Pericardial Effusion Associated With Sirolimus Use After Renal Transplantation: A Single-Center Case Series

Pericardial effusion and cardiac tamponade following renal transplantation have been recognized as a potentially serious complications associated with the use of sirolimus for immunosuppression. Our study aims to analyze the development of sirolimus-associated pericardial effusion.Patients who underwent renal transplantation at our institution between 2001 and 2014 were reviewed and the correlation between sirolimus exposure and pericardial effusion was determined. Nineteen out of 792 patients who received a renal transplant over this 14-year period (incidence 2.4%) developed symptomatic pericardial effusion (determined by the need for pericardiocentesis or a pericardial window). All patients had a pre-transplantation cardiac workup, including echocardiogram, which did not reveal the presence of pericardial effusion. Our cohort of patients is mostly male (57.9%) and Caucasian (73.7%), which is consistent with the makeup of transplant recipients at our center. The mean age was 52.42 years at the time of transplantation. The development of symptomatic pericardial effusions occurred at a mean of 5.06 (.5–9.8) years after renal transplant while on sirolimus therapy. Sirolimus levels at diagnosis were 5.19–7.47 ng/mL. No significant pericardial effusion (resulting in tamponade physiology) recurred after therapeutic intervention, including cessation of sirolimus with or without pericardial drainage. This study is the largest single-center report of the possible association between pericardial effusion in renal transplant recipients who received sirolimus. Due to the widespread use of sirolimus in organ transplantation, clinicians must remain vigilant for this potential cardiac complication.     

Pericardial effusion coincident with sirolimus therapy: a review of Wyeth's safety database

Sirolimus is an immunosuppressive agent approved for prophylaxis of acute rejection in renal transplant patients aged 13 years or older. A retrospective review of pericardial effusion coincident with sirolimus therapy was conducted from key clinical trials and spontaneous reporting sources. A significantly higher rate of pericardial effusion occurred with sirolimus versus azathioprine treatment in a cardiac transplantation trial (28.6% versus 9.3%, respectively). Cases of pericardial effusion were also observed in the sirolimus treatment arms of three de novo renal transplant studies (rates 0.5 to 1.9%). Although most of the pericardial effusions occurred in cardiac transplantation, sirolimus is not approved for this use. As of January 31, 2007, the Wyeth safety database (which includes clinical trial data and spontaneous reports) contained reports of pericardial effusion in 56 sirolimus-treated patients, 31 of whom required pericardial drainage. These data suggest that pericardial effusion should be considered in the differential diagnosis of a clinical deterioration in posttransplant patients treated with sirolimus. The adverse reaction of pericardial effusion has been added to product labeling.     

Predictors of pericardial effusion after orthotopic heart transplantation

OBJECTIVES: Pericardial effusion occurs frequently after orthotopic heart transplantation, but the causes of this complication have not been well described. This study was designed to identify factors predisposing toward the development of significant postoperative pericardial effusions in a large, single-institution population of orthotopic heart transplant recipients. METHODS: A retrospective review of more than 90 preoperative, intraoperative, and postoperative variables was conducted for 241 patients undergoing orthotopic heart transplantation from September 1988 to December 1999. Patients who had significant postoperative pericardial effusions develop were identified from postoperative echocardiograms by standard criteria. Factors associated with the development of significant pericardial effusions were determined by multivariate logistic regression analysis. RESULTS: Echocardiographic data were available for 203 of 241 transplant recipients. Forty-two patients (21%) had significant effusions develop. According to multivariate analysis, pericardial effusions were less likely to occur in recipients with a history of previous cardiac surgery (odds ratio 0.13, 95% confidence interval 0.05-0.36, P <.0001) and with greater weight (odds ratio 0.96, 95% confidence interval 0.94-0.99, P <.0048). Pericardial effusions were more likely to occur in patients who had received aminocaproic acid during the operation (odds ratio 5.92, 95% confidence interval 2.23-15.72, P <.0008). Patient survival and hospital length of stay did not differ between patients with and without postoperative pericardial effusions. CONCLUSIONS: Postoperative pericardial effusions develop in approximately 20% of patients undergoing orthotopic cardiac transplantation. On the basis of the risk factors identified in this study, prevention may prove difficult, although avoidance of the intraoperative use of aminocaproic acid may be helpful.     

