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1.
Perfusion ; 38(2): 277-284, 2023 03.
Artículo en Inglés | MEDLINE | ID: mdl-34585598

RESUMEN

BACKGROUND: Crystalloid cardioplegic solutions are believed to reduce hemoglobin significantly and increase the transfusion rate. However, recent reports indicate that the del Nido cardioplegia may preserve blood morphology parameters. METHODS: In "The del Nido versus cold blood cardioplegia in aortic valve Replacement" trial patients undergoing aortic valve replacement were randomized into the del Nido (DN) or cold blood cardioplegia (CB) group. For the subanalysis, patients who underwent blood transfusions were excluded from the study. Red blood cell (RBC) count, hemoglobin, white blood cell (WBC) count and platelet (PLT) count were measured before the surgery, 24-, 48-, and 96 hours postoperatively. Furthermore, percental variation in first-last measure was compared in groups. In addition, indexed normalized ratio (INR) and activated partial thromboplastin time (aPTT) were compared preoperatively and 24 hours after the surgery. RESULTS: Eighteen (24%) patients from the del Nido group and 22 (29.3%) patients from the CB group received blood product transfusions (p = 0.560) and were excluded from further analysis. As such, 57 patients remained in DN group and 53 patients remained in CB group. No difference was found in RBC, hemoglobin, WBC, and platelet count in time intervals. Percental variation in first-last measure revealed higher fall in RBC (p = 0.0024) and hemoglobin (p = 0.0028) in the CB group. No difference was shown in preoperative and 24-hour postoperative INR and aPTT. CONCLUSIONS: The del Nido cardioplegia does not decrease blood morphology parameters when compared to cold blood cardioplegia and may be used alternatively regardless of bleeding and coagulopathy risk.


Asunto(s)
Soluciones Cardiopléjicas , Paro Cardíaco Inducido , Humanos , Soluciones Cardiopléjicas/farmacología , Soluciones Cardiopléjicas/uso terapéutico , Lidocaína , Sulfato de Magnesio , Estudios Retrospectivos
2.
Environ Monit Assess ; 195(11): 1285, 2023 Oct 09.
Artículo en Inglés | MEDLINE | ID: mdl-37814193

RESUMEN

This study conducted a spatio-temporal analysis of runoff, total suspended sediment, suspended particulate carbon, nitrogen, and phosphorus loadings within the 2.06 km2 Steppler subwatershed in southern Manitoba of Canada based on 11 years of field monitoring data collected at nine stations. Results showed that the nutrient losses were very small because of the implementation of multiple BMPs in the study area. However, a high spatio-temporal variation of runoff and water quality parameters was found for the nine fields within the subwatershed. The average runoff coefficient was 0.19 at the subwatershed outlet with sediment, suspended particulate carbon, total nitrogen, and total phosphorus losses of 73.8, 6.10, 4.54, and 0.76 kg/ha respectively. Spring snowmelt runoff was about 74.5% of the annual runoff at the subwatershed outlet, while for sediment, suspended particulate carbon, total nitrogen, and total phosphorus, the proportions were 61.1%, 63.6%, 74.9%, and 81.2% respectively during the monitoring period, which suggests that BMPs designed for reducing nutrient loadings from snowmelt runoff would be more effective than BMPs designed for reducing pollutant loading from rainfall storms in the study area. Research findings from this study will benefit the enhancement of current BMPs and the development of new BMPs in the region to minimize soil and nutrient losses from agricultural fields and improve water quality in receiving water bodies.


Asunto(s)
Conservación de los Recursos Naturales , Monitoreo del Ambiente , Canadá , Conservación de los Recursos Naturales/métodos , Pradera , Movimientos del Agua , Fósforo/análisis , Nitrógeno/análisis , Nutrientes , Agricultura/métodos
3.
Future Oncol ; 13(14): 1239-1246, 2017 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-28589759

RESUMEN

AIM: This study determined the epidemiology of developing leukemic transformation in patients with myeloproliferative neoplasms (MPN). METHODS: We utilized the Surveillance, Epidemiology and End Results 13 database to identify 83 cases of leukemic transformation in MPN (n = 9335). RESULTS: The 5-year cumulative incidence of leukemic transformation was higher in male versus female (2.17 vs 1.09%; p < 0.001), and in myelofibrosis (2.19%; 95% CI: 1.36-3.34%), compared with essential thrombocythemia (0.37%; 95% CI: 0.19-0.65%) and polycythemia vera (0.72%; 95% CI: 0.46-1.07%; p < 0.001). Patients had a median survival of 2 months after leukemic transformation, worse in older patients and without any impact of prior MPN subtypes. CONCLUSION: Myelofibrosis has a higher risk of leukemic transformation. Overall survival is dismal regardless of MPN subtypes.


