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1.
J Am Pharm Assoc (2003) ; 63(6): 1694-1699, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37169256

RESUMO

BACKGROUND: Care transitions are a challenging and crucial point for many high-risk patients; errors in medication use can result in preventable hospital readmissions, which worsen patient outcomes and result in decreased reimbursement and increased expenses for health systems. Transitions of care (TOC) is an opportunity where pharmacists in the outpatient setting can prevent medication errors and decrease hospital readmissions. OBJECTIVE: The primary objective of this study was to evaluate the impact of pharmacist-conducted comprehensive medication reviews (CMRs) on 30-day hospital readmission rates. Secondary objectives included medication therapy problems (MTPs) identified, recommendations or interventions made, and impact on cost savings. METHODS: Patients discharged from an Intermountain Health hospital with a high readmission risk score, value-based insurance plan, and primary care provider (PCP) at one of 21 primary care clinics were identified using an internal report. Patients were contacted by a pharmacist after discharge for a CMR; pharmacists then relayed any MTPs and therapeutic recommendations to the PCP before the patient's follow-up appointment. Data were retrospectively collected and analyzed. RESULTS: A total of 2717 discharges occurred throughout Intermountain Health and affiliate clinics from October 5, 2020, to January 31, 2021; 30-day readmissions rates in the pharmacist intervention group versus the comparator group were 24/191 (12.57%) versus 511/2526, (20.23%), respectively, yielding a statistically significant difference (P < 0.05). The absolute risk of readmission was reduced by 7.66%, with a number needed to treat of 14. Approximately 14 readmissions were prevented in the pharmacist intervention group, resulting in an estimated cost savings of $212,800 and return on investment of $16.19:1. CONCLUSION: Pharmacist intervention in the outpatient setting in high-risk TOC patients resulted in decreased 30-day readmission rates and increased cost savings. Further investigation is warranted to identify patient factors where pharmacist intervention is most beneficial.


Assuntos
Readmissão do Paciente , Farmacêuticos , Humanos , Estudos Retrospectivos , Alta do Paciente , Assistência Ambulatorial , Reconciliação de Medicamentos/métodos
2.
Int Ophthalmol ; 38(6): 2335-2339, 2018 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-29103099

RESUMO

PURPOSE: Corneal transplant rejection is one of the most frequent complications, with a reported incidence of 16-30%. In our current research, we investigated the use of infrared thermography to detect ocular surface temperature. We also looked at a case of corneal transplant rejection and this case had an elevated ocular surface temperature when compared to the contralateral eye and other eyes without corneal transplant rejection. METHODS: Twenty-three eyes of twelve patients would serve as control to one eye with clinically evident corneal transplant graft rejection. A Flir T400 320 × 240 pixel, digital thermal camera was used to take a digital photograph and an infrared photograph of each eye. The images were analyzed with the Flir web viewer. RESULTS: We present here a case of corneal transplant rejection documented with both slit lamp photos as well as infrared and corneal surface photos. The studied patient's unaffected eye, and the control group's trends did indeed bring the expected results and proved thermal imagery in this particular field a viable examination method. CONCLUSIONS: We feel that ocular thermography is a useful adjunctive diagnostic tool and that it may be useful to monitor routine corneal transplant patients. Further research into the temperature changes of corneal transplant patients is needed and may allow for earlier intervention for graft rejection.


Assuntos
Temperatura Corporal/fisiologia , Córnea/fisiopatologia , Técnicas de Diagnóstico Oftalmológico , Rejeição de Enxerto/diagnóstico , Ceratoplastia Penetrante , Termografia/métodos , Adolescente , Adulto , Idoso , Feminino , Rejeição de Enxerto/fisiopatologia , Humanos , Raios Infravermelhos , Masculino , Pessoa de Meia-Idade , Microscopia com Lâmpada de Fenda , Adulto Jovem
3.
J Neurooncol ; 120(3): 657-63, 2014 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-25189789

