Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 55
Filtrar
1.
Swiss Med Wkly ; 152: w30139, 2022 02 14.
Artículo en Inglés | MEDLINE | ID: mdl-35201682

RESUMEN

AIMS OF THE STUDY: Organ donation after circulatory death (DCD) was reintroduced in Switzerland in 2011 and accounts for a third of deceased organ donors today. Controversy persists if DCD transplants are of similar quality to transplants following donation after brain death (DBD), mainly due to warm ischaemia time DCD organs are exposed to. We compared DCD with DBD in Switzerland. METHODS: Data on deceased adults who were referred to and approved for organ donation from 1 September 2011 to 31 December 2019 were retrospectively analysed (217 DCD, 840 DBD donors). We compared DCD and DBD donor/organ characteristics, transplant rates of lungs, liver, kidneys, and pancreas, and early liver and kidney graft function in the recipient. The effect of DCD/DBD on transplant rates (organ transplanted or not) and 72-hour recipient graft function (moderate/good vs delayed graft function / organ loss) was analysed using multivariable logistic regression. Among utilised DCD donors, we analysed the effect of functional warm ischaemia time (FWIT) and donor age on 72-hour post-transplant liver and kidney graft function, also using multivariable logistic regression. RESULTS: DCD donors were more often male (64.5% vs 56.8% p = 0.039), presented with heart disease (36.4% vs 25.5%, p <0.001), were resuscitated before hospital admission (41.9% vs 30.7%, p = 0.006), and died from anoxia (41.9% vs 23.9%). Kidney function before transplantation was comparable, lung, liver and pancreas function were poorer in DCD than DBD. Eighty-one and 91% of approved DCD and DBD donors were utilised (p <0.001). Median FWIT in DCD was 29 minutes (interquartile range 25-35). DCD transplant rates ranged from 4% (pancreas) to 73% (left kidney) and were all lower compared with DBD. Seventy-two-hour liver graft function was comparable between DCD and DBD (94.2% vs 96.6% moderate/good, p = 0.199). DCD kidney transplants showed increased risk of delayed graft function or early organ loss (odds ratios 8.32 and 5.05; 95% confidence intervals CI 5.28-13.28 and 3.22-7.95; both p <0.001, for left and right kidney transplants, respectively). No negative effect of prolonged FWIT or higher donor age was detected. CONCLUSION: Despite less favourable donor/organ characteristics compared with donation after brain death, donation after circulatory death donors are increasingly referred and today provide an important source for scarce transplants in Switzerland. We identified a higher risk for delayed graft function or early organ loss for DCD kidney transplants, but not for DCD liver transplants. When carefully selected and allowed for other risk factors in organ allocation, prolonged functional warm ischaemia time or higher age in donation after circulatory death does not seem to be associated with impaired graft function early after transplantation.


Asunto(s)
Muerte Encefálica , Obtención de Tejidos y Órganos , Adulto , Anciano , Muerte , Supervivencia de Injerto , Humanos , Masculino , Estudios Retrospectivos , Suiza , Donantes de Tejidos
2.
Clin Transplant ; 35(7): e14335, 2021 07.
Artículo en Inglés | MEDLINE | ID: mdl-33948997

RESUMEN

Chronic organ shortage remains the most limiting factor in lung transplantation. To overcome this shortage, a minority of centers have started with efforts to reintroduce donation after circulatory death (DCD). This review aims to evaluate the experimental background, the current international clinical experience, and the further potential and challenges of the different DCD categories. Successful strategies have been implemented to reduce the problems of warm ischemic time, thrombosis after circulatory arrest, and difficulties in organ assessment, which come with DCD donation. From the currently reported results, controlled-DCD lungs are an effective and safe method with good mid-term and even long-term survival outcomes comparable to donation after brain death (DBD). Primary graft dysfunction and onset of chronic allograft dysfunction seem also comparable. Thus, controlled-DCD lungs should be ceased to be treated as marginal and instead be promoted as an equivalent alternative to DBD. A wide implementation of controlled-DCD-lung donation would significantly decrease the mortality on the waiting list. Therefore, further efforts in establishment of legislation and logistics are crucial. With regard to uncontrolled DCD, more data are needed analyzing long-term outcomes. To help with the detailed assessment and improvement of uncontrolled or otherwise questionable grafts after retrieval, ex-vivo lung perfusion is promising.


