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1.
Med Princ Pract ; 30(4): 331-338, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33049736

RESUMO

OBJECTIVE: It is not known whether patients' ratings of the quality of healthcare services they receive truly correlate with the quality of care from their providers. Understanding this association can potentiate improvement in healthcare delivery. We evaluated the association between patients' ratings of the quality of healthcare services received and uptake of colorectal cancer (CRC) screening. SUBJECTS AND METHODS: We used 2 iterations of the Health Information National Trends Survey (HINTS) of adults in the USA. HINTS 2007 (4,007 respondents; weighted population = 75,397,128) evaluated whether respondents were up to date with CRC screening while HINTS 4 cycle 3 (1,562 respondents; weighted population = 76,628,000) evaluated whether participants had ever received CRC screening in the past. All included respondents from both surveys were at least 50 years of age, had no history of CRC, and had rated the quality of healthcare services that they had received at their healthcare provider's office in the previous 12 months. RESULTS: HINTS 2007 data showed that respondents who rated their healthcare as good or fair/poor were significantly less likely to be up to date with CRC screening compared to those who rated their healthcare as excellent. We found comparable results from analysis of HINTS 4 cycle 3 data with poorer uptake of CRC screening as the healthcare quality ratings of respondents reduced. CONCLUSION: Our study suggests that patients who reported receiving lower quality of healthcare services were less likely to have undergone and be compliant with CRC screening recommendations. It is important to pay close attention to patient feedback surveys in order to improve healthcare delivery.


Assuntos
Colonoscopia/estatística & dados numéricos , Neoplasias Colorretais/diagnóstico , Sangue Oculto , Qualidade da Assistência à Saúde , Idoso , Atenção à Saúde , Detecção Precoce de Câncer , Pesquisas sobre Atenção à Saúde , Humanos , Lactente , Pessoa de Meia-Idade , Percepção , Estados Unidos
2.
Postgrad Med J ; 90(1068): 571-5, 2014 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-25180285

RESUMO

BACKGROUND: Non-attendance of 42% has been reported for outpatient colonoscopy among persons with low socioeconomic status (SES) in an open access system in the USA. OBJECTIVES: To evaluate attendance to outpatient endoscopy among populations with low SES after inperson consultations with endoscopists prior to scheduling. METHODS: Retrospectively, we reviewed the endoscopy schedule from September 2009 to August 2010 in an inner city teaching hospital in Washington, DC. We identified patients who came for their procedures. We defined non-attendance as when patients did not notify the facility up to 24 h prior to their scheduled procedures and did not show up. RESULTS: A total of 3304 patients were scheduled for outpatient endoscopy (mean age 55.2 years; 59.5% women). Only 36 (1.1%) patients were uninsured. 716 (21.7%) patients did not show up for their procedures. There were no differences in attendance by age, sex and race. Patients seen in a private endoscopist's office (OR=1.47; 95% CI 1.07 to 2.04) were more likely to attend when compared with patients seen in trainees' continuity clinic. Married patients (OR=1.40; 95% CI 1.11 to 1.78) were also more likely to attend. Conversely, Medicaid and uninsured patients were less likely to attend. Restricting our analysis to patients scheduled for only colonoscopy yielded similar results except that patients aged 50 years and older were more likely to attend. CONCLUSIONS: Our study suggests improved attendance to endoscopy when populations with lower SES undergo prior consultation with an endoscopist. There is a potential to further improve attendance to outpatient endoscopy by directly involving the social support of the patients.


Assuntos
Agendamento de Consultas , Colonoscopia/estatística & dados numéricos , Endoscopia/estatística & dados numéricos , Cooperação do Paciente , Adulto , Idoso , Idoso de 80 Anos ou mais , District of Columbia/epidemiologia , Feminino , Hospitais , Humanos , Masculino , Pessoa de Meia-Idade , Pacientes Ambulatoriais , Estudos Retrospectivos , Fatores Socioeconômicos , Estados Unidos/epidemiologia
3.
Cureus ; 16(4): e58484, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38765419