Asunto(s)
Leucemia Mieloide Aguda/epidemiología , Trastornos Mieloproliferativos/epidemiología , Policitemia Vera/epidemiología , Trombocitemia Esencial/epidemiología , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Transformación Celular Neoplásica/patología , Niño , Preescolar , Femenino , Humanos , Lactante , Recién Nacido , Leucemia Mieloide Aguda/patología , Masculino , Persona de Mediana Edad , Trastornos Mieloproliferativos/patología , Policitemia Vera/patología , Mielofibrosis Primaria/patología , Estudios Retrospectivos , Trombocitemia Esencial/patología , Adulto Joven
4.
Cancer ; 121(19): 3472-80, 2015 Oct 01.
Artículo en Inglés | MEDLINE | ID: mdl-26149294

RESUMEN

BACKGROUND: The incidence of nodular lymphocyte-predominant Hodgkin lymphoma (NLPHL) is higher among African Americans than among other races, but to the authors' knowledge, the characteristics of NLPHL in this population have not been evaluated. The authors compared clinical features, treatments, and survival of black and white patients with NLPHL using the National Cancer Data Base. METHODS: The authors extracted the records of 602 black and 1950 white patients with NLPHL who were diagnosed between 1998 and 2011. Overall survival (OS) was compared using the log-rank test. RESULTS: Black patients were on average younger than white patients (median age, 42 years vs 45 years; P =.0001), more often female (49% vs 29%; P<.0001), and more likely to have the axillary lymph nodes as the primary disease site (25% vs 17%; P =.0002). They also had unfavorable socioeconomic characteristics, a higher rate of no treatment in patients with early-stage disease, and a longer time to therapy initiation (median, 53.5 days vs 47 days; P<.0001). Despite this, the authors found no significant difference between the races with regard to stage distribution or survival (P =.39). OS at 7 years was 90.1% in patients with early-stage (American Joint Committee on Cancer stage IA/B, IIA) and 79.4% in patients with advanced stage (American Joint Committee on Cancer stage IIB, III/IV) NLPHL. Survival in the early stage of disease was not found to be significantly different after various treatment strategies (stratified log-rank P = .18), except that the administration of chemotherapy was associated with a better outcome in black patients (log-rank P =.011 vs P =.81 for white patients). CONCLUSIONS: Differences in clinical presentation suggest the interaction of race-specific and sex-specific susceptibility factors for NLPHL. Further research is needed to elucidate these factors, and to investigate possible heterogeneous effects of treatments by race. Clinical trials comparing standard treatment strategies are unlikely to detect differences in OS among patients with early-stage NLPHL.


Asunto(s)
Enfermedad de Hodgkin/tratamiento farmacológico , Grupos Raciales/genética , Adolescente , Adulto , Anciano , Estudios de Cohortes , Femenino , Disparidades en Atención de Salud , Enfermedad de Hodgkin/mortalidad , Humanos , Ganglios Linfáticos/patología , Masculino , Persona de Mediana Edad , Estadificación de Neoplasias , Pronóstico , Estudios Retrospectivos , Tasa de Supervivencia , Resultado del Tratamiento , Adulto Joven
5.
JNMA J Nepal Med Assoc ; 62(270): 118-120, 2024 Feb 24.
Artículo en Inglés | MEDLINE | ID: mdl-38409983

RESUMEN

Introduction: Health personnel work under highly stressful conditions with long work hours, frequent night work, and shift duties resulting in sleep problems. Sleep problems lead to a decline in performance, cognition, memory, decision-making, medical errors and mental disorders. The study aimed to find out the prevalence of poor quality of sleep among healthcare workers in a tertiary care centre. Methods: This is a descriptive cross-sectional study conducted among healthcare workers (doctors, nurses, paramedics) of a tertiary care centre after obtaining ethical approval from the Institutional Review Committee. Data was collected from 1 October to 1 December 2023. A convenience sampling method was used. The point estimate was calculated at a 95% Confidence Interval. Results: Among 127 healthcare workers, the prevalence of poor quality of sleep was seen in 61 (48.03%) (39.34-56.72, 95% Confidence Interval). A total of 31 (50.82%) were female and 30 (49.18%) were male. Conclusions: The prevalence of poor sleep quality was found to be higher than that of other studies done in similar settings. There is a need to enhance institutional support like incorporating flexible work schedules, and regular wellness programs to alleviate poor sleep quality among healthcare workers. Keywords: health personnel; mental disorders; prevalence; quality of sleep; sleep.