Asunto(s)
Trasplante de Pulmón , Obtención de Tejidos y Órganos , Muerte Encefálica , Muerte , Supervivencia de Injerto , Humanos , Pulmón , Estudios Retrospectivos , Donantes de Tejidos
3.
PLoS One ; 14(2): e0211614, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-30735508

RESUMEN

This study investigated the critical care staff's attitude, knowledge and involvement with donation, skills and confidence with donation-related tasks and their association with consent rates at the hospital level. In 2015, we conducted a cross-sectional survey among critical care staff of hospitals involved in organ donation using an anonymous online questionnaire with a response rate of 56.4% (n = 2799). The hospital level consent rate was obtained from the Swiss Monitoring of Potential Donors database (2013-2015). For each hospital, we calculated a mean score for each predictor of interest of the Hospital Attitude Survey and investigated the association with hospital consent rates with generalized linear mixed-effect models. In univariable analysis, one score point increase in doctors' confidence resulted in a 66% (95% CI: 45%-80%) reduction in the odds to consent, and one score point increase in nurses' attitudes resulted in a 223% (95% CI: 84%-472%) increase in the odds to consent. After simultaneously adjusting for all major predictors found in the crude models, only levels of education of medical and nursing staff remained as significant predictors for hospital consent rates. In Switzerland, efforts are needed to increase consent rates for organ donation and should concentrate on continuous support as well as specific training of the hospital staff involved in the donation process.


Asunto(s)
Cuidados Críticos/estadística & datos numéricos , Conocimientos, Actitudes y Práctica en Salud , Hospitales/estadística & datos numéricos , Consentimiento Informado/estadística & datos numéricos , Obtención de Tejidos y Órganos/estadística & datos numéricos , Actitud del Personal de Salud , Estudios Transversales , Femenino , Humanos , Conocimiento , Masculino , Personal de Enfermería en Hospital/estadística & datos numéricos , Trasplante de Órganos/estadística & datos numéricos , Médicos , Encuestas y Cuestionarios , Suiza , Donantes de Tejidos/estadística & datos numéricos
5.
BMC Health Serv Res ; 18(1): 876, 2018 Nov 20.
Artículo en Inglés | MEDLINE | ID: mdl-30458762

RESUMEN

BACKGROUND: Various actions have been taken during the last decade to increase the number of organs from deceased donors available for transplantation in Switzerland. This study provides an overview on key figures of the Swiss deceased organ donation and transplant activity between 2008 and 2017. In addition, it puts the evolution of the Swiss donation program's efficiency in relation to the situation in the neighboring countries. METHODS: This study is an analysis of prospective registry data, covering the period from 1 January 2008 to 31 December 2017. It includes all actual deceased organ donors (ADD) in Switzerland. Donor data were extracted from the Swiss Organ Allocation System. The "donor conversion index" (DCI) methodology and data was used for the comparison of donation program efficiency in Switzerland, Germany, Austria, Italy and France. RESULTS: During the study period there were 1116 ADD in Switzerland. The number of ADD per year increased from 91 in 2008 to 145 in 2017 (+ 59%). The reintroduction of the donation after cardiocirculatory death (DCD) program in 2011 resulted in the growth of annual percentages of DCD donors, reaching a maximum of 27% in 2017. The total number of organs transplanted from ADD was 3763 (3.4 ± 1.5 transplants per donor on average). Of these, 48% were kidneys (n = 1814), 24% livers (n = 903), 12% lungs (n = 445), 9% hearts (n = 352) and 7% pancreata or pancreatic islets (n = 249). The donation program efficiency assessment showed an increase of the Swiss DCI from 1.6% in 2008 to 2.7% in 2017 (+ 69%). The most prominent efficiency growth was observed between 2012 and 2017. Even though Swiss donation efficiency increased during the study period, it remained below the DCI of the French and Austrian donation programs. CONCLUSION: Swiss donation activity and efficiency grew during the last decade. The increased donation efficiency suggests that measures implemented so far were effective. The lower efficiency of the Swiss donation program, compared to the French and Austrian programs, may likely be explained by the lower consent rate in Switzerland. This issue should be addressed in order to achieve the goal of more organs available for transplantation.


Asunto(s)
Donantes de Tejidos/estadística & datos numéricos , Obtención de Tejidos y Órganos/tendencias , Austria , Muerte Encefálica , Eficiencia Organizacional , Femenino , Predicción , Francia , Alemania , Paro Cardíaco , Humanos , Italia , Masculino , Persona de Mediana Edad , Evaluación de Programas y Proyectos de Salud , Estudios Prospectivos , Sistema de Registros , Suiza
6.
Transplantation ; 102(10): 1768-1778, 2018 10.
Artículo en Inglés | MEDLINE | ID: mdl-29677069

