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  • Gao S
  • Huang X
  • Zhou X
  • Dai X
  • Han J
  • et al.
Ann Med. 2024 Dec;56(1):2314236 doi: 10.1080/07853890.2024.2314236.
BACKGROUND:

The burden of carbapenem-resistant gram-negative bacteria (CRGNB) among solid organ transplant (SOT) recipients has not been systematically explored. Here, we discern the risk factors associated with CRGNB infection and colonization in SOT recipients.

METHODS:

This study included observational studies conducted among CRGNB-infected SOT patients, which reported risk factors associated with mortality, infection or colonization. Relevant records will be searched in PubMed, Embase and Web of Science for the period from the time of database construction to 1 March 2023.

RESULTS:

A total of 23 studies with 13,511 participants were included, enabling the assessment of 27 potential risk factors. The pooled prevalence of 1-year mortality among SOT recipients with CRGNB was 44.5%. Prolonged mechanical ventilation, combined transplantation, reoperation and pre-transplantation CRGNB colonization are salient contributors to the occurrence of CRGNB infections in SOT recipients. Renal replacement therapy, post-LT CRGNB colonization, pre-LT liver disease and model for end-stage liver disease score increased the risk of infection. Re-transplantation, carbapenem use before transplantation and ureteral stent utilization increaesd risk of CRGNB colonization.

CONCLUSION:

Our study demonstrated that SOT recipients with CRGNB infections had a higher mortality risk. Invasive procedure may be the main factor contribute to CRGNB infection.

  • Jiang W
  • Xu Y
  • Yin Q
Ren Fail. 2024 Dec;46(1):2296000 doi: 10.1080/0886022X.2023.2296000.

To explore the effect of lupus nephritis (LN) on graft survival in renal transplant patients. Literature search was conducted in PubMed, EMBASE and Scopus database for randomized controlled trials (RCTs), cohort, and case-control studies. The target population of interest was adult patients (aged >18 years) with end-stage renal disease (ESRD) and no history of previous renal transplants. Primary outcomes of interest were graft survival and patient survival. Pooled effect estimates were calculated using random-effects models and reported as hazard ratio (HR) with 95% confidence intervals (CI). A total of 15 studies were included. Compared to patients with ESRD due to other causes, patients with LN undergoing kidney transplant had lower patient survival rate (HR 1.15, 95% CI: 1.01, 1.31; N = 15, I2=34.3%) and worse graft survival (HR 1.06, 95% CI: 1.01, 1.11; N = 16, I2=0.0%), especially when studies with deceased donor were pooled together. Studies with a larger sample size (>200) showed that LN was strongly associated with lower graft and patient survival rates. Elevated risk of mortality in LN patients was detected in case-control studies, but not RCTs. On the other hand, RCTs, but not case-control studies, showed an increased risk of poor graft survival in LN patients. The findings suggest that the presence of LN might have a negative impact on both the graft survival and the overall patient survival of post-transplant ESRD patients. Further studies that account for factors such as study methodology, donor characteristics, and sample size are needed to reach definitive conclusions. Renal transplant patients with LN should undergo regular follow-up examinations.

  • Vidnes TK
  • Wahl AK
  • Larsen MH
  • Meyer KB
  • Engebretsen E
  • et al.
Patient Educ Couns. 2024 Jun;123:108207 doi: 10.1016/j.pec.2024.108207.
OBJECTIVE:

This study aimed to evaluate the effect of a new health communication intervention focusing on knowledge management skills on health literacy and medication adherence during the first year following kidney transplantation.

METHODS:

We randomized 195 patients during 2020-2021, to either intervention- or control group. Questionnaires were completed at baseline and at 12 months post-transplantation with a 12-month response rate of 84%. Health literacy was measured by the multidimensional Health Literacy Questionnaire (HLQ) instrument. Medication adherence was measured by the self-reported questionnaire (BAASIS©).

RESULTS:

Results showed that the intervention group had a significant increase in 2 HLQ domains compared to the control group capturing the "ability to appraise health information" Domain 5, (p-value = 0.002) and the "ability to navigate the healthcare system" Domain 7, (p-value <0.04). The effect sizes of SRM were 0.49 (Domain 5) and 0.33 (Domain 7). Medication adherence was comparable in the groups at any measure points.

CONCLUSIONS:

This study contributes to important knowledge about how a health communication intervention focusing on knowledge translation using motivational interviewing techniques positively strengthens health literacy in kidney transplant recipients.