RESUMO

The aim of this study was to compare outcomes of postoperative whole brain radiation therapy (WBRT) to stereotactic radiosurgery (SRS) alone in patients with resected brain metastases (BM). We reviewed records of patients who underwent surgical resection of BM followed by WBRT or SRS alone between 2003 and 2013. Local control (LC) of the treated resected cavity, distant brain control (DBC), leptomeningeal disease (LMD), overall survival (OS), and radiographic leukoencephalopathy rates were estimated by the Kaplan-Meier method. One-hundred thirty-two patients underwent surgical resection for 141 intracranial metastases: 36 (27 %) patients received adjuvant WBRT and 96 (73 %) received SRS alone to the resection cavity. One-year OS (56 vs. 55 %, p = 0.64) and LC (83 vs. 74 %, p = 0.31) were similar between patients receiving WBRT and SRS. After controlling for number of BM, WBRT was associated with higher 1-year DBC compared with SRS (70 vs. 48 %, p = 0.03); single metastasis and WBRT were the only significant predictors for reduced distant brain recurrence in multi-variate analysis. Freedom from LMD was higher with WBRT at 18 months (87 vs. 69 %, p = 0.045), while incidence of radiographic leukoencephalopathy was higher with WBRT at 12 months (47 vs. 7 %, p = 0.001). One-year freedom from WBRT in the SRS alone group was 86 %. Compared with WBRT for patients with resected BM, SRS alone demonstrated similar LC, higher rates of LMD and inferior DBC, after controlling for the number of BM. However, OS was similar between groups. The results of ongoing clinical trials are needed to confirm these findings.


Assuntos
Neoplasias Encefálicas/radioterapia , Neoplasias Encefálicas/cirurgia , Radiocirurgia/métodos , Radioterapia Adjuvante/métodos , Adulto , Idoso , Idoso de 80 Anos ou mais , Encéfalo/efeitos da radiação , Encéfalo/cirurgia , Neoplasias Encefálicas/secundário , Irradiação Craniana/efeitos adversos , Irradiação Craniana/métodos , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Recidiva Local de Neoplasia , Radiocirurgia/efeitos adversos , Radioterapia Adjuvante/efeitos adversos , Estudos Retrospectivos , Análise de Sobrevida , Resultado do Tratamento , Adulto Jovem
4.
CNS Oncol ; 13(1): 2357535, 2024 Jun 06.
Artigo em Inglês | MEDLINE | ID: mdl-38864818

RESUMO

Primary effusion lymphoma (PEL) is an uncommon B-cell lymphoma associated with human herpesvirus 8 and comprises 3-4% of all HIV-related lymphomas. It traditionally presents as a pleural, pericardial, and/or peritoneal effusion, though it can occasionally manifest as an extracavitary or solid mass in the absence of an effusion. The extracavitary or solid variant of primary effusion lymphoma has been reported in the skin, gastrointestinal tract, lung, and lymph nodes. However, very few cases have been reported in the central nervous system. We describe a case of extracavitary or solid variant of primary effusion lymphoma presenting as a brain mass in an HIV-positive man, highlighting the clinicopathologic and immunophenotypic findings of a rare entity.


Primary effusion lymphoma (PEL) is an uncommon and aggressive form of large B-cell lymphoma with a grim outlook, making up less than 1% of all lymphomas. PEL is linked to human herpesvirus 8 and predominantly impacts individuals with HIV or weakened immune systems. The typical presentation of PEL involves cancerous fluid accumulating in the chest or abdominal cavities. Occasionally, PEL can appear as a solid mass outside these cavities, termed extracavitary PEL (EC-PEL). The case we are describing highlights the difficulties in diagnosing PEL/EC-PEL. It is crucial for healthcare providers to consider EC-PEL when dealing with human herpesvirus 8-positive B-cell lymphomas, especially when patients have weakened immune systems and an unusual clinical scenario involving a solid mass, as seen in this case.