RESUMEN

BACKGROUND: The donation rate (DR) per million population is not ideal for an efficiency comparison of national deceased organ donation programs. The DR does not account for variabilities in the potential for deceased donation which mainly depends on fatalities from causes leading to brain death. In this study, the donation activity was put into relation to the mortality from selected causes. Based on that metric, this study assesses the efficiency of different donation programs. METHODS: This is a retrospective analysis of 2001 to 2015 deceased organ donation and mortality registry data. Included are 27 Council of Europe countries, as well as the United States. A donor conversion index (DCI) was calculated for assessing donation program efficiency over time and in international comparisons. RESULTS: According to the DCI and of the countries included in the study, Spain, France, and the United States had the most efficient donation programs in 2015. Even though mortality from the selected causes decreased in most countries during the study period, differences in international comparisons persist. This indicates that the potential for deceased organ donation and its conversion into actual donation is far from being similar internationally. CONCLUSIONS: Compared with the DR, the DCI takes into account the potential for deceased organ donation, and therefore is a more accurate metric of performance. National donation programs could optimize performance by identifying the areas where most potential is lost, and by implementing measures to tackle these issues.


Asunto(s)
Comparación Transcultural , Eficiencia Organizacional , Trasplante de Órganos/estadística & datos numéricos , Donantes de Tejidos/estadística & datos numéricos , Obtención de Tejidos y Órganos/estadística & datos numéricos , Causas de Muerte , Europa (Continente)/epidemiología , Humanos , Sistema de Registros/estadística & datos numéricos , Estudios Retrospectivos , Obtención de Tejidos y Órganos/organización & administración , Estados Unidos/epidemiología
7.
Swiss Med Wkly ; 148: w14614, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-29689119

RESUMEN

AIM: Various scoring systems aim to assess the quality of organs donated for transplantation on the basis of patient characteristics, clinical examination and laboratory results. How well such scoring systems reflect the practice in lung transplantation in Switzerland has never been studied. Therefore, we evaluated two scoring systems for their ability to predict whether or not donor lungs are accepted by the two Swiss lung transplant centres. METHODS: We retrospectively analysed patient data of adult deceased organ donors in Switzerland between 1 July 2007 and 30 June 2014. Included were all donors from whom at least one organ was transplanted. We evaluated two lung donor quality scores, the multicentre-developed Eurotransplant donor score (EDS), and the single-centre-developed Zurich donor score (ZDS). Both scores were slightly adapted to be applicable to Swiss deceased organ donor data. We evaluated whether these scores can predict whether lungs were transplanted or refused by Swiss transplant centres, using univariate logistic regression. We further assessed their discriminative power by calculating the area under the receiver operating characteristic curve (AUC). RESULTS: Of the 635 donors included in our analysis, 295 (46%) were accepted as lung donors by one of the two lung transplant centres in Switzerland. Our analysis showed that both scores can predict whether or not a donor lung is likely to be accepted for transplantation in Switzerland. As the score value of a donor increases, the odds of the lung being transplanted significantly decreases (odds ratio [OR] 0.58, 95% confidence interval [CI] 0.51-0.65 for the adapted EDS; OR 0.35, 95% CI 0.28-0.43 for the adapted ZDS). This effect is slightly more pronounced in the adapted ZDS than in the adapted EDS. The discriminatory power of the scores from the AUC was 0.719 (95% CI 0.680-0.758) for the adapted EDS, and 0.723 (95% CI 0.681-0.760) for the adapted ZDS, which for both was deemed fair discrimination. CONCLUSIONS: Both scoring systems are able to predict whether or not donor lungs are accepted by the two Swiss lung transplant centres. As an alternative to adapting an established scoring system, a national lung quality score could be derived de novo. This could be based on a logistic regression analysis including the most relevant donor characteristics. However, such a new score would need to be validated on an independent sample and ideally tested for its predictive value in terms of post-transplantation outcome.


Asunto(s)
Algoritmos , Selección de Donante/normas , Trasplante de Pulmón , Obtención de Tejidos y Órganos/normas , Femenino , Humanos , Masculino , Persona de Mediana Edad , Asignación de Recursos/normas , Estudios Retrospectivos , Factores de Riesgo , Suiza , Resultado del Tratamiento
8.
Swiss Med Wkly ; 147: w14401, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-28165540

RESUMEN

BACKGROUND: Organs donated for transplantation remain a scarce resource in Switzerland. One of the reasons for this situation is the high percentage of patients or families who refuse to consent to donation. This study aimed to provide an overview of attitudes towards organ donation among Swiss residents, including any intention to donate organs after death, and whether they had already declared their wish and/or communicated it to anyone. METHODS: A representative poll investigating the attitude of the Swiss population towards deceased organ donation was conducted between 16 and 28 March 2015. Survey data were collected in 1000 structured telephone interviews. Participants consisted of residents aged 15 years and over from all Swiss regions, and covering the German, French and Italian language areas. RESULTS: Of the 1000 survey participants, 92% stated that they have a very positive (58%) or quite positive (33%) attitude towards organ donation, while 6% have a very negative (2%) or quite negative (4%) view. Some 81% of respondents said that they would be willing to donate their organs after death, and 9% expressed a wish not to become a donor. A total of 53% of participants said that they had already communicated or documented whether they wish to donate. CONCLUSION: Our study highlights the importance of continuing to raise awareness about the importance of communicating wishes, both in written form and to family members, and suggests that more work is needed to reap the benefits of the substantial support for organ donation among the Swiss population.


