastorno Depresivo Mayor/psicología , Femenino , Trastornos de Cefalalgia/psicología , Humanos , Masculino , Persona de Mediana Edad , Trastornos Migrañosos/psicología , Trastorno de Pánico/epidemiología , Trastorno de Pánico/psicología , Determinación de la Personalidad , Inventario de Personalidad , Factores de Riesgo , Factores Sexuales , TailandiaRESUMEN
The aim of this study was to evaluate the accuracy of human papillomavirus (HPV) genotyping by a polymerase chain reaction (PCR)-based genechip method and to determine the prognostic value of HPV genotype in bulky stage IB or IIA cervical carcinoma treated with neoadjuvant chemotherapy (NAC) and radical surgery. A total of 149 patients had adequate tissue for the study. The SPF1/GP6+ primers were used to amplify a 184 bp fragment. The amplimers were submitted for direct sequencing and hybridization with a genechip using revert-blot detection of 39 types of HPV DNA in a single reaction. Two runs of PCR with respective hybridization were performed for each tumor. The complete concordance of HPV genotyping was 80.5% (120/149) of the paired genechip results. The kappa coefficient was 0.634 (P < 0.0001). HPV DNA sequences were detected in 100% of the specimens, among which 67.8% harbored single type and 32.2% contained multiple types. HPV-16 was detected in 98.7%, HPV-18 in 22.8%, HPV-31 in 0.7%, HPV-45 in 1.3%, HPV-52 in 2.0%, HPV-58 in 6.7%, HPV-59 in 4.7%, and HPV-67 in 0.7%. In multivariate analyses, the HPV genotype [HPV-18 or HPV-16 and HPV-18 only versus all others: relative risk (RR), 2.33; 95% CI, 1.17-4.64; P = 0.016] and pre-NAC tumor size (>5 versus =5 cm: RR, 2.25; 95% CI, 1.13-4.48; P = 0.021) were significantly related to overall survival. This PCR-based genechip method is sensitive and reproducible for HPV genotyping. The association of HPV-18 or HPV-16 and HPV-18 with poor outcome in cervical carcinoma treated with NAC plus radical surgery is confirmed.
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Técnicas Genéticas , Papillomaviridae/genética , Infecciones por Papillomavirus/genética , Neoplasias del Cuello Uterino/etiología , Antineoplásicos/uso terapéutico , Femenino , Genotipo , Procedimientos Quirúrgicos Ginecológicos/métodos , Humanos , Escisión del Ganglio Linfático/métodos , Terapia Neoadyuvante , Estadificación de Neoplasias , Infecciones por Papillomavirus/complicaciones , Reacción en Cadena de la Polimerasa/métodos , Pronóstico , Neoplasias del Cuello Uterino/patología , Neoplasias del Cuello Uterino/terapiaRESUMEN
AIM: The mechanism of pulmonary oedema, a life-threatening manifestation of enterovirus 71 (EV71) encephalitis, is unclear. Our aim was to assess the relationship of proinflammatory cytokines to EV71-related pulmonary oedema. METHODS: Proinflammatory responses in 33 EV71 patients with various complications and 21 normal healthy children were measured using an enzyme-linked immunosorbent assay. RESULTS: EV71 patients with both encephalitis and pulmonary oedema were found to have much higher levels of blood interleukin-6 (IL-6) (947 +/- 1239 vs 4.9 +/- 3.1 pg/ml, p = 0.0003), tumour necrosis factor-alpha (TNF-alpha) (22.4 +/- 29.5 vs 5.3 +/- 1.0 pg/ml, p = 0.0035), interleukin Ibeta (IL-1beta) (48.4 +/- 85.2 vs 4.9 +/- 10.1 pg/ml, p = 0.01), white blood cell count (28.3 +/- 7.6 vs 15.5 +/- 6.8 10(9)/L, p > or = 0.0001) and blood glucose (501 +/- 186 vs 165 +/- 117 mg/dL, p = 0.0009) than patients with EV71 encephalitis alone. In fact, the cytokine levels in patients with encephalitis only or in those without complications were not significantly different from the levels found in normal children. The sensitivity, specificity, positive and negative predictive values of IL-6 > 70 pg/ml for EV71 encephalitis with pulmonary oedema were all 100%. CONCLUSION: Patients with EV71-related encephalitis combined with pulmonary oedema were found to have significantly elevated levels of proinflammatory cytokines and the best predictor for this complicated condition was found to be the level of serum IL-6.
