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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.

  • 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.

  • 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.

  • Taneja V
  • Anand RS
  • El-Dallal M
  • Dong J
  • Desai N
  • et al.
Inflamm Bowel Dis. 2024 Apr 3;30(4):585-593 doi: 10.1093/ibd/izad108.
BACKGROUND:

Patients undergoing organ transplantation are often on immunosuppressing medications to prevent rejection of the transplant. The data on use of concomitant immunosuppression for inflammatory bowel disease (IBD) and organ transplant management are limited. This study sought to evaluate the safety of biologic and small molecule therapy for the treatment of IBD among solid organ transplant recipients.

METHODS:

Medline, Embase, and Web of Science databases were systematically searched for studies reporting on safety outcomes associated with the use of biologic and small molecule therapy (infliximab, adalimumab, certolizumab, golimumab, vedolizumab, ustekinumab, and tofacitinib) in patients with IBD postsolid organ transplant (eg, liver, kidney, heart, lung, pancreas). The primary outcome was infectious complications. Secondary outcomes included serious infections, colectomy, and discontinuation of biologic therapy.

RESULTS:

Seven hundred ninety-seven articles were identified for screening, yielding 16 articles for the meta-analyses with information on 163 patients. Antitumor necrosis factor α (Anti-TNFs; infliximab and adalimumab) were used in 8 studies, vedolizumab in 6 studies, and a combination of ustekinumab or vedolizumab and anti-TNFs in 2 studies. Two studies reported outcomes after kidney and cardiac transplant respectively, whereas the rest of the studies included patients with liver transplants. The rates of all infections and serious infections were 20.09 per 100 person-years (100-PY; 95% CI, 12.23-32.99 per 100-PY, I2 = 54%) and 17.39 per 100-PY (95% CI, 11.73-25.78 per 100-PY, I2 = 21%), respectively. The rates of colectomy and biologic medication discontinuation were 12.62 per 100-PY (95% CI, 6.34-25.11 per 100-PY, I2 = 34%) and 19.68 per 100-PY (95% CI, 9.97-38.84 per 100-PY, I2 = 74%), respectively. No cases of venous thromboembolism or death attributable to biologic use were reported.

CONCLUSION:

Biologic therapy is overall well tolerated in patients with solid organ transplant. Long-term studies are needed to better define the role of specific agents in this patient population.

  • Mac Curtain BM
  • Qian W
  • Temperley HC
  • O'Mahony A
  • Ng ZQ
  • et al.
Hernia. 2024 Apr;28(2):301-319 doi: 10.1007/s10029-023-02879-9.
CET Conclusion
Reviewer: Mr Keno Mentor, Centre for Evidence in Transplantation, Nuffield Department of Surgical Sciences University of Oxford
Conclusion: This systematic review synthesised the available data reporting on the rate and associated risk factors of incisional hernia (IH) after renal transplantation. The authors report on pooled results which are broadly similar to that of other surgical groups, with obesity, smoking and immunosuppression reported as the main risk factors for the development of IH. There are a number of fundamental errors in the statistical analysis. For example, forest plots are used inappropriately to depict cross-sectional data, and the risk of bias tool was modified by the authors resulting in all included studies being rated as ‘good’ or ‘very good’.
Aims: This study aimed to summarise the current literature on rates, risk factors and outcomes of incisional hernias following renal transplantation.
Interventions: Electronic databases including PubMed, EMBASE and the Cochrane CENTRAL were searched. Studies were selected independently by two reviewers and data were extracted independently by three reviewers. Risk of bias was assessed using a modified Newcastle–Ottawa scale.
Participants: 20 studies were included in the review.
Outcomes: The primary outcome was rates of IH. Secondary outcomes included risk factors for IH, and management and outcomes of IH.
Follow Up: N/A
PURPOSE:

Incisional hernia (IH) post renal transplant (RT) is relatively uncommon and can be challenging to manage clinically due to the presence of the kidney graft and patient immunosuppression. This systematic review and meta-analysis synthesises the current literature in relation to IH rates, risk factors and outcomes post RT.