Asunto(s)
Conocimientos, Actitudes y Práctica en Salud , Intención , Donantes de Tejidos/psicología , Obtención de Tejidos y Órganos , Adolescente , Adulto , Comunicación , Familia , Femenino , Humanos , Masculino , Persona de Mediana Edad , Encuestas y Cuestionarios , Suiza
9.
J Thorac Dis ; 7(3): 543-8, 2015 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-25922737

RESUMEN

BACKGROUND: Organ exchange among organ procurement organisations (OPOs) serves three main purposes: firstly, it reduces the loss of donor organs for which there is no suitable recipient on the waiting list of an OPO; secondly, it improves the odds of specific patient groups for receiving a matching donor organ; thirdly, it allows an optimised donor-recipient match, due to an expansion of the donor and recipient pool. However, only few published studies provide figures for the significance of international organ sharing. This study aims to assess the impact of organ imports on the Swiss transplant activity. METHODS: We retrospectively analysed the data related to international organ exchange and its impact on the Swiss transplant activity. Information about organs from deceased donors offered by foreign OPOs was extracted from the Swiss Organ Allocation System for the period from 1 January 2009 to 31 December 2013. RESULTS: During the study period, 1028 organs were offered by foreign OPOs for allocation to patients needing transplantation in Switzerland. Of all organs offered, 35.9% originated from the Agence de la Biomédecine (France) and 25.6% from the National Health Service Blood and Transplant (United Kingdom). Totally 137 organs (13.3%) were accepted by the Swiss transplant centres for transplantation. These imported organs account for 7.2% of the transplants performed between 2009 and 2013. The impact of imported organs on the transplant activity was largest for the liver (14.2%), followed by heart (8.9%), lung (6.3%) and kidney (4.0%). CONCLUSIONS: Our study showed that international organ exchange substantially contributed to the Swiss transplant activity during the period analysed. The collaboration between OPOs can be life-saving, especially for paediatric patients and selected adult transplant candidates. More patients might benefit from organ sharing if the standards for international collaboration could be further harmonised.

11.
Swiss Med Wkly ; 144: w14045, 2014.
Artículo en Inglés | MEDLINE | ID: mdl-25341720

RESUMEN

BACKGROUND: The Swiss Monitoring of Potential Organ Donors (SwissPOD) was initiated to investigate the causes of the overall low organ donation rate in Switzerland. The objective of our study was an assessment of the donation after brain death (DBD) process in Swiss adult intensive care units (ICUs), and to provide an overview of the donation efficiency as well as of the reasons for non-donation. METHODS: SwissPOD is a prospective cohort study of all deaths in Swiss ICUs and accident and emergency departments. This study is an analysis of SwissPOD data of all patients who deceased in an adult ICU between 1 September 2011 and 31 August 2012. RESULTS: Out of 3,667 patients who died in one of the 79 adult ICUs participating in SwissPOD, 1,204 were possible, 198 potential, 133 eligible, and 94 utilised DBD donors. The consent rate was 48.0% and the conversion rate 47.5%. In 80.0% of cases, the requests for donation took place before brain death was diagnosed, resulting in a similar proportion of consents and objections as when requests were made after brain death diagnosis. CONCLUSIONS: Despite the low donation rate, Swiss adult ICUs are performing well in terms of the conversion rate, similar to major European countries. The refusal rate is among the highest in Europe, which clearly has a negative impact on the donation rate. Optimising the request process seems to be the most effective means of increasing the donation rate.


