The critical dimension of ethnicity in liver cirrhosis mortality statistics

BACKGROUND: In 1997, liver cirrhosis was the 10th leading cause of death in the United States. Beginning in the 1950s, liver cirrhosis mortality rates have been consistently higher for black than for white men and women. There has been a gradual adoption of the recommendation that all death certificates include information on the Hispanic origin of decedents, with universal adoption in the 1997 data year. It is the purpose of this study to examine the extent to which relative risks for cirrhosis mortality might shift for different demographic groups when Hispanic origin is considered along with the race and sex of the decedent. METHODS: Age-adjusted death rates were calculated for liver cirrhosis by using public-use data files produced by the National Center for Health Statistics. Trends in cirrhosis mortality rates from 1991 through 1997 are shown for white Hispanic, white non-Hispanic, black Hispanic, and black non-Hispanic men and women. RESULTS: In 1997, white Hispanic men show the highest cirrhosis mortality rates over the period examined, followed by black non-Hispanic and white non-Hispanic men, white Hispanic women, and black non-Hispanic and white non-Hispanic women. Among Hispanic decedents, the largest group was of Mexican ancestry, with large numbers being born outside the United States and having low education levels. CONCLUSIONS: The findings of higher risk for cirrhosis mortality among white men and women of Hispanic origin serve to focus new attention on these demographic groups. Collateral analyses of other causes of death do not support alternate explanations of these findings as artifacts of demographic misclassification. Future studies of amounts and patterns of alcohol consumption should include Hispanic origin among demographic factors examined.     

The net transfer of transplant organs across race, sex, age, and income

PURPOSE: To determine how sociodemographic characteristics influence both access to transplantation and organ donation. METHODS: For all transplants in the United States from 1996 to 2001, donor-recipient pairs were categorized as white-white, white-black, black-white, or black-black. The difference in the percentage of white-black versus black-white pairs was calculated as a measure of the net transfer of organs from one racial group to another. A similar approach was used to examine the net transfer of organs across other sociodemographic categories. RESULTS: Among cadaveric renal transplants, 66% of donor-recipient pairs were white-white, 23% were white-black, 5% were black-white, and 6% were black-black. Thus, there was an 18% net transfer of organs from white donors to black recipients (23% minus 5%). Among living donor transplants involving spouses, there was a 36% net transfer from wives to husbands. Among all cadaveric transplants, there was a 36% to 68% net transfer from younger donors to older recipients. Among cadaveric nonrenal transplants, there was a 7% to 18% net transfer from lower-income donors to higher-income recipients. CONCLUSION: The sociodemographic characteristics of persons who donate organs and those who benefit from organ transplantation differ markedly. Efforts to improve access and increase donation should address these differences.     

Adult-to-adult living donor liver transplant: UK experience

BACKGROUND: Adult-to-adult living donor liver transplantation (ALDLT) is being adopted widely in the USA and mainland Europe, fueled by the increasing waiting lists for cadaver organs. The present report describes the first UK experience with the procedure in patients from overseas who have the lowest priority for cadaver organ allocation. METHODS: The 16 patients seen over the period November 1998 to March 2002 had end-stage cirrhosis from chronic hepatitis C virus (HCV) or hepatitis B virus (HBV) infection (13 cases), with single instances of cryptogenic cirrhosis, secondary biliary cirrhosis and alcoholic liver disease. Grafts were left lobe in the first two recipients and right lobe in the subsequent 14 recipients, donated by nine sons/daughters and seven brothers/sisters. RESULTS: Twelve of the 16 recipients did well. The four recipients who died had recurrent sepsis; two of these died following hepatic arterial occlusion, and in three major surgical factors were present before transplantation. Serial computed tomography (CT) measurements in the survivors showed regeneration of the grafted lobe with final volumes reaching in each case the calculated standard liver volume for body size. In the donors, liver function tests had returned to normal by day 7-14, with rapid regeneration of the remaining lobe, although the final size attained that estimated before donation in only four donors. CONCLUSIONS: ALDLT, although requiring considerable facilities and organization, can give good results for both recipient and donor. As with cadaver grafts, outcome in the recipient if the larger right lobe is used is dependent on surgical risk factors and the severity of clinical decompensation before transplantation. Measures to ensure the safety of the donors remain the main concern.     

