Conservative and Surgical Modalities in the Management of Pediatric Parapneumonic Effusion and Empyema: A Living Systematic Review and Network Meta-Analysis.

BACKGROUND: The optimal treatment for community-acquired childhood pneumonia complicated by empyema remains unclear. RESEARCH QUESTION: In children with parapneumonic effusion or empyema, do hospital length of stay and other key clinical outcomes differ according to the treatment modality used? STUDY DESIGN AND METHODS: A living systematic review of randomized controlled trials (RCTs) was conducted by searching the Cochrane Central Register of Controlled Trials, Embase, Latin American and Caribbean Health Sciences Literature, Ovid MEDLINE, and Web of Science Core Collection databases. Eligible RCTs included patients aged < 18 years and compared two of the following treatment modalities: antibiotics alone, chest tube insertion with or without fibrinolytics, video-assisted thoracoscopic surgery (VATS), and decortication via thoracotomy. A network meta-analysis was performed to evaluate treatment effects on hospital length of stay (LOS), the primary outcome. RESULTS: Eleven trials including a total of 590 patients were selected for the network meta-analysis. Compared with a chest tube alone, a chest tube with fibrinolytics, thoracotomy, and VATS were all associated with shorter LOS, with a mean difference of 5.05 days (95% CI, 2.46-7.64), 6.33 days (95% CI, 3.17-9.50), and 5.86 days (95% CI, 3.38-8.35), respectively. No substantial differences in LOS were observed between the latter three interventions. None of the 11 RCTs compared antibiotics alone vs other types of treatment. Most trials reported peri-procedural complications and the need for reintervention, but the descriptions differed significantly between trials, preventing meta-analysis. In trials reporting health care-associated costs, fibrinolytics had cost advantages compared with VATS. Short- and long-term morbidity and mortality were very low, regardless of the treatment modality. INTERPRETATION: The results of this network meta-analysis showed that a chest tube alone was associated with a longer LOS compared with other treatment modalities. The lower cost associated with a chest tube plus fibrinolytics warrants consideration when choosing between treatment options, given similar LOS and clinical outcomes compared with the other modalities.

Conservative and surgical modalities in the management of paediatric parapneumonic effusion and empyema: a protocol for a living systematic review and network meta-analysis.

INTRODUCTION: Parapneumonic effusion and empyema are common complications of paediatric pneumonia. Acceptable treatment modalities for large parapneumonic effusions include antibiotics alone or in conjunction with surgical interventions. Clear guidelines on the best treatment approach are lacking and mostly based on evidence prior to widespread pneumococcal conjugate 13-valent vaccination (PCV-13). METHODS AND ANALYSIS: A living systematic review and network meta-analysis will be performed comparing the five treatment modalities: (1) antibiotics alone; (2) chest tube drainage without fibrinolytics; (3) chest tube drainage with fibrinolytics; (4) video-assisted thoracoscopic surgery and (5) open thoracotomy. The review protocol is reported following the Preferred Reporting Items for Systematic Review and Meta-Analysis Protocols guidelines. Eligible studies are randomised controlled trials comparing any pair of interventions in paediatric patients with empyema or parapneumonic effusion. The following databases will be searched: Ovid MEDLINE, EMBASE, Cochrane Central Register of Controlled Trials (CENTRAL), Web of Science, LILACS and Google Scholar. Citation screening and data extraction will be completed using a validated crowdsourcing methodology using InsightScope. To assess the risk of bias, we will use the revised Cochrane risk of bias tool for randomised trials. The primary outcome of the study is the length of stay. Secondary outcomes are (1) periprocedural complications and (2) need for re-intervention. A frequentist network meta-analysis design will be implemented with a random-effects model comparing different interventions. In a subgroup analysis, studies and patients will be stratified by the size of pleural effusion and the date of trial (pre/post-PCV-13). Eligible citations and available results will be uploaded to an online database, hosted on Open Science Framework. The database will be updated at least every 4 months with any newly published research. ETHICS AND DISSEMINATION: No ethics review is required for this study. Results will be published in a peer-reviewed journal. Data will be available as part of an online database summarising the evidence of this living systematic review. PROSPERO REGISTRATION: Pending peer review.

Self-initiated lifestyle interventions lead to potential insight into an effective, alternative, non-surgical therapy for mitochondrial disease associated multiple symmetric lipomatosis.

BACKGROUND: A 56-year-old female, diagnosed as a carrier of the mitochondrial DNA mutation (MTTK c.8344A > G) associated with the MERRF (myoclonic epilepsy with ragged red fibers) syndrome, presented with a relatively uncommon but well-known phenotypic manifestation: severe multiple symmetric lipomatosis (MSL). After surgical resection of three kilograms of upper mid-back lipomatous tissue, the patient experienced a significant decline in her functional capacity and quality of life, which ultimately resulted in her placement on long-term disability. METHODS: Dissatisfied with the available treatment options centered on additional resection surgeries, given the high probability of lipoma regrowth, the patient independently researched and applied alternative therapies that centred on a carbohydrate-restricted diet and a supervised exercise program. RESULTS: The cumulative effect of her lifestyle interventions resulted in the reversal of her MSL and her previously low quality of life. She met all her personal goals by the one-year mark, including reduced size of the residual post-surgical lipomas, markedly enhanced exercise tolerance, and return to work. She continues to maintain her interventions and to experience positive outcomes at the two-year mark. INTERPRETATION: This case report documents the timing and nature of lifestyle interventions in relation to the reversal in growth pattern of her previously expanding and debilitating lipomas. The profound nature of the apparent benefit on lipoma growth demonstrates the intervention's potential as a new feasible non-surgical therapy for mitochondrial-disease-associated MSL, and justifies its systematic study. We also describe how this case has inspired the care team to re-examine its approach to involved patients.