Asunto(s)
Muerte Encefálica , Servicio de Urgencia en Hospital/estadística & datos numéricos , Unidades de Cuidados Intensivos/estadística & datos numéricos , Donantes de Tejidos/estadística & datos numéricos , Obtención de Tejidos y Órganos/estadística & datos numéricos , Factores de Edad , Anciano , Anciano de 80 o más Años , Femenino , Humanos , Tiempo de Internación , Masculino , Persona de Mediana Edad , Estudios Prospectivos , Factores Sexuales , Suiza/epidemiología
12.
PLoS One ; 9(9): e106845, 2014.
Artículo en Inglés | MEDLINE | ID: mdl-25208215

RESUMEN

BACKGROUND AND AIM: Switzerland has a low post mortem organ donation rate. Here we examine variables that are associated with the consent of the deceased's next of kin (NOK) for organ donation, which is a prerequisite for donation in Switzerland. METHODS AND ANALYSIS: During one year, we registered information from NOK of all deceased patients in Swiss intensive care units, who were approached for consent to organ donation. We collected data on patient demographics, characteristics of NOK, factors related to the request process and to the clinical setting. We analyzed the association of collected predictors with consent rate using univariable logistic regression models; predictors with p-values <0.2 were selected for a multivariable logistic regression. RESULTS: Of 266 NOK approached for consent, consent was given in 137 (51.5%) cases. In multivariable analysis, we found associations of consent rates with Swiss nationality (OR 3.09, 95% CI: 1.46-6.54) and German language area (OR 0.31, 95% CI: 0.14-0.73). Consent rates tended to be higher if a parent was present during the request (OR 1.76, 95% CI: 0.93-3.33) and if the request was done before brain death was formally declared (OR 1.87, 95% CI: 0.90-3.87). CONCLUSION: Establishing an atmosphere of trust between the medical staff putting forward a request and the NOK, allowing sufficient time for the NOK to consider donation, and respecting personal values and cultural differences, could be of importance for increasing donation rates. Additional measures are needed to address the pronounced differences in consent rates between language regions.


Asunto(s)
Consentimiento Informado/estadística & datos numéricos , Obtención de Tejidos y Órganos/legislación & jurisprudencia , Obtención de Tejidos y Órganos/estadística & datos numéricos , Anciano , Familia , Femenino , Humanos , Modelos Logísticos , Masculino , Persona de Mediana Edad , Análisis Multivariante , Suiza
13.
Swiss Med Wkly ; 144: w14057, 2014.
Artículo en Inglés | MEDLINE | ID: mdl-27922169

RESUMEN

OBJECTIVE: To provide an overview of heart allocation and transplantation in Switzerland since the introduction of the Swiss Organ Allocation System (SOAS). METHODS: This study is a retrospective analysis of SOAS data related to heart transplantation between 1 July 2007 and 30 June 30 2013. RESULTS: During the study period, 300 patients were newly waitlisted for a heart transplant in Switzerland, 199 were transplanted and 52 deceased while on the waiting list. Of the 723 hearts offered by Swisstransplant to the three university hospitals with a heart transplantation programme (Bern, Lausanne and Zurich), 199 (27.5%) were transplanted. Of these, 183 (92.0%) were procured in Switzerland and 16 (8.0%) were offered by a foreign organ procurement organisation. Fifty-two hearts were transplanted to patients who were listed in urgent status, equalling an urgent transplant rate of 26.1%. Whereas the overall waiting list mortality was 19.0%, it was as high as 31.8% in patients older than 60 years. CONCLUSIONS: Our study showed a growing Swiss heart transplant waiting list, as significantly more patients were newly waitlisted than transplanted. Compared with the international data, the acceptance rate of heart offers and the rate of urgent transplantations were relatively low, while the waiting list mortality was higher. The fact that the mortality was highest in candidates aged 60 and above suggests that the new generation of ventricular assist devices as destination therapy should be considered as an alternative to transplantation in selected patients.


Asunto(s)
Trasplante de Corazón/estadística & datos numéricos , Obtención de Tejidos y Órganos/organización & administración , Listas de Espera/mortalidad , Adulto , Femenino , Humanos , Masculino , Persona de Mediana Edad , Evaluación de Resultado en la Atención de Salud , Selección de Paciente , Estudios Retrospectivos , Suiza , Obtención de Tejidos y Órganos/estadística & datos numéricos
14.
Ther Umsch ; 68(12): 673-7, 2011 Dec.
Artículo en Alemán | MEDLINE | ID: mdl-22139981

RESUMEN

The present article will give a related overview of the current background of the field of donor recruitment and transplantation medicine. The transplantation Law that came into effect on the 01.07.2007 has caused numerous changes in the identification and reporting of potential organ- and tissue donors in hospitals with accredited Intensive care units. The law has had a great influence on the allocation practice of the rare organs in Switzerland. With just 12.6 cadaveric donors per million inhabitants, Switzerland is, compared to other European countries at the bottom of the table. This is not without influence on the waiting list, which at the end of 2010 was at a new all time high with 1029 patients. We assume that almost half of the Swiss population has not yet decided if they want to donate their organs or not. The most important contact people in this subject are the practicing colleagues, by this we mean you. On a specially publicized Link [www.swisstransplant.org/medizinerinfo] you will find more information and documents that you can either put out in your practice or download them for further education. Organ donation is possible until a high age, bring this subject up with your patients, and inform them transparently and openly about this. Ask your patients to inform their loved ones of their decision for or against organ donation.


