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1.
Hypertension ; 79(9): 2071-2080, 2022 09.
Artículo en Inglés | MEDLINE | ID: mdl-35766041

RESUMEN

BACKGROUND: The SPRINT (Systolic Blood Pressure Intervention Trial) demonstrated reductions in major cardiovascular disease events and mortality with an intensive systolic blood pressure (SBP) goal intervention. However, a detailed description of the blood pressure intervention, antihypertensive medication usage, blood pressure levels, and rates and predictors of blood pressure control has not been reported previously. METHODS: Hypertensive participants (n=9361) 50 years and older with elevated cardiovascular disease risk were randomized 1:1 to SBP goal <120 mm Hg or SBP goal <140 mm Hg. Guideline-recommended antihypertensive medications and dosing were provided at no cost. Intensive group participants were started on at least 2 medications, and medications were adjusted monthly until SBP goal was achieved, if feasible. Standard group participants were treated to achieve SBP 135 to 139 mm Hg. RESULTS: Baseline blood pressure (median±interquartile range) was 138±19/78±16 mm Hg. For intensive group participants, percent at goal rose from 8.9% at baseline to 52.4% at 6 months and average antihypertensive medications rose from 2.2 to 2.7; SBP was <120 mm Hg in 61.6% and <130 mm Hg in 80.0% at their final visit. For the standard group participants, percent at goal rose from 53.0% at baseline to 68.6% at 6 months, while antihypertensive medications fell from 1.9 to 1.8. From 6 to 36 months, median SBP was stable at 119±14 mm Hg for intensive and 136±15 mm Hg for standard participants, with stable numbers of medications. Few predictors of SBP control were found in multiple regression models. CONCLUSIONS: These results may inform and help replicate the benefits of SPRINT in clinical practice. REGISTRATION: URL: http://www. CLINICALTRIALS: gov; Unique identifier: NCT01206062.


Asunto(s)
Enfermedades Cardiovasculares , Hipertensión , Antihipertensivos/farmacología , Presión Sanguínea , Enfermedades Cardiovasculares/tratamiento farmacológico , Humanos , Hipertensión/diagnóstico , Hipertensión/tratamiento farmacológico , Factores de Riesgo , Resultado del Tratamiento
2.
Hypertension ; 78(6): 1701-1710, 2021 12.
Artículo en Inglés | MEDLINE | ID: mdl-34757768

RESUMEN

The SPRINT (Systolic Blood Pressure Intervention Trial) results have influenced clinical practice but have also generated discussion regarding the validity, generalizability, and importance of the findings. Following the SPRINT primary results manuscript in 2015, additional results and analyses of the data have addressed these concerns. The primary objective of this article is to respond to key questions that have been raised.


Asunto(s)
Antihipertensivos/uso terapéutico , Presión Sanguínea/efectos de los fármacos , Hipertensión/tratamiento farmacológico , Ensayos Clínicos Controlados Aleatorios como Asunto , Presión Sanguínea/fisiología , Humanos , Hipertensión/fisiopatología , Resultado del Tratamiento
3.
N Engl J Med ; 384(20): 1921-1930, 2021 05 20.
Artículo en Inglés | MEDLINE | ID: mdl-34010531

RESUMEN

BACKGROUND: In a previously reported randomized trial of standard and intensive systolic blood-pressure control, data on some outcome events had yet to be adjudicated and post-trial follow-up data had not yet been collected. METHODS: We randomly assigned 9361 participants who were at increased risk for cardiovascular disease but did not have diabetes or previous stroke to adhere to an intensive treatment target (systolic blood pressure, <120 mm Hg) or a standard treatment target (systolic blood pressure, <140 mm Hg). The primary outcome was a composite of myocardial infarction, other acute coronary syndromes, stroke, acute decompensated heart failure, or death from cardiovascular causes. Additional primary outcome events occurring through the end of the intervention period (August 20, 2015) were adjudicated after data lock for the primary analysis. We also analyzed post-trial observational follow-up data through July 29, 2016. RESULTS: At a median of 3.33 years of follow-up, the rate of the primary outcome and all-cause mortality during the trial were significantly lower in the intensive-treatment group than in the standard-treatment group (rate of the primary outcome, 1.77% per year vs. 2.40% per year; hazard ratio, 0.73; 95% confidence interval [CI], 0.63 to 0.86; all-cause mortality, 1.06% per year vs. 1.41% per year; hazard ratio, 0.75; 95% CI, 0.61 to 0.92). Serious adverse events of hypotension, electrolyte abnormalities, acute kidney injury or failure, and syncope were significantly more frequent in the intensive-treatment group. When trial and post-trial follow-up data were combined (3.88 years in total), similar patterns were found for treatment benefit and adverse events; however, rates of heart failure no longer differed between the groups. CONCLUSIONS: Among patients who were at increased cardiovascular risk, targeting a systolic blood pressure of less than 120 mm Hg resulted in lower rates of major adverse cardiovascular events and lower all-cause mortality than targeting a systolic blood pressure of less than 140 mm Hg, both during receipt of the randomly assigned therapy and after the trial. Rates of some adverse events were higher in the intensive-treatment group. (Funded by the National Institutes of Health; SPRINT ClinicalTrials.gov number, NCT01206062.).