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Citocinas/sangre , Encefalitis Viral/diagnóstico , Encefalitis Viral/mortalidad , Infecciones por Enterovirus/diagnóstico , Infecciones por Enterovirus/mortalidad , Mediadores de Inflamación/sangre , Edema Pulmonar/diagnóstico , Edema Pulmonar/mortalidad , Análisis de Varianza , Glucemia/análisis , Estudios de Casos y Controles , Niño , Preescolar , Encefalitis Viral/complicaciones , Encefalitis Viral/terapia , Infecciones por Enterovirus/complicaciones , Infecciones por Enterovirus/terapia , Ensayo de Inmunoadsorción Enzimática , Femenino , Humanos , Lactante , Interleucina-1/sangre , Interleucina-6/sangre , Recuento de Leucocitos , Masculino , Valor Predictivo de las Pruebas , Probabilidad , Pronóstico , Edema Pulmonar/complicaciones , Medición de Riesgo , Muestreo , Sensibilidad y Especificidad , Tasa de Supervivencia , Factor de Necrosis Tumoral alfa/análisisRESUMEN
OBJECTIVES: To assess the systematic health effects on the liver, kidney, and haematological function tests of workers in semiconductors in Taiwan. METHODS: 926 workers of a semiconductor plant in Taiwan in July 1995 were investigated. Complete blood tests including liver, kidney, and haematological functions were available from 227 workers. RESULTS: There was a significantly lower mean (SD) white blood cell (WBC) count in male workers of photolithography (5870 (1190)/mm(3), p=0.003) and implantation (6190 (1150)/mm(3), p=0.018) than that of male control workers (7350 (1660)/mm(3)). There was a significantly higher prevalence of leukopenia in male photolithography workers (6 of 20; 30%) than in male control workers (1 of 18; 5.6%), the crude odds ratio (OR) was 7.3 (95% confidence interval (95% CI) 1 to 55.6), and the multivariate adjusted OR was 8.1 (95% CI 0.83 to 78.3). The tests for serum glutamic oxaloacetic transaminase (SGOT), serum glutamic pyruvic transaminase (SGPT), gamma glutamyl transferase (RGT), and creatinine were not significant among male workers. Female workers in photolithography had abnormal SGPT and RGT of borderline significance, the multivariate adjusted ORs were 9.6 (95% CI 0.86 to 107) and 6.35 (95% CI 0.53 to 75.8), respectively. CONCLUSIONS: This study suggests that leukopenia is a potential health effect in male fabrication workers of the semiconductor industry. The tasks of the process, maintenance, and equipment engineers which consisted mostly of men put them at risk for intermittent short term peak exposure to glycol ethers, ionising radiation, arsenic, or other toxins. The findings of this medical surveillance are significant; however, a further investigation of the aetiological factors and the subsequent health effects is necessary.
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Leucopenia/sangre , Enfermedades Profesionales/sangre , Exposición Profesional/efectos adversos , Semiconductores , Adulto , Biomarcadores/sangre , Estudios de Casos y Controles , Intervalos de Confianza , Femenino , Humanos , Enfermedades Renales/sangre , Enfermedades Renales/etiología , Recuento de Leucocitos , Leucopenia/etiología , Hepatopatías/sangre , Hepatopatías/etiología , Masculino , Enfermedades Profesionales/etiología , Exposición Profesional/análisis , Oportunidad Relativa , TaiwánRESUMEN
BACKGROUND: In patients with acute respiratory distress syndrome, whether inverse ratio ventilation differs from high positive end-expiratory pressure (PEEP) for gas exchange under a similar mean airway pressure has not been adequately examined. The authors used arterial oxygenation, gastric intramucosal partial pressure of carbon dioxide (PiCO(2)), and pH (pHi) to assess whether pressure-controlled inverse ratio ventilation (PC-IRV) offers more benefits than pressure-controlled ventilation (PCV) with PEEP. METHODS: Seventeen acute respiratory distress syndrome patients were enrolled and underwent mechanical ventilation with a PCV inspiratory-to-expiratory ratio of 1:2, followed by PC-IRV 1:1 initially. Then, they were randomly assigned to receive PC-IRV 2:1, then 4:1 or 4:1, and then 2:1, alternately. The baseline setting of PCV 1:2 was repeated between the settings of PC-IRV 2:1 and 4:1. Mean airway pressure and tidal volume were kept constant by adjusting the levels of peak inspiratory pressure and applied PEEP. In each ventilatory mode, hemodynamics, pulmonary mechanics, arterial and mixed venous blood gas analysis, PiCO(2), and pHi were measured after a 1-h period of stabilization. RESULTS: With a constant mean airway pressure, PC-IRV 2:1 and 4:1 decreased arterial and mixed venous oxygenation as compared with baseline PCV 1:2. Neither the global oxygenation indices with oxygen delivery and uptake nor PiCO(2) and pHi were improved by PC-IRV. During PC-IRV, applied PEEP was lower, and auto-PEEP was higher. CONCLUSION: When substituting inverse ratio ventilation for applied PEEP to keep mean airway pressure constant, PC-IRV does not contribute more to better gas exchange and gastric intramucosal PiCO(2) and pHi than does PCV 1:2 for acute respiratory distress syndrome patients, regardless of the inspiratory-to-expiratory ratios.
