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Prospective study on fungemia in children with cancer: analysis of 35 cases and comparison with 130 fungemias in adults.

The aim of this prospective study on fungemia in children with cancer compared with adults with cancer appearing during the last 10 years in a pediatric hospital and in national cancer institutions was to investigate risk factors, etiology, therapy, complications and outcome. Univariate analysis showed significant differences in 35 children with cancer and fungemia in comparison with 130 cases of fungemias in adults with cancer. It was found that (1) therapy with corticosteroids (40 vs 18.5%, P<0.03), (2) breakthrough fungemia during ketoconazole prophylaxis (20 vs 7.7%, P<0.025), and (3) meningitis as a complication of fungemia (11.4 vs 0.8%, P< 0.001) occurred more frequently in the pediatric subgroup with fungemia. Candida albicans was more common as the causative agent of fungemia among adults (58.5 vs 37.1, P<0.02) than in children. However, mortality was similar in children with cancer and in adults with cancer and fungemia (31.4 vs 23.1%, NS). Comparison of risk factors revealed no differences between adults and children with cancer and fungemia except in etiology, breakthrough fungemia during prophylaxis with ketoconazole, prior therapy with corticosteroids and meningitis as a complication. The outcome was also similar in pediatric and adult cancer patients with fungal bloodstream infection.

Adolescent↗

[A study of postmortem infectious lesions of bacteremia and fungemia patients--relationship between fungemia and deep mycoses].

Postmortem infectious lesions were analyzed in 63 patients with bacteremia and fungemia. Bacterial infection was found in 36 patients, deep mycoses in 27 and cytomegalovirus infection in 7. Among deep mycoses patients, yeast was noticed in 17, Aspergillus in 13 and Mucor in one. Infectious lesions were not observed in 10 cases. Fifteen cases of 23 leukopenic patients were complicated with deep mycoses. Deep mycoses was noticed in 43% of bacteremia and fungemia patients, but not in candicemia patients. Fungemia due to Candida was related to blood access, however, not to deep mycoses. On the other hand, disseminated mycoses was found in 4 of 5 cases with Trichosporon beigelii fungemia. T. beigelii infection is noticeably life-threatening to the immunocompromised host.

Adolescent↗

Seminational surveillance of fungemia in Denmark: notably high rates of fungemia and numbers of isolates with reduced azole susceptibility.

The aim of this study was to present the first set of comprehensive data on fungemia in Denmark including the distribution of species and range of susceptibility to major antifungal compounds based on a seminational surveillance study initiated in 2003. The catchment area of the participating hospitals had a population of 2.8 million, or 53% of the Danish population. A total of 303 episodes of fungemia were registered (annual rate, 11 of 100,000 people or 0.49 of 1,000 hospital discharges). Candida species accounted for 97.4% of the fungal pathogens. C. albicans was the predominant species (63%), but the proportion varied from 57% to 72% among participating departments of clinical microbiology. C. glabrata was the second most frequent species (20%; range, 8% to 32%). C. krusei was a rare isolate (3%) and occurred only at two of the participating hospitals. Retrospective data retrieved from the Danish laboratory systems documented a continuous increase of candidemia cases since the early 1990s. For the 272 susceptibility-tested isolates, MICs of amphotericin B and caspofungin were within the limits expected for the species or genus. However, decreased azole susceptibility, defined as a fluconazole MIC of >8 microg/ml and/or itraconazole MIC of >0.125 microg/ml, was detected for 11 Candida isolates that were neither C. glabrata nor C. krusei. Including intrinsically resistant fungi, we detected decreased susceptibility to fluconazole and/or itraconazole in 87 (32%) current Danish bloodstream fungal isolates. We showed a continuous increase of fungemia in Denmark and an annual rate in 2003 to 2004 higher than in most other countries. The proportion of bloodstream fungal isolates with reduced susceptibility to fluconazole and/or itraconazole was also notably high.

Adolescent↗

[A multicenter study on fungemia caused by yeasts in Spain (April-June, 1997). A Work Group to Study Fungemia)].