Asunto(s)
Antihipertensivos/administración & dosificación , Presión Sanguínea , Enfermedades Cardiovasculares/prevención & control , Hipertensión/tratamiento farmacológico , Anciano , Antihipertensivos/efectos adversos , Presión Sanguínea/efectos de los fármacos , Enfermedades Cardiovasculares/epidemiología , Enfermedades Cardiovasculares/mortalidad , Femenino , Estudios de Seguimiento , Humanos , Hipertensión/complicaciones , Masculino , Persona de Mediana Edad
4.
Otol Neurotol ; 40(10): 1322-1325, 2019 12.
Artículo en Inglés | MEDLINE | ID: mdl-31385858

RESUMEN

OBJECTIVE: To gather long-term follow-up data on the efficacy of balloon dilation for treating patients with persistent Eustachian tube dysfunction (ETD). STUDY DESIGN: Extended follow-up study of the treatment arm of a prospective, multicenter, randomized controlled trial. SETTING: Tertiary care academic center and private practice. PATIENTS: Patients diagnosed with medically refractory persistent ETD. INTERVENTIONS: Balloon dilation of the Eustachian tube. MAIN OUTCOME MEASURES: The endpoints were the mean change from baseline in the 7-item Eustachian Tube Dysfunction Questionnaire (ETDQ-7) score, revision dilation rate, changes in assessments of middle ear function, and patient satisfaction. RESULTS: A total of 47 participants enrolled in the extended follow-up study. Mean follow-up was 29.4 months (range, 18-42 mo). There was a statistically significant mean (SD) change from baseline in the overall ETDQ-7 score (-2.5 ±â€Š1.2; p < 0.0001). A reduction of one or more in their overall ETDQ-7 score was observed by 93.6% (44/47) participants. The revision dilation rate was 2.1% (1/47). Among participants with abnormal baseline middle ear assessments, 76.0% had normalized tympanic membrane position (p < 0.0001), 62.5% had normalization of tympanogram type (p < 0.001), and 66.7% had positive Valsalva maneuvers (p < 0.0001). Participant satisfaction was 83.0% at long-term follow-up. CONCLUSIONS: Balloon dilation results in durable improvements in symptoms and middle ear assessments for patients with persistent Eustachian tube dysfunction at mean follow-up of longer than 2 years.


Asunto(s)
Dilatación/métodos , Enfermedades del Oído/cirugía , Trompa Auditiva/fisiopatología , Trompa Auditiva/cirugía , Pruebas de Impedancia Acústica , Adulto , Anciano , Femenino , Estudios de Seguimiento , Pruebas Auditivas , Humanos , Masculino , Persona de Mediana Edad , Satisfacción del Paciente , Estudios Prospectivos , Encuestas y Cuestionarios , Centros de Atención Terciaria , Resultado del Tratamiento , Membrana Timpánica/fisiopatología , Maniobra de Valsalva
5.
JAMA ; 322(6): 524-534, 2019 08 13.
Artículo en Inglés | MEDLINE | ID: mdl-31408137

RESUMEN

Importance: The effect of intensive blood pressure lowering on brain health remains uncertain. Objective: To evaluate the association of intensive blood pressure treatment with cerebral white matter lesion and brain volumes. Design, Setting, and Participants: A substudy of a multicenter randomized clinical trial of hypertensive adults 50 years or older without a history of diabetes or stroke at 27 sites in the United States. Randomization began on November 8, 2010. The overall trial was stopped early because of benefit for its primary outcome (a composite of cardiovascular events) and all-cause mortality on August 20, 2015. Brain magnetic resonance imaging (MRI) was performed on a subset of participants at baseline (n = 670) and at 4 years of follow-up (n = 449); final follow-up date was July 1, 2016. Interventions: Participants were randomized to a systolic blood pressure (SBP) goal of either less than 120 mm Hg (intensive treatment, n = 355) or less than 140 mm Hg (standard treatment, n = 315). Main Outcomes and Measures: The primary outcome was change in total white matter lesion volume from baseline. Change in total brain volume was a secondary outcome. Results: Among 670 recruited patients who had baseline MRI (mean age, 67.3 [SD, 8.2] years; 40.4% women), 449 (67.0%) completed the follow-up MRI at a median of 3.97 years after randomization, after a median intervention period of 3.40 years. In the intensive treatment group, based on a robust linear mixed model, mean white matter lesion volume increased from 4.57 to 5.49 cm3 (difference, 0.92 cm3 [95% CI, 0.69 to 1.14]) vs an increase from 4.40 to 5.85 cm3 (difference, 1.45 cm3 [95% CI, 1.21 to 1.70]) in the standard treatment group (between-group difference in change, -0.54 cm3 [95% CI, -0.87 to -0.20]). Mean total brain volume decreased from 1134.5 to 1104.0 cm3 (difference, -30.6 cm3 [95% CI, -32.3 to -28.8]) in the intensive treatment group vs a decrease from 1134.0 to 1107.1 cm3 (difference, -26.9 cm3 [95% CI, 24.8 to 28.8]) in the standard treatment group (between-group difference in change, -3.7 cm3 [95% CI, -6.3 to -1.1]). Conclusions and Relevance: Among hypertensive adults, targeting an SBP of less than 120 mm Hg, compared with less than 140 mm Hg, was significantly associated with a smaller increase in cerebral white matter lesion volume and a greater decrease in total brain volume, although the differences were small. Trial Registration: ClinicalTrials.gov Identifier: NCT01206062.