PRACTICAL IMPLICATIONS:

Current patient education practice may benefit from focusing on knowledge translation in combination with motivational interview technique.

  • Stier EA
  • Clarke MA
  • Deshmukh AA
  • Wentzensen N
  • Liu Y
  • et al.
Int J Cancer. 2024 May 15;154(10):1694-1702 doi: 10.1002/ijc.34850.

The International Anal Neoplasia Society (IANS) developed consensus guidelines to inform anal cancer screening use among various high-risk groups. Anal cancer incidence estimates by age among risk groups provided the basis to identify risk thresholds to recommend screening. Guided by risk thresholds, screening initiation at age 35 years was recommended for men who have sex with men (MSM) and transgender women (TW) with HIV. For other people with HIV and MSM and TW not with HIV, screening initiation at age 45 years was recommended. For solid organ transplant recipients, screening initiation beginning from 10 years post-transplant was recommended. For persons with a history of vulvar precancer or cancer, screening initiation was recommended starting within 1 year of diagnosis of vulvar precancer or cancer. Persons aged ≥45 years with a history of cervical/vaginal HSIL or cancer, perianal warts, persistent (>1 year) cervical HPV16, or autoimmune conditions could be considered for screening with shared decision-making, provided there is adequate capacity to perform diagnostic procedures (high-resolution anoscopy [HRA]). Anal cytology, high-risk (hr) human papillomavirus (HPV) testing (including genotyping for HPV16), and hrHPV-cytology co-testing are different strategies currently used for anal cancer screening that show acceptable performance. Thresholds for referral for HRA or follow-up screening tests are delineated. These recommendations from IANS provide the basis to inform management of abnormal screening results, considering currently available screening tools. These guidelines provide a pivotal foundation to help generate consensus among providers and inform the introduction and implementation of risk-targeted screening for anal cancer prevention.

  • Natale P
  • Palmer SC
  • Jaure A
  • Saglimbene V
  • Iannone A
  • et al.
J Hypertens. 2024 May 1;42(5):848-855 doi: 10.1097/HJH.0000000000003663.
CET Conclusion
Reviewer: Reshma Rana Magar, Centre for Evidence in Transplantation, Nuffield Department of Surgical Sciences University of Oxford
Conclusion: The aim of this systematic review was to examine the role of blood pressure lowering agents in transplant patients with a functioning kidney allograft. A large number of studies were included (94 studies), including a total of 7547 adults, all of which were randomised controlled studies. The authors found that none of the blood pressure-lowering agents reduced the risk of graft loss nor did they show significant differences in terms of all-cause death, cardiovascular death and withdrawal because of adverse events, in comparison to placebo or other drug class. Although only RCTs were included, some of them were of poor quality and/or were publish over 20 years ago—these factors may have influenced the certainty of the findings. This study also highlights the insufficient reporting of data on important variables such as donor type (living versus deceased), time after transplantation and quality of life, which may have restricted the authors from performing a more granular analyses of the outcomes. Hence, the authors concluded that the evidence basis for this topic is poor that cannot be used to inform clinical decision-making.
Aims: This study aimed to assess the benefits and harms associated with blood pressure lowering agents in renal transplant recipients with a functioning graft.
Interventions: Three electronic databases including MEDLINE, Embase, and the Cochrane Central Register of Controlled Trials (CENTRAL) were searched. Two reviewers independently selected studies for inclusion and extracted data. The Cochrane Risk of Bias Tool was used to assess the risk of bias.
Participants: 94 studies were included in the review.
Outcomes: The primary effectiveness outcome was graft loss, and safety outcome was withdrawal due to adverse events. The secondary outcomes were death (all-cause and cardiovascular), cardiovascular disease, acute rejection, acute kidney injury, acute dialysis, estimated glomerular filtration rate (eGFR), creatinine clearance, systolic blood pressure (SBP) and diastolic blood pressure (DBP), mean arterial pressure (MAP), adverse events and quality of life.
Follow Up: N/A
OBJECTIVE:

Hypertension affects 50-90% of kidney transplant recipients and is associated with cardiovascular disease and graft loss. We aimed to evaluate the comparative benefits and harms of blood pressure lowering agents in people with a functioning kidney transplant.