Racial and ethnic differences in alcohol-associated aspartate aminotransferase and gamma-glutamyltransferase elevation

BACKGROUND: Recent analyses have confirmed that Hispanic and black non-Hispanic Americans are at an increased risk for death from liver cirrhosis. The reasons for this are unknown. As a common cause of cirrhosis, differing sensitivities to alcohol-related hepatocellular injury may play a role. This study compared racial and ethnic aspartate aminotransferase and gamma-glutamyltransferase level elevations within alcohol-drinking categories. METHODS: A cross-sectional analysis of adult subjects from the Third National Health and Nutrition Examination Survey. Logistic regression models were used to estimate the risk for elevation of aspartate aminotransferase and gamma-glutamyltransferase levels among Mexican American and black non-Hispanic subjects compared with white non-Hispanic subjects within categories of alcohol use. Adjustment was made for age, sex, exposure to hepatitis C and B, and body mass index. RESULTS: Among current drinkers, black non-Hispanic and Mexican Americans were more likely to have a 2-fold elevation in aspartate aminotransferase levels when compared with white non-Hispanic Americans. This was most pronounced in the highest-frequency drinkers (Mexican Americans: odds ratio, 9.1 [95% confidence interval, 3.9-21.0]; and black non-Hispanic Americans: odds ratio, 3.1 [95% confidence interval, 1.4-6.8]). No racial and ethnic differences were apparent among current abstainers. A similar pattern was found for 2-fold gamma-glutamyltransferase level elevations. CONCLUSIONS: Among current drinkers, Mexican and black non-Hispanic Americans may have an increased risk for hepatocellular injury. These results require confirmation in other study populations for whom validated measures of quantity and pattern of drinking exist.     

The allocation of organs donated by altruistic strangers

In many transplant centers, organ retrieval from altruistic strangers is accepted practice; patients use Internet Web sites and other public media to locate strangers willing to give them an organ. It is argued that altruistic strangers should be permitted to select the recipients of their organs because 1) personal relationships are morally important; 2) it increases the number of available organs; and 3) no one is hurt by the process. Nonetheless, using public media to obtain organs may undermine equity in organ allocation. Organs donated by altruistic strangers do not go necessarily to patients who have the best immunologic match or the most urgent need or who have waited the longest. A publicly chartered organization should be established to coordinate live organ donation, including donation by altruistic strangers. Altruistic strangers should be educated to allocate their donated organs according to a prudent balance of equity and utility rather than their emotional response to a particular patient's plight, identity, or circumstances.     

Reported condom use and condom use difficulties in street outreach samples of men of four racial and ethnic backgrounds

The epidemiology of the HIV/AIDS epidemic in the United States has focused research attention on lesbian, gay, bisexual and transgendered communities as well as on racial and ethnic minorities. Much of that attention has, however, been focused on specific racial and ethnic groups, and specific sexual minorities. We report on the results of a study that examined the association between condom use and partnership types among men from four major racial/ethnic groups. Self-reported data on sexual identity (homosexual, bisexual, and heterosexual) and condom use in the past three months were collected from 806 African Americans, Hispanic, Asian, and white men intercepted in public places in Houston, TX. Data indicated that condom use was lowest in African Americans and Hispanic men, bisexual men reported the highest levels of use, with heterosexual men reporting the lowest use. African Americans and Hispanic men reported generally that it was very difficult to use a condom during sexual contact, although the patterns for self-identified homosexual, heterosexual, and bisexual men varied across race/ethnicity. Homosexual African American men reported the least difficulty, and white homosexual men the most difficulty compared with heterosexual and bisexual peers. For homosexually identified men, there were considerable differences across race/ethnicity in the proportion of partners who never or rarely disagreed to use condoms, with Asians disagreeing least, and African Americans most. Within racial/ethnic groups, the levels of condom use and difficulty were similar for male and female partners, suggesting that it is sexual identity, rather than partner gender, that has impacted condom-use messages. These data suggest that racial/ethnic targeting of condom use is likely to be most efficacious in increasing condom use in men.     