RESUMO

BACKGROUND: The relationship between diet and the management of chronic illnesses is well established. However, it is unknown the extent to which people with chronic illnesses pay attention to nutritional information and act upon the information obtained. We evaluated the menu ordering practices of adults with chronic illnesses. METHODS: We analyzed the 2018 Health Information National Trends Survey (HINTS 5 Cycle 2). Our analytic cohort included 3,154 respondents (weighted population size=228,464,822) who answered questions regarding a personal history of diabetes, hypertension, heart disease, and obesity. They also answered questions about their nutritional habits regarding whether they noticed caloric information at fast-food or sit-down restaurants and how that information influenced their dietary choices. RESULTS: Among respondents with these chronic illnesses, only obese patients were significantly more likely to pay attention to caloric information (OR=1.56; 95%CI: 1.06-2.31). However, noticing the calorie information was not associated with ordering less calories among all categories of respondents with chronic illnesses. CONCLUSION: US adults with chronic illnesses do not pay sufficient attention to the calorie information of their diet. Furthermore, awareness of the calorie information did not influence their dietary choices. Healthcare professionals should incorporate dietary counseling into the management of chronic illnesses of their patients.

4.
J Natl Med Assoc ; 102(12): 1165-72, 2010 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-21287897

RESUMO

BACKGROUND: Approximately 232700 (21%) of Americans are unaware of their HIV-seropositive status; this represents a potential for virus transmission. Revised recommendations from the Centers for Disease Control for HIV screening promote routine screening in the health care setting. We describe the implementation of a hospital-wide routine HIV screening program in the District of Columbia. METHODS: Rapid HIV testing was conducted at Howard University Hospital on consenting patients at least 18 years of age using the OraSure OraQuick Advance Rapid HIV-1/2 Antibody Test. The study population includes Howard University Hospital patients who were offered HIV screening over a 12-month period at no cost. Screened patients received immediate test results and, for those patients found to be preliminarily reactive, confirmatory testing and linkage to care were offered. RESULTS: Of the 12836 patients who were offered testing, 7528 (58.6%) consented. Preliminary reactive test results were identified in 176 patients (2.3%). Overall, 45.5% were confirmed, of which 82.5% were confirmed positive. Screening protocol changes have led to 100% confirmation since implementation. CONCLUSIONS: Hospital-wide routine HIV screening is feasible and can be implemented effectively and efficiently. The HIV screening campaign instituted at Howard University Hospital identified a substantial number of HIV-positive individuals and provided critical connection to follow-up testing, counseling, and disease management services.


Assuntos
Infecções por HIV/diagnóstico , Hospitais , Programas de Rastreamento/organização & administração , Modelos Organizacionais , Prática de Saúde Pública , Adulto , Distribuição de Qui-Quadrado , District of Columbia/epidemiologia , Feminino , Infecções por HIV/epidemiologia , Humanos , Masculino , Pessoa de Meia-Idade
5.
Trans Am Clin Climatol Assoc ; 120: 429-34, 2009.
Artigo em Inglês | MEDLINE | ID: mdl-19768195

RESUMO

BACKGROUND: Howard University Hospital (HUH) is the first hospital in the nation to have instituted a hospital-wide routine rapid HIV screening campaign as recommended by the CDC for healthcare settings. METHODS: HUH developed a protocol and implemented a hospital-wide routine HIV screening in October 2006. Rapid oral fluid-based HIV testing was conducted throughout the hospital using the OraSure OraQuick Advance Rapid HIV-1/2 Antibody Test. Patients with a preliminarily reactive test result were either referred for confirmatory testing or offered a Western Blot confirmatory test on-site and referred for follow-up care. This is a report on the progress of this program for the first eight months. RESULTS: Of the 9,817 patients offered HIV testing, 5,642 consented. The mean age of the screened population was 40.7 years. Ninety percent of the patients screened were black and 55% were female. A preliminarily reactive test result was identified in 139 patients for a seroprevalence rate of 2.46%. Of these patients, 136, or 98% were black; 63% were male and 37% were female. HIV prevalence in the overall sample, among blacks, and among both black males and females peaked in the 40-54 year old age group. Challenges were experienced initially in securing confirmatory tests. CONCLUSIONS: Hospital-wide routine HIV screening is both possible and productive. The routine HIV screening campaign instituted at Howard University Hospital has identified a significant number of previously unidentified HIV positive persons. Success in assuring confirmatory testing and transition to care improved as time progressed.