Asunto(s)
Calidad del Sueño , Trastornos del Sueño-Vigilia , Femenino , Masculino , Humanos , Centros de Atención Terciaria , Estudios Transversales , Sueño , Personal de Salud , Trastornos del Sueño-Vigilia/epidemiología
6.
Eur J Haematol ; 91(5): 437-41, 2013 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-23905719

RESUMEN

OBJECTIVES: Large licensing trials did not find any association between the use of fondaparinux and the development of heparin-induced thrombocytopenia (HIT). Fondaparinux is in fact recommended as an option for the management of HIT. Since the first report of fondaparinux-associated HIT in 2007, additional reports have been published. However, the rarity of these cases, differences in case definition, and lack of larger case series have prevented better understanding of this disease. The objective of this study was to determine the clinical manifestations of fondaparinux-associated HIT, the predictive value of pretest probability (4Ts) scoring system, and the outcomes associated with current management. METHODS: Using several search terms, we reviewed all cases of fondaparinux-associated HIT reported and indexed in PubMed till May 2013. All references were also checked for additional reports. We categorized the cases of fondaparinux-associated HIT as confirmed, probable, and possible based on our case definition. RESULTS: A total of eight cases of fondaparinux-associated HIT were identified. Fondaparinux-associated HIT occurred in the setting of pro-inflammatory state, prior HIT, or exposure to heparin products. Bilateral adrenal hemorrhage or infarct, reflecting hypercoagulability or disseminated intravascular coagulation, was seen in 25% of patients. The pretest probability (4Ts) scoring system used for HIT appears to correctly risk stratify all the cases. Although functional assays can be used for the diagnosis, in the presence of recent exposure to heparin products, only the demonstration of fondaparinux-dependent platelet activation should be considered confirmatory. Non-heparin anticoagulants are effective therapy; however, one-third of the patients had poor outcomes. CONCLUSION: The risk of fondaparinux-associated HIT, although low is real, which along with documented cases of fondaparinux failure mandate its cautious use in the management of HIT.


Asunto(s)
Anticoagulantes/efectos adversos , Coagulación Intravascular Diseminada/inducido químicamente , Heparina/efectos adversos , Polisacáridos/efectos adversos , Trombocitopenia/inducido químicamente , Anciano , Anciano de 80 o más Años , Plaquetas/efectos de los fármacos , Coagulación Intravascular Diseminada/patología , Femenino , Fondaparinux , Humanos , Masculino , Persona de Mediana Edad , Activación Plaquetaria/efectos de los fármacos , Trombocitopenia/patología
7.
Kardiochir Torakochirurgia Pol ; 19(2): 81-85, 2022 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-35891993

RESUMEN

Introduction: The adequate protection provided by the del Nido cardioplegia has already been proven in trials comparing the solution with blood cardioplegia. However, evidence regarding comparison to the Bretschneider HTK solution is limited. Aim: To determine the efficacy of the del Nido cardioplegia when compared to Bretschneider HTK solution in patients undergoing aortic valve replacement for severe aortic stenosis. Material and methods: Ten patients undergoing isolated aortic valve replacement for severe aortic stenosis using the del Nido solution (group 1) were case-control matched to patients undergoing aortic valve replacement (AVR) using the Bretschneider solution (group 2). The observation included: cardioplegia dosage, time to cardiac arrest, cross-clamp and extracorporeal circulation time, ventricular fibrillation (VF) after removing the cross-clamp, gasometry parameters, creatinine kinase (MB isoenzyme - CK-MB) at 24 and 48 h following the surgery and troponin (highsensitivity troponin T - hsTnT) at 24 and 48 h. Results: Patients were no different in terms of comorbidities. Higher incidence of VF occurred in group 2 (3 vs. 9, 30% vs. 90%; p = 0.02). Blood sodium measurements after removing the cross-clamp were significantly higher in group 1 (median 137.0 vs. 130.0; p = 0.0004). Biomarker release trended toward lower values in group 1, but not significantly (median troponin at 24 h: 223.1 pg/ml vs. 294.8 pg/ml; p = 0.4 and 48 h: 208.0 pg/ml vs. 242.5 pg/ml; p = 0.7, median CK-MB at 24 h: 16.6 ng/ml vs. 17.3 ng/ml; p = 0.6, and 48 h: 6.7 ng/ml vs. 5.08 ng/ml; p = 0.3). Peak creatinine trended towards lower values in group 2, but not significantly (1.35 mg/dl vs. 1.05 mg/dl; p = 0.09). Conclusions: Both del Nido and Bretschneider cardioplegia provide satisfactory myocardial protection. However, del Nido cardioplegia reduces the incidence of VF after declamping the aorta. Further studies are required.