Acute asthma among adults presenting to the emergency department: the role of race/ethnicity and socioeconomic status

OBJECTIVES: To investigate racial/ethnic differences in acute asthma among adults presenting to the emergency department (ED), and to determine whether observed differences are attributable to socioeconomic status (SES). DESIGN: Prospective cohort studies performed during 1996 to 1998 by the Multicenter Airway Research Collaboration. Using a standardized protocol, researchers provided 24-h coverage for a median duration of 2 weeks per year. Adults with acute asthma were interviewed in the ED and by telephone 2 weeks after hospital discharge. PARTICIPANTS: Sixty-four North American EDs. RESULTS: A total of 1,847 patients were enrolled into the study. Black and Hispanic asthma patients had a history of more hospitalizations than did whites (ever-hospitalized patients: black, 66%; Hispanic, 63%; white, 54%; p < 0.001; patients hospitalized in the past year: black, 31%; Hispanic, 33%; white, 25%; p < 0.05) and more frequent ED use (median use in past year: black, three visits; Hispanic, three visits; white, one visit; p < 0.001). The mean initial peak expiratory flow rate (PEFR) was lower in blacks and Hispanics (black, 47%; Hispanic, 47%; white, 52%; p < 0.001). For most factors, ED management did not differ based on race/ethnicity. After accounting for several confounding variables, blacks and Hispanics were twice as likely to be admitted to the hospital. Blacks and Hispanics also were more likely to report continued severe symptoms 2 weeks after hospital discharge (blacks, 24%; Hispanic, 31%; white, 19%; p < 0.01). After adjusting for sociodemographic factors, the race/ethnicity differences in initial PEFR and posthospital discharge symptoms were markedly reduced. CONCLUSION: Despite significant racial/ethnic differences in chronic asthma severity, initial PEFR at ED presentation, and posthospital discharge outcome, ED management during the index visit was fairly similar for all racial groups. SES appears to account for most of the observed acute asthma differences, although hospital admission rates were higher among black and Hispanic patients after adjustment for confounding factors. Despite asthma treatment advances, race/ethnicity-based deficiencies persist. Health-care providers and policymakers might specifically target the ED as a place to initiate interventions designed to reduce race-based disparities in health.     

Survival after liver transplantation: Is racial disparity inevitable?

Previous analyses have reported that minority patients undergoing orthotopic liver transplantation (OLT) have poorer survival than Caucasian recipients. The reason for this disparity is unclear. We examined whether racial differences in survival exist at select academic OLT centers. OLT recipients from 4 academic centers were prospectively enrolled in 2 multicenter databases. Data including demographics, liver disease diagnosis, and post-OLT follow-up were obtained for 2823 (135 African, 2448 Caucasian, and 240 other race) adult patients undergoing primary OLT between 1985 and 2000. The survival of patients and grafts after OLT was compared across race. The Kaplan-Meier estimates for 1-year recipient survival were 90.8% [95% confidence interval (CI): 86.0-95.9] for African Americans, 86.5% (95% CI: 85.1-87.9) for Caucasians, and 84.4% (95% CI: 79.8-89.2) for other races. The 5-year recipient survival probability was 69.2% (95% CI: 60.1-79.7) for African Americans, 72.2% (95% CI: 70.1-74.4) for Caucasians, and 67.5% (95% CI: 60.5-75.3) for other races. The 10-year recipient survival probability for African Americans was 54.4% (95% CI: 41.1-72.1), for Caucasians 50.7% (95% CI: 46.4-55.3), and for other races 55.7% (95% CI: 41.5-74.8). There was no difference in patient survival (P = 0.162) or graft survival (P = 0.582) among racial groups. A multivariable proportional hazards model confirmed the absence of an association between race and post-OLT survival after adjustments for age, gender, total bilirubin, creatinine, prothrombin time, and diagnosis. CONCLUSION: These data demonstrate that as a proof of principle, minority OLT recipients should not necessarily expect an OLT outcome inferior to that of Caucasians.     

The closing survival gap after liver transplantation for hepatocellular carcinoma in the United States