Assuntos
Infecções por HIV/prevenção & controle , Hospitais Universitários , Programas de Rastreamento/métodos , Sorodiagnóstico da AIDS , Adolescente , Adulto , Centers for Disease Control and Prevention, U.S. , District of Columbia/epidemiologia , Feminino , Infecções por HIV/epidemiologia , Humanos , Masculino , Programas de Rastreamento/tendências , Pessoa de Meia-Idade , Estados Unidos , Adulto Jovem
6.
World J Gastrointest Pharmacol Ther ; 6(3): 84-8, 2015 Aug 06.
Artigo em Inglês | MEDLINE | ID: mdl-26261736

RESUMO

AIM: To examine whether non-alcoholic beverage intake preferences can guide polyethylene glycol (PEG)-based bowel laxative preparation selection for patients. METHODS: We conducted eight public taste test sessions using commercially procured (A) unflavored PEG, (B) citrus flavored PEG and (C) PEG with ascorbate (Moviprep). We collected characteristics of volunteers including their beverage intake preferences. The volunteers tasted the laxatives in randomly assigned orders and ranked the laxatives as 1(st), 2(nd), and 3(rd) based on their taste preferences. Our primary outcome is the number of 1(st) place rankings for each preparation. RESULTS: A total of 777 volunteers completed the study. Unflavored PEG was ranked as 1(st) by 70 (9.0%), flavored PEG by 534 (68.7%) and PEG with ascorbate by 173 (22.3%) volunteers. Demographic, lifestyle characteristics and beverage intake patterns for coffee, tea, and carbonated drinks did not predict PEG-based laxative preference. CONCLUSION: Beverage intake pattern was not a useful guide for PEG-based laxative preference. It is important to develop more tolerable and affordable bowel preparation laxatives for colonoscopy. Also, patients should taste their PEG solution with and without flavoring before flavoring the entire gallon as this may give them more opportunity to pick a pattern that may be more tolerable.

7.
Transplantation ; 78(6): 886-91, 2004 Sep 27.
Artigo em Inglês | MEDLINE | ID: mdl-15385809

RESUMO

BACKGROUND: Induction with monoclonal antibodies for prevention of acute cellular rejection (ACR) may avoid many of the adverse events associated with polyclonal antibodies. Basiliximab, a chimeric monoclonal antibody directed against the alpha-chain of the interleukin 2 receptor (CD25), has been extensively evaluated as an induction therapy for kidney transplant recipients, more frequently in combination with a cyclosporine-based regimen. In this study, we assessed the efficacy and safety of basiliximab in combination with a tacrolimus-based regimen after liver transplantation. METHODS: Fifty consecutive liver transplants (47 cadaveric donors; 3 living donors) were analyzed. All patients received two 20-mg doses of basiliximab (days 0 and 4 after transplantation) followed by tacrolimus (0.15 mg/kg/day; 10-15 ng/mL target trough levels) and a tapered dose regimen of steroids. Follow-up ranged from 404 to 1,364 days after transplantation (mean 799.89 days, SD+/-257.37; median 796 days). RESULTS: A total of 88% of patients remained rejection-free during follow-up with an actuarial rejection-free probability of 75% within 3 months. The actuarial patient survival rate at 3 years was 88%, and the graft survival rate was 75%. Twelve (24%) patients experienced one episode of sepsis, requiring temporary reduction of immunosuppressive therapy. There were no immediate side effects associated with basiliximab and no evidence of cytomegalovirus infection or posttransplant lymphoproliferative disorder. CONCLUSIONS: Basiliximab in combination with a tacrolimus-based immunosuppressive regimen is effective in reducing episodes of ACR and increasing ACR-free survival after liver transplantation. In addition, basiliximab does not increase the incidence of adverse effects or infections.


Assuntos
Anticorpos Monoclonais/uso terapêutico , Transplante de Fígado/imunologia , Proteínas Recombinantes de Fusão/uso terapêutico , Tacrolimo/uso terapêutico , Adolescente , Adulto , Anticorpos Monoclonais/efeitos adversos , Basiliximab , Infecções por Citomegalovirus/prevenção & controle , Quimioterapia Combinada , Feminino , Sobrevivência de Enxerto , Hepatite Viral Humana/cirurgia , Humanos , Hepatopatias/classificação , Hepatopatias/cirurgia , Transplante de Fígado/mortalidade , Masculino , Pessoa de Meia-Idade , Proteínas Recombinantes de Fusão/efeitos adversos , Análise de Sobrevida , Tacrolimo/efeitos adversos
8.
Transplantation ; 75(7): 1066-9, 2003 Apr 15.
Artigo em Inglês | MEDLINE | ID: mdl-12698104