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Análisis de los Gases de la Sangre , Mucosa Gástrica/metabolismo , Hemodinámica , Respiración con Presión Positiva , Intercambio Gaseoso Pulmonar , Respiración , Síndrome de Dificultad Respiratoria/terapia , APACHE , Adulto , Anciano , Anciano de 80 o más Años , Anestésicos Intravenosos , Femenino , Humanos , Concentración de Iones de Hidrógeno , Masculino , Midazolam , Persona de Mediana Edad , Síndrome de Dificultad Respiratoria/clasificaciónRESUMEN
A novel three-dimensional (3-D) differential coil has been designed for improving the localization of magnetic stimulation. This new coil design consists of a butterfly coil with two additional wing units and an extra bottom unit, both perpendicular to the plane of the butterfly coil. The wing units produce opposite fields to restrict the spread of induced fields while the bottom unit enhances the induced fields at the excitation site. The peak induced field generated by this new design is located at the center of the coil, providing an easy identification of the excitation site. The field localization of the new coil is comparable with that of much smaller coils but with an inductance compatible to current magnetic stimulators. Numerical computations based on the principles of electromagnetic induction and using a human nerve model were performed to analyze the induced fields and the stimulation thresholds of new coil designs. The localization of the coil design was assessed by a half power region (HPR), within which the magnitude of the normalized induced field is greater than 1/square root of 2. The HPR for a 3-D differential coil built is improved (decreased) by a factor of three compared with a standard butterfly coil. Induced fields by this new coil were measured and in agreement with theoretical calculations.
Asunto(s)
Axones/fisiología , Estimulación Eléctrica/instrumentación , Magnetismo/instrumentación , Diseño de Equipo , Humanos , Modelos Neurológicos , Procesamiento de Señales Asistido por ComputadorRESUMEN
BACKGROUND: Surgical reversal of a small bowel segment has been proposed as a means to improve nutritional status in individuals with extensive bowel resection. However, clinical experience remains controversial. The aim of this study was to determine the effects of bowel segment reversal on intestinal adaptation and whole-body anabolism. METHODS: Male Wistar rats underwent a 70% small bowel resection with (REV) or without (CON) reversal of a 5-cm small bowel segment (5 cm distal to resected segment), or sham-operation (SHAM). After surgery (day 0), rats were fed with powdered diet from day 2 to day 12. Body weight, nitrogen balance, carcass compositions, and serum concentrations of albumin and insulin-like growth factor (IGF)-1 were determined to assess whole-body anabolism. The composition and architecture of the small intestine were measured to assess the intestinal growth response. Serum concentrations of tumor-necrosis factor (TNF)-alpha and interleukin (IL)-6 were measured to assess the response of postoperative cytokines. RESULTS: Surgical reversal significantly increased the intestinal protein and DNA contents in the proximal segment compared with surgical resection. REV rats had a significantly slower rate of weight gain and lower serum levels of albumin and IGF-1, and had significantly greater levels of circulating white blood cells, blood urea nitrogen, and IL-6 compared with CON and SHAM rats. There were no significant differences in serum concentrations of TNF-alpha and carcass percentages of water, protein, and fat among groups. CONCLUSIONS: Small bowel segment reversal stimulates jejunal hyperplasia but the surgical reversal induced-elevation in serum IL-6 may eliminate the whole-body anabolism in massive bowel-resected rats.