BackgroundSocio-economic inequalities among different racial/ethnic groups have increased in many high-income countries. It is unclear, however, whether increasing socio-economic inequalities are associated with increasing differences in survival in liver transplant (LT) recipients.MethodsAdults undergoing first time LT for hepatocellular carcinoma (HCC) between 2002 and 2017 recorded in the Scientific Registry of Transplant Recipients (SRTR) were included and grouped into three cohorts. Patient survival and graft survival stratified by race/ethnicity were compared among the cohorts using unadjusted and adjusted analyses.ResultsWhite/Caucasians comprised the largest group (n=9,006, 64.9%), followed by Hispanic/Latinos (n=2,018, 14.5%), Black/African Americans (n=1,379, 9.9%), Asians (n=1,265, 9.1%) and other ethnic/racial groups (n=188, 1.3%). Compared to Cohort I (2002-2007), the 5-year survival of Cohort III (2012-2017) increased by 18% for Black/African Americans, by 13% for Whites/Caucasians, by 10% for Hispanic/Latinos, by 9% for patients of other racial/ethnic groups and by 8% for Asians (All P values<0.05). Despite Black/African Americans experienced the highest survival improvement, their overall outcomes remained significantly lower than other ethnic∕racial groups (adjusted HR for death=1.20; 95%CI 1.05-1.36; P=0.005; adjusted HR for graft loss=1.21; 95%CI 1.08-1.37; P=0.002).ConclusionThe survival gap between Black/African Americans and other ethnic/racial groups undergoing LT for HCC has significantly decreased over time. However, Black/African Americans continue to have the lowest survival among all racial/ethnic groups.     

Personnel in cadaveric organ transplant-related hospital units faced with living liver donation: an attitudinal study in a Spanish hospital with a cadaveric and living liver transplant programme.

INTRODUCTION: The attitude of health-care personnel is fundamental for the procurement of transplant organs, especially in those services that are related to transplantation. The objective of this study is to find out the attitude towards living liver donation among personnel who work in transplant-related services in a hospital with a cadaveric and living organ transplant programme. MATERIALS AND METHODS: A random sample was taken and stratified by type of service and job category (N=330), in services related to transplantation (procurement units, transplant units and follow-up units). Attitude was evaluated using a validated psychosocial questionnaire. Control group: a random sample of personnel in clinical services that do not have any direct contact with solid organ transplantation. Student's t-test and the chi(2) test complemented by a logistical regression analysis were applied in the statistical analysis. RESULTS: The questionnaire completion rate was 94% (N=309). Only 10% (N=31) of respondents are in favour of living liver donation if it is unrelated, but another 67% (N=207) are in favour if donation were for a relative. Of the rest, 11% (N=33) do not agree with living liver donation and the remaining 12% (N=38) are undecided. In the control group, attitude towards living liver donation is favourable in 82% (N=344) (P=0.0908). An analysis of the variables that influence attitude shows that the following factors are significantly related: (1) age (P=0.037); (2) a respondent's belief that he or she may need a transplant in the future (P=0.013); and (3) if it were necessary, a willingness to receive a donated living liver organ (P=0.000). Of the variables that have the most influence on attitude towards living liver donation in the bivariate analysis, there are two variables that are statistically significant in the multivariate analysis: (1) age and (2) willingness to accept a donated living liver organ from a relative if it were needed (OR=14.19). There is also a close relationship between attitude towards living liver donation and attitude towards living kidney donation (P=0.000) CONCLUSIONS: There is a favourable attitude towards living liver donation among personnel in units related to the transplantation and donation process, although it is less favourable than expected. Therefore, it will be necessary to increase this level of acceptance and to improve information about the matter if we want to encourage living liver donation. The youngest workers in these units are those who are most in favour, which leads us to believe that there is a hopeful future for this type of liver donation that is so necessary given the cadaveric organ deficit.     

HIV Prevalence Rates Among Men Who Have Sex with Men in the Southern United States: Population-Based Estimates by Race/Ethnicity

States across the U.S. lack effective ways to quantify HIV prevalence rates among men who have sex with men (MSM). We estimated population-based HIV prevalence rates among MSM in the 17 southern states by race/ethnicity. Through 2007, estimated HIV prevalence rates per 100,000 MSM ranged from 2,607.6 among white (non-Hispanic) MSM in Maryland to 41,512.9 among black (non-Hispanic) MSM in the District of Columbia. Black MSM rates significantly exceeded Hispanic and white MSM rates in each state. Significant racial/ethnic disparities in rates persisted in a sensitivity analysis examining the possibility that minority MSM populations had been underestimated in each state. Compared with black, Hispanic, and white non-MSM males, respectively, rates at the regional level were 25.2 times higher for black MSM, 43.0 times higher for Hispanic MSM, and 106.0 times higher for white MSM. State-level analysis of racial/ethnic-specific MSM HIV prevalence rates can help guide resource allocation and assist advocacy.     