RESUMO

Early diagnosis of posttransplant lymphoproliferative disorder (PTLD) requires a high level of clinical suspicion. PTLD occurs mainly in the lymphoid tissue, allograft organ, bowel, and central nervous system. The diagnosis may not be considered initially when disease is localized to other sites. Retrospective review of the PTLD series at the University of Pittsburgh Medical Center showed that 4 of 418 patients (1%) presented with signs and symptoms localized to sites of previous surgical intervention (choledochojejunostomy site, ileosigmoid anastomotic site, site of saphenous vein stripping, and intrabiliary site of percutaneous transhepatic catheter). All patients showed symptomatic, Epstein-Barr virus-positive B-cell PTLD of varying histology. Three of four patients ultimately died with tumor, and the fourth died of unrelated causes. PTLD should be included in the differential diagnosis when clinical signs and symptoms localize to anastomotic sites, surgical incision sites, or sites of longstanding catheter placement in immunosuppressed organ transplant recipients.


Assuntos
Transplante de Coração/efeitos adversos , Transplante de Fígado/efeitos adversos , Transtornos Linfoproliferativos/etiologia , Idoso , Pré-Escolar , Infecções por Vírus Epstein-Barr/complicações , Evolução Fatal , Feminino , Humanos , Transtornos Linfoproliferativos/virologia , Masculino , Prontuários Médicos , Pessoa de Meia-Idade , Reoperação , Estudos Retrospectivos
9.
Hepatobiliary Pancreat Dis Int ; 1(3): 354-67, 2002 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-14607707

RESUMO

BACKGROUND: Appropriate preclinical evaluation of a bioartificial liver assist device (BAL) demands a large animal model, as presented here, that demonstrates many of the clinical features of acute liver failure and that is suitable for clinical qualitative and quantitative evaluation of the BAL. A lethal canine liver failure model of acute hepatic failure that removes many of the artifacts evidenced in prior canine models is presented. METHODS: Six male hounds, 24-30 kg, under isoflurane anesthesia, were administered 1.5 g/kg D-galactosamine intravenously. Canine supportive care followed a well-defined management protocol that was guided by electrolyte and invasive monitoring consisting of arterial pressure, central venous pressure, extradural intracranial pressure (ICP), pulmonary artery pressure, and end-tidal CO2. The animals were treated until death-equivalent, defined as inability to sustain systolic blood pressure >80 mmHg for 20 minutes despite maximal fluids and 20 microg/kg/min dopamine infusion. RESULTS: The mean survival time was 43.7+/-4.6 hours (mean+/-SE). All animals showed evidence of progressive liver failure characterized by increasing liver enzymes (aspartate transaminase from 26 to 5977 IU/L; alanine transaminase from 32 to 9740 IU/L), bilirubin (0.25 to 1.30 mg/dl), ammonia (19.8 to 85.3 micromol/L), and coagulopathy (prothrombin time from 8.7 to 46 s). Increased lability and elevations in intracranial pressures were observed. All animals were refractory to maintenance of cerebral perfusion pressure even with only moderately elevated intracranial pressure. Severe neurologic obtundation, seen in 2 of 6 animals, was associated with elevations of ICP above 50 mmHg. Post-mortem liver histology showed evidence of massive hepatic necrosis. Postmortem blood and ascites microbial growth was consistent with possible translocation of intestinal microbes. CONCLUSIONS: The improved lethal canine liver failure model presented here reproduces many of the clinical features of acute liver failure. The model may prove useful for qualitative and quantitative evaluation of BALs.


Assuntos
Cães , Galactosamina , Falência Hepática Aguda/induzido quimicamente , Animais , Modelos Animais de Doenças , Fígado/enzimologia , Fígado/metabolismo , Fígado/patologia , Falência Hepática Aguda/patologia , Falência Hepática Aguda/fisiopatologia , Masculino , Análise de Sobrevida
10.
Exp Clin Transplant ; 1(1): 48-55, 2003 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-15859907