Yeast fungemia has increased markedly in the last few years. Currently, Candida spp. is one of the microorganisms recovered most frequently from blood cultures. To better know the prevalence of yeast fungemia in our country we conducted a cross-sectional study with yeasts recovered from blood cultures obtained during a 3-month period from 39 hospitals in the Spanish public health hospital net. A total of 153 yeasts were recovered (59 were C. albicans, 53 C. parapsilosis, and 41 other species of yeasts). The percentage of males was 64.1. Mean age was 50.8 years. Factors associated with the appearance of fungemia were previous antibiotic therapy (83.7%), venous catheter (66%), previous bacterial infections (47.7%), and parenteral nutrition (40.5%). The recovery of C. albicans was independently associated with the admission to ICU, PDA and presence of urological/renal disease; C. parapsilosis was independently associated with the presence of hematological disease. The susceptibility studies of these strains recovered from blood cultures showed that in vitro resistance to amphotericin B and 5-fluorocytosine are practically nonexistent and that resistance to azole compounds is low. Multicentric epidemiologic studies are still necessary in this field of Microbiology.

Adult↗

Catheter-associated fungemia due to Exophiala oligosperma in a leukemic child and review of fungemia cases caused by Exophiala species.

A case of catheter-associated fungemia due to Exophiala oligosperma in a 3-year-old leukemic child is presented. The etiologic agent was isolated from blood specimens and the catheter tip. The isolate was identified by its morphological characteristics and DNA sequencing of the internal transcribed spacer region of rDNA. Despite initial amphotericin B and itraconazole therapy, the child's fever subsided only after removal of the catheter. A review of the medical literature revealed 29 cases of infection due to Exophiala species. Twenty-three of these 29 patients had a CVC in place when they developed fever or other manifestations of fungemia. Withdrawal of the CVC together with amphotericin B and/or itraconazole therapy generally resulted in a good prognosis.

Catheterization, Central Venous↗

Candida krusei fungemia. An escalating serious infection in immunocompromised patients.

BACKGROUND: Candida krusei is inherently resistant to fluconazole and is emerging as a frequent cause of fungemia in patients with hematologic malignant neoplasms. OBJECTIVE: To determine the risk and prognostic factors associated with C krusei fungemia in comparison with Candida albicans fungemia in patients with cancer. METHODS: Retrospective study of 57 cases of C krusei fungemia occurring at the M. D. Anderson Cancer Center, Houston, Tex, from 1989 to 1996. The C krusei cases were compared with 57 cases of C albicans fungemia with respect to demographics, underlying cancer, Acute Physiology and Chronic Health Evaluation II score, immunosuppression status, chemotherapy, and the use of central venous catheters, as well as fluconazole prophylaxis. RESULTS: At our institution, C krusei accounted for 5% of fungemias during 1989 through 1992 and for 10% during 1993 through 1996. Patients with C krusei fungemia more often had leukemia than patients with C albicans (77% vs 11%; P =.02), whereas catheter-related infections were more common among patients with C albicans fungemia (42% vs 0%; P<.001). Patients with C krusei fungemia had a lower response rate (51% vs 69%; P =.05), largely because they more frequently were neutropenic and had disseminated infection. Mortality related to fungemia was 49% in the cases with C krusei vs 28% in C albicans. Multiple logistic regression analysis showed that persistent neutropenia (P =.02) and septic shock (P =.002) were predictors of poor prognosis. CONCLUSION: In neutropenic patients, C krusei fungemia is associated with high mortality. It should be suspected in patients with leukemia who are receiving fluconazole prophylaxis and should be treated aggressively with an amphotericin B regimen.

Adolescent↗

Fungemia in the immunocompromised host. Changing patterns, antigenemia, high mortality.

Fungemias were reviewed in 110 immunocompromised patients hospitalized between November 1, 1974, and December 31, 1977, a Memorial Sloan-Kettering Cancer Center (MSKCC). The incidence of Candida tropicalis fungemia increased each year. Seventy-six percent of the patients with C. tropicalis fungemia and 32.5 percent of those with C. albicans fungemia had either leukemia or lymphoma. Seventy-seven percent of the C. parapsilosis fungemias were related to total parenteral nutrition. Thirty-seven percent of the patients with C. albicans fungemia were receiving oral prophylactic nystatin therapy. The source of fungemia was often difficult to determine: in 60 percent of the patients, only blood cultures were positive for C. tropicalis or Torulopsis glabrata; no cultures were positive for the fungus from any other site before the episode occurred. Serologic tests, including a highly sensitive passive hemagglutination test, showed fourfold increases in titer only inconsistently. A passive hemagglutination-inhibition test for circulating antigen was positive in 50.9 percent of 57 patients with fungemia who were tested and may be a valid indication for treatment. Fungemia usually represented a severe and often fatal disease. The over-all mortality of the 110 patients with fungemia was 79 percent whereas only 23 percent of the patients with C. parapsilosis fungemia died. Among the patients who received more than 200 mg of amphotericin B, 71 percent died despite treatment.

