Predictors of outcome of chest tube drainage of nonpurulent exudative pleural effusions.

Background: Although chest tube drainage is the primary management method for many pleural effusions, it has a failure rate of 9.4-48%. In this study, we examined the factors that predict the outcome of management of nonpurulent exudative effusions. The aim of this study was to determine the predictors of outcomes of chest tube drainage of pleural effusions. Methodology: Consecutive patients who had a chest tube drainage of nonpurulent exudative pleural effusions were followed up in a prospective observational cohort study until extubation and discharge. Data on the management of the patients were recorded, analysed and compared between groups of patients with good and poor outcomes. Results: Of the 52 patients studied, 38 had good outcomes, while 14 had poor outcomes. The mean±sd age was 39.7±15.9 years. Multivariate analysis demonstrated that empyema thoracis complicating drainage was an independent predictor of a poor outcome, while the duration of drainage ≤14 days and duration of illness before presentation <30 days were predictive of a good outcome. Conclusion: Our results show that the development of empyema thoracis during drainage, a long duration of drainage and a prolonged period of illness before presentation are predictive of the outcome of chest tube drainage.

Prognostic Factors in the Management of Empyema Thoracis in Northern Nigeria.

Background: Empyema thoracis portrays pleural effusion with demonstrable actively multiplying bacteria. It is a significant cause of morbidity, and commonly complicates parapneumonic effusions. It is important to identify those factors that can be used to prognosticate the outcome of its management in our locality so that those that are modifiable could be applied to improve management outcomes. Materials and Methods: A prospective cohort study of patients managed for empyema thoracis at the Ahmadu Bello University Teaching Hospital (ABUTH), Zaria, Nigeria from February 2017 to January 2018 was conducted. Eighty-three patients were enrolled for this study and recruitment into the study included all consecutive patients being managed for empyema thoracis in ABUTH, Zaria during the study period. Data collected included age, gender, aetiology, microbial isolates, BMI, initial and total empyema volumes, and duration before hospital presentation. The patients were subsequently managed and observed, and the outcome of management (duration of drainage and hospital stay, percentage of lung expansion, and need for decortication) was noted. Results: Patients in the paediatric age group correlated positively with an earlier presentation to the hospital. The duration before presentation correlated positively with the stage of the disease. The duration before presentation and the total empyema volume indexed to body surface area could prognosticate all four outcome parameters assessed. The age and stage of the disease prognosticated the lung expansion and the need for decortication. The initial empyema volume indexed to body surface area prognosticated the length of hospital stay. The presence of complications was a determinant of the need for decortication. Adolescents and adults had 2.1 times increased probability of requiring a decortication for successful management. Conclusion: The age, stage of the disease, duration before presentation, initial empyema volume indexed to body surface area, and total empyema volume indexed to body surface area can be used to prognosticate the outcome of empyema thoracis. With the onset of complication comes a higher chance of requiring decortication. Children are less likely to require decortication for satisfactory management of empyema thoracis.