METHODS:

We conducted a systematic review with network meta-analysis of randomized controlled trials (RCTs). We searched MEDLINE, Embase, and CENTRAL through to October 2023. RCTs evaluating blood pressure lowering agents administered for at least 2 weeks in people with a functioning kidney transplant with and without preexisting hypertension were eligible. Two reviewers independently extracted data. The primary outcome was graft loss. Treatment effects were estimated using random effects network meta-analysis, with treatment effects expressed as an odds ratio (OR) for binary outcomes and mean difference (MD) for continuous outcomes together with their 95% confidence interval (CI). Confidence in the evidence was assessed using GRADE for network meta-analysis.

RESULTS:

Ninety-four studies (7547 adults) were included. Two studies were conducted in children. No blood pressure-lowering agent reduced the risk of graft loss, withdrawal because of adverse events, death, cardiovascular or kidney outcomes compared with placebo/other drug class. Angiotensin-converting enzyme inhibitors and angiotensin receptor blocker therapy may incur greater odds of hyperkalemia compared with calcium channel blockers [odds ratio (OR) 5.48, 95% confidence interval (CI) 2.47-12.16; and OR 8.67, 95% CI 2.65-28.36; low certainty evidence, respectively).

CONCLUSION:

The evidentiary basis for the comparative benefits and safety of blood pressure lowering agents in people with a functioning kidney transplant is limited to guide treatment decision-making.

  • Panayotova GG
  • Lunsford KE
  • Quillin RC
  • Rana A
  • Agopian VG
  • et al.
Hepatology. 2024 May 1;79(5):1033-1047 doi: 10.1097/HEP.0000000000000715.
CET Conclusion
Reviewer: Mr John Fallon, Centre for Evidence in Transplantation, Nuffield Department of Surgical Sciences University of Oxford
Conclusion: This large open labelled multi-centre randomised control trial is an exciting development in the field of liver HMP. The key strength of this work is that 43% (n=27) of the HMP-O2 livers had continuous perfusion, having been placed on device at the donor. This is the first trial in liver HMP to do this and is an important development. Made possible by Organ Recovery Systems portable Lifeport Liver device, especially considering 81% travelled by air, a current limitation of the portable NMP devices. They demonstrated a nonsignificant reduction in EAD with 11% in HMP-O2 and 16% in SCS, while the finding is not significant it is in keeping with the 5 other published RCTs on HMP liver. The lack of significance may derive from the fact that within the intervention group only 24% were ECDs (including 5 DCD), upon sub-group analysis of these ECDs they find the reduction of EAD to be significant (20% in HMP-O2 and 33.3% in SCS p=0.004). This is in keeping with previous large RCTs that the beneficial effects of HMP-O2 are amplified in the ECD cohort, especially in DCDs seen in Rijn et al’s 2021 trial published in the New England Journal who perfused only DCD livers. None of their secondary outcomes reach significance, but with PNF only occurring in the SCS group with 3 patients and a further 2 (n=5 6.8%) went on to require re-transplant also due to ischaemic cholangiopathy. In HMP-O2 only 1 required retransplant, this was due to HAT. Biliary complications were nearly double in the SCS group (26.4% vs 12.7%) which is impressive, but again this failed to reach significance. The trends are encouraging, but the lack of significance is disappointing, the trial having not been powered for overall EAD rates. An increase cohort size and a focus on EADs could have led to more dramatic results with potentially significance in many of the outcomes. An interesting note is the preservation fluid used in HMP-O2 was Vasosol, a UW-like solution with the addition of nitric oxide donors and vasodilators, this is the first HMP RCT across all organs to utilise this solution and could, in part be responsible for some of the beneficial trends. Unfortunately, the study was not sufficiently powered to compare continuous HMP-O2 with end-ischaemic HMP-O2 and SCS, the overall storage duration being comparable, but the percentage of that time being perfusion obviously being highest in the continuous group. They demonstrate safety and non-inferior efficacy of a novel portable device, which as it becomes more popular and people become more familiar with placing livers on device at retrieval more data should emerge on continuous HMP-O2, this trial was an important step.
Aims: To assess if HMP-O2 improves liver transplant outcomes compare to cold storage.
Interventions: Livers were randomised to intervention, which was HMP-O2 on the Lifeport Liver Transporter device, perfused with Vasosol, or control, which was static cold storage.
Participants: 179 adult whole liver transplant recipients.
Outcomes: The primary outcome was early allograft dysfunction (EAD) as defined by the Olthoff criteria. Secondary outcome measures were PNF, AKI, graft survival, biliary complications. Vascular complications and death. Additional exploratory outcomes were hospital LOS, ICU LOS, lactate clearance, bleeding, incisional hernia and SAEs.
Follow Up: 12 months
BACKGROUND AND AIMS:

In liver transplantation, cold preservation induces ischemia, resulting in significant reperfusion injury. Hypothermic oxygenated machine perfusion (HMP-O 2 ) has shown benefits compared to static cold storage (SCS) by limiting ischemia-reperfusion injury. This study reports outcomes using a novel portable HMP-O 2 device in the first US randomized control trial.