Antigens, Fungal↗

The yeast species causing fungemia at a university hospital in Riyadh, Saudi Arabia, during a 10-year period.

This study is a retrospective investigation to determine the species of yeasts causing fungemia in a university hospital in Saudi Arabia during the years 1991-2000. A total of 189 episodes of fungemia were encountered, of which 121 (64%) occurred during 1991-1995, whereas only 68 cases (36%) were found between 1996 and 2000. Overall, 50.3% episodes were due to Candida albicans including five episodes of C. dubliniensis, followed by C. tropicalis (27%), C. parapsilosis (7.9%), C. glabrata (7.4%), C. krusei (3.2%), C. famata (1.0%); 3.2% were due to other species, namely Blastoschizomyces capitatus, Hansenula anomala, Rhodotorula rubra, and Trichosporon beigelii. The percentage of episodes of fungemia caused by C. albicans ranged from 36.4% in 1991 to 71.4% in 2000, revealing an increase in recent years. The incidence of non-C. albicans fungemia decreased from 63 (33.3%) during the first 5 years (1991-1995) to 31 (16.4%) episodes during the second 5 years. Moreover, no fungemia due to C. glabrata and C. krusei were observed during the last 3 years. Overall, during the years of the study, a decreasing incidence of yeast fungemia was observed. Fungemia occurred more frequently in patients with leukemia (24%), prematurity (16%), postsurgery (10.6%), and lymphoma (9.5%). Patients with respiratory infections and preterm infants more often had C. albicans fungemia, whereas C. tropicalis predominated in patients with hepatic disorders and leukemia. The study reports for the first time the involvement of C. dubliniensis in yeast fungemia occurring in Saudi Arabia.

Adolescent↗

Persistent fungemia--risk factors and outcome in 40 episodes.

The aim of this multicenter survey was to assess risk factors and mortality in patients with persistent fungemia (PF). Cases of persistent fungemia, defined as positive blood culture for at least 3 causative days of antifungal therapy were selected. Forty cases of persistent fungemia (lasting more than 3 days) were compared with 270 non-persistent fungemias appearing within the same period, and analyzed by univariate and multivariate analysis for risk factors and outcome. The median number of days of positive culture was 4.4 (3 - 20): 22 episodes were due to Candida albicans, 1 due to non-albicans Candida spp., 6 episodes due to non-Candida spp. Yeasts: 15 were catheter related, 16 patients had yeast-infected surgical wounds, 12 were neutropenic, 4 cases were caused by species resistant in vitro, 2 to amphotericin B (Trichosporon spp.) and 2 to fluconazole (C. laurentii, C. glabrata). Fifteen patients (37.5%) died, 7 of whom due to fungemia. Nineteen cases had one known risk factor (10 had infected wound, 4 infected vascular catheter, 3 were neutropenic and 2 had inappropriate therapy). Fourteen cases had two known risk factors (4 had wound and infected catheter, 4 neutropenia and infected catheter, 2 neutropenia and resistant organism, 4 other combinations. Two cases had 3 known risk factors and one had 4 risk factors for persistent fungemia. Artificial ventilation, C. glabrata etiology, non-Candida spp. yeasts such as Trichosporon spp. and Cryptococcus spp. and prior surgery were significantly associated with persistent fungemia in univariate, whereas only C. glabrata etiology in multivariate analysis. Breakthrough fungemia during empiric therapy with fluconazole was also observed more frequently in patients with persistent fungemia. However, there was no difference in both attributable and overall mortality between both groups.

Aged↗

Candida parapsilosis fungemia in cancer patients--incidence, risk factors and outcome.

