211 results on '"Hanto, Douglas W"'
Search Results
202. Patients' expectations and success criteria for liver transplantation.
- Author
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Rodrigue JR, Hanto DW, and Curry MP
- Subjects
- Activities of Daily Living, Affective Symptoms psychology, Attitude to Death, Attitude to Health, Fatigue psychology, Female, Humans, Liver Failure surgery, Male, Middle Aged, Pain psychology, Patient Satisfaction, Reproducibility of Results, Surveys and Questionnaires standards, Health Status, Liver Failure psychology, Liver Transplantation psychology, Quality of Life, Waiting Lists
- Abstract
Patient-reported outcomes are important to consider when the relative success of liver transplantation (LT) is being evaluated. Our primary objective was to examine the expectations for LT and the criteria for its success across 4 domains of functioning (pain, fatigue, emotional distress, and interference with daily activities) from the perspective of patients who were wait-listed for LT. One hundred four adult patients with a mean wait-list time of 16.5 ± 13 months completed a semistructured interview with a modified version of the Patient-Centered Outcomes Questionnaire (PCOQ). The patients reported moderate usual levels of pain, fatigue, emotional distress, and interference with daily activities (mean rating range = 3.8-6.2), and they attached great importance to improvements in these domains after LT (mean rating range = 7.3-8.0). Patients considered a mean reduction in pain of 33% to be a successful LT outcome. A reduction in fatigue of 56%, a reduction in emotional distress of 44%, and a reduction in interference with daily activities of 54% represented successful LT across these domains. Patients with more severe illness had higher expectations for fatigue (r = -0.30, P = 0.002) and interference with daily activities (r = -0.24, P = 0.015). Cluster and correlational analyses provided support for the validity of the PCOQ with LT patients. Our findings underscore the importance and value of using patient-centered assessments to better understand the ways in which patients prioritize LT outcomes and define transplantation success. Patient-centered assessments have the potential to facilitate provider-patient communication by helping patients to prioritize their goals for LT and make informed choices on the basis of those priorities., (Copyright © 2011 American Association for the Study of Liver Diseases.)
- Published
- 2011
- Full Text
- View/download PDF
203. Carbon monoxide enhances early liver regeneration in mice after hepatectomy.
- Author
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Kuramitsu K, Gallo D, Yoon M, Chin BY, Csizmadia E, Hanto DW, and Otterbein LE
- Subjects
- Animals, Body Weight drug effects, Cell Cycle drug effects, Cell Cycle physiology, Cell Proliferation drug effects, Cytokines metabolism, Heme Oxygenase-1 deficiency, Heme Oxygenase-1 genetics, Hepatocyte Growth Factor metabolism, Kaplan-Meier Estimate, Liver metabolism, Liver Regeneration physiology, Male, Mice, Mice, Inbred C57BL, Mice, Knockout, Models, Animal, Signal Transduction drug effects, Signal Transduction physiology, Carbon Monoxide pharmacology, Hepatectomy, Liver cytology, Liver surgery, Liver Regeneration drug effects
- Abstract
Hepatocyte proliferation early after liver resection is critical in restoring liver mass and preserving function as the liver regenerates. Carbon monoxide (CO) generated by heme oxygenase-1 (HO-1) strongly influences cellular proliferation and both HO-1 and CO are accepted hepatoprotective molecules. Mice lacking functional HO-1 were unable to mount an appropriate regenerative response following partial hepatectomy (PHTx) compared to wildtype controls. We therefore hypothesized that exogenous administration of CO at low, nontoxic concentrations would modulate hepatocyte (HC) proliferation and liver regeneration. Animals treated with a low concentration of CO 1 hour prior to 70% hepatectomy demonstrated enhanced expression of hepatocyte growth factor (HGF) in the liver compared to controls that correlated with a more rapid onset of HC proliferation as measured by phospho-histone3 staining, increased expression of cyclins D1 and E, phosphorylated retinoblastoma, and decreased expression of the mitotic inhibitor p21. PHTx also increased activation of the HGF receptor c-Met, which was detected more then 9 hours earlier in the livers of CO-treated mice. Blockade of c-Met resulted in abrogation of the CO effects on HC proliferation. Corresponding with increased HC proliferation, treatment with CO maintained liver function with normal prothrombin times versus a 2-fold prolongation in controls. In a lethal 85% PHTx, CO-treated mice showed a greater survival rate compared to controls. In vitro, CO increased HGF expression in hepatic stellate cells, but not HC, and when cocultured together led to increased HC proliferation. In summary, we demonstrate that administration of exogenous CO enhances rapid and early HC proliferation and, importantly, preserves function following PHTx. Taken together, CO may offer a viable therapeutic option to facilitate rapid recovery following PHTx., (Copyright © 2011 American Association for the Study of Liver Diseases.)