Sirolimus therapy may cause cardiac tamponade

The side‐effects associated with the immunosuppressive drug sirolimus are numerous and constitute a major limitation for its use in renal transplantation. In this study, we describe two cases of renal transplant recipients treated with sirolimus who developed pericardial tamponade associated with interstitial pneumonia, proteinuria, microcytic anemia and, in one case, lymphocytic meningitidis. An extensive search for infectious agents was negative, and all symptoms disappeared after sirolimus interruption. Therefore, this case demonstrates for the first time that sirolimus can cause pericardial tamponade as well as lymphocytic meningitidis.     

Sirolimus experience in heart transplantation

INTRODUCTION: Sirolimus is a potent, nonnephrotoxic immunosuppressant with antiproliferative activity in nonimmune cells. Recent data support the conversion in late renal failure secondary to calcineurin inhibitors (CNIs), with limited experience in de novo regimens in patients with predictive factors of postoperative renal impairment. OBJECTIVE: We evaluated our experience of sirolimus-based immunosuppression administered to 25 heart transplant recipients. METHODS: A retrospective analysis of 25 heart transplant recipients who received sirolimus included 17 conversions due to late CNI-related chronic renal dysfunction, six patients with a de novo regimen, and two patients who developed posttransplant pulmonary neoplasms. The conversion from CNI to sirolimus was started with 2 mg, with an average time after transplantation of 78 +/- 43 months and a mean baseline serum creatinine level of 2.1 +/- 0.45 mg/dL. The mean clinical follow-up was 17 +/- 9 months postconversion, and included echocardiography and laboratory studies. In the de novo group successive endomyocardial biopsies were performed during the first semester. RESULTS: Serum creatinine fell from 2.1 +/- 0.45 mg/dL to 1.8 +/- 0.51 mg/dL (P = .012). Mean sirolimus levels were 15 +/- 9 ng/mL (doses 2.2 +/- 0.4 mg). This improvement continued until 3 months (creatinine 1.5 +/- 0.35 P < .01)/sirolimus levels 11.7 +/- 5 ng/mL [1.9 +/- 0.7 mg]), with maintenance at 6 months (1.58 +/- 0.3 mg/dL/14 +/- 4 ng/mL [1.85 +/- 0.7 mg]) and 1-year postconversion (1.53 +/- 0.39 mg/dL; P = .019/10.7 +/- 2.5 ng/mL [1.5 +/- 0.7 mg]). De novo, after a mean follow-up of 13 months (range 3 to 35), sirolimus appeared to increase the incidence of a moderate histological grade of rejection without hemodynamic compromise. Side effects were common (63%), including peripheral edema, skin eruptions, and pericardial effusion. Only one patient discontinued treatment, due to intestinal intolerance. Four patients died during follow-up: two because of lung neoplasms and two because of progressive graft vessel disease. CONCLUSION: Sirolimus improved late CNI-related chronic renal dysfunction. Kidney function was preserved using a de novo CNI-free immunosuppressive regimen for recent cardiac transplant recipients.     

Everolimus-Induced Systemic Serositis After Simultaneous Liver and Kidney Transplantation: A Case Report

Although everolimus, a mammalian target of rapamycin inhibitor, has been used as a potent immunosuppressive agent in organ transplantation, data regarding its adverse effect profile compared with that of sirolimus in clinical circumstances are limited. A 50-year-old man who underwent simultaneous liver and kidney transplantation 14 months previously was admitted with large pleural effusion, pericardial effusion, and ascites. Laboratory findings and cultures for possible infectious causes were all negative. Pericardial window surgery with drainage of the pericardial fluid was performed on day 3. Pleural and pericardial biopsy revealed non-specific inflammation without evidence of malignant cells. Everolimus was discontinued and replaced by mycophenolate mofetil on day 4. Significant clinical improvement was observed after discontinuation of everolimus, and follow-up echocardiography and chest radiography showed no recurrence of the pericardial or pleural effusion after discharge.     

