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Symptom resolution in patients with Mycoplasma pneumoniae pneumonia
Thomas J Marrie1, Michael Beecroft, Zeljka Herman-Gnjidic
1Department of Medicine, University of Alberta, Edmonton, Alberta. tom.marrie@ualberta.ca
Background:
Mycoplasma pneumoniae generally causes pneumonia of mild to moderate severity in adults. However, little is known about the time course of the resolution of symptoms in this illness.
Objectives:
To determine the time course of the resolution of symptoms in M pneumoniae pneumonia.
Methods:
The severity of fatigue, cough, dyspnea, sputum and pleuritic chest pain were self-scored and recorded daily for 14 days and on days 30 and 42. Each symptom was scored on a scale of 0 to 5. The sum of the five symptom scores had a range of 0 to 25 and was transformed into a value from zero to 100 by multiplying by four.
Results:
The mean composite symptom score for 76 patients was 59 (out of 100) at presentation, which declined to a score of 17 on day 14. Patients with a score of greater than 20 on day 14 had significantly higher scores throughout the course of the illness. Thirty-four per cent of those who were employed did not take time off work.
Conclusions:
Most patients with M pneumoniae pneumonia had resolution of their symptoms within two weeks; however, 12.6% were still symptomatic at 42 days.
Insights
Most patients recover from Mycoplasma pneumoniae pneumonia within two weeks. However, some individuals experience persistent symptoms for up to 42 days, impacting their daily lives and work.
Area of Science:
- Respiratory Medicine
- Infectious Diseases
- Clinical Microbiology
Background:
- Mycoplasma pneumoniae commonly causes mild to moderate pneumonia in adults.
- Limited data exists on the symptom resolution timeline for this infection.
Purpose of the Study:
- To investigate the duration and pattern of symptom resolution in Mycoplasma pneumoniae pneumonia.
Main Methods:
- Patients self-scored five key symptoms (fatigue, cough, dyspnea, sputum, chest pain) daily for 14 days, then on days 30 and 42.
- Symptom severity was rated on a 0-5 scale, with a composite score out of 100 calculated.
- A cohort of 76 patients with confirmed M. pneumoniae pneumonia was studied.
Main Results:
- The average composite symptom score decreased from 59 at presentation to 17 by day 14.
- Patients with higher scores (>20) at day 14 showed prolonged symptom duration.
- 34% of employed patients returned to work before symptom resolution.
Conclusions:
- The majority of patients with Mycoplasma pneumoniae pneumonia experience symptom resolution within two weeks.
- A significant minority (12.6%) remained symptomatic up to 42 days post-diagnosis.
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