Exploring pathways to improve indigenous organ donation

Australia has one of the worst organ donation rates in the western world. The consequence of this is that the waiting list for life-saving transplants is increasing. Australia has a highly successful transplant programme, but a limited number of organs are donated. Unfortunately, Aboriginal people are over-represented in the organ-failure patient group – particularly in end-stage renal disease. Renal transplantation has the potential to improve quantity and quality of life for Aboriginal people with renal failure. Aboriginal people have a right to be given the same opportunities as non-indigenous people to donate their organs at the end of life and improve the transplantation rates among their own people. The most effective way to improve indigenous donation rates will be through improving the knowledge of Aboriginal people about organ donation. There are cultural complexities and end-of-life rituals that make the decision to donate organs difficult, but these issues do not preclude a family from making the decision to donate organs at the end of life. We need to provide Aboriginal communities with appropriately presented information to give them a basis for making an informed decision about organ donation. Equity of access is important. Cultural competence of requestors is important. Consultation, communication and education are the way forward.     

Evaluation of the Opinions and Knowledge of Medical School Students on Organ Donation and Transplantation

Background: Insufficient organ donation is one of the most significant current problems in medical care. The students of the faculty of medicine could be the strongest supporters of organ donation and transplantation, and may play an important role in increasing organ donation. This study aimed to determine the relevant educational needs of the medical students by evaluating their knowledge and opinions about organ donation and transplantation, according to their grade levels.Methods: A cross-sectional study was conducted among 395 (83.6%) students in the first, third, and sixth grades of the faculty of medicine. A questionnaire consisting of 42 questions was used to measure their opinions and knowledge about organ transplantation.Results: Among the students who responded, 6.8% (n = 27) had donated their organs and 81.4% of the donors had donation cards, while 73.4% (n = 290) were considering organ donation. The percentages of women and students at the grade six level considering organ donation were significantly higher (P < .05). The study revealed that 38.7% of the students did not have enough knowledge about organ donation, 47.8% stated that they had some knowledge and 61.8% of the students did not know the principles of brain death. The students of all grades reported that most of the information about organ donation and transplantation was obtained from their family and friends.Conclusion: As medical students progress through the grade levels, their perceptions and knowledge of organ donation and transplantation also increase positively. Courses on organ donation and transplantation can be added to the curriculum from the very first year of medical education.     

体外膜肺氧合技术对脑心双死亡器官捐献供肝的保护作用

目的探讨体外膜肺氧合(ECMO)技术在公民逝世器官捐献供肝保护中的应用,总结ECMO技术保护供肝的初步体会及经验。方法收集江西省人民医院2015年1月-2018年12月运用ECMO技术完成脑心双死亡器官捐献(DBCD)肝移植供者/受者及常规DBCD肝移植供者/受者的临床资料,对供肝的保护及移植效果进行对比分析。计量资料两组间比较采用t检验;计数资料两组间比较采用χ2检验。结果共纳入一般情况及肝功能接近的供者32例,根据采用的方法将其分为对照组(常规DBCD肝移植)和研究组(运用ECMO技术完成DBCD肝移植),每组各16例;32例肝移植受者分为对应的对照组(n=16)和研究组(n=16)。器官获取前供者对照组与供者研究组比较,心率、收缩压、舒张压、血氧分压、乳酸水平、中心静脉压、TBil、ALT、AST差异均有统计学意义(t值分别为14.121、-17.817、-19.187、-8.927、4.559、-3.495、3.357、4.111、3.553,P值均<0.05)。与受者对照组术后第7天肝功能相比,受者研究组肝移植术后肝功能恢复速度更快,两组TBil、DBil、ALT、AST、ALP、GGT比较,差异均有统计学意义(t值分别为9.309、4.783、5.067、2.203、4.774、5.257,P值均<0.05);受者研究组患者住院时间明显缩短[(12.65±2.86)d vs(20.87±4.98)d,t=5.756,P<0.001]。结论运用ECMO技术获取并实施肝移植临床效果较好,科学合理运用ECMO技术可以有效改善供肝质量,对我国公民逝世器官捐献工作有着积极的作用。     

Racial disparities in utilization of liver transplantation for hepatocellular carcinoma in the United States, 1998-2002