Asunto(s)
Programas Nacionales de Salud/legislación & jurisprudencia , Trasplante de Órganos/legislación & jurisprudencia , Obtención de Tejidos y Órganos/legislación & jurisprudencia , Medicina General , Humanos , Suiza , Donantes de Tejidos/legislación & jurisprudencia , Donantes de Tejidos/provisión & distribución , Listas de Espera
15.
Swiss Med Wkly ; 141: w13265, 2011.
Artículo en Inglés | MEDLINE | ID: mdl-21984183

RESUMEN

BACKGROUND: Transplantation today faces two major issues: organ shortage, and the increasing age of deceased donors. The former leads to growing waiting lists and, as a consequence, to a higher mortality of patients in need of an organ. The latter results in an augmentation of the proportion of organs from so called extended criteria donors, which, in the past, have been associated with inferior outcomes. METHODS: Retrospective analysis of the patient characteristics of all deceased organ donors in Switzerland from 1 January 1998 to 31 December 2008. A total of 1004 patient records of brain-dead organ donors (59.4% male, 40.6% female) were analysed for demographic data and causes of death. RESULTS: The average donor age increased from 43.8 ± 16.9 years in 1998 to 51.7 ± 18.0 years in 2008 (+27.6%; p <0.05). When comparing 2008 with 1998, cerebral haemorrhage accounts for 52.8% of the causes of death in 2008 (+16.7 percentage points), whereas the proportion of cranio-cerebral trauma decreased by 22 percentage points to 16.9%. The largest group of donors are the 16-55 year-olds with a 50% quota in 2008 (-23.6% compared with 1998). During the study period, the ≥65 year-old group had a 216.2% growth rate, and it accounts 26.6% of the donors in 2008 (p <0.05). CONCLUSIONS: A shift in the causes of death significantly increased the average age of donors, and transplantation medicine is confronted with a growing number of extended criteria donors. Nevertheless, 10-year survival of transplant recipients is better than ever before.


Asunto(s)
Donantes de Tejidos/clasificación , Donantes de Tejidos/provisión & distribución , Adulto , Factores de Edad , Anciano , Causas de Muerte/tendencias , Femenino , Humanos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Suiza/epidemiología
16.
Eur J Cardiothorac Surg ; 40(6): 1368-73, 2011 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-21398139

RESUMEN

OBJECTIVE: Little is known about the impact of international organ exchange on national transplant programmes. This study evaluates the relevance of hearts and lungs offered by the European Organ Exchange Organisations to Swisstransplant, Switzerland's national organ procurement organisation. METHODS: The study is a retrospective analysis of donor characteristics of 290 hearts and 199 lungs, offered by the European Organ Exchange Organisations between 1 January 2004 and 31 December 2008 to Swisstransplant. It assesses the responses (acceptance/reasons for refusal) from the Swiss heart and lung transplant centres. RESULTS: Among the 290 hearts offered by the foreign transplant organisations, eight (2.8%) were accepted by a Swiss transplant centre. This corresponds to 5.8% of the Swiss heart transplant activity during the observation period. In the lung group (n = 199), five (2.5%) were accepted, equalling 2.8% of the transplant activity. As for the reasons for refusal, approximately one-fifth and one-sixth of both the heart and lung offers were refused for medical and logistic reasons, respectively. For more than half of the offers, there was either no compatible recipient on the Swiss waiting list, or the reason for refusal was not specified. Notably, 47.6% of the offers in the heart group and 46.7% of the lung offers originated from donors aged less than 16 years. CONCLUSIONS: International organ exchange is a very valuable and effective way to allocate a maximum of medically suitable organs to recipients on the waiting list. Organ exchange is lifesaving, especially in children, and also in patients with rare blood groups. A professional structure within the national organ procurement organisations, and a close cooperation between them on an international level, is crucial to achieve organ exchange on a high-quality level in Europe.