RESUMO

We examined the frequency, reasons and outcome after conversion from Tacrolimus to Cyclosporine A. From August 1989 to December 1992, 1000 consecutive liver transplantation patients were studied, which included 834 adults (age>18 yr.) and 166 children with mean follow-up of 77 months (range 56 to 96). A prospectively populated electronic database was queried to identify patients that underwent conversion, the clinical indication and outcomes. Thirty-seven out of 834 adult recipients (4.43%), mean age of 48.4+/-12.9 years, 19 male (51.35%) and 18 females (48.64%) required conversion from Tacrolimus to Cyclosporine A baseline immunosuppressive therapy. No pediatric patient required conversion. The mean time interval from liver transplantation to Cyclosporine A conversion was 443.45+/-441.44 days (range 22 to 1641). The clinical indications for conversion included: 20 neurological (54%), 6 gastrointestinal (16%), 5 hematological (14%), and 6 other (16%) scenarios. Seven of the 37 patients (18.9%) died. The causes of death were multi-organ failure (2), sepsis (2), pancreatitis (1), hepatic failure due to relapse of ethanol abuse (1), and unknown cause (1). Nine out of 37 patients (24.32%) had to be reconverted to Tacrolimus (mean 282.22+/-499.79 days; range 15 to 1583 day with a median of 135) after institution of Cyclosporine A; none showed recurrence of the original symptoms. The reasons for these re-conversions were acute cellular rejection (44%, n=4), chronic rejection (11%, n=1), increased hepatic enzymes (33%, n=3) and progressively worsening neurological symptoms (11%, n=1). The frequency of conversion from Tacrolimus to Cyclosporine A was 4.43%. Conversion is safe and efficacious if done in a controlled setting. Additionally, re-conversion to Tacrolimus for lack of efficacy of Cyclosporine A did not appear to be associated with a recurrence of the condition that caused the initial switch.


Assuntos
Ciclosporina/uso terapêutico , Imunossupressores/uso terapêutico , Transplante de Fígado , Tacrolimo/uso terapêutico , Adulto , Idoso , Feminino , Gastroenteropatias/induzido quimicamente , Rejeição de Enxerto/tratamento farmacológico , Doenças Hematológicas/induzido quimicamente , Humanos , Imunossupressores/efeitos adversos , Transplante de Fígado/mortalidade , Masculino , Pessoa de Meia-Idade , Doenças do Sistema Nervoso/induzido quimicamente , Retratamento/estatística & dados numéricos , Estudos Retrospectivos , Tacrolimo/efeitos adversos , Resultado do Tratamento
11.
Pediatr Blood Cancer ; 49(7): 1004-7, 2007 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-16317759

RESUMO

HIV infection predisposes to cancer during childhood. In addition to the AIDS-defining non-Hodgkin lymphoma (NHL) and Kaposi sarcoma, a range of other lymphoid malignancies and solid tumors have been described. We report the first case of an HIV-positive child with thymic carcinoma in the setting of regressing thymic cysts. The tumor expressed CKIT but failed to respond to imatinab mesylate after a transient response to multiagent chemotherapy. This case extends the spectrum of pediatric malignancy in the setting of HIV and suggests that patients with presumed benign thymic cysts require ongoing surveillance.


Assuntos
Infecções por HIV/complicações , Neoplasias Hepáticas/diagnóstico , Neoplasias Pulmonares/diagnóstico , Timoma/complicações , Neoplasias do Timo/complicações , Antineoplásicos/uso terapêutico , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Benzamidas , Criança , Progressão da Doença , Seguimentos , Infecções por HIV/diagnóstico , Infecções por HIV/terapia , Humanos , Mesilato de Imatinib , Neoplasias Hepáticas/secundário , Neoplasias Pulmonares/secundário , Masculino , Cisto Mediastínico/complicações , Cisto Mediastínico/diagnóstico , Piperazinas/uso terapêutico , Pirimidinas/uso terapêutico , Indução de Remissão , Timoma/diagnóstico , Timoma/terapia , Neoplasias do Timo/diagnóstico , Neoplasias do Timo/terapia , Tomografia Computadorizada por Raios X , Resultado do Tratamento
12.
Pediatr Dev Pathol ; 9(5): 374-80, 2006.
Artigo em Inglês | MEDLINE | ID: mdl-16953678