APPROACH AND RESULTS:

The PILOT trial (NCT03484455) was a multicenter, randomized, open-label, noninferiority trial, with participants randomized to HMP-O 2 or SCS. HMP-O 2 livers were preserved using the Lifeport Liver Transporter and Vasosol perfusion solution. The primary outcome was early allograft dysfunction. Noninferiority margin was 7.5%. From April 3, 2019, to July 12, 2022, 179 patients were randomized to HMP-O 2 (n=90) or SCS (n=89). The per-protocol cohort included 63 HMP-O 2 and 73 SCS. Early allograft dysfunction occurred in 11.1% HMP-O 2 (N=7) and 16.4% SCS (N=12). The risk difference between HMP-O 2 and SCS was -5.33% (one-sided 95% upper confidence limit of 5.81%), establishing noninferiority. The risk of graft failure as predicted by Liver Graft Assessment Following Transplant score at seven days (L-GrAFT 7 ) was lower with HMP-O 2 [median (IQR) 3.4% (2.4-6.5) vs. 4.5% (2.9-9.4), p =0.024]. Primary nonfunction occurred in 2.2% of all SCS (n=3, p =0.10). Biliary strictures occurred in 16.4% SCS (n=12) and 6.3% (n=4) HMP-O 2 ( p =0.18). Nonanastomotic biliary strictures occurred only in SCS (n=4).

CONCLUSIONS:

HMP-O 2 demonstrates safety and noninferior efficacy for liver graft preservation in comparison to SCS. Early allograft failure by L-GrAFT 7 was lower in HMP-O 2 , suggesting improved early clinical function. Recipients of HMP-O 2 livers also demonstrated a lower incidence of primary nonfunction and biliary strictures, although this difference did not reach significance.

  • Murphy MA
  • Annunziato RA
Pediatr Transplant. 2024 May;28(3):e14726 doi: 10.1111/petr.14726.
BACKGROUND:

Pediatric transplantation can be a stressful process for patients and caregivers. Some individuals may experience post-traumatic stress symptoms (PTSS) and post-traumatic growth (PTG) as a result. Although post-traumatic stress disorder (PTSD) has been well-studied in this population, the purpose of the present scoping review is to provide a first synthesis of the existing literature on PTG in pediatric transplant populations.

METHODS:

We conducted a literature search of PsycINFO and Scopus in May 2023. Eligible articles must have included a sample of solid organ transplant (SOT) or stem cell transplant (SCT) recipients under age 18, siblings of recipients, or caregivers; and must have examined PTG.

RESULTS:

Twenty-three studies were identified, and nine studies met inclusion criteria and were included in the review (n = 5 cross sectional; n = 4 qualitative). Cross-sectional studies examined demographic, mental health, and medical correlates of PTG in children and caregivers. PTG was correlated with PTSS among caregivers. Qualitative studies identified themes along each of the five factors of PTG.

CONCLUSION:

Findings overwhelmingly focused on caregiver PTG. Qualitative study findings align with the theoretical model of PTG. Additional research is needed to investigate PTG in siblings of children with a transplant and associations between PTG and medication adherence. This scoping review provides insight into positive change processes following a transplant among children and their caregivers.

  • Bando M
  • Homma S
  • Date H
  • Kishi K
  • Yamauchi H
  • et al.
Respir Investig. 2024 May;62(3):402-418 doi: 10.1016/j.resinv.2024.02.014.

Idiopathic pulmonary fibrosis (IPF) is an interstitial lung disease with a poor prognosis and an unknown cause that generally progresses to pulmonary fibrosis and leads to irreversible tissue alteration. The "Guidelines for the treatment of idiopathic pulmonary fibrosis 2017," specializing in the treatment of IPF for the first time in Japan and presenting evidence-based standard treatment methods suited to the state of affairs in Japan, was published in 2017, in line with the 2014 version of "Formulation procedure for Minds Clinical Practice Guidelines." Because new evidence had accumulated, we formulated the "Guidelines for the treatment of Idiopathic Pulmonary Fibrosis 2023 (revised 2nd edition)." While keeping the revision consistent with the ATS/ERS/JRS/ALAT IPF treatment guidelines, new clinical questions (CQs) on pulmonary hypertension were added to the chronic stage, in addition to acute exacerbation and comorbid lung cancer, which greatly affect the prognosis but are not described in the ATS/ERS/JRS/ALAT IPF guidelines. Regarding the advanced stages, we additionally created expert consensus-based advice for palliative care and lung transplantation. The number of CQs increased from 17 in the first edition to 24. It is important that these guidelines be used not only by respiratory specialists but also by general practitioners, patients, and their families; therefore, we plan to revise them appropriately in line with ever-advancing medical progress.