Assuntos
Neoplasias Encefálicas , Linfoma de Efusão Primária , Humanos , Linfoma de Efusão Primária/patologia , Linfoma de Efusão Primária/diagnóstico , Masculino , Neoplasias Encefálicas/patologia , Neoplasias Encefálicas/diagnóstico por imagem , Neoplasias Encefálicas/diagnóstico , Pessoa de Meia-Idade
5.
J Neurosurg Anesthesiol ; 35(1): 80-85, 2023 Jan 01.
Artigo em Inglês | MEDLINE | ID: mdl-34469414

RESUMO

BACKGROUND: Perioperative opioids are problematic following craniotomy as they can impede neurological examination because of excessive sedation and mask surgical complications. Multimodal anesthetic techniques including nerve blocks have been used successfully to deliver opioid-free anesthesia in other surgical populations; however, no clinical data evaluating opioid-free anesthesia for craniotomy exists within the current body of literature. MATERIALS AND METHODS: Six prospectively identified patients underwent supratentorial craniotomy at Emory University Hospital using a multimodal opioid-free anesthetic (OFA) technique consisting of preoperative scalp block, dexmedetomidine and intravenous acetaminophen. These opioid-free patients were matched by age, sex, incision length, and incision location to 18 retrospectively identified control patients who underwent craniotomy using conventional, opioid-based anesthetic techniques. Postoperative opioid consumption and pain scores were compared and analyzed for noninferiority. RESULTS: Noninferiority of the OFA technique was demonstrated for opioid consumption at all measured intervals from postanesthesia care unit arrival to 24 hours postoperatively. Noninferiority was also demonstrated with respect to average postoperative pain scores from 0 to 12 hours, 0 to 24 hours, as well as length of postanesthesia care unit stay. Noninferiority was not shown for time to first rescue opioid postoperatively, pain scores for the 12 to 24 hours postoperative period, or time to emergence from anesthesia. CONCLUSIONS: This pilot study demonstrates the feasibility of an OFA technique for patients undergoing supratentorial craniotomy and suggests that larger prospective randomized controlled trials are indicated to examine the role of multimodal anesthetic techniques for craniotomy.


Assuntos
Bloqueio Nervoso , Humanos , Projetos Piloto , Estudos Prospectivos , Estudos Retrospectivos , Analgésicos Opioides/uso terapêutico , Craniotomia , Dor Pós-Operatória/tratamento farmacológico
6.
J Clin Oncol ; 40(4): 403-426, 2022 02 01.
Artigo em Inglês | MEDLINE | ID: mdl-34898238

RESUMO

PURPOSE: To provide guidance to clinicians regarding therapy for diffuse astrocytic and oligodendroglial tumors in adults. METHODS: ASCO and the Society for Neuro-Oncology convened an Expert Panel and conducted a systematic review of the literature. RESULTS: Fifty-nine randomized trials focusing on therapeutic management were identified. RECOMMENDATIONS: Adults with newly diagnosed oligodendroglioma, isocitrate dehydrogenase (IDH)-mutant, 1p19q codeleted CNS WHO grade 2 and 3 should be offered radiation therapy (RT) and procarbazine, lomustine, and vincristine (PCV). Temozolomide (TMZ) is a reasonable alternative for patients who may not tolerate PCV, but no high-level evidence supports upfront TMZ in this setting. People with newly diagnosed astrocytoma, IDH-mutant, 1p19q non-codeleted CNS WHO grade 2 should be offered RT with adjuvant chemotherapy (TMZ or PCV). People with astrocytoma, IDH-mutant, 1p19q non-codeleted CNS WHO grade 3 should be offered RT and adjuvant TMZ. People with astrocytoma, IDH-mutant, CNS WHO grade 4 may follow recommendations for either astrocytoma, IDH-mutant, 1p19q non-codeleted CNS WHO grade 3 or glioblastoma, IDH-wildtype, CNS WHO grade 4. Concurrent TMZ and RT should be offered to patients with newly diagnosed glioblastoma, IDH-wildtype, CNS WHO grade 4 followed by 6 months of adjuvant TMZ. Alternating electric field therapy, approved by the US Food and Drug Administration, should be considered for these patients. Bevacizumab is not recommended. In situations in which the benefits of 6-week RT plus TMZ may not outweigh the harms, hypofractionated RT plus TMZ is reasonable. In patients age ≥ 60 to ≥ 70 years, with poor performance status or for whom toxicity or prognosis are concerns, best supportive care alone, RT alone (for MGMT promoter unmethylated tumors), or TMZ alone (for MGMT promoter methylated tumors) are reasonable treatment options. Additional information is available at www.asco.org/neurooncology-guidelines.