8.
J Cardiovasc Surg (Torino) ; 62(5): 502-509, 2021 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-34105925

RESUMEN

BACKGROUND: The evidence regarding the impact of patient's age and gender on del Nido cardioplegia cadio-protection capability in adults is strongly limited. METHODS: A group of 75 patients undergoing aortic valve replacement (AVR) with del Nido cardioplegia was divided into Group 1 (male) and Group 2 (female). Creatine kinase (CK-MB isoenzyme) and high sensitivity troponin T (hs-TnT) values at 24 hours and 48 hours, occurrence of cardiac activity during crossclamp and ventricular fibrillation (VF) during reperfusion were compared. The impact of age on hs-TnT,CK-MB, VF during reperfusion and cardiac activity during crossclamp was investigated using regression models. RESULTS: No difference between the groups was reported in 24-hour CK-MB (median 15.57 ng/mL; IQR 12.13-22.82 ng/mL vs. 13.97; 12.09-17.147 ng/mL; P=0.168), 48-hour CK-MB (6.19; 4.22-7.71 ng/mL vs. 6.07;4.56-7.06 ng/mL; P=0.707), 24-hour hs-TnT (259.2; 172.0-376.9 pg/mL vs. 193.0; 167.8-351 pg/mL.1; P=0.339), 48-hour hs-TnT (169.1; 124.9-293.0 pg/mL vs. 159.2; 123.12-211.77 pg/mL; P=0.673), VF during reperfusion (25% vs. 18,5%; P=0.774) and cardiac activity during arrest (39.6% vs. 37.1%; p= 1.0). Values of CK-MB at 24 hours, hs-TnT at 24 hours and hs-TnT at 48 hours were not dependent on age. The CK-MB at 48 hours was dependent on age (P=0.039). Probit regression failed to reveal the impact of patients' age on postclamp VF occurrence (P=0.11) or electrical activity during arrest (P=0.57). CONCLUSIONS: Considering our study results, it can be hypothesized that the del Nido cardioplegia provides adequate myocardial protection in AVR patients regardless of age and gender.


Asunto(s)
Insuficiencia de la Válvula Aórtica/cirugía , Estenosis de la Válvula Aórtica/cirugía , Válvula Aórtica/cirugía , Soluciones Cardiopléjicas/uso terapéutico , Electrólitos/uso terapéutico , Paro Cardíaco Inducido , Cardiopatías/prevención & control , Implantación de Prótesis de Válvulas Cardíacas , Lidocaína/uso terapéutico , Sulfato de Magnesio/uso terapéutico , Manitol/uso terapéutico , Cloruro de Potasio/uso terapéutico , Bicarbonato de Sodio/uso terapéutico , Soluciones/uso terapéutico , Factores de Edad , Válvula Aórtica/diagnóstico por imagen , Válvula Aórtica/fisiopatología , Insuficiencia de la Válvula Aórtica/diagnóstico por imagen , Insuficiencia de la Válvula Aórtica/fisiopatología , Estenosis de la Válvula Aórtica/diagnóstico por imagen , Estenosis de la Válvula Aórtica/fisiopatología , Biomarcadores/sangre , Soluciones Cardiopléjicas/efectos adversos , Forma MB de la Creatina-Quinasa/sangre , Electrólitos/efectos adversos , Femenino , Paro Cardíaco Inducido/efectos adversos , Cardiopatías/sangre , Cardiopatías/diagnóstico , Cardiopatías/etiología , Implantación de Prótesis de Válvulas Cardíacas/efectos adversos , Humanos , Lidocaína/efectos adversos , Sulfato de Magnesio/efectos adversos , Masculino , Manitol/efectos adversos , Cloruro de Potasio/efectos adversos , Factores Protectores , Ensayos Clínicos Controlados Aleatorios como Asunto , Estudios Retrospectivos , Medición de Riesgo , Factores de Riesgo , Factores Sexuales , Bicarbonato de Sodio/efectos adversos , Soluciones/efectos adversos , Factores de Tiempo , Resultado del Tratamiento , Troponina T/sangre
9.
Cureus ; 12(7): e9186, 2020 Jul 14.
Artículo en Inglés | MEDLINE | ID: mdl-32818118