RESUMO

Autopsy rates and clinicopathologic correlations for pediatric autopsies and the subgroup of pediatric oncology autopsies in a large teaching hospital were studied to evaluate the utility of autopsy in these populations. Autopsy records of the University of North Carolina hospitals from 1982 to 2001 were reviewed for all patients less than 18 years of age. Autopsies performed during 1982 to 1991 (decade 1) were compared to those from 1992 to 2001 (decade 2) with respect to absolute numbers of autopsy and rates of unexpected postmortem diagnoses. Postmortem diagnostic discrepancies were subclassified into major and minor categories. The mean number of autopsies per year for decade 1 was 110+/-24.5, compared with 77.5+/-40.9 for decade 2 (P<0.001), a change largely due to a decline in fetal/perinatal (patients<7 days of age) autopsies. Of 533 pediatric autopsies, 43 were in patients with a primary diagnosis of a neoplasia. At least one antemortem misdiagnosis and/or clinically occult process was identified in 20.5% of all pediatric autopsy cases, and in 25.6% of pediatric oncology cases. These rates did not change significantly over time. In 10 of 43 pediatric oncology cases (23.3%), autopsies provided diagnostic information that was previously unknown to the clinicians. Three of these patients died shortly after presentation. Although autopsy rates for fetal/perinatal cases have declined, those for non-perinatal and pediatric oncology patients remain stable. Autopsy continues to provide diagnostic information that is unknown during the antemortem period, and remains a valuable tool for pediatricians and pediatric oncologists.


Assuntos
Autopsia/estatística & dados numéricos , Causas de Morte , Adolescente , Criança , Pré-Escolar , Erros de Diagnóstico , Humanos , Achados Incidentais , Lactente , Recém-Nascido , Oncologia/estatística & dados numéricos , Fatores de Tempo
13.
Dig Dis Sci ; 51(1): 47-53, 2006 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-16416211

RESUMO

We herein describe the clinical course of a consecutive series of fulminant hepatic failure patients treated with a molecular adsorbent recirculating system (MARS), a cell-free albumin dialysis technique. From November 2000 to September 2002, seven adult patients ages 22-61 (median, 41), one male (14.2%) and six females (85.7%), affected by fulminant hepatic failure underwent seven courses (one to five sessions each, 6 hr in duration) of extracorporeal support using the MARS technique. Pre- and posttreatment blood glucose, liver function tests, ammonia, arterial lactate, electrolytes, hemodynamic parameters, arterial blood gases, liver histology, Glasgow Coma Scale, and coagulation studies were reviewed. No adverse side effects such as generalized bleeding on noncardiogenic pulmonary edema, often seen during MARS treatment, occurred in the patients included in this study. Six patients (85.7%) are currently alive and well, and one (14.2%) died. Four patients (57%) were successfully bridged (two patients in 1 day and two other patients in 4 days) to liver transplantation, while two (5%) recovered fully without transplantation. All the measured variables stabilized after commencement of the MARS. No differences were noted between the pre- and the post-MARS histology. We conclude that the MARS is a safe, temporary life support mechanism for patients awaiting liver transplantation or recovering from fulminant hepatic failure.


Assuntos
Falência Hepática Aguda/terapia , Transplante de Fígado , Cuidados Pré-Operatórios/métodos , Diálise Renal/métodos , Desintoxicação por Sorção , Adulto , Biópsia , Feminino , Seguimentos , Humanos , Falência Hepática Aguda/patologia , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Índice de Gravidade de Doença , Fatores de Tempo , Resultado do Tratamento , Listas de Espera
14.
Liver Transpl ; 11(11): 1353-60, 2005 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-16237715

RESUMO

The purpose of this retrospective study was to examine the potential role of cerebral hemodynamic and metabolic factors in the outcome of patients with fulminant hepatic failure (FHF). Based on the literature, a hypothetical model was proposed in which physiologic changes progress sequentially in five phases, as defined by intracranial pressure (ICP) and cerebral blood flow (CBF) measurements. Seventy-six cerebral physiologic profiles were obtained in 26 patients (2 to 5 studies each) within 6 days of FHF diagnosis. ICP was continuously measured by an extradural fiber optic monitor. Global CBF estimates were obtained by xenon clearance techniques. Jugular venous and peripheral artery catheters permitted calculation of cerebral arteriovenous oxygen differences (AVDO2), from which cerebral metabolic rate for oxygen (CMRO2) was derived. A depressed CMRO2 was found in all patients. There was no evidence of cerebral ischemia as indicated by elevated AVDO2s. Instead, over 65% of the patients revealed cerebral hyperemia. Eight of the 26 patients underwent orthotopic liver transplantation-all recovered neurologically, including 6 with elevated ICPs. Of the 18 patients receiving medical treatment only, all 7 with increased ICP died in contrast to 9 survivors whose ICP remained normal (P < 0.004). Hyperemia, per se, was not related to outcome, although it occurred more frequently at the time of ICP elevations. Six patients were studied during brain death. All 6 revealed malignant intracranial hypertension, preceded by hyperemia. In conclusion, the above findings are consistent with the hypothetical model proposed. Prospective longitudinal studies are recommended to determine the precise evolution of the pathophysiologic changes.