Asunto(s)
Antihipertensivos/uso terapéutico , Encéfalo/fisiología , Hipertensión/tratamiento farmacológico , Sustancia Blanca/patología , Anciano , Presión Sanguínea , Encéfalo/diagnóstico por imagen , Encéfalo/patología , Femenino , Humanos , Hipertensión/complicaciones , Hipertensión/patología , Imagen por Resonancia Magnética , Masculino , Persona de Mediana Edad , Tamaño de los Órganos , Factores de Riesgo
6.
JAMA ; 321(6): 553-561, 2019 02 12.
Artículo en Inglés | MEDLINE | ID: mdl-30688979

RESUMEN

Importance: There are currently no proven treatments to reduce the risk of mild cognitive impairment and dementia. Objective: To evaluate the effect of intensive blood pressure control on risk of dementia. Design, Setting, and Participants: Randomized clinical trial conducted at 102 sites in the United States and Puerto Rico among adults aged 50 years or older with hypertension but without diabetes or history of stroke. Randomization began on November 8, 2010. The trial was stopped early for benefit on its primary outcome (a composite of cardiovascular events) and all-cause mortality on August 20, 2015. The final date for follow-up of cognitive outcomes was July 22, 2018. Interventions: Participants were randomized to a systolic blood pressure goal of either less than 120 mm Hg (intensive treatment group; n = 4678) or less than 140 mm Hg (standard treatment group; n = 4683). Main Outcomes and Measures: The primary cognitive outcome was occurrence of adjudicated probable dementia. Secondary cognitive outcomes included adjudicated mild cognitive impairment and a composite outcome of mild cognitive impairment or probable dementia. Results: Among 9361 randomized participants (mean age, 67.9 years; 3332 women [35.6%]), 8563 (91.5%) completed at least 1 follow-up cognitive assessment. The median intervention period was 3.34 years. During a total median follow-up of 5.11 years, adjudicated probable dementia occurred in 149 participants in the intensive treatment group vs 176 in the standard treatment group (7.2 vs 8.6 cases per 1000 person-years; hazard ratio [HR], 0.83; 95% CI, 0.67-1.04). Intensive BP control significantly reduced the risk of mild cognitive impairment (14.6 vs 18.3 cases per 1000 person-years; HR, 0.81; 95% CI, 0.69-0.95) and the combined rate of mild cognitive impairment or probable dementia (20.2 vs 24.1 cases per 1000 person-years; HR, 0.85; 95% CI, 0.74-0.97). Conclusions and Relevance: Among ambulatory adults with hypertension, treating to a systolic blood pressure goal of less than 120 mm Hg compared with a goal of less than 140 mm Hg did not result in a significant reduction in the risk of probable dementia. Because of early study termination and fewer than expected cases of dementia, the study may have been underpowered for this end point. Trial Registration: ClinicalTrials.gov Identifier: NCT01206062.


Asunto(s)
Antihipertensivos/uso terapéutico , Disfunción Cognitiva/prevención & control , Demencia/prevención & control , Hipertensión/tratamiento farmacológico , Anciano , Anciano de 80 o más Años , Presión Sanguínea/efectos de los fármacos , Enfermedades Cardiovasculares/prevención & control , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Modelos de Riesgos Proporcionales
7.
J Am Heart Assoc ; 7(18): e009326, 2018 09 18.
Artículo en Inglés | MEDLINE | ID: mdl-30371182

RESUMEN

Background Intensive systolic blood pressure ( SBP ) lowering significantly reduced cardiovascular disease ( CVD ) events in SPRINT (Systolic Blood Pressure Intervention Trial) but not in ACCORD BP (Action to Control Cardiovascular Risk in Diabetes Blood Pressure). Methods and Results SPRINT tested the effects of intensive (<120 mm Hg) versus standard (<140 mm Hg) SBP goals on CVD events and all-cause mortality. Using 2×2 factorial design, ACCORD BP tested the same SBP intervention in addition to an intensive versus standard glycemia intervention. We compared the effects of intensive SBP lowering on the composite CVD end point and all-cause mortality in SPRINT with its effects within each of the glycemia arms in ACCORD BP . Intensive SBP lowering decreased the hazard of the composite CVD end point similarly in SPRINT (hazard ratio: 0.75; 95% confidence interval, 0.64-0.89) and in the ACCORD BP standard glycemia arm (hazard ratio: 0.77; 95% confidence interval, 0.63-0.95; interaction P=0.87). However, the effect of intensive SBP lowering on the composite CVD end point in the ACCORD BP intensive glycemia arm (hazard ratio: 1.04; 95% confidence interval, 0.83-1.29) was significantly different from SPRINT (interaction P=0.023). Patterns were similar for all-cause mortality. Conclusions The effects of intensive SBP control on CVD events and all-cause mortality were similar in patients without diabetes mellitus and in those with diabetes mellitus on standard glycemic control. An interaction between intensive SBP lowering and intensive glycemic control may have masked beneficial effects of intensive SBP lowering in ACCORD BP . Clinical Trial Registration URL : http://www.clinicaltrials.gov . Unique identifiers: NCT 01206062, NCT 00000620.