Asunto(s)
Cooperación Internacional , Obtención de Tejidos y Órganos/organización & administración , Adolescente , Adulto , Niño , Preescolar , Selección de Donante/métodos , Selección de Donante/organización & administración , Europa (Continente) , Femenino , Trasplante de Corazón , Humanos , Trasplante de Pulmón , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Suiza , Donantes de Tejidos/estadística & datos numéricos , Donantes de Tejidos/provisión & distribución , Transportes/estadística & datos numéricos , Listas de Espera , Adulto Joven
17.
Vasa ; 39(3): 219-28, 2010 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-20737380

RESUMEN

BACKGROUND: Conservative management of acute type B aortic dissection is currently being challenged by primary thoracic endovascular aortic repair. Aim was to assess outcome and quality of life after these different approaches using an adjusted standard population as benchmark. PATIENTS AND METHODS: Observational study of a prospectively collected (January 2000 to December 2005) consecutive series of 87 patients with acute type B aortic dissection. Patients were 63 +/- 13 years old and 68 were men (78.2 %). Seventy-two were managed conservatively (83 %) and 15 invasively (12 by endovascular aortic repair). Follow-up was 36 +/- 19 months. Endpoints were early and late morbidity and mortality, and long-term quality of life as assessed by the Short Form health survey questionnaire. RESULTS: Patient cohorts were similar regarding age, risk profile and local disease. In the conservative cohort, four patients died during early (5.6 %) and eight during long-term follow-up (cumulative four years survival rate 79 %). Thirty-two patients needed secondary surgical management (44 %), i.e. delayed aortic repair (n = 11), or interventions on adjacent aortic sections or major branches (n = 21). In the surgical cohort no patient died, and no repeated interventions were necessary after the peri-operative period. Long-term quality of life scores were 100 (69-115) in conservatively and 94 (75-124) in invasively managed patients. Normal scores range from 85 to 115. CONCLUSIONS: Primary endovascular management of uncomplicated acute type B dissection is safe and leads to excellent long-term results, whereas secondary interventions were required with high incidence after initial conservative management. Long-term quality of life, however, returned to normal with any successful treatment strategy.


Asunto(s)
Aneurisma de la Aorta Torácica/cirugía , Disección Aórtica/cirugía , Implantación de Prótesis Vascular , Calidad de Vida , Enfermedad Aguda , Anciano , Disección Aórtica/mortalidad , Disección Aórtica/psicología , Aneurisma de la Aorta Torácica/mortalidad , Aneurisma de la Aorta Torácica/psicología , Implantación de Prótesis Vascular/efectos adversos , Implantación de Prótesis Vascular/mortalidad , Implantación de Prótesis Vascular/psicología , Bases de Datos como Asunto , Femenino , Humanos , Estimación de Kaplan-Meier , Masculino , Persona de Mediana Edad , Evaluación de Procesos y Resultados en Atención de Salud , Reoperación , Medición de Riesgo , Factores de Riesgo , Encuestas y Cuestionarios , Suiza , Factores de Tiempo , Resultado del Tratamiento
18.
Swiss Med Wkly ; 140(15-16): 222-7, 2010 Apr 17.
Artículo en Inglés | MEDLINE | ID: mdl-20131125

RESUMEN

BACKGROUND: On 1 July 2007 a new transplant law came into force in Switzerland. The principal item of this new law is the change from centre-oriented allocation to patient-oriented national allocation of organs. The aim of the present study is to assess the impact on cold ischaemia time (CIT) and transport requirements. METHODS: From 1 July 2006 to 30 June 2008 168 brain-dead donors were registered by Swisstransplant in Switzerland. Donors have been analysed in a retrospective cohort study design. Donor characteristics, transportation requirements and CIT were assessed from the Necroreport. RESULTS: 74 donors (44%) were allocated in the period before the introduction of the new law (period A) and 94 donors (56%) after the new law. Donor characteristics were similar. In period A, 114 organs (37.9%) were allocated within the procurement centre, compared to 54 organs (15.5%) in period B. Transport time for liver and kidney was remarkably longer in period B. Overall, CITs remained largely stable except for a significant increase of nearly 115 minutes in the liver graft median CIT (p <0.01). CONCLUSIONS: The new Swiss transplant law clearly entails an increase in the frequency of organ transports. Overall CIT is not affected. However, liver transplantation is afflicted by an increase in transports and CIT. This may affect mid-term outcome and should therefore be followed closely.


Asunto(s)
Isquemia Fría/tendencias , Asignación de Recursos para la Atención de Salud/legislación & jurisprudencia , Obtención de Tejidos y Órganos/legislación & jurisprudencia , Trasplantes/tendencias , Humanos , Persona de Mediana Edad , Estudios Retrospectivos , Suiza , Obtención de Tejidos y Órganos/estadística & datos numéricos
19.
J Heart Valve Dis ; 18(4): 380-5, 2009 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-19852141