Bioprosthetic Pulmonary Valve Dysfunction in Congenital Heart Disease

BackgroundWe aim to identify the incidence and timing of dysfunction and failure of stented bioprosthetic valves in the pulmonary position in congenital heart disease patients.MethodsA total of 482 congenital heart disease patients underwent 484 stented bioprosthetic pulmonary valve implantations between 2008 and 2018. There were 164 porcine valves (Porcine) and 320 bovine pericardial valves (Pericardial) implanted. Primary endpoints were survival, valve dysfunction, and valve failure.ResultsPericardial valves were implanted in older patients (22.0, interquartile range [IQR] 14-33 vs 16.0, IQR 11-23 years, P < 0.001). Five-year survival (96.7% vs 97.9%) for the Pericardial and Porcine groups, respectively, were similar, P > 0.05. Forty-six (34%) Porcine and 75 (27%) Pericardial group patients met criteria for valve dysfunction at a median echocardiographic follow-up time of 7.43 years (IQR 4.1-9.5 years) and 3.26 years (IQR 1.7-4.7 years), respectively. More Pericardial group patients suffered from at least mild late PR while late median peak gradient was higher in the Porcine group, P < .001 for both. Risk factors for valve dysfunction included decreasing patient age for the entire cohort (hazard ratio [HR] 1.02, 95% confidence interval [CI] 1.00-1.04, P = .015) and lack of anticoagulation at discharge for the Porcine group (HR 3.06, 95% CI 1.03-9.10, P = .044) but not the Pericardial group. Five-year cumulative incidence of dysfunction was 39% for the Pericardial group and 17% for the Porcine group.ConclusionsPorcine stented and bovine pericardial stented valves can be implanted in the pulmonary position in all age groups safely. However, despite similar rates of valve failure, bovine pericardial stented valves have a higher incidence of valve dysfunction at mid-term follow-up.     

Generalized lymphedema in a sirolimus-treated renal transplant patient

Abstract:  Generalized lymphedema is an extremely rare effect of sirolimus therapy in renal transplant recipients. We describe the development of this complication in a 56-yr-old woman, who was given an experimental protocol with cyclosporine, sirolimus, steroids, and basiliximab. Following the protocol, after one month, the patient was randomized to the "sirolimus only" group, while cyclosporine was completely suspended and the oral steroids were continued. Three months later, the patient was admitted for severe lymphedema of the lower limbs, with significant weight increase, massive ascites and dyspnea, but excellent renal function. A chest radiography and an ultrasound study of the heart showed a moderate pleural and pericardial effusion. An abdominal ultrasound scan showed two small lymphoceles next to the transplanted kidney, confirmed with a CT scan. After sirolimus discontinuation the generalized lymphedema started to improve and three months later all the symptoms had disappeared.     

Diabetes Mellitus and Renal Transplantation in Adults: Is There Enough Evidence for Diagnosis,Treatment, and Prevention of New-Onset Diabetes After Renal Transplantation?

BackgroundNew-onset diabetes after renal transplantation (NODAT) is one of the most frequent metabolic complications after transplantation; it is present in ～25% of kidney transplant recipients, increasing their cardiovascular risk and inducing graft damage. The medical approach of this entity is still a matter of controversy, so our aim was to review the evidence available and offer a practical approach for diagnosis, treatment, and follow-up.MethodsA systematic review of the literature in the Medline, Embase, Cochrane, and Lilacs databases was carried out with the use of the terms “Diabetes Mellitus,” “Kidney Transplantation,” “Drug Therapy,” “Prognosis,” “Therapeutics,” and “Risk Factors.” Randomized controlled trials, meta-analyses, and observational studies were included.ResultsThe main risk factors were elevated body mass index, family history of diabetes, recipient >60 years old, hepatitis C virus infection, and treatment with tacrolimus/corticosteroids or sirolimus. Some small studies suggest that thiazolidinediones, sulfonylureas, glinides, and dipeptidyl peptidase 4 inhibitors could be useful in the treatment of the disease. NODAT constitutes a prognostic factor for the renal transplant. Although there is a higher risk of developing diabetes in kidney transplant recipients than in the general population, both populations share the same diagnostic criteria.ConclusionsThere is no consensus on the treatment regimen for these patients. It is necessary to review the diagnostic criteria and the screening methods for NODAT, given the higher susceptibility of kidney transplant recipients to develop this entity; therefore, an earlier intervention could be implemented to decrease the negative effects that this disease has on the kidney graft and the recipient.     