The paper presents an analysis of fungemia cases which were caused by C. parapsilosis in a cancer center within 10 years, with the aim to compare risk factors and the outcome with fungemias caused by C. albicans and other non-albicans Candida spp. fungemias. Before 1990 (1988-1989) in our institutes C. parapsilosis fungemias were not observed at all. During 1990-1997, the proportion of C. parapsilosis among fungemias increased, in 1990-1993 from 0% to 7.1% in 1996-1997 to 14.2-15%. It represents 25% out of non-albicans Candida spp. fungemias and 7.9% out of all fungemias and is the third commonest pathogen after C. albicans (50.5%) and C. krusei (9.9%). Two from eight (25%) C. parapsilosis fungemias were breakthroughs, one appeared during prophylaxis with ketoconazol and one with fluconazol. Considering the proportion of C. parapsilosis among blood cultures, 13 of 170 blood cultures contained C. parapsilosis (6.6% among all yeasts from blood cultures). C. parapsilosis was the second commonest fungal organism isolated from blood cultures (after C. albicans) in our cancer center. Infected vascular catheters were surprisingly not the major risk factor: central venous catheters were documented as a source in two cases only. The commonest risk factors were similar to those occurring with other fungemias--such as preceding antimicrobial therapy (62.5%), neutropenia (50%) and prior prophylaxis with azoles.

Adult↗

A retrospective Evaluation of fluconazole for the treatment of Candida glabrata fungemia.

BACKGROUND: Candida glabrata accounts for 21% of Candida bloodstream isolates in the United States and ranges from susceptible-dose-dependent to resistant to fluconazole. A fluconazole dose of 800 mg/d ( approximately 12 mg/kg per day) is predicted to produce peak plasma concentrations that surpass the susceptible-dose-dependent MIC breakpoint of 16 to 32 mug/mL. Accordingly, the Infectious Diseases Society of America treatment guidelines for candidiasis recommend fluconazole 12 mg/kg per day as an alternative option for treatment of C glabrata fungemia. OBJECTIVE: The main objective of this study was to evaluate fluconazole retrospectively as a treatment for C glabrata fungemia. METHODS: Data were collected through a database that stores patient information electronically and can be accessed and queried, and chart review at Barnes-Jewish Hospital (St. Louis, Missouri) from January 1999 to August 2002. Eligible patients who had at least 1 positive blood culture for C glabrata and received at least 1 dose of fluconazole were identified through the electronic query. Chart reviews of these patients followed. The primary outcomes were fungemia eradication and in-hospital mortality. RESULTS: Of the total 124 cases of C glabrata fungemia identified, 54 patient charts were evaluable. Chart review revealed that 65% (17/26) of patients receiving fluconazole as the sole antifungal therapy had successful bloodstream eradication of C glabrata, whereas approximately 54% (15/28) of patients who were changed from fluconazole to an amphotericin B formulation had successful bloodstream eradication. Although no association was found between fluconazole dose and fungemia eradication in the entire study population, higher doses of fluconazole (> or =400 mg/d) were more likely to achieve fungemia eradication than lower doses (< or =400 mg/d) in the subset of patients who received only fluconazole (P = 0.042). Mortality rates were approximately 24% (4/17) and 40% (6/15) in patients having successful bloodstream eradication with fluconazole alone and with fluconazole followed by amphotericin B, respectively, compared with 38% (3/8) in patients with persistent fungemia who received fluconazole alone. CONCLUSIONS: Fluconazole was a viable therapy for C glabrata fungemia, with bloodstream eradication in 65% of patients and mortality rates of 24% to 40% in this retrospective chart review.

Algorithms↗

Risk Factors for Candida tropicalis fungemia in patients with cancer.

The risk factors for and presentation of Candida tropicalis fungemia, in comparison with those of Candida albicans, have been incompletely characterized. We compared 43 cases of C. tropicalis fungemia with 148 cases of C. albicans fungemia. In univariate analysis, patients with C. tropicalis fungemia were more likely to have leukemia (P=.0006), prolonged neutropenia (P=.03), and a positive blood culture for more days (P=.02). The 2 groups did not differ with regard to baseline Acute Physiology and Chronic Health Evaluation (APACHE) II score, frequency of catheter-associated fungemia, or response to antifungals. In multivariate analysis, patients with C. tropicalis fungemia were more likely to have leukemia (P=.02), previous neutropenia (P=.002), and a longer stay in the intensive care unit during the infectious episode (P=.01). Also, the response of the breakthrough C. tropicalis fungemia was lower (P=.05). In conclusion, the host determinants associated with susceptibility to C. tropicalis are leukemia and prolonged neutropenia.