RESUMEN

BACKGROUND AND AIM OF THE STUDY: Combined replacement of the aortic valve and ascending aorta using a composite graft represents the standard treatment for dilated aortic root with concomitant structural damage of the aortic valve, especially when the aortic valve cannot be preserved. Unfortunately, hemodynamic changes associated with prosthetic replacement of the aortic root have not been fully elucidated. The study aim was to compare hemodynamics within the replaced aortic root using either a prosthetic vascular graft with bulges mimicking the sinuses of Valsalva and including a stented pericardial valve, or a straight xenopericardial conduit and a stentless porcine valve. METHODS: Between July 2004 and March 2006, a total of 35 patients (mean age 65.2 years: range: 32-80 years) was enrolled into the present study. Aortic root replacement was performed in nine patients with a Valsalva graft (Gelweave Valsalva; Vascutek, Renfrewshire, UK) including a stented pericardial valve, and in 19 patients with a xenopericardial conduit containing a stentless porcine valve. All patients underwent postoperative magnetic resonance imaging (MRI). A control group of seven patients allowed for comparison with native aortic root hemodynamics. RESULTS: Maximum flow-velocity above the aortic valve as one marker of compliance of the aortic root was slightly higher in patients with a Valsalva graft compared to native aortic roots (1.9 m/s versus 1.3 m/s, p = 0.001), but was significantly lower than in patients with the xenopericardial graft without neo-sinuses (1.3 m/s versus 2.4 m/s, p < 0.001). CONCLUSION: The pre-shaped bulges in the prosthetic Valsalva graft effectively mimic the native sinuses of Valsalva, improve compliance of the aortic root, and result in a more physiologic flow pattern, as demonstrated by postoperative MRI.


Asunto(s)
Aorta/cirugía , Válvula Aórtica/fisiopatología , Válvula Aórtica/cirugía , Implantación de Prótesis Vascular , Implantación de Prótesis de Válvulas Cardíacas , Seno Aórtico/fisiopatología , Adulto , Anciano , Anciano de 80 o más Años , Velocidad del Flujo Sanguíneo , Hemodinámica , Humanos , Imagen por Resonancia Magnética , Persona de Mediana Edad , Técnicas de Sutura
20.
Eur J Cardiothorac Surg ; 35(1): 96-103, 2009 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-18829340

RESUMEN

OBJECTIVES: Endovascular repair of the descending thoracic aorta is a very promising technique in elective and, particularly, emergency situations. This study assessed the impact of urgency of the procedure on outcome and mid-term quality of life in surviving patients. METHODS: Post hoc analysis of prospectively collected data of 58 consecutive patients (January 2001-December 2005) with surgical pathologies of the descending thoracic aorta treated by endovascular means. Six patients were excluded due to recent operations on the ascending aorta before thoracic endovascular repair. The remaining patients (n=52) were 69+/-10 years old, and 43 were men (83%). Twenty-seven had been treated electively, and 25 for emergency indications. Reasons for emergency were acute type B aortic dissections with or without malperfusion syndrome in 14, and aortic ruptures in 11 cases. Follow-up was 29+/-16 months. Endpoints were perioperative and late morbidity and mortality rates and long-term quality of life as assessed by the short form health survey (SF-36) and Hospital Anxiety and Depression Scale questionnaires. RESULTS: Cohorts were comparable regarding age, sex, cardiovascular risk factors, and comorbidities. Perioperative mortality was somewhat higher in emergency cases (12% vs 4%, p=0.34). Paraplegia occurred in one patient in each cohort (4%). Overall quality of life after two and a half years was similar in both treatment cohorts: 72 (58-124) after emergency, and 85 (61-105) after elective endovascular aortic repair (p=0.98). Normal scores range from 85 to 115. Anxiety and depression scores were in the normal range and comparable. CONCLUSIONS: Thoracic endovascular aortic repair is an excellent and safe treatment option for the diseased descending aorta, particularly in emergency situations. Early morbidity and mortality rates can be kept very low. Mid-term quality of life was not affected by the urgency of the procedure. Similarly, mid-term anxiety and depression scores were not increased after emergency situations.


Asunto(s)
Aorta Torácica/cirugía , Enfermedades de la Aorta/cirugía , Implantación de Prótesis Vascular/métodos , Calidad de Vida , Anciano , Disección Aórtica/rehabilitación , Disección Aórtica/cirugía , Aneurisma de la Aorta Torácica/rehabilitación , Aneurisma de la Aorta Torácica/cirugía , Enfermedades de la Aorta/rehabilitación , Rotura de la Aorta/rehabilitación , Rotura de la Aorta/cirugía , Implantación de Prótesis Vascular/efectos adversos , Implantación de Prótesis Vascular/rehabilitación , Urgencias Médicas , Métodos Epidemiológicos , Femenino , Humanos , Masculino , Persona de Mediana Edad , Resultado del Tratamiento
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA