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AHRQ Research Studies
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Research Studies is a compilation of published research articles funded by AHRQ or authored by AHRQ researchers.
Results
1 to 10 of 10 Research Studies DisplayedMontgomery JR, Waits SA, Dimick JB
Risks of bariatric surgery among patients with end-stage renal disease.
Pretransplant morbid obesity among patients with end-stage renal disease (ESRD) is a significant predictor of delayed access to transplant and inferior posttransplant patient and kidney allograft outcomes. In this study, the authors performed an analysis of perioperative safety of bariatric surgery in obese patients with ESRD using a national registry capturing greater than 95% of bariatric operations.
AHRQ-funded; HS025778.
Citation: Montgomery JR, Waits SA, Dimick JB .
Risks of bariatric surgery among patients with end-stage renal disease.
JAMA Surg 2019 Dec;154(12):1160-62. doi: 10.1001/jamasurg.2019.2824..
Keywords: Surgery, Obesity, Obesity: Weight Management, Kidney Disease and Health, Transplantation, Risk, Chronic Conditions
Purnell TS, Luo X, Crews DC
Neighborhood poverty and sex differences in live donor kidney transplant outcomes in the United States.
Neighborhood poverty has been associated with worse outcomes after live donor kidney transplantation (LDKT), and prior work suggests that women with kidney disease may be more susceptible to the negative influence of poverty than men. As such, our goal was to examine whether poverty differentially affects women in influencing LDKT outcomes. The investigators concluded that given their findings that poverty was more strongly associated with graft loss in women, targeted efforts are needed to specifically address mechanisms driving these disparities in LDKT outcomes.
AHRQ-funded; HS024600.
Citation: Purnell TS, Luo X, Crews DC .
Neighborhood poverty and sex differences in live donor kidney transplant outcomes in the United States.
Transplantation 2019 Oct;103(10):2183-89. doi: 10.1097/tp.0000000000002654.
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Keywords: Transplantation, Kidney Disease and Health, Patient-Centered Outcomes Research, Disparities, Women, Sex Factors, Low-Income, Outcomes
Stepkowski SM, Mierzejewska B, Fumo D
The 6-year clinical outcomes for patients registered in a multiregional United States Kidney Paired Donation program - a retrospective study.
This retrospective study examined 6-year clinical outcomes for patients registered in a multiregional US Kidney Paired Donation (KPF) program. A total of 1121 end-stage renal disease patients who registered with their willing/incompatible living donors for kidney exchange were followed. Out of the 1121, 65% were transplanted with 37% of them in kidney paired donations, 10% with compatible live donors, and 18% with deceased donors. The remaining patients withdrew due to illness or death, or were still waiting (20%). There were similar survival rates with the different donor methods.
AHRQ-funded; HS020610.
Citation: Stepkowski SM, Mierzejewska B, Fumo D .
The 6-year clinical outcomes for patients registered in a multiregional United States Kidney Paired Donation program - a retrospective study.
Transpl Int 2019 Aug;32(8):839-53. doi: 10.1111/tri.13423..
Keywords: Kidney Disease and Health, Mortality, Outcomes, Transplantation
Yanik MV, Seifert ME MV, Seifert ME, Locke JE
CYP3A5 genotype affects time to therapeutic tacrolimus level in pediatric kidney transplant recipients.
Optimal management of immunosuppression in kidney transplantation requires a delicate balance of efficacy and toxicity. Tacrolimus (TAC) dose requirements are significantly impacted by genetic variation in CYP3A5 polymorphisms, however the impact that genotype has on clinical outcomes in the pediatric kidney transplant population remains unclear. In this study, the investigators evaluated a retrospective cohort of 98 pediatric kidney transplant recipients. In this paper, they report on their findings.
AHRQ-funded; HS013852.
Citation: Yanik MV, Seifert ME MV, Seifert ME, Locke JE .
CYP3A5 genotype affects time to therapeutic tacrolimus level in pediatric kidney transplant recipients.
Pediatr Transplant 2019 Aug;23(5):e13494. doi: 10.1111/petr.13494..
Keywords: Children/Adolescents, Transplantation, Kidney Disease and Health, Genetics
Chang SH, Wang M, Liu X
Racial/ethnic disparities in access and outcomes of simultaneous liver-kidney transplant among liver transplant candidates with renal dysfunction in the United States.
Since the Model for End-stage Liver Disease (MELD) allocation system was implemented, the proportion of simultaneous liver-kidney transplantation (SLKT) has increased significantly. The investigators study whether racial/ethnic disparities exist in access to SLKT and post-SLKT survival. The investigators concluded that in the MELD era, racial/ethnic differences exist in access and survival of SLKT for patients with renal dysfunction at listing for LT.
AHRQ-funded; HS022330.
Citation: Chang SH, Wang M, Liu X .
Racial/ethnic disparities in access and outcomes of simultaneous liver-kidney transplant among liver transplant candidates with renal dysfunction in the United States.
Transplantation 2019 Aug;103(8):1663-74. doi: 10.1097/tp.0000000000002574..
Keywords: Access to Care, Disparities, Kidney Disease and Health, Outcomes, Policy, Transplantation
Hart A, Gustafson SK, Wey A
The association between loss of Medicare, immunosuppressive medication use, and kidney transplant outcomes.
The purpose of this study was to determine the association between the timing of Medicare loss and immunosuppressive medication fills and kidney allograft loss. Findings indicated that the medication possession ratio (MPR) was lower for recipients with early or late Medicare loss compared with no coverage loss for all immunosuppressive medication types. When recipients were matched by age, posttransplant timing of Medicare loss, and donor risk, the hazard of allograft loss was significantly higher after Medicare loss, with no difference in the hazard for on-time Medicare loss.
AHRQ-funded; HS024527.
Citation: Hart A, Gustafson SK, Wey A .
The association between loss of Medicare, immunosuppressive medication use, and kidney transplant outcomes.
Am J Transplant 2019 Jul;19(7):1964-71. doi: 10.1111/ajt.15293..
Keywords: Kidney Disease and Health, Medicare, Medication, Outcomes, Patient-Centered Outcomes Research, Transplantation
Kilambi V, Bui K, Hazen GB
Evaluation of accepting kidneys of varying quality for transplantation or expedited placement with decision trees.
This article introduces a decision-tree methodology that analyzes a patient's dilemma: to accept a kidney offer now or reject it. The methodology calculates the survival benefit of accepting a kidney given a certain quality now and the survival benefit of rejecting it. The decision-tree tool presented could aid personalized transplant decision-making in the future by providing patients with calculated, individualized survival benefits between accepting and rejecting a kidney offer.
AHRQ-funded; HS024840.
Citation: Kilambi V, Bui K, Hazen GB .
Evaluation of accepting kidneys of varying quality for transplantation or expedited placement with decision trees.
Transplantation 2019 May;103(5):980-89. doi: 10.1097/tp.0000000000002585..
Keywords: Transplantation, Kidney Disease and Health, Shared Decision Making
Warsame F, Haugen CE, Ying H
Limited health literacy and adverse outcomes among kidney transplant candidates.
More than one-third of US adults have limited health literacy, putting them at risk of adverse clinical outcomes. In this study the investigators evaluated the prevalence of limited health literacy among 1578 adult kidney transplant (KT) candidates (May 2014-November 2017) and examined its association with listing for transplant and waitlist mortality in this pilot study. The investigators concluded that limited health literacy may be a salient mechanism in access to KT; programs to aid candidates with limited health literacy may improve outcomes and reduce disparities.
AHRQ-funded; HS024600.
Citation: Warsame F, Haugen CE, Ying H .
Limited health literacy and adverse outcomes among kidney transplant candidates.
Am J Transplant 2019 Feb;19(2):457-65. doi: 10.1111/ajt.14994..
Keywords: Health Literacy, Transplantation, Adverse Events, Patient-Centered Outcomes Research, Outcomes, Surgery, Mortality, Kidney Disease and Health
Dunn T, Saeed MJ, Shpigel A
The association of preoperative cardiac stress testing with 30-day death and myocardial infarction among patients undergoing kidney transplantation.
This study examined whether the use of preoperative cardiac stress testing of patients undergoing kidney transplantation reduced 30-day- death and myocardial infarction post-transplantation. ESRD patients 40 years or older with primary Medicare insurance between 2006 and 2013 were identified using the United States Renal Data System. In a matched cohort of 17,304 patients, there was little difference in 30-day post-transplantation mortality and myocardial infarction between those receiving a stress test and those who did not.
AHRQ-funded; HS019455.
Citation: Dunn T, Saeed MJ, Shpigel A .
The association of preoperative cardiac stress testing with 30-day death and myocardial infarction among patients undergoing kidney transplantation.
PLoS One 2019 Feb;14(2):e0211161. doi: 10.1371/journal.pone.0211161..
Keywords: Transplantation, Kidney Disease and Health, Heart Disease and Health, Cardiovascular Conditions, Chronic Conditions, Risk, Surgery
Novogrodsky E, Yaghoubian A, Connor SE
The role of media in non-directed (altruistic) living kidney donation.
This study sought to characterize how non-directed living kidney donors use media and informational resources over the course of their kidney donation journey. The investigators conducted semi-structured interviews with non-directed donors (NDDs) who initiated kidney transplant chains. The investigators concluded that media and informational resources play an important role in the process of donation for NDDs, including inspiring interest in donation through personal narratives.
AHRQ-funded; HS000029.
Citation: Novogrodsky E, Yaghoubian A, Connor SE .
The role of media in non-directed (altruistic) living kidney donation.
Health Commun 2019 Feb;34(2):259-67. doi: 10.1080/10410236.2017.1405480..
Keywords: Kidney Disease and Health, Transplantation, Shared Decision Making, Communication, Education: Patient and Caregiver