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Candiduria in renal transplant recipients: incidence, clinical repercussion, and treatment indication
1Nephrology Department, Hospital Clínico San Carlos, Madrid, Spain. jdelgadodominguez@gmail.com
Introduction:
The incidence of candiduria in renal transplant recipients is unknown. In clinical practice, the indications for antifungal therapy are not well established. Furthermore, there is the problem of the choice of the antifungal drug since some of them may select resistant Candida species, or interact with immunosuppressive agents or only be used intravenously.
Aim:
We sought to study the incidence, clinical repercussions and effectiveness of antifungal treatment to prevent recurrence of candiduria.
Materials And Methods:
We examined all episodes of Candida-positive urine cultures (>50,000 cfu/mL) in 996 recipients over 2 years. We considered the Candida species, administered treatment, presence of fever, requirement for hospital admission versus outpatient case, occurrence of simultaneous bacterial urinary tract infection (UTI), antibiotic use during the week before candiduria, and presence of an indwelling urinary catheter.
Results:
Among 996 subjects, 34 displayed 83 episodes of candiduria, yielding an accumulated incidence of 3.4% after 2 years. The frequency was higher among women (6.3% vs 1.7%, P<.001). Of the 45 outpatient episodes (54.2%), 17 were treated and one required hospitalization (5.9%). Of the 28 nontreated outpatients, two were hospitalized (7.1%, P=.68 vs treated patients). All cases of hospital admission presented simultaneous bacterial UTI, none developed candidemia, and two patients did not receive any antifungal therapy. With respect to the first episodes of each patient (n=34), 5/11 treated (45.5%) and 4/23 untreated (17.4%) patients developed recurrences (P=.095). Selection of more resistant Candida species was not observed. Fifty cases (60%) were associated with antibiotic therapy and 34 (41%) the presence of a urinary catheter.
Conclusions:
It does not seem necessary to treat candiduria in this setting. Antifungal therapy was not associated with either a reduction in recurrence or the appearance of more resistant species in this study. We observed no important clinical repercussions.
Insights
Treating candiduria in renal transplant recipients is not necessary. Antifungal therapy did not reduce recurrence or lead to resistant Candida species, with no significant clinical repercussions observed.
Area of Science:
- Nephrology
- Infectious Diseases
- Clinical Pharmacy
Background:
- The incidence and management of candiduria in renal transplant recipients are not well-defined.
- Current antifungal treatment guidelines lack clarity, posing challenges in drug selection due to potential resistance, drug interactions with immunosuppressants, and administration route limitations.
Purpose of the Study:
- To investigate the incidence of candiduria in renal transplant recipients.
- To evaluate the clinical impact and effectiveness of antifungal treatment in preventing candiduria recurrence.
Main Methods:
- A 2-year study of 996 renal transplant recipients.
- Analysis of Candida-positive urine cultures (>50,000 cfu/mL), species, treatment, and clinical factors including fever, hospitalization, bacterial UTI, antibiotic use, and urinary catheter presence.
Main Results:
- Accumulated incidence of candiduria was 3.4% (83 episodes in 34 patients).
- Higher incidence observed in women (6.3% vs 1.7%).
- Antifungal treatment did not significantly reduce recurrence rates (45.5% treated vs 17.4% untreated) and did not select for resistant Candida species. No significant clinical repercussions were noted.
Conclusions:
- Routine antifungal treatment for candiduria in renal transplant recipients appears unnecessary.
- Antifungal therapy showed no benefit in reducing recurrence or preventing resistant species development.
- No significant clinical repercussions were associated with candiduria in this patient cohort.
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