Asunto(s)
Antihipertensivos/administración & dosificación , Glucemia/metabolismo , Presión Sanguínea/efectos de los fármacos , Enfermedades Cardiovasculares/epidemiología , Diabetes Mellitus Tipo 2/mortalidad , Fenofibrato/administración & dosificación , Simvastatina/administración & dosificación , Anciano , Glucemia/efectos de los fármacos , Enfermedades Cardiovasculares/sangre , Enfermedades Cardiovasculares/complicaciones , Diabetes Mellitus Tipo 2/sangre , Diabetes Mellitus Tipo 2/tratamiento farmacológico , Relación Dosis-Respuesta a Droga , Quimioterapia Combinada , Femenino , Humanos , Inhibidores de Hidroximetilglutaril-CoA Reductasas/administración & dosificación , Hipolipemiantes , Incidencia , Masculino , Persona de Mediana Edad , Pronóstico , Factores de Riesgo , Tasa de Supervivencia/tendencias , Resultado del Tratamiento , Estados Unidos/epidemiología
8.
Otol Neurotol ; 39(7): 894-902, 2018 08.
Artículo en Inglés | MEDLINE | ID: mdl-29912819

RESUMEN

OBJECTIVE: Compare Eustachian tube balloon dilation versus continued medical therapy (control) for treating persistent Eustachian tube dysfunction (ETD). STUDY DESIGN: Prospective, multicenter, randomized controlled trial. SETTING: Tertiary care academic center and private practice. PATIENTS: Diagnosed with medically refractory persistent ETD. INTERVENTIONS: 1:1 Randomization to balloon dilation or control. After 6 weeks, control participants had the option to undergo balloon dilation if symptoms persisted. MAIN OUTCOME MEASURES: Primary efficacy endpoint was the comparison between treatment arms in the mean change from baseline in the 7-item Eustachian Tube Dysfunction Questionnaire (ETDQ-7) score. Primary safety endpoint was complication rate. RESULTS: Sixty participants were randomized (31 balloon dilation, 29 control). Mean (SD) change in overall ETDQ-7 score at 6 weeks was -2.9 (1.4) for balloon dilation compared with -0.6 (1.0) for control: balloon dilation was superior to control (p < 0.0001). No complications were reported in either study arm. Among participants with abnormal baseline assessments, improvements in tympanogram type (p < 0.006) and tympanic membrane position (p < 0.001) were significantly better for balloon dilation than control. Technical success was 100% (91 successful dilations/91 attempts) and most procedures (72%) were completed in the office under local anesthesia. Improvements in the ETDQ-7 scores were maintained through 12 months after balloon dilation. CONCLUSIONS: Balloon dilation is a safe and effective treatment for persistent ETD. Based on improved ETDQ-7 scores, balloon dilation is superior to continued medical management for persistent ETD. Symptom improvement is durable through a minimum of 12 months. Procedures are well tolerated in the office setting under local anesthesia.


Asunto(s)
Dilatación/métodos , Enfermedades del Oído/terapia , Trompa Auditiva , Adulto , Anciano , Dilatación/efectos adversos , Femenino , Estudios de Seguimiento , Pruebas Auditivas , Humanos , Masculino , Persona de Mediana Edad , Satisfacción del Paciente , Estudios Prospectivos , Resultado del Tratamiento
9.
Hypertension ; 71(5): 848-857, 2018 05.
Artículo en Inglés | MEDLINE | ID: mdl-29531173

RESUMEN

Recent publications have stated that the blood pressure (BP) measurement technique used in SPRINT (Systolic Blood Pressure Intervention Trial) was unattended. However, the SPRINT protocol does not address the issue of attendance. A survey was conducted immediately after SPRINT closeout visits were completed to inquire whether BP measurements were usually attended or unattended by staff. There were 4082 participants at 38 sites that measured BP after leaving the participant alone the entire time (always alone), 2247 at 25 sites that had personnel in the room the entire time (never alone), 1746 at 19 sites that left the participant alone only during the rest period (alone for rest), and 570 at 6 sites that left the participant alone only during the BP readings (alone for BP measurement). Similar systolic and diastolic BPs within randomized groups were noted during follow-up at the majority of visits in all 4 measurement categories. In the always alone and never alone categories, the intensive group had a similarly reduced risk for the primary outcome compared with the standard group (hazard ratio, 0.62; 95% confidence interval, 0.51-0.76 and hazard ratio, 0.64; 95% confidence interval, 0.46-0.91, respectively; pairwise interaction P value, 0.88); risk was not significantly reduced for the intensive group in the smaller alone-for-rest and the alone-for-BP-measurement categories. Similar BP levels and cardiovascular disease risk reduction were observed in the intensive group in SPRINT participants whether the measurement technique used was primarily attended or unattended. CLINICAL TRIAL REGISTRATION: URL: http://www.clinicaltrials.gov. Unique identifier: NCT01206062.