- Published
- 2011
- Full Text
- View/download PDF
204. Is it always wrong to perform futile CPR?
- Author
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Hanto DW and Ladin K
- Subjects
- Family, Humans, Cardiopulmonary Resuscitation ethics, Medical Futility ethics, Patient Rights
- Published
- 2010
- Full Text
- View/download PDF
205. Intraoperative margin re-resection for colorectal liver metastases.
- Author
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Wray CJ, Lowy AM, Matthews JB, James LE, Mammen JM, Choe KA, Hanto DW, and Ahmad SA
- Subjects
- Adult, Aged, Colorectal Neoplasms surgery, Female, Humans, Intraoperative Period, Liver Neoplasms mortality, Liver Neoplasms surgery, Male, Middle Aged, Neoplasm Recurrence, Local, Retrospective Studies, Survival Analysis, Colorectal Neoplasms pathology, Liver Neoplasms secondary
- Abstract
Objective: Evaluate recurrence and survival in patients who underwent intraoperative margin re-resection for colorectal cancer liver (CRC) metastases., Design: Retrospective analysis., Setting: University Hospital, Cincinnati, Ohio. Academic medical center., Participants: Cohort of 118 patients who underwent resection of CRC liver metastases between 1992 and 2004. All patients were divided into 3 groups: resection margin (MOR) less than 1 cm (n = 64), MOR greater than 1 cm (n = 33), and re-resection margin (re-MOR) greater than 1 cm (n = 21)., Results: Patients with a margin greater than 1 cm, when compared with re-MOR greater than 1 had decreased incidence of liver and distant recurrence (p < 0.05) as well as improved disease-free survival (39.2 vs 22.9 months, p = 0.023). Differences in overall survival (58.6 vs 44.2 months, p = 0.14) were not significant., Conclusion: Intraoperative re-resection is associated with an increased risk of local and distant recurrence, which may be a reflection of both inadequate surgery and underlying tumor biology.
- Published
- 2007
- Full Text
- View/download PDF
206. Ethical challenges posed by the solicitation of deceased and living organ donors.
- Author
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Hanto DW
- Subjects
- Directed Tissue Donation ethics, Directed Tissue Donation legislation & jurisprudence, Humans, Living Donors ethics, Resource Allocation ethics, Tissue and Organ Procurement legislation & jurisprudence, Tissue and Organ Procurement methods, United States, Waiting Lists, Advertising ethics, Health Care Rationing ethics, Tissue Donors ethics, Tissue and Organ Procurement ethics
- Published
- 2007
- Full Text
- View/download PDF
207. Family Disagreement over Organ Donation.
- Author
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Hanto DW, Peters TG, Howard RJ, and Cornell D
- Published
- 2005
- Full Text
- View/download PDF
208. Liver and intestine transplantation: summary analysis, 1994-2003.
- Author
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Hanto DW, Fishbein TM, Pinson CW, Olthoff KM, Shiffman ML, Punch JD, and Goodrich NP
- Subjects
- Adolescent, Adult, Child, Child, Preschool, Ethnicity, Female, Humans, Infant, Infant, Newborn, Living Donors, Male, Middle Aged, Time Factors, Waiting Lists, Intestines transplantation, Liver Transplantation statistics & numerical data
- Abstract
With nearly two years of data available since the inception of the MELD and PELD allocation system, this article examines national OPTN/SRTR data to describe trends in waiting list composition, waiting list mortality, transplant rates, and patient and graft outcomes for liver transplantation. Following a 6% reduction in the size of the waiting list after MELD was implemented in 2002, the number of patients on the waiting list grew by 2% from 2002 to 2003, while the number of liver transplants increased by 6%. The overall death rate while on the liver waiting list has decreased from 225 deaths per 1,000 patient years in 1994 to 124 deaths in 2003. As with the waiting list death rates, post-transplant death rates have also decreased over the past decade. Unadjusted one-year patient survival was lower for older donor age groups (88% for donors aged 18-34, 87% for donors aged 35-49, 85% for donors aged 50-64); a similar trend was observed at three and five years following transplantation. Intestine transplantation is performed with slowly increasing frequency and success. Early graft losses and rejection rates have changed little since 1994, but rejection is easier to control and long-term survival is improving.