Assuntos
Astrocitoma/terapia , Neoplasias Encefálicas/terapia , Oncologia/normas , Oligodendroglioma/terapia , Astrocitoma/genética , Astrocitoma/mortalidade , Astrocitoma/patologia , Neoplasias Encefálicas/genética , Neoplasias Encefálicas/mortalidade , Neoplasias Encefálicas/patologia , Tomada de Decisão Clínica , Consenso , Medicina Baseada em Evidências , Humanos , Oligodendroglioma/genética , Oligodendroglioma/mortalidade , Oligodendroglioma/patologia , Valor Preditivo dos Testes , Ensaios Clínicos Controlados Aleatórios como Assunto , Fatores de Tempo , Resultado do Tratamento
7.
J Pharm Pract ; 31(5): 457-461, 2018 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-28884613

RESUMO

BACKGROUND: Published studies state that adherence to regular laboratory assessments for anti-arrhythmic drugs is as low as 20%. Monitoring adherence is important as other studies have shown that up to 93% of patients on amiodarone experience an adverse drug event leading to a potentially lethal event. OBJECTIVE: To determine whether patients prescribed amiodarone or dofetilide are being monitored according to package labeling and guideline recommendations for adverse events. METHODS: Patients prescribed amiodarone or dofetilide from a 2-year period were eligible for inclusion. Patients with ventricular arrhythmias, prescribed more than 1 anti-arrhythmic agent, or received anti-arrhythmic monitoring outside the health-care system were excluded. Adherence to monitoring parameters was assessed according to labeled recommendations and published guidelines. The primary objective was to determine the frequency of baseline and follow-up monitoring recommendations for patients receiving amiodarone or dofetilide. The secondary objective was to determine rates of adverse drug events. RESULTS: One hundred patients were evaluated (amiodarone n = 50, dofetilide n = 50). Average rates of baseline and follow-up amiodarone monitoring parameters were 55% and 57%, respectively. Average rates of baseline and follow-up dofetilide monitoring were 99.6% and 85%, respectively. There was a statistically significant difference in abnormally elevated thyroid-stimulating hormone levels (8%-30%, P ≤ .005) after patients were prescribed amiodarone. Twelve percent of patients taking dofetilide had an increase in QTc interval by >15%. CONCLUSIONS: Amiodarone adverse event monitoring was lower than dofetilide in this cohort. Improving the monitoring of these agents may decrease morbidity risk in this population.


Assuntos
Amiodarona/efeitos adversos , Antiarrítmicos/efeitos adversos , Monitoramento de Medicamentos/métodos , Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos/diagnóstico , Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos/epidemiologia , Fenetilaminas/efeitos adversos , Sulfonamidas/efeitos adversos , Idoso , Idoso de 80 Anos ou mais , Amiodarona/uso terapêutico , Antiarrítmicos/uso terapêutico , Estudos de Coortes , Monitoramento de Medicamentos/normas , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Fenetilaminas/uso terapêutico , Estudos Retrospectivos , Sulfonamidas/uso terapêutico
8.
Neurosurg Focus ; 22(2): E3, 2007.
Artigo em Inglês | MEDLINE | ID: mdl-17628897

RESUMO

The authors report on a 63-year-old man initially admitted to an outside hospital for altered mental status and respiratory distress. A head computed tomography scan disclosed a right frontal cystic mass, suspected to be a neoplasm. An open biopsy was performed at an outside institution, and on visualization of the cyst, an aneurysm was found incidentally. Postoperatively, an angiogram and magnetic resonance image confirmed the presence of a distal right M1 segment aneurysm. The patient was transferred to our institution where, in addition to the middle cerebral artery lesion, a right anterior choroidal artery aneurysm was found intraoperatively; the necks of both aneurysms were clipped successfully. A review of the literature revealed 14 additional cases of intracranial aneurysms associated with arachnoid cysts. Data in the present report highlight the importance of considering an intracystic aneurysm in the differential diagnosis when reviewing cases that involve a cystic mass with a mural nodule. The authors provide a comprehensive summary of documented cases of aneurysms associated with arachnoid cysts. In addition, they include a discussion of prevailing thoughts on the origin and evolution of arachnoid cysts.


