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Biomedical subjects

Pranatharthi Chandrasekar

Publications and source records attributed to Pranatharthi Chandrasekar.

2 recordsLinked to original sources

A double-blind, randomized, controlled trial of amphotericin B colloidal dispersion versus amphotericin B for treatment of invasive aspergillosis in immunocompromised patients.

We report a randomized, double-blind, multicenter trial in which amphotericin B colloidal dispersion (ABCD [Amphotec]; 6 mg/kg/day) was compared with amphotericin B (AmB; 1.0-1.5 mg/kg/day) for the treatment of invasive aspergillosis in 174 patients. For evaluable patients in the ABCD and AmB treatment groups, respective rates of therapeutic response (52% vs. 51%; P=1.0), mortality (36% vs. 45%; P=.4), and death due to fungal infection (32% vs. 26%; P=.7) were similar. Renal toxicity was lower (25% vs. 49%; P=.002) and the median time to onset of nephrotoxicity was longer (301 vs. 22 days; P<.001) in patients treated with ABCD. Rates of drug-related toxicity in patients receiving ABCD and AmB, respectively, were 53% versus 30% (chills), 27% versus 16% (fever), 1% versus 4% (hypoxia) and 22% versus 24% (toxicity requiring study drug discontinuation). ABCD appears to have equivalent efficacy and superior renal safety, compared with AmB, in the treatment of invasive aspergillosis. However, infusion-related chills and fever occurred more frequently in patients receiving ABCD than in those receiving AmB.

Adolescent↗

Polymicrobial candidemia.

We conducted a retrospective review of the clinical data on patients with polymicrobial candidemia during a nine-year period (1992-2000) at our tertiary care University Hospital. Also, the clinical features of patients with polymicrobial vs monomicrobial candidemia were compared. There were 16 (5.2%) patients with multiple candidal species in blood among 303 patients with candidemia. Patients' age varied from 21-85 years (median 52 years); they had serious underlying co-morbidities with prolonged hospitalization (median duration 13 days); all had intravenous vascular catheters, had been exposed to multiple antibiotics and were heavily colonized with Candida. Concomitant serious bacterial infections were common (56%). Candida albicans was isolated from blood in 11 of 16 patients; other species were C. glabrata (7 patients), C. tropicalis (6 patients) and C. parapsilosis (4 patients). Sixty seven percent (8 of 12) patients had causative Candida species isolated from vascular catheter tip culture. Polymicrobial candidemia occurred in sicker, non-oncologic patients with frequent concomitant bacterial infections, as compared to those with monomicrobial candidemia. Crude mortality was 43%, a rate similar to that seen with monomicrobial candidemia. Polymicrobial candidemia is uncommon, seen in hospitalized patients with multiple co-morbidities and heavy candidal colonization; removal of vascular catheter and institution of antifungal therapy are important therapeutic maneuvers.

Antifungal Agents↗