RESUMEN

Sinus bradycardia is common in children and adults, especially during sleep. The heart rate can drop below 30 beats per minute. Up to 35% of healthy individuals below 25 years of age, trained athletes, and those with a rare form of the familial syndrome with potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 4 (HCN4) mutation may have asymptomatic sinus bradycardia without any heart diseases. The increased vagal tone has been associated with profound bradycardia in various pathophysiologic settings including pain. Herein, we report the first case of a young Caucasian female with transient symptomatic bradycardia due to postpartum hypervagotonic sinus node dysfunction (SND).

10.
J Thorac Cardiovasc Surg ; 159(6): 2275-2283.e1, 2020 06.
Artículo en Inglés | MEDLINE | ID: mdl-31358336

RESUMEN

OBJECTIVES: To compare the cardioprotective efficacy of a solution that requires only a single infusion at the start of the ischemic duration versus a solution that requires multiple infusions. METHODS: Aortic valve replacement was performed for 150 patients, who were randomized into the del Nido (DN) cardioplegia group or the cold blood (CB) cardioplegia group. The DN cardioplegia was delivered every 90 minutes and the CB cardioplegia was delivered every 20 to 30 minutes, or whenever cardiac activity was observed. The primary endpoints were electrical cardiac activity during crossclamp, ventricular fibrillation during reperfusion, and postoperative troponin and creatine kinase (CK-MB isoenzyme) at 24 and 48 hours. RESULTS: Electrical activity during crossclamp occurred in 29 (39.7%) patients in the DN group versus 34 (45.3%) patients in the CB group (adjusted P = 1.0). The number of procedures with ventricular fibrillation after removing the crossclamp was 41 (54.7%) in the CB group versus 17 (22.7%) in the DN group (adjusted P = .001; relative risk, 2.41). Troponin values appeared to be lower in the DN group (median, 223.10; interquartile range, 168.35-364.77 pg/mL vs 285.5; 196.20-419.45 pg/mL at 24 hours and 159.60; 125.42-217.20 pg/mL vs 201.60; 160.62-268.45 pg/mL at 48 hours) and CK-MB (median, 14.94; interquartile range, 12.16-20.39 ng/mL vs 17.43; 13.66-22.43 ng/mL at 24 hours and 6.19; 4.41-7.63 ng/mL vs 7.38; 4.74-10.20 ng/mL at 48 hours), but no significance was found. CONCLUSIONS: The del Nido cardioplegia protocol is an acceptable alternative for cold blood cardioplegia in patients undergoing aortic valve replacement.


Asunto(s)
Válvula Aórtica/cirugía , Soluciones Cardiopléjicas/administración & dosificación , Frío , Paro Cardíaco Inducido , Implantación de Prótesis de Válvulas Cardíacas , Anciano , Válvula Aórtica/diagnóstico por imagen , Válvula Aórtica/fisiopatología , Biomarcadores/sangre , Soluciones Cardiopléjicas/efectos adversos , Frío/efectos adversos , Constricción , Forma MB de la Creatina-Quinasa/sangre , Esquema de Medicación , Femenino , Paro Cardíaco Inducido/efectos adversos , Implantación de Prótesis de Válvulas Cardíacas/efectos adversos , Humanos , Masculino , Persona de Mediana Edad , Polonia , Factores de Tiempo , Resultado del Tratamiento , Troponina/sangre , Fibrilación Ventricular/etiología
11.
J Chem Phys ; 131(24): 245102, 2009 Dec 28.
Artículo en Inglés | MEDLINE | ID: mdl-20059114

RESUMEN

The dependence of DNA assemblies conductance on relative humidity is investigated theoretically. Following earlier suggestions, we consider the ionic conductivity through the layers of water adsorbed by DNA molecules. The increase in humidity results in a growing water layer. The binding energy of ions depends on the thickness of the water layer due to change in water polarization. This dependence is very strong at smaller thicknesses of water layers due to the low-dimensional confinement of an electric field in water. We show that the associated change in ion concentration can explain the six orders of magnitude increase in conductivity, with relative humidity growing from 0.05 to 0.95.


