scholarly journals Pneumothorax rates in CT-Guided lung biopsies: a comprehensive systematic review and meta-analysis of risk factors

2020 ◽  
Vol 93 (1108) ◽  
pp. 20190866 ◽  
Author(s):  
Ya Ruth Huo ◽  
Michael Vinchill Chan ◽  
Al-Rahim Habib ◽  
Isaac Lui ◽  
Lloyd Ridley

Objective: This systematic review and meta-analysis investigated risk factors for pneumothorax following CT-guided percutaneous transthoracic lung biopsy. Methods: A systematic search of nine literature databases between inception to September 2019 for eligible studies was performed. Results: 36 articles were included with 23,104 patients. The overall pooled incidence for pneumothorax was 25.9% and chest drain insertion was 6.9%. Pneumothorax risk was significantly reduced in the lateral decubitus position where the biopsied lung was dependent compared to a prone or supine position [odds ratio (OR):3.15]. In contrast, pneumothorax rates were significantly increased in the lateral decubitus position where the biopsied lung was non-dependent compared to supine (OR:2.28) or prone position (OR:3.20). Other risk factors for pneumothorax included puncture site up compared to down through a purpose-built biopsy window in the CT table (OR:4.79), larger calibre guide/needles (≤18G vs >18G: OR 1.55), fissure crossed (OR:3.75), bulla crossed (OR:6.13), multiple pleural punctures (>1 vs 1: OR:2.43), multiple non-coaxial tissue sample (>1 vs 1: OR 1.99), emphysematous lungs (OR:3.33), smaller lesions (<4 cm vs 4 cm: OR:2.09), lesions without pleural contact (OR:1.73) and deeper lesions (≥3 cm vs <3cm: OR:2.38). Conclusion: This meta-analysis quantifies factors that alter pneumothorax rates, particularly with patient positioning, when planning and performing a CT-guided lung biopsy to reduce pneumothorax rates. Advances in knowledge: Positioning patients in lateral decubitus with the biopsied lung dependent, puncture site down with a biopsy window in the CT table, using smaller calibre needles and using coaxial technique if multiple samples are needed are associated with a reduced incidence of pneumothorax.

Author(s):  
Dimitrios Schizas ◽  
Dimitrios Papaconstantinou ◽  
Anastasia Krompa ◽  
Antonios Athanasiou ◽  
Tania Triantafyllou ◽  
...  

Abstract The thoracic phase of minimally invasive esophagectomy was initially performed in the lateral decubitus position (LDP); however, many experts have gradually transitioned to a prone position (PP) approach. The aim of the present systematic review and meta-analysis is to quantitatively compare the two approaches. A systematic literature search of the MEDLINE, Embase, Google Scholar, Web of Knowledge, China National Knowledge Infrastructure and ClinicalTrials.gov databases was undertaken for studies comparing outcomes between patients undergoing minimally invasive esophageal surgery in the PP versus the LDP. In total, 15 studies with 1454 patients (PP; n = 710 vs. LDP; n = 744) were included. Minimally invasive esophagectomy in the PP provides statistically significant reduction in postoperative respiratory complications (Risk ratios 0.5, 95% confidence intervals [CI] 0.34–0.76, P &lt; 0.001), blood loss (weighted mean differences [WMD] –108.97, 95% CI –166.35 to −51.59 mL, P &lt; 0.001), ICU stay (WMD –0.96, 95% CI –1.7 to −0.21 days, P = 0.01) and total hospital stay (WMD –2.96, 95% CI –5.14 to −0.78 days, P = 0.008). In addition, prone positioning increases the overall yield of chest lymph node dissection (WMD 2.94, 95% CI 1.54–4.34 lymph nodes, P &lt; 0.001). No statistically significant difference in regards to anastomotic leak rate, mortality and 5-year overall survival was encountered. Subgroup analysis revealed that the protective effect of prone positioning against pulmonary complications was more pronounced for patients undergoing single-lumen tracheal intubation. A head to head comparison of minimally invasive esophagectomy in the prone versus the LDP reveals superiority of the former method, with emphasis on the reduction of postoperative respiratory complications and reduced length of hospitalization. Long-term oncologic outcomes appear equivalent, although validation through prospective studies and randomized controlled trials is still necessary.


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