Assuntos
Cistos Aracnóideos/diagnóstico , Aneurisma Intracraniano/diagnóstico , Neoplasias Císticas, Mucinosas e Serosas/diagnóstico , Cistos Aracnóideos/patologia , Angiografia Cerebral/métodos , Humanos , Aneurisma Intracraniano/patologia , Imageamento por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , Tomografia Computadorizada por Raios X/métodos
9.
Neurosurgery ; 79(2): 279-85, 2016 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-26528673

RESUMO

BACKGROUND: Stereotactic radiosurgery (SRS) is an increasingly common modality used with surgery for resectable brain metastases (BM). OBJECTIVE: To present a multi-institutional retrospective comparison of outcomes and toxicities of preoperative SRS (Pre-SRS) and postoperative SRS (Post-SRS). METHODS: We reviewed the records of patients who underwent resection of BM and either Pre-SRS or Post-SRS alone between 2005 and 2013 at 2 institutions. Pre-SRS used a dose-reduction strategy based on tumor size, with planned resection within 48 hours. Cumulative incidence with competing risks was used to determine estimated rates. RESULTS: A total of 180 patients underwent surgical resection for 189 BM: 66 (36.7%) underwent Pre-SRS and 114 (63.3%) underwent Post-SRS. Baseline patient characteristics were balanced except for higher rates of performance status 0 (62.1% vs 28.9%, P < .001) and primary breast cancer (27.2% vs 10.5%, P = .010) for Pre-SRS. Pre-SRS had lower median planning target volume margin (0 mm vs 2 mm) and peripheral dose (14.5 Gy vs 18 Gy), but similar gross tumor volume (8.3 mL vs 9.2 mL, P = .85). The median imaging follow-up period was 24.6 months for alive patients. Multivariable analyses revealed no difference between groups for overall survival (P = .1), local recurrence (P = .24), and distant brain recurrence (P = .75). Post-SRS was associated with significantly higher rates of leptomeningeal disease (2 years: 16.6% vs 3.2%, P = .010) and symptomatic radiation necrosis (2 years: 16.4% vs 4.9%, P = .010). CONCLUSION: Pre-SRS and Post-SRS for resected BM provide similarly favorable rates of local recurrence, distant brain recurrence, and overall survival, but with significantly lower rates of symptomatic radiation necrosis and leptomeningeal disease in the Pre-SRS cohort. A prospective clinical trial comparing these treatment approaches is warranted. ABBREVIATIONS: BM, brain metastasesCI, confidence intervalCTV, clinical target volumeDBR, distant brain recurrenceGTV, gross tumor volumeLC, local controlLMD, leptomeningeal diseaseLR, local recurrenceMVA, multivariable analysisOS, overall survivalPost-SRS, postoperative stereotactic radiosurgeryPre-SRS, preoperative stereotactic radiosurgeryPTV, planning target volumeRN, radiation necrosisSRN, symptomatic radiation necrosisSRS, stereotactic radiosurgeryWBRT, whole-brain radiation therapy.


Assuntos
Neoplasias Encefálicas/radioterapia , Neoplasias Encefálicas/cirurgia , Cuidados Pós-Operatórios , Cuidados Pré-Operatórios , Radiocirurgia , Adulto , Idoso , Idoso de 80 Anos ou mais , Neoplasias Encefálicas/secundário , Neoplasias da Mama/patologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Recidiva Local de Neoplasia/epidemiologia , Estudos Retrospectivos
10.
J Clin Pharmacol ; 45(4): 434-45, 2005 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-15778424