Asunto(s)
ADN/química , Conductividad Eléctrica , Humedad , Modelos Químicos , Electricidad Estática
12.
World J Clin Oncol ; 7(4): 324-30, 2016 Aug 10.
Artículo en Inglés | MEDLINE | ID: mdl-27579252

RESUMEN

AIM: To determine the risk of second primary malignancy (SPM) and survival of patients with essential thrombocythemia (ET). METHODS: We identified all patients with ET diagnosed during 2001 to 2011 from the Surveillance, Epidemiology and End Results (SEER) 18 database. Actuarial and relative survival methods were used to calculate the survival statistics. We utilized the SEER 13 database to calculate SPM. We used multiple primary standardized incidence ratio (SIR) session of the SEER*Stat software (version 8.1.5) to calculate SIR and excess risk of SPM for ET patients. RESULTS: Age standardized five-year cause-specific survival was greater for patients < 50 years vs those ≥ 50 years (99.4% vs 93.5%, P < 0.01). Five-year cause-specific survival was lower for men vs women (70.2% vs 79.7%). A total of 201 patients (2.46%) developed SPM at a median age of 75 years. SPMs occurred at an observed/expected (O/E) ratio of 1.26 (95%CI: 1.09-1.45, P = 0.002) with an absolute excess risk (AER) of 37.44 per 10000 population. A significantly higher risk was noted for leukemia (O/E 3.78; 95%CI: 2.20-6.05, P < 0.001; AER 11.28/10000). CONCLUSION: ET patients have an excellent cause-specific five-year survival but are at an increased risk of SPM, particularly leukemia, which may contribute to excess deaths.

13.
J Clin Oncol ; 33(6): 625-33, 2015 Feb 20.
Artículo en Inglés | MEDLINE | ID: mdl-25584010

RESUMEN

PURPOSE: The choice between combined-modality therapy (CMT) and chemotherapy alone for early-stage Hodgkin lymphoma (HL) remains controversial. Our objective was to define factors affecting treatment selection and resulting survival outcomes in the United States. PATIENTS AND METHODS: We identified 20,600 patients treated with CMT or chemotherapy between 2003 and 2011 from the National Cancer Data Base. Factors affecting treatment selection were studied in a mixed-effects logistic model. Survival outcomes were compared using a propensity score analysis to account for indication bias. RESULTS: Only 49.5% of patients received CMT, and this proportion steadily declined between 2003 (59.4%) and 2011 (45.2%), particularly in younger patients. Apart from classical prognostic factors (age, stage, tumor location, histology, comorbidities), treatment selection was significantly influenced by sex, black race, distance to facility, and type of insurance. Uninsured patients had the lowest odds of receiving CMT. A significant random effect related to facility-specific treatment preference was also evident. Estimated 5-year overall survival (OS) was 89.6%, and relative survival (RS) was 94.3%. After adjustment for guarantee-time and indication biases, CMT was associated with better OS (hazard ratio [HR], 0.61; 95% CI, 0.53 to 0.70) and RS (excess HR, 0.42; 95% CI, 0.33 to 0.54) than chemotherapy alone. This effect was without significant heterogeneity in subset analysis and was not sensitive to unobserved confounding. CONCLUSION: Socioeconomic factors affect selection of curative treatments in HL. Widespread abandonment of CMT beyond circumstances sanctioned by guidelines may affect survival. Further research should focus on developing strategies that minimize toxicity and access disparities without compromising survival.


