View clinical trials related to Pneumonia, Pneumocystis Carinii.
Filter by:To evaluate the efficacy of WR 6026 once daily in the treatment of mild PCP. To evaluate the safety and tolerance of WR 6026. To assess the correlation between plasma WR 6026 concentrations and outcome/toxicity.
To determine whether gradual initiation of sulfamethoxazole/trimethoprim (SMX/TMP) reduces the incidence of treatment-limiting adverse reactions compared to the routine initiation of the drugs for Pneumocystis carinii pneumonia (PCP) prophylaxis in HIV-infected patients. Although a number of clinical trials have demonstrated the superiority of SMX/TMP for PCP prophylaxis, the incidence of adverse reactions to this medication is high. In a pilot study in which patients were initiated with SMX/TMP prophylaxis by gradually increasing the dose over 2 weeks, no significant adverse reactions have occurred.
This study compares 2 different treatments administered to try to prevent serious bacterial infections (such as pneumonia) in HIV-positive children. A combination of drugs (azithromycin plus atovaquone) will be compared to sulfamethoxazole-trimethoprim (SMX/TMP) alone. This study also evaluates the long-term safety and tolerance of these different drugs. SMX/TMP is a commonly prescribed drug for the prevention of bacterial infections. However, the combination of azithromycin and atovaquone may be safer and more effective than SMX/TMP. This study compares the 2 treatments.
To compare the efficacy and safety of dapsone versus atovaquone in preventing or delaying the onset of histologically proven or probable Pneumocystis carinii pneumonia in HIV-infected patients with CD4 counts <= 200 cells/mm3 or <= 15 percent of the total lymphocyte count who are intolerant to trimethoprim and/or sulfonamides. Trimethoprim/sulfamethoxazole (TMP/SMX), which is effective for secondary PCP prophylaxis, is associated with allergic manifestations and side effects that limit its use. Patients who are intolerant of TMP/SMX require an effective alternative. Dapsone and atovaquone have both shown promise as PCP prophylactic agents.
To examine, in patients enrolled in protocols CPCRA 006 and/or 007, the relationship between patient compliance and demographic, psychosocial, and lifestyle characteristics and Health Belief Model premises (i.e., patient's perception of susceptibility to and severity of disease and perception of benefits and barriers to a particular treatment) in order to design more effective intervention protocols. Patient noncompliance can influence the statistical findings of a clinical study, possibly resulting in an incorrect assessment of the effects of the investigational therapeutic agent. Since the special populations targeted by the CPCRA for inclusion in HIV-related clinical research do not typify those traditionally included in clinical trials or compliance research, it is necessary to elucidate and examine the special needs of these populations and to determine the extent to which these needs manifest themselves as potential barriers to protocol compliance.
To determine the safety, tolerance, and pharmacokinetics of a new improved microparticulate suspension formulation of atovaquone administered at one of two dose levels (per 09/30/94 amendment, a third dose level was added) daily for 12 days in HIV-infected and perinatally exposed (per 8/9/95 amendment) infants and children who are at risk of developing Pneumocystis carinii pneumonia (PCP). Atovaquone has shown prophylactic potential in adults in the treatment of PCP but is poorly absorbed in tablet form. To improve the bioavailability of atovaquone, a new formulation has been prepared as a microparticulate suspension. Since studies in adults have demonstrated substantial safety of this drug, evaluation in children is being pursued.
To compare the safety and efficacy of two dosage regimens (daily and thrice-weekly) of sulfamethoxazole/trimethoprim (SMX/TMP; TMS) in the prevention of Pneumocystis carinii pneumonia (PCP) in high-risk HIV-infected patients. Previous tests have shown that SMX/TMP given daily is effective in preventing recurrence of PCP and may be effective in preventing PCP in patients who have never developed it. Because SMX/TMP can cause side effects, this study will attempt to determine the safest and most effective dose of this combination.
To determine the maximum tolerated dose (MTD) of WR 6026 in HIV-infected patients. To determine whether any unexpected toxicities are caused by WR 6026 in HIV-infected patients. To determine whether there is additional toxicity when WR 6026 is given for 21 days rather than 14 days. To further investigate the pharmacokinetics and pharmacodynamics of WR 6026, and in particular to examine potential correlations between the area under the concentration-time curve and methemoglobinemia or other toxicities. In recent animal studies, WR 6026 demonstrated inhibitory activity against Pneumocystis carinii pneumonia (PCP). This study will assess the safety and tolerance of this drug in HIV-infected patients who do not have PCP.
Primary: To compare the toxicity of daily versus weekly dapsone in HIV-infected infants and children; to study the pharmacokinetics of orally administered dapsone in HIV-infected infants and children. Secondary: To obtain information on the rate of Pneumocystis carinii pneumonia ( PCP ) breakthrough in children receiving two different dose regimens of dapsone. Prophylaxis for Pneumocystis carinii pneumonia ( PCP ) is recommended for all HIV-infected children considered to be at high risk. Approximately 15 percent of children are intolerant to trimethoprim / sulfamethoxazole, the first choice drug for PCP prophylaxis. Since many children are also unable to take or tolerate aerosolized pentamidine, dapsone is a second choice for PCP prophylaxis. The most favorable dose regimen for dapsone has not been established.
To determine if the drug combination sulfamethoxazole-trimethoprim (SMX-TMP), given by mouth, and the drug pentamidine (PEN), given by inhaled aerosol, are effective in preventing a relapse of Pneumocystis carinii pneumonia (PCP) when they are given to patients who have recovered from a first episode of PCP and are being given zidovudine (AZT) to treat primary HIV infection. AZT prolongs survival in patients with AIDS and decreases the occurrence of opportunistic infections such as PCP. However, PCP recurs in about 43 percent of patients receiving AZT, indicating a need for other treatments to reduce the relapse rate. The two medications to be tested in this study, SMX/TMP and aerosolized PEN, have also been partially effective in preventing recurrence of PCP. It is hoped that the combination of AZT with these medications will be more effective than AZT or one of the medications alone.