  • Ring LL
  • Lindquist S
  • Rosthøj S
  • Larsen HK
  • Hædersdal M
  • et al.
Prev Med. 2024 May;182:107927 doi: 10.1016/j.ypmed.2024.107927.
OBJECTIVE:

This systematic review and meta-analysis aims to investigate the prevalence of cervical high-risk human papillomavirus (hrHPV) among kidney transplant recipients (KTRs) and, furthermore to compare it to that in immunocompetent controls.

METHODS:

A systematic literature search was conducted in PubMed, EMBASE, and Cochrane Library databases from January 2000 to February 2023, to identify studies investigating the prevalence of cervical hrHPV in KTRs. Pooled cervical hrHPV prevalences, odds ratios (ORs) comparing KTRs to controls and corresponding confidence intervals (CIs) were estimated using random effects logistic regression models. Heterogeneity between studies was assessed through the I2 statistic, and the significance was evaluated by the Cochrane's Q test.

RESULTS:

Altogether, 16 studies covering >1200 KTRs were included. The prevalence of cervical hrHPV in KTRs was 27.7% (95% CI 21.3-35.1) with substantial interstudy heterogeneity. Stratification indicated a higher prevalence in recent years (2019-2023) and in Asia (39% (95% CI 11.2-61.4)). The prevalence of HPV16 and HPV18 in KTRs was 8.0% (95% CI 3.9-15.9) and 1.7% (95% CI 0.8-3.7), respectively. Comparing hrHPV prevalence in KTRs and controls based on six studies including >500 KTRs and 1000 controls, the OR for hrHPV was 2.0 (95% CI 1.1-3.6).

CONCLUSIONS:

This meta-analysis establishes an increased cervical hrHPV prevalence in KTRs compared to controls. The increased risk may be associated with immunosuppressive therapy post-transplantation. Further research is needed to explore the potential benefits of HPV vaccination, including potential revaccination strategies in KTRs.

  • Xiao J
  • Zeng RW
  • Lim WH
  • Tan DJH
  • Yong JN
  • et al.
Liver Transpl. 2024 May 1;30(5):493-504 doi: 10.1097/LVT.0000000000000303.

The scarcity of liver grafts has prompted developments in living donor liver transplantations (LDLT), with previous literature illustrating similar outcomes in recipients compared to deceased donor transplants. However, significant concerns regarding living donor morbidity and mortality have yet to be examined comprehensively. This study aims to provide estimates of the incidence of various outcomes in living liver donors. In this meta-analysis, Medline and Embase were searched from inception to July 2022 for articles assessing the incidence of outcomes in LDLT donors. Complications in the included studies were classified into respective organ systems. Analysis of incidence was conducted using a generalized linear mixed model with Clopper-Pearson intervals. Eighty-seven articles involving 60,829 living liver donors were included. The overall pooled incidence of complications in LDLT donors was 24.7% (CI: 21.6%-28.1%). The incidence of minor complications was 17.3% (CI: 14.7%-20.3%), while the incidence of major complications was lower at 5.5% (CI: 4.5%-6.7%). The overall incidence of donor mortality was 0.06% (CI: 0.0%-0.1%) in 49,027 individuals. Psychological complications (7.6%, CI: 4.9%-11.5%) were the most common among LDLT donors, followed by wound-related (5.2%, CI: 4.4%-6.2%) and respiratory complications (4.9%, CI: 3.8%-6.3%). Conversely, cardiovascular complications had the lowest incidence among the subgroups at 0.8% (CI: 0.4%-1.3%). This study presents the incidence of post-LDLT outcomes in living liver donors, illustrating significant psychological, wound-related, and respiratory complications. While significant advancements in recent decades have contributed towards decreased morbidity in living donors, our findings call for targeted measures and continued efforts to ensure the safety and quality of life of liver donors post-LDLT.