Asunto(s)
Enfermedad de Hodgkin/terapia , Adolescente , Adulto , Factores de Edad , Anciano , Enfermedad de Hodgkin/epidemiología , Enfermedad de Hodgkin/patología , Humanos , Modelos Logísticos , Persona de Mediana Edad , Estadificación de Neoplasias , Tasa de Supervivencia , Resultado del Tratamiento , Estados Unidos/epidemiología , Adulto Joven
14.
Clin Lymphoma Myeloma Leuk ; 15(8): 484-8, 2015 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-25882766

RESUMEN

BACKGROUND: Several studies have reported excellent long-term overall survival (OS) of patients with hairy cell leukemia (HCL) without racial disparity. Studies in other cancers have demonstrated worse mortality among African American (AA) individuals. PATIENTS AND METHODS: We used the Surveillance, Epidemiology, and End Results 18 database to identify HCL patients diagnosed between 1978 and 2011. Kaplan-Meier curves were plotted to estimate OS. Univariate analysis using the life table method and multivariate Cox regression model were used to determine the independent effect of race on OS. RESULTS: The study population included 78% men and had a median age of 56 years. Race included 93% white, 3.5% Asian/Pacific Islander, and 3.5% AA. The 10-year OS was significantly less for AA as compared with white and Asian/Pacific Islander individuals (54% vs. 72% vs. 75%; P < .001). A Kaplan-Meier survival curve showed a significantly worse OS for AA versus other races (P < .001). In a multivariate analysis, AA race remained an independent predictor for a worse OS (hazard ratio 1.77; 95% confidence interval, 1.30-2.40; P < .001) after adjusting for age, sex, year of diagnosis, and marital status. CONCLUSION: In this population-based study, only half of AA patients but more than two-thirds of HCL patients from other racial groups were alive at 10 years. Such drastic racial differences in OS of HCL patients at the population level mandates further evaluation of the contributory biological, socioeconomic, health system, and other factors. Understanding and overcoming such racial disparities might close the racial differences in OS of this potentially curable disease.


Asunto(s)
Leucemia de Células Pilosas/epidemiología , Adulto , Anciano , Anciano de 80 o más Años , Femenino , Humanos , Leucemia de Células Pilosas/mortalidad , Masculino , Persona de Mediana Edad , Pronóstico , Grupos Raciales , Estudios Retrospectivos , Análisis de Supervivencia , Estados Unidos , Adulto Joven
15.
R I Med J (2013) ; 98(3): 32-3, 2015 Mar 03.
Artículo en Inglés | MEDLINE | ID: mdl-26056834

RESUMEN

Low plasma potassium level can cause muscle weakness, lassitude, constipation as well as rhabdomyolysis and arrhythmias, when severe. In muscle, low plasma potassium increases resting membrane potential (hyperpolarization) of myocytes that tend to make muscle more refractory to excitation, leading to muscle weakness. Hypokalemia can be associated with a myriad of causes including drugs of abuse. We present a case of hypokalemia and muscle weakness following use of cocaine and heroin.


Asunto(s)
Cocaína/efectos adversos , Heroína/efectos adversos , Hipopotasemia/diagnóstico , Potasio/sangre , Trastornos Relacionados con Sustancias/complicaciones , Adulto , Arritmias Cardíacas/etiología , Estreñimiento/etiología , Femenino , Humanos , Hipopotasemia/etiología , Debilidad Muscular/etiología , Cuadriplejía/etiología , Rabdomiólisis/etiología
16.
Leuk Lymphoma ; 56(10): 2759-67, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-25747972

RESUMEN

The blastoid variant of mantle cell lymphoma (MCL), which accounts for less than one-third of MCL, may arise de novo or as a transformation from the classical form of MCL. Blastoid variant, which predominantly involves men in their sixth decade, has frequent extranodal involvement (40-60%), stage IV disease (up to 85%) and central nervous system (CNS) involvement. Diagnosis relies on morphological features and is challenging. Immunophenotyping may display CD23 and CD10 positivity and CD5 negativity in a subset. Genetic analysis demonstrates an increased number of complex genetic alterations. Blastoid variant responds poorly to conventional chemotherapy and has a short duration of response. Although the optimal therapy remains to be established, CNS prophylaxis and the use of aggressive immunochemotherapy followed by autologous stem cell transplant may prolong the remission rate and survival. Further studies are crucial to expand our understanding of this disease entity and improve the clinical outcome.