Asunto(s)
Antihipertensivos/uso terapéutico , Determinación de la Presión Sanguínea/métodos , Hipertensión/diagnóstico , Hipertensión/tratamiento farmacológico , Factores de Edad , Anciano , Determinación de la Presión Sanguínea/normas , Monitoreo Ambulatorio de la Presión Arterial/métodos , Intervalos de Confianza , Femenino , Humanos , Hipertensión/mortalidad , Masculino , Persona de Mediana Edad , Modelos de Riesgos Proporcionales , Medición de Riesgo , Sensibilidad y Especificidad , Índice de Severidad de la Enfermedad , Factores Sexuales , Análisis de Supervivencia
10.
J Natl Med Assoc ; 109(3): 172-181, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-28987246

RESUMEN

AIMS: Limited information is available on long-term antihypertensive and lipid-lowering therapy effects on hypertensive patients with atrial fibrillation/flutter (AF/AFL) compared to those without. AF/AFL at baseline or during the Antihypertensive and Lipid-Lowering Treatment to Prevent Heart Attack Trial (ALLHAT) (mean follow-up 4.9 years) markedly increased risk of stroke, heart failure, CHD, and all-cause mortality. We aimed to determine if AF/AFL continued to impact outcomes during post-trial follow-up (mean 3.8 years). METHODS: Patients were randomized to chlorthalidone, amlodipine, or lisinopril, and to pravastatin vs. usual care in the lipid-lowering trial (LLT). Of 31,473 available subjects, AF/AFL occurred in 854; 383/14,371 chlorthalidone (2.7%), 247/8565 amlodipine (2.9%), and 224/8537 lisinopril (2.6%). Post-hoc analyses utilized administrative databases for post-trial data. Individuals with AF/AFL were compared to those without during post-trial. Outcomes were analyzed by treatment groups for the antihypertensive and LLT trials. RESULTS: Among 854 AF/AFL participants, 491 (57.5%) died: 220 in-trial, 271 post-trial. Ten-year all-cause mortality rates for those with in-trial AF/AFL were similar for chlorthalidone and lisinopril, but lower for amlodipine (68, 66, and 49 per 100 persons, respectively); adjusted HR for amlodipine vs. chlorthalidone was 0.68 (95% CI, 0.54-0.87). Ten-year all-cause mortality rates were 57 vs. 65 per 100 persons (pravastatin vs. usual care); non-CVD mortality rates, 18 vs. 39 per 100 persons (pravastatin vs. usual care) (adjusted HR = 0.46, 95% CI, 0.24-0.86). CONCLUSION: Post-trial follow-up revealed continued deleterious AF/AFL effects. The amlodipine (ALLHAT) and pravastatin (ALLHAT-LLT) treatment groups showed lower all-cause and non-CVD mortality compared to the chlorthalidone and usual-care groups, respectively.


Asunto(s)
Antihipertensivos/uso terapéutico , Fibrilación Atrial/complicaciones , Hiperlipidemias/tratamiento farmacológico , Hipertensión/tratamiento farmacológico , Hipolipemiantes/uso terapéutico , Anciano , Anciano de 80 o más Años , Fibrilación Atrial/epidemiología , Estudios de Casos y Controles , Quimioterapia Combinada , Femenino , Estudios de Seguimiento , Humanos , Hiperlipidemias/complicaciones , Hiperlipidemias/mortalidad , Hipertensión/complicaciones , Hipertensión/mortalidad , Incidencia , Masculino , Persona de Mediana Edad , Prevalencia , Factores de Riesgo , Resultado del Tratamiento
12.
Clin Nephrol ; 87 (2017)(1): 11-20, 2017 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-27900942

RESUMEN

BACKGROUND/OBJECTIVES: Chronic kidney disease (CKD) and cancer are both common in older patients; whether CKD increases risk for cancer is unclear. This study evaluated CKD as a risk factor for cancer mortality in a large cohort of hypertensive patients. STUDY DESIGN: We did post-hoc analyses of in-trial and post-trial data from participants in the Antihypertensive and Lipid-Lowering Treatment to Prevent Heart Attack Trial (ALLHAT). SETTING AND PARTICIPANTS: Participants were ≥ 55 years old with hypertension and one other additional risk factor for coronary heart disease. PREDICTOR: Baseline estimated glomerular filtration rate (eGFR). OUTCOMES: Cancer mortality was ascertained by cancer-related deaths reported in national databases during and after the trial. Cox proportional hazard models were used to calculate hazard ratios (HRs) adjusted for possible confounders and were stratified by baseline GFR. RESULTS: Participants' mean age was 66.9 years. After a mean follow-up of 8.9 years, there were 2,338 reported cancer-related deaths. Participants with GFR < 45 mL/min/1.73 m2 were at increased risk of cancer mortality compared to those with GFR ≥ 90 mL/min/1.73 m2 (adjusted HR 1.54 (1.22 - 1.94), p-value for trend 0.004). These findings were consistent across subgroups defined by race, gender, and diabetes. Participants with GFR < 45 mL/min/1.73 m2 were at higher risk for mortality related to colon cancer (p-value for trend 0.048, HR 2.28 (1.12 - 4.62)) and urinary tract cancer (p-value for trend 0.001, adjusted HR 2.95 (1.14 - 7.65)). LIMITATIONS: This is a post hoc analysis of clinical trial data. CONCLUSIONS: In a large cohort of hypertensive patients, GFR < 45 mL/min/1.73 m2 was associated with a higher risk of cancer-related mortality.