METHODS:

PubMed, EMBASE, and Cochrane Central Registry of Controlled Trials (CENTRAL) were searched up to July 2023. The most up to date Preferred Reporting Items for Systematic Reviews and Meta Analyses guidelines were followed. Pertinent clinical information was synthesised. A meta-analysis of the pooled proportions of IH rates, the rates of patients requiring surgical repair and the rates of recurrence post RT are reported.

RESULTS:

Twenty studies comprising 16,018 patients were included in this analysis. The pooled rate of IH occurrence post RT was 4% (CI 3-5%). The pooled rate of IH repair post RT was 61% (CI 14-100%). The pooled rate of IH recurrence after repair was 16% (CI 9-23%). Risk factors identified for IH development post RT are BMI, immunosuppression, age, smoking, incision type, reoperation, concurrent abdominal wall hernia, lymphocele formation and pulmonary disease.

CONCLUSIONS:

IH post RT is uncommon and the majority of IH post RT are repaired surgically on an elective basis.

  • Doshi K
  • Raina R
  • Ng KH
  • Koch V
  • Bhatt GC
  • et al.
Hemodial Int. 2024 Apr;28(2):198-215 doi: 10.1111/hdi.13138.
INTRODUCTION:

Health-related quality of life (HRQoL) studies demonstrate the impact of end-stage renal disease (ESRD) on the physical and psychosocial development of children. While several instruments are used to measure HRQoL, few have standardized domains specific to pediatric ESRD. This review examines current evidence on self and proxy-reported HRQoL among pediatric patients with ESRD, based on the Pediatric Quality of Life Inventory (PedsQL) questionnaires.

METHODS:

Following PRISMA guidelines, we conducted a systematic review and meta-analysis on HRQoL using the PedsQL 4.0 Generic Core Scale (GCS) and the PedsQL 3.0 ESRD Module among 5- to 18-year-old patients. We queried PubMed, Embase, Web of Science, CINAHL, and Cochrane databases. Retrospective, case-controlled, and cross-sectional studies using PedsQL were included.

FINDINGS:

Of 435 identified studies, 14 met inclusion criteria administered in several countries. Meta-analysis demonstrated a significantly higher total HRQoL for healthy patients over those with ESRD (SMD:1.44 [95% CI: 0.78-2.09]) across all dimensional scores. In addition, kidney transplant patients reported a significantly higher HRQoL than those on dialysis (PedsQL GCS, SMD: 0.33 [95% CI: 0.14-0.53]) and (PedsQL ESRD, SMD: 0.65 [95% CI: 0.39-0.90]) concordant with parent-proxy reports.

DISCUSSION:

Patients with ESRD reported lower HRQoL in physical and psychosocial domains compared with healthy controls, while transplant and peritoneal dialysis patients reported better HRQoL than those on hemodialysis. This analysis demonstrates the need to identify dimensions of impaired functioning and produce congruent clinical interventions. Further research on the impact of individual comorbidities in HRQoL is necessary for developing comprehensive, integrated, and holistic treatment programs.

  • Klonarakis MP
  • Dhillon M
  • Sevinc E
  • Elliott MJ
  • James MT
  • et al.
Transplant Rev (Orlando). 2024 Apr;38(2):100834 doi: 10.1016/j.trre.2024.100834.

Delayed graft function (DGF) is a common post-operative complication with potential long-term sequelae for many kidney transplant recipients, and hemodynamic factors and fluid status play a role. Fixed perioperative fluid infusions are the standard of care, but more recent evidence in the non-transplant population has suggested benefit with goal-directed fluid strategies based on hemodynamic targets. We searched MEDLINE, EMBASE, Cochrane Controlled Trials Registry and Google Scholar through December 2022 for randomized controlled trials comparing risk of DGF between goal-directed and conventional fluid therapy in adults receiving a living or deceased donor kidney transplant. Effect estimates were reported with odds ratios (OR) and pooled using random effects meta-analysis. We identified 4 studies (205 participants) that met the inclusion criteria. The use of goal-directed fluid therapy had no significant effect on DGF (OR 1.37 95% CI, 0.34-5.6; p = 0.52; I2 = 0.11). Subgroup analysis examining effects among deceased and living kidney donation did not reveal significant differences in the effects of fluid strategy on DGF between subgroups. Overall, the strength of the evidence for goal-directed versus conventional fluid therapy to reduce DGF was of low certainty. Our findings highlight the need for larger trials to determine the effect of goal-directed fluid therapy on this patient-centered outcome.

