Prospective randomized comparison of two prophylactic regimens with trimethoprim-sulfamethoxazole in leukemic...

Area of Science:

• Pediatric Oncology
• Infectious Disease Prevention
• Pharmacology

Background:

• Children with acute hematologic malignancy are at high risk for opportunistic infections like interstitial pneumonia.
• Prophylaxis with trimethoprim-sulfamethoxazole is commonly used to prevent these infections.

Purpose of the Study:

• To compare the efficacy and toxicity of continuous versus intermittent trimethoprim-sulfamethoxazole prophylaxis in children with acute hematologic malignancy.
• To determine if an intermittent regimen is as effective and less toxic than a continuous regimen.

Main Methods:

• A randomized trial was conducted between July 1984 and June 1986.
• Children received either continuous or intermittent (3 days/week) trimethoprim-sulfamethoxazole prophylaxis.
• Outcomes assessed included severe infections, side-effects, and compliance.

Main Results:

• The incidence of severe infections was similar between the continuous (17) and intermittent (21) groups.
• The number of reported side-effects was also comparable (continuous: 30; intermittent: 34).
• Patient compliance was similar across both treatment arms.

Conclusions:

• Neither continuous nor intermittent trimethoprim-sulfamethoxazole prophylaxis demonstrated superior efficacy or safety in this pediatric population.
• The selection of prophylaxis regimen should be guided by cost-effectiveness and individual patient/parental preferences to ensure optimal compliance.