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[Study of the duration of antimicrobial chemotherapy in mycoplasmal pneumonia]
Y Tano1, T Matsushima, Y Kobashi
1Second Department of Internal Medicine, Kawasaki Medical School, Kawasaki Hospital, Okayama.
Abstract:
We assessed the period of administration of antibiotics required for cases of mycoplasmal pneumonia. The subjects were 38 patients with mycoplasmal pneumonia admitted to our hospital. These patients were treated with 100 mg minocycline or 500 mg erythromycin by intravenous infusion twice a day. They were divided into a 6 day-administration group (Group A; 16 cases) and a 9 day-administration group (Group B; 17 cases). Administration was discontinued on the 4th day or earlier in 5 cases due to side effects. A comparative assessment was made between Groups A and B with respect to body temperature, WBC, erythrocyte sedimentation rate, CRP, and chest X-ray on the 3rd, 6th, and 9th days of treatment, but no significant difference was observed. Residual shadows at the end of treatment were present in 100% of Group A and in 47% of Group B, but they disappeared gradually in both groups. No cases of recurrence were observed in either Group A or B within 1 month after the completion of treatment. Regarding the treatment period for mycoplasmal pneumonia by intravenous infusion of minocycline or erythromycin, no significant clinical difference was observed between the 6 day-administration group and the 9 day-administration group, suggesting that 6 days of administration is sufficient for treatment.
Insights
For mycoplasmal pneumonia, a 6-day antibiotic course using minocycline or erythromycin appears sufficient. Clinical outcomes and recurrence rates showed no significant difference compared to a 9-day treatment duration.
Area of Science:
- Infectious Diseases
- Pulmonology
- Pharmacology
Background:
- Mycoplasmal pneumonia is a common respiratory infection.
- Optimal antibiotic treatment duration for mycoplasmal pneumonia requires further investigation.
Purpose of the Study:
- To compare the efficacy of 6-day versus 9-day intravenous antibiotic treatment for mycoplasmal pneumonia.
- To evaluate clinical and radiological outcomes in patients receiving different durations of minocycline or erythromycin therapy.
Main Methods:
- A comparative study involving 38 patients with mycoplasmal pneumonia.
- Patients received either 6 days (Group A) or 9 days (Group B) of intravenous minocycline or erythromycin.
- Clinical parameters (temperature, WBC, ESR, CRP) and chest X-rays were assessed during treatment.
Main Results:
- No significant differences in clinical parameters or inflammatory markers were observed between the 6-day and 9-day groups.
- Residual radiological shadows were more frequent initially in the 6-day group but resolved over time.
- No recurrence of infection was noted within one month in either treatment group.
Conclusions:
- A 6-day intravenous antibiotic course of minocycline or erythromycin is clinically effective for treating mycoplasmal pneumonia.
- Shorter antibiotic durations may be sufficient, potentially reducing side effects and healthcare costs.