BACKGROUND AND AIMS: The extent of use of liver transplantation on a population scale to treat hepatocellular carcinoma (HCC) in the United States is unknown. We assessed recent predictors of use of liver transplantation and its effect on survival for those with nonmetastatic HCC. METHODS: The Surveillance, Epidemiology, and End Results (SEER) program is a collection of population-based cancer registries. We identified adults registered in SEER with HCC between 1998 and 2002. We examined determinants for receipt of a liver transplant in univariate and multivariable analyses. Kaplan-Meier survival curves were constructed for those who received and did not receive a transplant for HCC. RESULTS: We identified 1,156 adults with small (5 cm or less) nonmetastatic HCC. Approximately 45% were white, 29% Asian, 17% Hispanic, and 9% African American. Only 21% received a transplant. More recent year of diagnosis, younger age, being married, white race, and smaller tumor size each predicted receipt of transplant. African Americans and Asians were about half as likely to receive a transplant as compared with white patients (odds ratio [OR] 0.43, 95% confidence interval [CI] 0.21-0.90 for African Americans, and 0.57, 95% CI 0.36-0.89 for Asians). Hispanics trended in the same direction, but this was not statistically significant (OR 0.66, 95% CI 0.39-1.12). Those who underwent liver transplantation for localized HCC had 3- and 5-yr survivals of 81% and 75%, respectively. CONCLUSIONS: Only one-fifth of those with small, nonmetastatic HCC received liver transplantation. Transplanted patients have long-term survival similar to that of the best single-institution studies. However, marked racial variations were seen, with African Americans and Asians significantly less likely to receive a transplant after controlling for other variables.     

Treatment of hepatitis C in potential kidney and heart transplant patients

Hepatitis C virus (HCV) is common in certain solid organ transplant recipients, most notably in those undergoing liver or kidney transplantation. Infection typically antedates transplantation but may have been acquired at the time of transplantation via infected blood products or organs. A more rapid and aggressive course of HCV-related infection and liver disease is the major concern in organ transplant recipients compared with immunocompetent patients. HCV-related liver disease is an important cause of morbidity and mortality in patients with end-stage renal disease treated by dialysis or transplantation. The outcome of HCV infection in renal and liver transplant recipients has been extensively investigated, whereas literature on HCV-related liver disease among patients with orthotopic heart transplantation is scanty. This article reviews the literature concerning the treatment of HCV-related liver disease in renal and orthotopic heart transplantation.     

Current status of liver transplantation in Korea]

Orthotopic liver transplantation (OLT) is now considered as a standard procedure for patients with end-stage liver disease. The number of patients listed for OLT using the brain-dead donor continues to outpace the number of OLT performed since early 1990s because the improved results of OLT had made it as a therapeutic means for irreversible liver disease. This scarcity of organs from the deceased donors has resulted in the increased use of the living donor liver grafts. Although the shortage of the brain-dead donor organs is a world-wide problem, the situation is especially serious in our country, where the deceased donor organ donation remains below 2 per million population per year. Now, Korea has the greatest need for living donor liver transplantation although it is more complex and demanding procedure than the deceased donor (whole organ) liver transplantation. Refinements of the technique and good results have rapidly established the position of the living donor liver transplantation in our country's transplant medicine. 2,345 OLTs (1,860 from the living donor and 485 from the deceased donor) were performed in 24 institutes from March 1988 to December 2004, although 5 institutes had performed more than 10 OLTs per year. Definitely, living donors represent a large pool of organs, but there might be a significant cost, mainly donor risk, to draw from this pool. To alleviate some disadvantages of the living donor liver transplantation and to provide organ to the patients who cannot find out the potential living donor from family members, recognition of necessity and nation-wide cooperative participation of organ donation after the brain-death should be propagated and encouraged in our country.     

Extreme variations in racial rates of total hip arthroplasty for primary coxarthrosis: a population-based study in San Francisco.