RESUMO

This was an open-label, nonrandomized, 2-center study conducted to assess the influence of renal function on the pharmacokinetics of hydroxyurea in adults with sickle cell disease (SCD). Seventeen patients were divided into 5 groups: normal renal function (n = 7), mild renal impairment (n = 2), moderate renal impairment (n = 3), severe renal impairment (n = 2), and end-stage renal disease (ESRD, n = 3). Except for patients with ESRD, all the patients received a 15-mg/kg single oral dose of hydroxyurea. Patients with ESRD received a 15-mg/kg oral dose of hydroxyurea on 2 occasions. Blood and urine samples were collected for the assessment of hydroxyurea pharmacokinetics. The results indicate that the systemic exposure increases and the urinary recovery decreases as the degree of renal insufficiency worsens. On the basis of the exposure and the apparent clearance from the current and 2 historical studies, the authors have proposed an initial dosing regimen of hydroxyurea (7.5 mg/kg/day) for SCD patients with CL(cr) <60 mL/min. This dosing strategy is anticipated to provide a safe dose for SCD patients with renal impairment.


Assuntos
Anemia Falciforme/sangue , Hidroxiureia/farmacocinética , Falência Renal Crônica/sangue , Rim/metabolismo , Adulto , Idoso , Anemia Falciforme/tratamento farmacológico , Feminino , Humanos , Hidroxiureia/administração & dosagem , Rim/efeitos dos fármacos , Falência Renal Crônica/tratamento farmacológico , Testes de Função Renal , Masculino , Pessoa de Meia-Idade
11.
Chest ; 121(4): 1070-8, 2002 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-11948034

RESUMO

STUDY OBJECTIVES: To assess the effect of megestrol acetate (MA), a progestational appetite stimulant commonly used in patients with AIDS and cancer, on body weight and composition, respiratory muscle strength, arterial blood gas levels, and subjective perceptions in COPD patients. DESIGN AND SETTING: Prospective, double-blind, randomized, placebo-controlled trial conducted on an outpatient basis at 18 sites. PATIENTS: Underweight (< 95% ideal body weight) COPD patients > or = 40 years old. INTERVENTIONS: Either MA, 800 mg/d oral suspension, or placebo at a 1:1 ratio for 8 weeks. RESULTS: Of 145 randomized patients (63% men), 128 patients completed the trial. Body weight increased by 3.2 kg in the MA group and 0.7 kg in the placebo group (p < 0.001). Anthropometric and dual-energy radiograph absorptiometry assessments confirmed that weight gain was mainly fat. Spirometry and maximal voluntary ventilation showed no significant changes from baseline in either group, and the difference in the change in maximum inspiratory pressure between groups was not significant. The 6-min walk distances did not differ statistically between groups at week 2 and week 4, but were greater in the placebo group at week 8 (p = 0.012). Consistent with the known ability of MA to stimulate ventilation, PaCO(2) decreased (4.6 mm Hg, p < 0.001) and PaO(2) increased (2.8 mm Hg, p < 0.04) in the MA group. Questionnaires revealed that body image and appetite improved in the MA group but not the placebo group. Adverse event frequency and type were similar in both groups, but cortisol and testosterone (in men) levels decreased substantially in the MA group. CONCLUSIONS: We conclude that MA safely increased appetite and body weight, stimulated ventilation, and improved body image in underweight COPD patients, but did not improve respiratory muscle function or exercise tolerance.


Assuntos
Acetato de Megestrol/administração & dosagem , Doença Pulmonar Obstrutiva Crônica/tratamento farmacológico , Magreza/tratamento farmacológico , Aumento de Peso/efeitos dos fármacos , Idoso , Feminino , Volume Expiratório Forçado/efeitos dos fármacos , Humanos , Masculino , Acetato de Megestrol/efeitos adversos , Pessoa de Meia-Idade , Estudos Prospectivos , Ensaios Clínicos Controlados Aleatórios como Assunto , Capacidade Vital/efeitos dos fármacos
12.
J Neurosurg ; 97(6): 1378-89, 2002 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-12507137