Vascular endothelial function of sirolimus maintenance regimen in renal transplant recipients

Endothelial dysfunction is of vital importance as it may cause ischemia and dysfunction in various organs, especially the heart and kidneys. Despite this problem being well documented in patients with end-stage renal disease, there are insufficient data considering this issue to demand sirolimus use in renal transplantation. One potential cause of endothelial dysfunction in renal transplantation patients may be the use of the conventional protocols with cyclosporine [CsA]- versus sirolimus-based therapy. We studied 22 renal transplant recipients including on CsA (n = 14; group I, and sirolimus (n = 8; group II). Endothelial functions of the brachial artery were evaluated using high-resolution vascular ultrasound. Endothelium-dependent and-independent vasodilatations were assessed by sublingual nitroglycerine (NTG). Results are presented as percentage from baseline values. Significant endothelial dysfunction was noted among renal transplant patients treated with CsA. Endothelium-dependent vasodilatation was 3.6% ± 2.8% in group I and 14.5% ± 3.2% in group II (P < 0.002). The increase in brachial artery diameter after sublingual NTG measured 9.9% ± 4.7% versus 22.1% ± 5.9% in groups I and group II, respectively. This observation indicated that endothelial vasodilatation was preserved among patients on sirolimus but not CsA therapy. We concluded that endothelial vasodilatation is impaired in renal transplant recipients. Moreover, sirolimus seems to be more useful than CsA to overcome the compromised vasculature as observed in diabetic and elderly patients.     

Late-onset renal failure after liver transplantation: role of posttransplant alcohol use

BACKGROUND: Late-onset renal failure is being increasingly recognized as a complication in patients undergoing liver transplantation for hepatitis C virus (HCV). However, its precise incidence, predisposing risk factors, and impact on outcome after liver transplantation, have not been defined. METHODS: The development of late-onset renal failure (defined as serum creatinine persistently >2.0 mg/dl, occurring more than 6 months posttransplant) was assessed in 120 consecutive liver transplant recipients who survived at least 6 months after transplantation. Fifty-seven percent (68/120) of the patients had undergone transplantation for liver disease due to HCV. The median follow-up was 5 years. RESULTS: Late-onset renal failure developed in 28% (33/120)of the patients. Posttransplant alcohol use (P=0.0001), posttransplant diabetes (P=0.0042), and recurrent HCV hepatitis (P=0.019) were significantly associated with late onset renal failure. In multivariate analysis, alcohol use (O.R. 10.7, 95%; CI 2.4-35.9, P=0.001) and diabetes (O.R. 2.1, 95%; CI 1.1-9.9, P=.03) were independently significant predictors of late onset renal failure. When only patients transplanted for HCV were analyzed, posttransplant alcohol use (P=0.004) was the only significant independent predictor of late-onset renal failure. HCV genotype 1b, as compared with other HCV genotypes, was associated with a higher rate of late-onset renal failure in patients with HCV; 70% of the patients with genotype 1b versus 32% of those with 1a and 33% of those with 2b, developed late onset renal failure (P=0.03). At a median follow up of 5 years, mortality in patients with HCV with late-onset renal failure was 52% as compared with 2% in those without renal failure (P=.0001). CONCLUSION: Late-onset renal failure in patients with HCV portended a grave outcome. Alcohol use was an independent predictor of late-onset renal failure in patients with HCV and represents a potentially modifiable risk factor for late-onset renal failure in these patients.     

Pericardial effusion following pulmonary resection

Objective Postoperative pericardial effusion commonly occurs after open heart surgery. However, after general thoracotomy such as pulmonary resection, there have been few reports of pericardial effusion. The purpose of this study is to investigate patients with pericardial effusion following pulmonary resection.Methods: Among 2,385 patients with pulmonary resection for lung neoplasm in our institute, eight patients, whose pericardium had never been opened during the operation, developed pericardial effusion. The clinical characteristics of the eight patients were analyzed.Results: Pericardial effusion after pulmonary resection was divided into two subtypes: pericardial effusion in three patients with left thoracotomy occurring within 30 days postoperatively, and pericardial effusion in the remaining five patients with right thoracotomy occurring more than 30 days postoperatively. Pericardiotomy or pericardiocentesis was performed in three symptomatic patients, and the remaining five asymptomatic patients were treated with diuretics. Pericardial effusion disappeared in three of the five patients about 1–3 months after the conservative treatment, while, in the remaining patients, because pericardial effusion had increased gradually, pericardiocentesis was performed.Conclusion: From our experience, the treatment strategy of drainage for early pericardial effusion and diuretics for late pericardial effusion seems to be appropriate. (Jpn J Thorac Cardiovasc Surg 2006; 54:193-198)     

