Which medication is recommended for daily prophylaxis against Pneumocystis jirovecii in AIDS patients?

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Multiple Choice

Which medication is recommended for daily prophylaxis against Pneumocystis jirovecii in AIDS patients?

Maintaining protection against Pneumocystis jirovecii pneumonia in AIDS patients hinges on keeping a steady, ongoing level of suppression when the immune system is severely compromised (often with a CD4 count below 200). The medication of choice for daily prophylaxis is co-trimoxazole (trimethoprim-sulfamethoxazole) because it reliably prevents PCP and also provides protection against certain other opportunistic infections that can occur with advanced immunosuppression. The daily regimen of TMP-SMX is well-supported by evidence for reducing PCP risk and is preferred unless there are contraindications or intolerance. The other drugs listed target different pathogens: azithromycin is used for Mycobacterium avium complex prophylaxis in those with very low CD4 counts, acyclovir prevents herpesviruses, and fluconazole prevents candidiasis. None are the standard first-line prophylaxis for PCP, which is why co-trimoxazole is the best answer for daily PCP prevention.

Maintaining protection against Pneumocystis jirovecii pneumonia in AIDS patients hinges on keeping a steady, ongoing level of suppression when the immune system is severely compromised (often with a CD4 count below 200). The medication of choice for daily prophylaxis is co-trimoxazole (trimethoprim-sulfamethoxazole) because it reliably prevents PCP and also provides protection against certain other opportunistic infections that can occur with advanced immunosuppression. The daily regimen of TMP-SMX is well-supported by evidence for reducing PCP risk and is preferred unless there are contraindications or intolerance.

The other drugs listed target different pathogens: azithromycin is used for Mycobacterium avium complex prophylaxis in those with very low CD4 counts, acyclovir prevents herpesviruses, and fluconazole prevents candidiasis. None are the standard first-line prophylaxis for PCP, which is why co-trimoxazole is the best answer for daily PCP prevention.

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