  • Li Y
  • Chen J
  • Tang Y
  • Lin T
  • Song T
Asian J Surg. 2024 Apr;47(4):1723-1733 doi: 10.1016/j.asjsur.2023.12.118.

The relationship between sarcopenia and prognosis in solid organ transplantation recipients (SOTr) remains unverified. We aimed to quantify the prevalence of pretransplant sarcopenia and its effect on patient and graft survival in SOTr. We used PubMed, EMBASE, Cochrane Library and Web of Science to search relevant studies published in English (from inception to December 31, 2021). Prospective and retrospective cohort studies that reported the prevalence of sarcopenia before transplant or the association between sarcopenia and clinical outcomes in SOTr were included. Primary outcomes were the prevalence of sarcopenia and its impact on patient and graft survival. Secondary outcomes included perioperative complications, acute rejection, length of hospital stay, length of intensive care unit stay (ICU LOS) and early readmission. Thirty-nine studies involving 5792 patients were included. Pooled prevalence of sarcopenia amongst SOTr candidates was 40 % (95 % confidence interval [CI]: 34%-47 % and I2 = 97 %). Sarcopenia was associated with increased risk of death (hazard ratio [HR] = 1.87, 95 % CI: 1.46-2.41 and I2 = 60 %), poor graft survival (HR = 1.71, 95 % CI: 1.16-2.54 and I2 = 57 %) and increased liver graft loss (HR = 1.43, 95 % CI: 1.03-1.99 and I2 = 38 %). Patients with sarcopenia demonstrated increased incidence of perioperative complications (risk ratio [RR] = 1.34, 95 % CI: 1.17-1.53 and I2 = 40 %), long ICU LOS (mean difference = 2.31 days, 95 % CI: 0.58-4.04 and I2 = 97 %) and decreased risk of acute rejection (RR = 0.61, 95 % CI: 0.42-0.89 and I2 = 0 %). In Conclusion, sarcopenia is prevalent in SOTr candidates and associated with death and graft loss. Identifying sarcopenia before transplantation and intervening may improve long-term outcomes.

  • Khondker A
  • Ahmad I
  • Kim K
  • Malik S
  • Kim JK
  • et al.
Pediatr Nephrol. 2024 Apr;39(4):1053-1063 doi: 10.1007/s00467-023-06209-0.
BACKGROUND:

Children with prune belly syndrome (PBS) are at higher risk of developing kidney dysfunction and requiring kidney replacement therapy (KRT). While studies have described surgical and survival outcomes in these populations, there has yet to be a focused synthesis of evidence regarding kidney outcomes in this population. Here, the focus of this scoping review was to highlight knowledge gaps and report standards on kidney outcomes in PBS of all ages.

METHODS:

Following scoping review methodology, EMBASE, MEDLINE, and Scopus were searched for peer-reviewed literature that describe kidney outcomes in PBS. All studies with a broad set of kidney outcomes (such as kidney function measures, chronic kidney disease (CKD), KRT and associated outcomes) were included. Findings were summarized and qualitatively synthesized.

RESULTS:

Of the 436 unique records identified, 25 were included for synthesis. A total of 17 studies (441 patients) reported on kidney insufficiency outcomes, with an estimated prevalence of CKD ranging from 8 to 66%. A total of 15 studies (314 patients) described KRT, primary kidney transplant, and outcomes. Of these, the age for KRT ranged from 4 to 21 years, and graft survival ranged from 22 to 87% by last follow-up (range 1.3-27 years).

CONCLUSIONS:

There is significant variability in studies reporting kidney outcomes in PBS which limits meaningful synthesis. There is a need for future studies with comprehensive reporting of confounders and drivers for kidney insufficiency in PBS.