Impact on renal function of the use of sirolimus in cardiac transplantation

INTRODUCTION: During the last few years sirolimus has been introduced as an alternative to preserve renal function in transplant recipients receiving calcineurin inhibitors. MATERIALS AND METHODS: We reviewed our results on the use of sirolimus in cardiac transplant recipients. RESULTS: Twenty-seven patients with an average age of 63 years received sirolimus. The average time after transplantation was 73.4 +/- 58.9 months and the average follow-up was 31.7 +/- 18.01 months. Sirolimus was prescribed in 37% of cases due to chronic renal failure (CRF), 14.8% because of cardiac allograft vasculopathy (CAV), 11.1% for tumors, 22.2% de novo, 7.4% for CRF and tumor, and 7.4% for CRF and CAV. Among the patients with CRF (n = 14), there were 5 (35%) on dialysis at the moment of starting the treatment and 1 was retired from dialysis. The other 4 (28.5%) patients had to be treated with dialysis after starting the treatment. In all, 42.8% of the patients with nephropathy maintained stable renal function or improved. Among the 17 (63%) patients who did not require dialysis, there was no significant change in renal function after 6 months or 1, 2, and 3 years follow-up. CONCLUSIONS: The use of sirolimus in cardiac transplantation maintains stable renal function in the majority of patients in the medium term.     

Sirolimus immunosuppression in pediatric heart transplant recipients: a single-center experience.

BACKGROUND: Sirolimus has been used in heart transplant recipients for treatment of rejection, alternative immunosuppression (IS) and promotion of regression and prevention of graft vasculopathy (coronary artery disease [CAD]). This study reports on our center's experience with 16 children who underwent heart transplantation. METHODS: Data were obtained by retrospective review. RESULTS: Median age at time of review was 12.3 years (n = 16, 5.1 to 18.0 years; 9 boys, 7 girls), and at time of transplant 7.5 years (6 months to 18.0 years). Median time of sirolimus introduction was 2.7 years (1 month to 8.2 years) post-transplant. Fifteen patients were on steroids, 10 on tacrolimus (FK) and mycophenolate mofetil (MMF), 5 on FK and 1 on MMF with no calcineurin inhibitors (CNIs). The average dose of sirolimus was 0.25 mg/kg or 7.0 mg/m(2) to maintain a target level of 5 to 15 mug/liter. Sirolimus was started for CAD in 6 patients (38%), rejection in 5 (31%), and in 5 with combinations of CNI intolerance, CAD, renal dysfunction and rejection. All 6 who received sirolimus for rejection (International Society for Heart and Lung Transplantation [ISHLT] Grade 3A) showed improvement on follow-up biopsies. Two of 3 who received sirolimus for renal dysfunction showed improvement (glomerular filtration rate [GFR] 43 to 67 and 32 to 106 ml/min per 1.73 m(2), respectively). Side effects included hyperlipidemia (38%), abdominal pain (31%), mouth ulcers (26%), anemia or neutropenia (12.5%), persistent pericardial effusion (6%) and interstitial lung disease (6%). Sirolimus therapy was discontinued in 3 patients due to side effects. CONCLUSIONS: In this study sirolimus was found to be a valuable IS agent for the management of rejection, significant renal dysfunction and CNI side effects. These results support the need for prospective studies of the role of sirolimus in primary rejection prophylaxis, primary CAD prophylaxis and CAD regression. There also exists a need to establish an adverse event profile for this drug.     