Asunto(s)
Linfoma de Células del Manto/diagnóstico , Linfoma de Células del Manto/terapia , Biopsia , Terapia Combinada/efectos adversos , Terapia Combinada/métodos , Manejo de la Enfermedad , Predisposición Genética a la Enfermedad , Variación Genética , Humanos , Inmunohistoquímica , Inmunofenotipificación , Linfoma de Células del Manto/epidemiología , Linfoma de Células del Manto/etiología , Metástasis de la Neoplasia , Estadificación de Neoplasias , Pronóstico , Recurrencia , Resultado del Tratamiento
17.
Ther Adv Med Oncol ; 7(1): 4-11, 2015 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-25553079

RESUMEN

BACKGROUND: The incidence of melanoma in older patients is on the rise. Prior studies have shown disparities in surgical management and poor survival of older patients with melanoma. METHODS: This is a retrospective study of adult patients diagnosed with cutaneous invasive and in situ melanoma between 2000 and 2011 in the National Cancer Data Base. Characteristics and management of older patients (≥60 years) were compared with younger patients (20-59 years) using χ(2) testing. RESULTS: Of 476,623 total cases, 54% (n = 258,153) were diagnosed among older patients. The reported cases in the older patients increased by 1.74-fold between 2000 and 2011. The majority were white (96%), men (65%), with early-stage disease (76% stage 0-II), and superficial spreading melanoma histology (39%). Older patients, compared with younger patients, were more likely to be men (65% versus 49%, p < 0.0001), and have in situ melanoma (28% versus 21%, p < 0.0001); less likely to have nodal metastases (7% versus 9%, p < 0.0001), receive care in academic centers (30% versus 35%, p < 0.0001), undergo wide excision or major amputation for stage I-III disease (68% versus 72%, p < 0.0001) and systemic therapy for stage III (18% versus 45%, p < 0.0001) and IV disease (30% versus 50%, p < 0.0001). CONCLUSION: Older patients with melanoma are less likely to receive care in academic centers, undergo wide excision for stage I-III disease and receive systemic therapy for stage III-IV disease. Particularly, the utilization of systemic therapy is markedly low. This disparity is particularly important with the availability of less intense more effective therapies.

18.
Artículo en Inglés | MEDLINE | ID: mdl-25656665

RESUMEN

Uterine fibroid, one of the most common tumors in women, is estrogen dependent, which commonly regresses after menopause. Fibroid degeneration after menopause, therefore, is rare. Here the authors report a case of 56-year-old postmenopausal woman who presented with acute abdominal pain, low grade fever, and leukocytosis as a result of fibroid degeneration.

19.
J Clin Med Res ; 6(4): 299-301, 2014 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-24883157

RESUMEN

Primary central nervous system (CNS) lymphoma, most frequently a diffuse large B-cell lymphoma, is a rare aggressive lymphoma confined to the CNS, thus requiring differentiation from other brain malignancies such as glioblastoma. Although stereotactic biopsy can confirm the diagnosis, this is invasive, not always feasible and can be inconclusive after steroid use. Hence, cranial magnetic resonance imaging (MRI) with contrast and cerebrospinal fluid analysis are frequently used to make a prompt diagnosis. We report a case of a woman with two brain masses who presented unique diagnostic challenge.

20.
Rare Tumors ; 6(1): 5043, 2014 Jan 23.
Artículo en Inglés | MEDLINE | ID: mdl-24711904

RESUMEN

The risk factors, the optimal therapy and prognostic factors contributing to poor outcomes of neuroendocrine urinary bladder carcinoma are not fully elucidated because of its rarity. We reviewed the medical records of neuroendocrine bladder carcinoma patients treated at the University of Nebraska Medical Center between 1996 and 2011. Eighteen patients, 55% female with a median age of 77 years, had stage IV disease at diagnosis in 50% of cases. There was a high prevalence of smoking (78%), medical co-morbidities (94%), prior cancer history (22%) and family history of cancer (61%). Treatment modalities included surgery (72%), platinum-based chemotherapy (50%) and/or radiation (22%). Median overall survival was 18.5 months (95% confidence interval, 7-36 months). Patients with Stage II and III cancer who underwent radical surgery with or without neoadjuvant chemotherapy had a median survival of 37 months. In addition to smoking, for the first time, our study indicates that the personal or family history of cancer may increase risk to neuroendocrine bladder cancer. Advanced age and stage at diagnosis, and the presence of multiple co-morbidities contribute to poor overall survival. Patients with early-stage disease are likely to benefit from a combination of radical surgery and platinum-based neoadjuvant chemotherapy.

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