Adolescent↗

Candida fungemia in neonates treated with fluconazole: report of forty cases, including eight with meningitis.

PURPOSE OF THE STUDY: To assess efficacy and safety of fluconazole in neonates with Candida fungemia. STUDY DESIGN: Multicenter prospective protocol of all fungemias appearing between January 1, 1993, and December 31, 1997, in four major university hospitals. RESULTS: Forty neonates, 28 of them with very low birth weight (<1500 g; 30.5 median gestation week), with documented Candida albicans fungemia were treated with intravenous fluconazole in a daily dosage of 6 mg/kg once daily for 6 to 48 days. Thirty-four received fluconazole as monotherapy and 6 received it in combination with amphotericin B. Thirty-two (80%) were cured; 4 of them relapsed despite at least 14 days of therapy, but they were ultimately cured without sequelae. Eight other neonates died, 4 because of fungal infection and 4 because of prematurity or hemorrhage or lung failure, with fungemia (20% overall and 10% attributable mortality). Two neonates had elevated liver enzymes during fluconazole therapy and 2 others had elevated serum creatinine during fluconazole monotherapy. In none of them did these abnormalities necessitate discontinuation of antifungal therapy. In 8 neonates fungal meningitis developed as a complication of fungemia. All but 3 fungemias were C. albicans; 3 were Candida parapsilosis. CONCLUSIONS: Fluconazole was safe and effective antifungal therapy even in complicated or Candida fungemia in neonates and in infants with very low birth weight.

Antifungal Agents↗

[Clinical analysis on 127 cases of fungemia in Fukuoka University Hospital between 1984 and 1994].

A clinical analysis on 127 cases out of 140 cases presenting with fungemia at Fukuoka University Hospital between 1984 and 1994 was done. The number of the positive blood cultures during the same period was 1188 and the rate of fungemia was 11.8%. The rates generally increased in recent years, 9.0% (1984-1986), 10.2% (1987-1989) and 13.6% (1990-1994), but decreased after 1992. C. albicans has shown a tendency to decrease while C. parapsilosis and C. glabrata have increased in recent years thus suggesting the effect of the prevalence of intravenous hyperalimentation (IVH) and azole antifungal agents. Only 3.9% of the fungemia were preceded by bacteremia. In addition to the known risk factors for fungemia such as IVH (89.0%) and the antibacterial agents, H2-receptor antagonists were used in 58.3% of the cases. 14 cases of the fungemia were observed during the prophylactic use of antifungal drugs. Therefore, fungemia should always be kept in mind regarding the differential diagnosis for bacteremia when an indwelling venous catheter is used. The prompt extubation of the catheter in addition to the adjustment of the dosage of antifungal drugs in response to the status of the host defense system are thus considered to be important in the treatment of fungemia.

Adolescent↗

Measurement of serum D-arabinitol/creatinine ratios for initial diagnosis and for predicting outcome in an unselected, population-based sample of patients with Candida fungemia.

D-Arabinitol (DA) is a useful diagnostic marker for candidiasis in patients with neutropenia and other high-risk groups, but its use in unselected patients with a broad range of underlying diseases and conditions has not been studied. We used an automated enzymatic fluorometric assay to measure serum DA/creatinine ratios (DA/cr's) in 30 healthy adults, 100 hospitalized controls without Candida fungemia, and 83 patients from a study of all Candida fungemias in Connecticut between October 1998 and September 1999. Sixty-three of 83 (76%) fungemic patients and 11 of 100 (11%) nonfungemic controls had serum DA/cr's >or=3.9 microM/mg/dl (mean + 3 standard deviations for 30 healthy adults). High serum DA/cr's were less frequent in patients with cancer or fungemia caused by the DA nonproducer Candida glabrata than in patients with cancer or fungemia caused by a DA producer, C. albicans, C. tropicalis, or C. parapsilosis. The serum DA/cr was first >or=3.9 microM/mg/dl before, on the same day as, or after the first positive blood culture was drawn for 30 (36%), 22 (27%), and 11 (13%) fungemia patients, respectively. Mortality did not differ significantly among the patients with high or normal initial or peak serum DA/cr's, but mortality was higher if any serum DA/cr value was >or=3.9 microM/mg/dl 3 or more days after the onset of fungemia (18/27 versus 4/24 patients, respectively; P < 0.001). We conclude that serum DA/cr's are useful both for the initial diagnosis of Candida fungemia and for prognostic purposes for unselected patients with a broad range of underlying diseases and conditions.

