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Manual Aspiration of a Pneumothorax After CT-guided Lung Biopsy: Outcomes and Risk Factors

Overview
Journal Br J Radiol
Specialty Radiology
Date 2023 Jul 2
PMID 37393532
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Abstract

Objective: Quantify the outcomes following pneumothorax aspiration and influence upon chest drain insertion.

Methods: This was a retrospective cohort study of patients who underwent aspiration for the treatment of a pneumothorax following a CT percutaneous transthoracic lung biopsy (CT-PTLB) from January 1, 2010 to October 1, 2020 at a tertiary center. Patient, lesion and procedural factors associated with chest drain insertion were assessed with univariate and multivariate analyses.

Results: A total of 102 patients underwent aspiration for a pneumothorax following CT-PTLB. Overall, 81 patients (79.4%) had a successful pneumothorax aspiration and were discharged home on the same day. In 21 patients (20.6%), the pneumothorax continued to increase post-aspiration and required chest drain insertion with hospital admission. Significant risk factors requiring chest drain insertion included upper/middle lobe biopsy location [odds ratio (OR) 6.46; 95% CI 1.77-23.65, = 0.003], supine biopsy position (OR 7.06; 95% CI 2.24-22.21, < 0.001), emphysema (OR 3.13; 95% CI 1.10-8.87, = 0.028), greater needle depth ≥2 cm (OR 4.00; 95% CI 1.44-11.07, = 0.005) and a larger pneumothorax (axial depth ≥3 cm) (OR 16.00; 95% CI 4.76-53.83, < 0.001). On multivariate analysis, larger pneumothorax size and supine position during biopsy remained significant for chest drain insertion. Aspiration of a larger pneumothorax (radial depths ≥3 cm and ≥4 cm) had a 50% rate of success. Aspiration of a smaller pneumothorax (radial depth 2-3 cm and <2 cm) had an 82.6% and 100% rate of success, respectively.

Conclusion: Aspiration of pneumothorax after CT-PTLB can help reduce chest drain insertion in approximately 50% of patients with larger pneumothoraces and even more so with smaller pneumothoraces (>80%).

Advances In Knowledge: Aspiration of pneumothoraces up to 3 cm was often associated with avoiding chest drain insertion and allowing for earlier discharge.

Citing Articles

Lung Cancer and Interstitial Lung Diseases.

Drakopanagiotakis F, Krauss E, Michailidou I, Drosos V, Anevlavis S, Gunther A Cancers (Basel). 2024; 16(16).

PMID: 39199608 PMC: 11352559. DOI: 10.3390/cancers16162837.

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