Late Onset Cerebral Nocardiosis in a Sensitized Renal Transplant Recipient Following Alemtuzumab Induction: A Case Report

BackgroundBalancing immunosuppressive regimen to prevent rejection yet avoiding severe infectious complications remains a key challenge following renal transplantation, especially in patients sensitized after exposure to human leukocyte antigens. We herein report a late onset infection with nocardia in a sensitized renal transplant recipient.Case presentationA 65-year-old male patient, who had received kidney transplantation with alemtuzumab induction due to human leukocyte antigen-sensitization 3 years ago, was admitted with headache and dizziness. A cerebral magnetic resonance imaging scan showed a right parieto-occipital brain abscess. Surgical abscess drainage was performed and microbiology analysis detected Nocardia paucivorans in the abscess fluid. Laboratory results showed persistently reduced lymphocyte and T-cell counts 3 years after transplantation. We started intravenous antibiotic therapy with high dose trimethoprim/sulfamethoxazole and imipenem/cilastatin. Furthermore, immunosuppression was adapted with discontinuation of mycophenolate. After 7 weeks of intravenous antibiotic therapy, the patient was switched to an oral antibiotic regimen with amoxicillin/clavulanic acid and minocycline. In the follow-up magnetic resonance imaging scan, cerebral lesions were substantially reduced, initial symptoms completely disappeared, and allograft function remained stable.ConclusionsInduction therapy with the CD52-antibody alemtuzumab enables transplantation in highly sensitized patients but leads to lymphocyte depletion for several weeks. Our patient presented with prolonged lymphopenia and a significantly reduced T-cell count 3 years after transplantation. To our knowledge, our case is the first to describe a late-onset nocardia infection 3 years after alemtuzumab induction in a renal transplant recipient. It underlines the importance of considering this rare disease in transplant patients, especially after induction therapy with depleting antibodies.     

Outcomes of Living Kidney Transplantation for Mitochondrial Disease Patients: A Case Series

PurposeMitochondrial disease can affect many organs, including the brain, nerves, heart, liver, eyes, ears, pancreas, and kidneys. Kidney transplantation is a treatment option for renal failure due to mitochondrial disease; however, the prognosis of patients who undergo kidney transplantation for mitochondrial disease is unknown. Here we evaluated the outcomes of kidney transplant recipients with mitochondrial disease.MethodsClinical data were obtained from 4 kidney transplantation recipients who were followed at our department. Of the 4 transplantations, 3 were performed in our department: 2 patients received kidneys from their fathers, and a third from his wife. The fourth recipient received a kidney from her mother—who had a mitochondrial genetic abnormality—at another hospital. Of the 4 recipients, 3 were diagnosed with mitochondrial disease before the transplantation, and the fourth was diagnosed after. All recipients had sensorineural deafness and diabetes mellitus, and only 1 had a history of encephalopathy and stroke-like episodes before the transplantation.ResultsOne patient died 2 years after transplantation due to encephalopathy progression with stable kidney function. The grafted kidney of the patient who received it from her mother lost function at 5 years post-transplantation. A graft biopsy revealed focal segmental glomerular sclerosis due to mitochondrial disease. The other patients’ kidney functions remained stable. None of the recipients experienced rejection.ConclusionsIn kidney transplantation for mitochondrial disease, attention should be paid to the exacerbation of comorbidities, while careful consideration should be given to donors with a mitochondrial genetic abnormality.     

The Changing Landscape of Pneumocystis Jiroveci Infection in Kidney Transplant Recipients: Single-Center Experience of Late-Onset Pneumocystis Pneumonia

BackgroundPneumocystis jiroveci pneumonia (PCP) is a life-threatening pulmonary infection after kidney transplantation (KTx). Its onset in the current era of modern immunosuppression and of routine use of universal PCP prophylaxis seems to differ from its onset in previous decades in terms of late onset with subtle clinical presentation, indicating a need for increased vigilance.MethodsWe retrospectively studied all KTx recipients from our center who underwent bronchoscopy and bronchoalveolar lavage (BAL) between 2009 and 2018. Of these, all cases with confirmed PCP any time after the first post-KTx year were included in the analysis.ResultsAmong 60 patients with KTx who had undergone bronchoscopy and BAL, 12 cases with late-onset PCP were identified. PCP appeared late at a median of 10.8 (interquartile range, 2.4-15.8) years after transplantation. Patients’ mean age was 59 years, and all were receiving stable low-dose immunosuppression. Most of the patients (67%) had received PCP prophylaxis after KTx. Five out of 12 patients (42%) had concomitant cytomegalovirus (CMV) reactivation at the time of PCP. In almost all cases, clinical presentation was mild. Treatment consisted of trimethoprim-sulfamethoxazole (TMP-SMX) and intravenous corticosteroid administration, and concomitant immunosuppression was temporarily reduced or withdrawn. Outcome was generally good. None of the patients developed respiratory insufficiency or required mechanical ventilation. One patient died as a result of sepsis, and 3 more with preexisting advanced chronic kidney disease subsequently lost their grafts.ConclusionRenal transplant recipients are at risk of late-onset PCP, even at a steady state of low-dose maintenance immunosuppression. Because of its subtle clinical presentation, high suspicion of the disease is warranted. Its early recognition and proper management are essential for a successful outcome.     