Asunto(s)
Tasa de Filtración Glomerular , Hipertensión/complicaciones , Neoplasias/mortalidad , Insuficiencia Renal Crónica/fisiopatología , Anciano , Antihipertensivos/uso terapéutico , Femenino , Estudios de Seguimiento , Humanos , Hipertensión/tratamiento farmacológico , Masculino , Persona de Mediana Edad , Modelos de Riesgos Proporcionales , Ensayos Clínicos Controlados Aleatorios como Asunto , Insuficiencia Renal Crónica/complicaciones , Factores de Riesgo
14.
Phys Chem Chem Phys ; 18(33): 22789-93, 2016 Aug 17.
Artículo en Inglés | MEDLINE | ID: mdl-27491629

RESUMEN

Scanning transmission X-ray microscopy (STXM) using the X-ray fluorescence mode has been employed to elucidate the chemical structures at Ni, Fe, Mn and O sites from the (111) and (100) facets of micron-sized LiNi1/3Fe1/3Mn4/3O4 energy material particles. Furthermore, STXM imaging using electron yield mode has mapped out the surface conductivity of the crystalline particles. This study presents a novel approach that visualizes local element segregation, chemistry and conductivity variation among different crystal facets, which will assist further tailoring of the morphology and surface structure of this high voltage spinel lithium ion battery cathode material.

15.
Hypertension ; 68(4): 888-95, 2016 10.
Artículo en Inglés | MEDLINE | ID: mdl-27504006

RESUMEN

Orthostatic hypotension (OH) is associated with hypertension and diabetes mellitus. However, in populations with both hypertension and diabetes mellitus, its prevalence, the effect of intensive versus standard systolic blood pressure (BP) targets on incident OH, and its prognostic significance are unclear. In 4266 participants in the ACCORD (Action to Control Cardiovascular Risk in Diabetes) BP trial, seated BP was measured 3×, followed by readings every minute for 3 minutes after standing. Orthostatic BP change, calculated as the minimum standing minus the mean seated systolic BP and diastolic BP, was assessed at baseline, 12 months, and 48 months. The relationship between OH and clinical outcomes (total and cardiovascular death, nonfatal myocardial infarction, nonfatal stroke, heart failure hospitalization or death and the primary composite outcome of nonfatal myocardial infarction, nonfatal stroke, and cardiovascular death) was assessed using proportional hazards analysis. Consensus OH, defined by orthostatic decline in systolic BP ≥20 mm Hg or diastolic BP ≥10 mm Hg, occurred at ≥1 time point in 20% of participants. Neither age nor systolic BP treatment target (intensive, <120 mm Hg versus standard, <140 mm Hg) was related to OH incidence. Over a median follow-up of 46.9 months, OH was associated with increased risk of total death (hazard ratio, 1.61; 95% confidence interval, 1.11-2.36) and heart failure death/hospitalization (hazard ratio, 1.85, 95% confidence interval, 1.17-2.93), but not with the primary outcome or other prespecified outcomes. In patients with type 2 diabetes mellitus and hypertension, OH was common, not associated with intensive versus standard BP treatment goals, and predicted increased mortality and heart failure events.


Asunto(s)
Antihipertensivos/uso terapéutico , Enfermedades Cardiovasculares/epidemiología , Diabetes Mellitus Tipo 2/epidemiología , Hipertensión/epidemiología , Hipotensión Ortostática/epidemiología , Adulto , Distribución por Edad , Anciano , Determinación de la Presión Sanguínea , Canadá , Enfermedades Cardiovasculares/diagnóstico , Enfermedades Cardiovasculares/tratamiento farmacológico , Comorbilidad , Diabetes Mellitus Tipo 2/diagnóstico , Diabetes Mellitus Tipo 2/tratamiento farmacológico , Método Doble Ciego , Femenino , Humanos , Hipertensión/diagnóstico , Hipertensión/tratamiento farmacológico , Hipotensión Ortostática/diagnóstico , Hipotensión Ortostática/terapia , Masculino , Persona de Mediana Edad , Prevalencia , Pronóstico , Modelos de Riesgos Proporcionales , Medición de Riesgo , Índice de Severidad de la Enfermedad , Distribución por Sexo , Tasa de Supervivencia , Estados Unidos
16.
Am J Nephrol ; 44(2): 130-40, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-27513312