Assuntos
Encéfalo/metabolismo , Circulação Cerebrovascular/fisiologia , Encefalopatia Hepática/diagnóstico , Pressão Intracraniana/fisiologia , Falência Hepática Aguda/diagnóstico , Adulto , Progressão da Doença , Ecoencefalografia/métodos , Feminino , Encefalopatia Hepática/mortalidade , Encefalopatia Hepática/terapia , Humanos , Falência Hepática Aguda/mortalidade , Falência Hepática Aguda/terapia , Masculino , Pessoa de Meia-Idade , Monitorização Fisiológica/métodos , Valor Preditivo dos Testes , Probabilidade , Prognóstico , Estudos Retrospectivos , Medição de Risco , Índice de Gravidade de Doença , Taxa de Sobrevida , Ultrassonografia Doppler Transcraniana
15.
J Artif Organs ; 6(4): 282-5, 2003.
Artigo em Inglês | MEDLINE | ID: mdl-14691671

RESUMO

Noncardiogenic pulmonary edema is a well-recognized manifestation of acute lung injury which has been related, among others, to blood or blood-product transfusion, intravenous contrast injection, air embolism, and drug ingestion. We describe two cases of noncardiogenic pulmonary edema after use of a molecular adsorbent recirculating system, a cell-free dialysis technique. Patients in this series presented at our institution to be evaluated for liver transplantation. Subsequently, they developed an indication for the molecular adsorbent recirculating system. Two patients of 30 (6.6%) treated with the molecular adsorbent recirculating system for acute-on-chronic liver failure and intractable pruritus had normal chest X-rays before treatment and developed severe pulmonary edema, in the absence of cardiogenic causes, following use of the molecular adsorbent recirculating system. For each patient we reviewed the history of blood or blood-product transfusion, echocardiograms if available, daily chest X-rays, and when available pre- and postmolecular adsorbent recirculating systemic blood pressure, central venous pressure, pulmonary arterial pressures, cardiac output, cardiac index, systemic vascular resistance index, and arterial blood gas. Our data suggest that the molecular adsorbent recirculating system may cause noncardiogenic pulmonary edema, possibly by an immune-mediated mechanism.


Assuntos
Falência Hepática Aguda/terapia , Fígado Artificial/efeitos adversos , Diálise Peritoneal/efeitos adversos , Edema Pulmonar/etiologia , Idoso , Progressão da Doença , Evolução Fatal , Encefalopatia Hepática/diagnóstico , Encefalopatia Hepática/terapia , Humanos , Falência Hepática Aguda/diagnóstico , Masculino , Pessoa de Meia-Idade , Diálise Peritoneal/métodos , Edema Pulmonar/diagnóstico por imagem , Radiografia Torácica , Medição de Risco , Índice de Gravidade de Doença
16.
Clin Transplant ; 18(4): 365-71, 2004 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-15233811

RESUMO

Coagulopathy is a life-threatening complication of liver cirrhosis. We describe the effect of molecular adsorbent recirculating system (MARS), a cell-free dialysis technique, on the blood coagulation of cirrhotic patients. From February 2002 to July 2002, nine patients--five males (55.5%) and four females (44.4%), age 47-70 yr (median 56)--underwent 12 courses (4-7 sessions each) of MARS. Patients were treated for the following indications: six (66.6%) acute-on-chronic hepatic failure, three (33.3%) intractable pruritus. Platelet count, prothrombin time (PT), international standardized ratio and thromboelastography were measured before and after each MARS session. Coagulation factors II, V, VII, VIII, IX, X, XI, XII, XIII, von Willebrand, lupus anticoagulant, protein C, protein S, antithrombin III, plasminogen, alpha 2 antiplasmin, D-dimer, fibrin monomers, complement, and C(1) inactivator were measured before and at the end of each MARS treatment. We found a statistically significant difference (p < 0.05) in the platelet count, PT, all the thromboelastograph variables (reaction and constant time, alpha angle, and maximal amplitude), factor VIII, von Willebrand, and D-dimer, when measured before and after MARS. Previous reports have shown amelioration of blood coagulation following MARS treatments. However, we document that MARS induces coagulopathy through a platelet-mediated mechanism, whereby platelet may be mechanically destroyed during the passage of blood through the filters and lines. An alternative postulated mechanism is an immune-mediated platelet disruption - coagulopathy.