RESUMO

OBJECT: To determine the acute and long-term effects of a therapeutic dose of brain radiation in a primate model, the authors studied the clinical, laboratory, neuroimaging, molecular, and histological outcomes in rhesus monkeys that had received fractionated whole-brain radiation therapy (WBRT). METHODS: Twelve 3-year-old male primates (Macaca mulatta) underwent fractionated WBRT (350 cGy for 5 days/week for 2 weeks, total dose 3500 cGy). Animals were followed clinically and with laboratory studies and serial magnetic resonance (MR) imaging. They were killed when they developed medical problems or neurological symptoms, lesions appeared on MR imaging, or at study completion. Gross, histological, and molecular analyses were then performed. Nine (82%) of 11 animals that underwent long-term follow up (> 2.5 years) developed neurological symptoms and/or enhancing lesions on MR imaging, which were defined as glioblastoma multiforme (GBM), 2.9 to 8.3 years after radiation therapy. The GBMs were categorized as either unifocal (three) or multifocal (six), and were located in the supratentorial (six), infratentorial (two), or both (one) cranial regions. Histological examination revealed distant, noncontiguous tumor invasion within the white matter of all nine animals harboring GBMs. Novel interspecies comparative genomic hybridization (three animals) uniformly showed deletions in the GBMs that corresponded to chromosome 9 in humans. CONCLUSIONS: The high rate of GBM formation (82%) following a therapeutic dose of WBRT in nonhuman primates indicates that radioinduction of these neoplasms as a late complication of this therapy may occur more frequently than is currently recognized in human patients. The development of these tumors while monitoring the monkeys' conditions with clinical and serial MR imaging studies, and access to the tumor and the entire brain for histological and molecular analyses offers an opportunity to gather unique insights into the nature and development of GBMs.


Assuntos
Neoplasias Encefálicas/etiologia , Neoplasias Encefálicas/radioterapia , Glioblastoma/etiologia , Glioblastoma/radioterapia , Neoplasias Induzidas por Radiação/etiologia , Animais , Neoplasias Encefálicas/patologia , DNA de Neoplasias/análise , Relação Dose-Resposta à Radiação , Fator de Crescimento Epidérmico/genética , Glioblastoma/patologia , Interleucina-5/genética , Interleucina-6/genética , Macaca mulatta , Masculino , Neoplasias Induzidas por Radiação/genética , Neoplasias Induzidas por Radiação/patologia , Hibridização de Ácido Nucleico , Proteína Supressora de Tumor p53/genética
13.
Curr Med Res Opin ; 30(2): 211-21, 2014 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-24102296

RESUMO

BACKGROUND: Medication non-adherence is a complex phenomenon that requires tailored interventions to improve it. A new self-reported measure of medication non-adherence was previously reported based on the commonly reported reasons underlying non-adherence with the intention to match the items in the scale with tailored interventions. OBJECTIVE: The objectives were to revise the original Medication Adherence Reasons Scale (MAR-Scale) based on expert opinion and cognitive interviewing, and establish the psychometric properties of the revised scale. METHODS: A cross-sectional design was used in cholesterol lowering and asthma maintenance medications in collaboration with an integrated medical center in the Mountain West. In the first phase, the original MAR-Scale was revised based on expert opinion and cognitive interviewing. In the second phase, the revised MAR-Scale was tested for psychometric properties in a random sample of 350 subjects on each medication. RESULTS: Revisions based on expert opinion included asking a global question about adherence in the past 7 days, simplifying the items and converting them into first person sentences, objective anchoring of the scale, and expanding the 'forgetfulness' item. Cognitive interviewing added one additional item to the survey. The revised MAR- Scale identified 50% of the cholesterol lowering respondents and 68% of the asthma maintenance respondents as non-adherents. An exploratory factor analysis identified four domains in the scale, with Cronbach's alpha ranging from 0.848-0.953 in cholesterol lowering and 0.827-0.891 in asthma maintenance medications. The scale also exhibited significant correlations with few other self-reported measures, consistent with hypotheses. A key limitation of the study was the moderate response rate to the survey for both medications. CONCLUSION: The revised MAR-Scale demonstrates better psychometric properties than the original.


Assuntos
Antiasmáticos/uso terapêutico , Anticolesterolemiantes/uso terapêutico , Asma/tratamento farmacológico , Colesterol/sangue , Adesão à Medicação , Estudos Transversais , Coleta de Dados , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Psicometria/métodos , Autorrelato
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