- Published
- 2005
- Full Text
- View/download PDF
209. Atypical radiological presentation of progressive multifocal leukoencephalopathy following liver transplantation.
- Author
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Lima MA, Hanto DW, Curry MP, Wong MT, Dang X, and Koralnik IJ
- Subjects
- Adult, Brain pathology, Brain virology, Diagnosis, Differential, Female, Humans, Immunocompromised Host, JC Virus, Leukoencephalopathy, Progressive Multifocal pathology, Prognosis, Radiography, Brain diagnostic imaging, Leukoencephalopathy, Progressive Multifocal diagnostic imaging, Leukoencephalopathy, Progressive Multifocal virology, Liver Transplantation
- Abstract
Progressive multifocal leukoencephalopathy (PML), a demyelinating disease of the brain caused by JC virus (JCV), occurs following transplantation and other conditions associated with immunosuppression. On magnetic resonance imaging (MRI), PML lesions typically appear as hyperintense signal on T2-weighted and FLAIR images located in the subcortical white matter, which are devoid of contrast enhancement or mass effect. The prognosis is poor, but unusual inflammatory forms of PML characterized by contrast enhancement have been associated with a cellular immune response against JCV and a better prognosis. The authors report an atypical presentation of PML with contrast-enhancing lesions and mass effect on the MRI in a liver transplant recipient,who had a progressive course and fatal outcome.
- Published
- 2005
- Full Text
- View/download PDF
210. Liver and intestine transplantation.
- Author
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Brown RS, Rush SH, Rosen HR, Langnas AN, Klintmalm GB, Hanto DW, and Punch JD
- Subjects
- Humans, Liver Transplantation mortality, Liver Transplantation trends, Living Donors statistics & numerical data, Registries, Survival Analysis, Tissue and Organ Procurement methods, Tissue and Organ Procurement organization & administration, Transplantation, Homologous mortality, Transplantation, Homologous trends, Waiting Lists, Intestines transplantation, Liver Transplantation statistics & numerical data, Transplantation, Homologous statistics & numerical data
- Abstract
The most significant development in liver transplantation in the USA over the past year was the full implementation of the MELD- and PELD-based allocation policy in March 2002, which shifted emphasis from waiting time within broad medical urgency status to prioritization by risk of waiting list death. The implementation of this system has led to a decrease in pretransplant mortality without increasing post-transplant mortality, despite a higher severity of illness at the time of transplant. The trend over the last few years of rapidly increasing numbers of adult living donor liver transplants was reversed in 2002 by a decline of more than 30% in the number of these procedures. In 2002, a greater percentage of women received livers from living donors (43%) than deceased donors (34%), possibly because of size considerations. From 1993 to 2001, the waiting list increased more than sixfold, from 2902 patients to 18,047 patients. For the first time since 1993, the waiting list size decreased in 2002, dropping 6% to 16,974 candidates. The percentage of temporarily inactive liver candidates also increased from 2001, thus the net decrease in the active waiting list for 2002 was 12%. This may reflect a trend toward less pre-emptive listing practices under MELD. Intestine transplantation remains a low-volume procedure limited to a few transplant centers and is still accompanied by significant pre- and post-transplantation risks. As this procedure matures, its application may increase to include recipients at an earlier stage of their disease with better likelihood of success.
- Published
- 2004
- Full Text
- View/download PDF
211. A 50-year-old man with hepatitis C and cirrhosis needing liver transplantation.
- Author
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Hanto DW
- Subjects
- Contraindications, Hepatitis C complications, Humans, Liver Cirrhosis complications, Male, Middle Aged, Prognosis, Waiting Lists, Hepatitis C surgery, Liver Cirrhosis surgery, Liver Transplantation adverse effects, Liver Transplantation psychology
- Published
- 2003
- Full Text
- View/download PDF
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