Assuntos
Coagulação Sanguínea , Cirrose Hepática/fisiopatologia , Cirrose Hepática/terapia , Falência Hepática Aguda/terapia , Fígado Artificial , Tromboelastografia , Idoso , Transtornos da Coagulação Sanguínea/etiologia , Feminino , Humanos , Masculino , Membranas Artificiais , Pessoa de Meia-Idade , Estudos Retrospectivos , Ultrafiltração
17.
J Assoc Acad Minor Phys ; 13(2): 57-8, 2002 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-12362569

RESUMO

Percutaneous endoscopic gastrostomy (PEG), a safe and effective procedure, is an alternative to open gastrostomy. There are two techniques of placing PEG tubes. One technique consists of a pull-string Ponsky-Gauderer type gastrostomy and the other a push-over-wire Sachs-Vine type gastrostomy. After the gastrostomy tube is positioned, a repeat endoscopy is performed to determine optimal placement of the PEG tube. The purpose of this study was to determine the necessity of a repeat endoscopy to determine the optimal positioning of the PEG tube. Charts of 132 patients who underwent a PEG procedure between July 1, 1994 and September 30, 1996 were reviewed. Specifically, we assessed whether the endoscopist changed the position of the bumper during repeat endoscopy after PEG placement. PEG was performed successfully in 125 of 132 adult patients. Of 125 patients, the endoscope was reintroduced after PEG in 110 patients. A minor adjustment was defined as repositioning of the bumper by < or = 1.0 cm and a major adjustment as > 1.0 cm. The endoscopist made no adjustment in initial placement of the gastrostomy tube bumpers in 102 of 110 patients (93%). A minor adjustment was made in 5 patients (4%), and a major adjustment was made in 3 patients (3%). Therefore, in 102 of 110 patients (93%), initial placement of the gastrostomy tube bumpers was felt to be adequate, and repeat endoscopy was not necessary. Thus, repeat endoscopy is not routinely required to assess the proper positioning of the internal bumper. Repeat endoscopy should be at the discretion of the endoscopist if there is suspicion of improper positioning of the bumper along the gastric mucosa.


Assuntos
Endoscopia Gastrointestinal , Gastrostomia/métodos , Idoso , Feminino , Humanos , Masculino , Retratamento
18.
Liver Transpl ; 9(4): 437-43, 2003 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-12682899

RESUMO

Intractable pruritus is more common in cholestatic liver diseases and may be the presenting symptom and/or major complaint of hepatitis C and/or hepatitic C virus-related cirrhosis. From September 2000 to May 2002, three patients affected by intractable pruritus secondary to hepatitis C cirrhosis that failed medical treatment were treated with a molecular adsorbent recirculating system (MARS). MARS is an artificial liver support system that aims to clear the blood of metabolic waste products normally metabolized by the liver. Each patient underwent seven MARS sessions. Liver function tests, the 36-Item Short Form quality-of-life test, visual analog scale for itching, and bile acid measurement in the serum, albumin circuit and ultrafiltrate were performed before and after each MARS session. Moreover, at hospital admission, each patient underwent a psychological workup and abdominal imaging study. Subjective improvement in pruritus and quality of life, along with a decrease in serum bile acid concentration, was observed in every patient; no patient underwent retreatment and/or liver transplantation up to a 9-month follow-up. One patient died 201 days after MARS treatment. Although we observed a decreased level of serum bile acids, one cannot conclude that this was the mechanism of action for the reduction in pruritus intensity in patients in our series. Different toxins and/or a placebo effect might have had a role in this setting.


Assuntos
Hepatite C/complicações , Cirrose Hepática/complicações , Cirrose Hepática/virologia , Fígado Artificial , Prurido/etiologia , Prurido/cirurgia , Idoso , Ácidos e Sais Biliares/sangue , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Concentração Osmolar , Período Pós-Operatório , Qualidade de Vida , Resultado do Tratamento
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