OBJECTIVES--To compare the incidence of all total hip arthroplasty, and total hip arthroplasty for primary coxarthrosis, among the Asian, black, Hispanic, and white populations living in one locale. METHODS--We identified all San Francisco residents who underwent total hip replacements (THR) in the 17 hospitals for adults within or near San Francisco County during a five year period. Preoperative pelvic radiographs were read without prior knowledge of the gender or race of the subject, to diagnose the specific hip diseases. Age standardised THR incidence by race and gender was determined, as was the comparative THR incidence for specific diagnosis (primary and secondary osteoarthritis). RESULTS--The greatest annual rate of total hip replacement occurred in white women (97 per 100,000 population), followed by white men, black women, black men, Hispanic women, and Hispanic men. The smallest numbers were found in Asians, whose THR rate was 10% that of whites. A primary coxarthrosis diagnosis was greatest among white subjects (66%), followed by black subjects (54%), Hispanics (53%), and Asians (28%). Age standardised THR rates for primary coxarthrosis per 100,000 population were likewise greatest among whites (43.0) and least among Asians (1.3 for Chinese). Mean age of patients undergoing THR for primary coxarthrosis was 70 years for white subjects and almost a decade younger in all other groups. CONCLUSIONS--THR rates are much lower for Asians, Hispanics, and black subjects than for the white population living in San Francisco. The low rates of total hip arthroplasty in the non-white groups was related to the much lower incidence of THR for primary coxarthrosis among non-whites than among whites. The racial distribution of primary coxarthrosis among patients who underwent THR is consistent with distribution patterns reported internationally.     

Racial and ethnic differences in survival of children with acute lymphoblastic leukemia

Black children with acute lymphoblastic leukemia (ALL) have poor outcomes, but limited information is available for children from other racial and ethnic backgrounds, such as Hispanic and Asian. We undertook a retrospective cohort study of children with ALL treated on Children's Cancer Group therapeutic protocols to determine outcomes by racial and ethnic backgrounds of patients treated with contemporary risk-based therapy. In total, 8447 children (white, n = 6703; Hispanic, n = 1071; black, n = 506; and Asian, n = 167) with newly diagnosed ALL between 1983 and 1995 were observed for a median of 6.5 years. Analysis of disease outcome was measured as overall survival (OS) and event-free survival (EFS) and was adjusted for known predictors of outcome including clinical features, disease biology, socioeconomic status, and treatment era (1983-1989 vs 1989-1995). There was a statistically significant difference in survival by ethnicity (P <.001). Five-year EFS rates were: Asian, 75.1% +/- 3.5%; white, 72.8% +/- 0.6%; Hispanic, 65.9% +/- 1.5%; and black, 61.5% +/- 2.2%. Multivariate analysis revealed that when compared with white children, black and Hispanic children had worse outcomes and Asian children had better outcomes after adjusting for known risk factors. The poorer outcomes among black children were most apparent among patients with standard-risk features (relative risk [RR], 2.0; 95% confidence interval [CI], 1.6-2.5), whereas poorer outcomes in Hispanic children (RR, 1.4; 95% CI, 1.2-1.6) were most evident among patients with high-risk features. Asian children had better outcomes than all racial and ethnic groups among high-risk patients, particularly in the recent era (5-year EFS, 90.9% +/- 6.1%). Racial and ethnic differences in OS and EFS persist among children with ALL who receive contemporary risk-based therapy. Future studies should focus on reasons-perhaps compliance or pharmacogenetics-for those differences.     

Donation after cardio-circulatory death liver transplantation

The renewed interest in donation after cardio-circulatory death (DCD) started in the 1990s following the limited success of the transplant community to expand the donation after brain-death (DBD) organ supply and following the request of potential DCD families. Since then, DCD organ procurement and transplantation activities have rapidly expanded, particularly for non-vital organs, like kidneys. In liver transplantation (LT), DCD donors are a valuable organ source that helps to decrease the mortality rate on the waiting lists and to increase the availability of organs for transplantation despite a higher risk of early graft dysfunction, more frequent vascular and ischemia-type biliary lesions, higher rates of re-listing and re-transplantation and lower graft survival, which are obviously due to the inevitable warm ischemia occurring during the declaration of death and organ retrieval process. Experimental strategies intervening in both donors and recipients at different phases of the transplantation process have focused on the attenuation of ischemia-reperfusion injury and already gained encouraging results, and some of them have found their way from pre-clinical success into clinical reality. The future of DCD-LT is promising. Concerted efforts should concentrate on the identification of suitable donors (probably Maastricht category III DCD donors), better donor and recipient matching (high risk donors to low risk recipients), use of advanced organ preservation techniques (oxygenated hypothermic machine perfusion, normothermic machine perfusion, venous systemic oxygen persufflation), and pharmacological modulation (probably a multi-factorial biologic modulation strategy) so that DCD liver allografts could be safely utilized and attain equivalent results as DBD-LT.