Adolescent↗

Electrophoretic karyotype analysis of sequential Candida parapsilosis isolates from patients with persistent or pecurrent fungemia.

We assessed the genetic relatedness of sequential isolates of Candida parapsilosis during persistent or recurrent fungemia and the effect of central venous catheter (CVC) removal. Serial isolates of C. parapsilosis were obtained from 17 patients with persistent or recurrent fungemia over periods of up to 5 months. Forty-eight C. parapsilosis isolates from the blood of 17 patients were analyzed by electrophoretic karyotyping (EK) with pulsed-field gel electrophoresis (PFGE), revealing 25 different karyotypes. The strains sequentially isolated from each of seven patients whose fungemia resolved following CVC removal had the same karyotype. Two patients with fungemia that cleared without CVC removal each had two sequential isolates with different karyotypes. In six (75%) of the eight patients whose fungemia was recurrent even after CVC removal, the karyotypes of the pre- and post-CVC removal isolates were different, implying the emergence of a new strain. Overall, the sequential strains from each patient had identical karyotypes in 53% (9 of 17) of the patients and two different karyotypes in 47% (8 of 17). This study shows that EK with PFGE is useful for investigating persistent or recurrent fungemia due to C. parapsilosis and that recurrent fungemia due to C. parapsilosis is more likely caused by reinfection with a second strain.

Adult↗

[Background and prognostic factors of fungemia in patients with hematological disease].

Sixty-two episodes of fungemia which occurred in patients with hematological disorders between 1976 and 1996 in our hospital were analyzed with respect to background and prognostic factors. Forty-four of the patients were male and 18 were female. The underlying diseases were acute leukemia in 36 cases, chronic myelogenous leukemia in 9, malignant lymphoma in 9 and others in 8 cases. Trichosporon beigelii and Candida tropicalis were the most frequently isolated fungal pathogens. The prevalence of C. crusei increased while that of C. albicans decreased after 1988. Fuungemia frequently occurred in patients with following factors: 1) advanced disease, such as relapse of acute leukemia or malignant lymphoma or blast crisis of chronic myelogenous leukemia; 2) neutrophil count less than 100/microliter; 3) administration of antibiotics; 4) focal infection, gastrointestinal hemorrhage or urinary catheterization; and 5) isolation of causative organisms from surveillance cultures obtained just before the onset of fungemia. The mortality rate of patients with fungemia was 74%. Absence of hypotension, increased neutrophil count for a week after the onset of fungemia, and the intravenous administration of Amphotericin B (AMPH) were good prognostic factors. Fungemia frequently occurred in patients with advanced disease and had a very poor prognosis. These results emphasized the importance of isolation of fungus from surveillance cultures, early initiation of AMPH administration, and attempts to increase neutrophil counts with G-CSF and other measures for improving the prognosis of fungemia in patients with hematological disorders.

Adolescent↗

Nosocomial Candida krusei fungemia in cancer patients: report of 10 cases and review.

The risk factors, therapy and outcome of ten cases of fungemia due to Candida krusei, appearing during the last 10 years in a single national cancer institution, are analyzed. Univariate analyses did not find any specific risk factors in comparison to 51 Candida albicans fungemias appearing at the same institution and with a similar antibiotic policy. Association with prior fluconazole prophylaxis was not confirmed because only one case appeared in a patient previously treated with fluconazole. However, attributable and crude mortality due to C. krusei fungemias was higher than for C. albicans fungemia. The authors review 172 C. krusei fungemias published within the last 10 years to compare with the incidence, therapy and outcome of C. krusei fungemia from our cancer institute.

Adult↗