RESUMEN

BACKGROUND: Interventional trials have used either the Modification of Diet in Renal Disease (MDRD) or chronic kidney disease (CKD)-Epidemiology Collaboration (CKD-EPI) equation for determination of estimated glomerular filtration rate (eGFR) to define whether participants have stages 3-5 CKD. The equation used to calculate eGFR may influence the number and characteristics of participants designated as having CKD. METHODS: We examined the classification of CKD at baseline using both equations in the Systolic Blood Pressure Intervention Trial (SPRINT). eGFR was calculated at baseline using fasting serum creatinine values from a central laboratory. RESULTS: Among 9,308 participants with baseline CKD classification using the 4-variable MDRD equation specified in the SPRINT protocol, 681 (7.3%) participants were reclassified to a less advanced CKD stage (higher eGFR) and 346 (3.7%) were reclassified to a more advanced CKD stage (lower eGFR) when the CKD-EPI equation was used to calculate eGFR. For eGFRs <90 ml/min/1.73 m2, participants <75 years were more likely to be reclassified to a less advanced CKD stage; this reclassification was more likely to occur in non-blacks rather than blacks. Participants aged ≥75 years were more likely to be reclassified to a more advanced than a less advanced CKD stage, regardless of baseline CKD stage. Reclassification of baseline CKD status (eGFR <60 ml/min/1.73 m2) occurred in 3% of participants. CONCLUSIONS: Use of the MDRD equation led to a higher percentage of participants being classified as having CKD stages 3-4. Younger and non-black participants were more likely to be reclassified as not having CKD using the CKD-EPI equation.


Asunto(s)
Antihipertensivos/uso terapéutico , Presión Sanguínea/efectos de los fármacos , Tasa de Filtración Glomerular , Insuficiencia Renal Crónica/clasificación , Insuficiencia Renal Crónica/dietoterapia , Factores de Edad , Anciano , Determinación de la Presión Sanguínea , Femenino , Humanos , Pruebas de Función Renal , Masculino , Persona de Mediana Edad , Factores de Riesgo
17.
Laryngoscope ; 126(1): 44-50, 2016 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-26228589

RESUMEN

OBJECTIVES/HYPOTHESIS: To provide the final results from the REMODEL (randomized evaluation of maxillary antrostomy versus ostial dilation efficacy through long-term follow-up) full-study cohorts and perform meta-analyses of standalone balloon sinus dilation studies to explore long-term outcomes in a large patient sample. STUDY DESIGN: Randomized controlled trial and meta-analysis. METHODS: Final outcomes from the REMODEL randomized trial, including a larger cohort of 135 patients treated with functional endoscopic sinus surgery (FESS) or in-office balloon dilation, were evaluated. One hundred thirty patients had 12-month data, 66 had 18-month data, and 25 had 24-month data. In addition, a meta-analysis evaluated outcomes from six studies including 358 standalone balloon dilation patients with up to 24 months follow-up. RESULTS: Outcomes out to 2 years from the REMODEL full-study cohort are consistent with 6-month and 12-month outcomes. In the meta-analysis of standalone balloon dilation studies, technical success is 97.5%, and mean 20-item Sino-Nasal Outcomes Test scores are significantly and clinically improved at all time points (P < .0001). There are significant reductions (P < .0001) in work/school days missed, homebound days, physician/nurse visits, acute infections, and antibiotic prescriptions. Mean recovery time is 1.4 days. Comparison of 12-month symptom improvements and revision rates between the REMODEL FESS arm (n = 59), REMODEL balloon dilation arm (n = 71), and pooled single-arm standalone balloon dilation studies (n = 243) demonstrated no statistical difference. CONCLUSIONS: All outcomes are comparable between FESS and balloon dilation at all time points from 6 months to 24 months. Balloon dilation produces faster recovery, less postoperative pain, and fewer debridements than FESS. There is significant, durable benefit in a large series of 358 patients undergoing standalone balloon dilation.


Asunto(s)
Cateterismo/métodos , Endoscopía/métodos , Seno Maxilar , Rinitis/terapia , Sinusitis/terapia , Adulto , Femenino , Estudios de Seguimiento , Humanos , Masculino , Metaanálisis como Asunto , Factores de Tiempo , Resultado del Tratamiento
18.
N Engl J Med ; 373(22): 2103-16, 2015 Nov 26.
Artículo en Inglés | MEDLINE | ID: mdl-26551272