Determinants of Parathyroid Hormone Levels During the First Year After Kidney Transplantation

BackgroundSpontaneous remission of secondary hyperparathyroidism after kidney transplantation requires time to occur. The aim of the present study was to investigate factors that may be related to the reduction of parathyroid hormone (PTH) after transplantation as well as the rate of its reduction.MethodsWe studied 81 kidney transplant recipients at our transplantation center between January 2014 and September 2017. The relationship of PTH values during the first year after transplant with renal function, type of kidney graft origin (deceased or living), and delayed renal graft function was examined. Moreover, we determined the correlation of the rate of PTH reduction within the first year with the value of PTH before transplant.ResultsOf the total of 81 recipients, 28 (35.1%) were women and 53 (64.8%) were men, with a mean age of 47 ± 11.87 years. At the same time, there was a decrease of PTH by 33% in the first half of the first year after transplantation and by 57% in the second. In addition, a statistically significant correlation of PTH with renal function was found (P = .001), with PTH values decreasing as the glomerular filtration rate increased. Finally, transplants from deceased donors were associated with higher values of PTH, whereas the value of PTH before transplant was positively correlated with the value after it (P = .001).ConclusionsSecondary hyperparathyroidism, which accompanies end-stage chronic renal failure, usually resolves adequately after transplantation. The determinants of this resolution are the recipient's renal function, the kidney graft origin (deceased), and the pretransplant PTH values.     

A Randomized Controlled Trial of Late Conversion from CNI-Based to Sirolimus-Based Immunosuppression Following Renal Transplantation

Maintenance immunosuppression with calcineurin inhibitors (CNIs) following renal transplantation is associated with nephrotoxicity and accelerated graft loss. We aimed to assess whether conversion to sirolimus-based immunosuppression would affect the progression of renal impairment. In this single center, randomized controlled trial, 40 renal transplant recipients between 6 months and 8 years post-transplant were randomly assigned to remain on their CNI (cyclosporin or tacrolimus) or to switch to sirolimus. The primary outcome measure was change in glomerular filtration rate (GFR) measurement at 12 months. Analysis was by intention-to-treat. Of the 40 patients randomized, 2 patients never took the study drugs and were excluded, leaving 19 patients per group. There was a significant change in GFR at 12 months following conversion to sirolimus (12.9 mL/min, 95% CI 6.1-19.7; p < 0.001). Following conversion, the principal adverse events were the development of rashes (68%), particularly acne, and mouth ulcers (32%). No patient in either group experienced an acute rejection episode. In renal transplant recipients, a change in maintenance therapy from CNIs to sirolimus is associated with significant improvement in GFR at 12 months.     

Couples After Renal Transplantation: Impact of Sex and Relationship Quality on Adherence in a Prospective Study

BackgroundIn patients after kidney transplantation, nonadherence to immunosuppressant medication is a common problem. Identifying factors that influence adherence could optimize medical care and prevent nonadherence. Kidney transplantation is a stressful situation for the patient and also for the relatives. The recipients of renal transplants as well as the family system have to be taken into account as potential impact factors.MethodsFifty-six couples with a renal transplant recipient were investigated regarding adherence, relationship satisfaction, social support, and quality of life. Moreover, sex and role differences (patient vs partner) as well as differences within the couple were analyzed. Impact factors on adherence were identified.ResultsFemale recipients of renal transplant reported higher relationship satisfaction than male recipients, female spouses, and male spouses. Physical quality of life was lower in renal transplant recipients compared with caregivers. For male renal transplant recipients, significant predictors of adherence, such as social support, relationship quality, and quality of life emerged, whereas for female renal transplant recipients mental quality of life and education level were found to influence adherence.ConclusionsThe study reveals the importance of relationship functioning of couples after kidney transplantation, as well as considering sex and role differences. There is a need to examine the posttransplantation nonadherence risk profile of women and men separately.