RESUMEN

BACKGROUND: The most appropriate targets for systolic blood pressure to reduce cardiovascular morbidity and mortality among persons without diabetes remain uncertain. METHODS: We randomly assigned 9361 persons with a systolic blood pressure of 130 mm Hg or higher and an increased cardiovascular risk, but without diabetes, to a systolic blood-pressure target of less than 120 mm Hg (intensive treatment) or a target of less than 140 mm Hg (standard treatment). The primary composite outcome was myocardial infarction, other acute coronary syndromes, stroke, heart failure, or death from cardiovascular causes. RESULTS: At 1 year, the mean systolic blood pressure was 121.4 mm Hg in the intensive-treatment group and 136.2 mm Hg in the standard-treatment group. The intervention was stopped early after a median follow-up of 3.26 years owing to a significantly lower rate of the primary composite outcome in the intensive-treatment group than in the standard-treatment group (1.65% per year vs. 2.19% per year; hazard ratio with intensive treatment, 0.75; 95% confidence interval [CI], 0.64 to 0.89; P<0.001). All-cause mortality was also significantly lower in the intensive-treatment group (hazard ratio, 0.73; 95% CI, 0.60 to 0.90; P=0.003). Rates of serious adverse events of hypotension, syncope, electrolyte abnormalities, and acute kidney injury or failure, but not of injurious falls, were higher in the intensive-treatment group than in the standard-treatment group. CONCLUSIONS: Among patients at high risk for cardiovascular events but without diabetes, targeting a systolic blood pressure of less than 120 mm Hg, as compared with less than 140 mm Hg, resulted in lower rates of fatal and nonfatal major cardiovascular events and death from any cause, although significantly higher rates of some adverse events were observed in the intensive-treatment group. (Funded by the National Institutes of Health; ClinicalTrials.gov number, NCT01206062.).


Asunto(s)
Antihipertensivos/administración & dosificación , Presión Sanguínea , Hipertensión/tratamiento farmacológico , Guías de Práctica Clínica como Asunto , Factores de Edad , Anciano , Antihipertensivos/efectos adversos , Enfermedades Cardiovasculares/prevención & control , Causas de Muerte , Femenino , Objetivos , Humanos , Masculino , Persona de Mediana Edad , Factores de Riesgo
19.
IUCrJ ; 1(Pt 6): 604-13, 2014 Nov 01.
Artículo en Inglés | MEDLINE | ID: mdl-25485139

RESUMEN

The smart specialization declared in the European program Horizon 2020, and the increasing cooperation between research and development found in companies and researchers at universities and research institutions have created a new paradigm where many calls for proposals require participation and funding from public and private entities. This has created a unique opportunity for large-scale facilities, such as synchrotron research laboratories, to participate in and support applied research programs. Scientific staff at synchrotron facilities have developed many advanced tools that make optimal use of the characteristics of the light generated by the storage ring. These tools have been exceptionally valuable for materials characterization including X-ray absorption spectroscopy, diffraction, tomography and scattering, and have been key in solving many research and development issues. Progress in optics and detectors, as well as a large effort put into the improvement of data analysis codes, have resulted in the development of reliable and reproducible procedures for materials characterization. Research with photons has contributed to the development of a wide variety of products such as plastics, cosmetics, chemicals, building materials, packaging materials and pharma. In this review, a few examples are highlighted of successful cooperation leading to solutions of a variety of industrial technological problems which have been exploited by industry including lessons learned from the Science Link project, supported by the European Commission, as a new approach to increase the number of commercial users at large-scale research infrastructures.

20.
Am J Rhinol Allergy ; 28(4): 323-9, 2014.
Artículo en Inglés | MEDLINE | ID: mdl-24823902

RESUMEN

BACKGROUND: The objective of this prospective, multicenter, randomized trial was to evaluate and compare 1-year outcomes from the REMODEL study between office balloon dilation and functional endoscopic sinus surgery (FESS). METHODS: Adults with maxillary chronic rhinosinusitis (CRS), including those with anterior ethmoid disease, who failed medical management and were surgical candidates for FESS, underwent either standalone balloon dilation or FESS in a 1:1 randomization scheme and were followed through a minimum of 1 year. Sinonasal symptom improvement was assessed using the validated 20-item Sino-Nasal Outcome Test (SNOT-20) survey. Standardized effect sizes were computed to further assess clinical significance. Ostial patency rate, rhinosinusitis episode frequency, impact of sinus disease on activity and work productivity using the validated Work Productivity and Activity Impairment survey, complications, and revision rate were also compared between the two groups. RESULTS: Ninety-two patients (50 balloon dilation; 42 FESS) were treated and 89 (96.7%) completed 1-year follow-up. Both groups showed clinically meaningful and statistically significant (p < 0.0001) improvement in mean overall SNOT-20 scores and in all four SNOT-20 subscales. The 1-year mean change in SNOT-20 after balloon dilation (-1.64) was noninferior to FESS (-1.65; p < 0.001). The standardized effect size was large, showing clinically significant improvement for both interventions. Ostial patency was 96.7 and 98.7% after balloon dilation and FESS, respectively, and each group reported significant reductions (p < 0.0001) in rhinosinusitis episodes (mean decrease, 4.2 for balloon dilation and 3.5 for FESS). Overall work productivity and daily activity impairment due to chronic sinusitis were significantly improved (p < 0.001) in both groups. There were no complications and revision surgery rate was 2% in each arm through 1 year. CONCLUSION: With 1-year follow-up, standalone balloon dilation is as effective as FESS in the treatment of CRS in patients with maxillary sinus disease with or without anterior ethmoid disease who failed medical therapy and met the criteria for medically necessary FESS.


Asunto(s)
Cateterismo/métodos , Rinitis/terapia , Sinusitis/terapia , Adulto , Enfermedad Crónica , Endoscopía/métodos , Estudios de Seguimiento , Humanos , Estudios Prospectivos , Calidad de Vida
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