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Using a handheld ultrasound to check for collapsed lung (pneumothorax) after lung biopsy procedures

A feasibility study to investigate the role of ultra-portable thoracic ultrasound in the detection of post-procedural pneumothorax

Status
Completed
Phases
Unknown
Study type
Observational
Source
ANZCTR
Registry ID
ACTRN12625000980437
Enrollment
159
Registered
2025-09-05
Start date
2022-09-19
Completion date
2023-08-18
Last updated
2025-09-15

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Brief summary

This study looked at whether a small handheld ultrasound device can accurately detect collapsed lung (pneumothorax) after a lung biopsy. Currently, patients are usually checked with a chest X-ray, but this takes time and requires special equipment. We believed that handheld ultrasound would provide faster results at the bedside without radiation exposure. The study compared ultrasound findings with chest X-ray results to see how accurate the device is, particularly for clinically important cases that need treatment. We will also look at how quickly each test provides answers and compare their overall costs.

Interventions

Description: Participants undergoing CT-guided or bronchoscopy-guided lung biopsy were observed with serial ultra-portable thoracic ultrasound (UP-TUS) examinations to detect post-procedural pneumothorax. The device used was a Butterfly iQ+ handheld ultrasound probe (Butterfly Network, Burlington, USA) connected to a smart device with the “lung mode” setting. Each assessment involved scanning four pre-specified locations per hemithorax to assess for pleural sliding, B-lines, seashore sign, and (

Description: Participants undergoing CT-guided or bronchoscopy-guided lung biopsy were observed with serial ultra-portable thoracic ultrasound (UP-TUS) examinations to detect post-procedural pneumothorax. The device used was a Butterfly iQ+ handheld ultrasound probe (Butterfly Network, Burlington, USA) connected to a smart device with the “lung mode” setting. Each assessment involved scanning four pre-specified locations per hemithorax to assess for pleural sliding, B-lines, seashore sign, and (where relevant) lung point. Mode of delivery and timing: UP-TUS was performed in a semi-recumbent (45-degree) position. Assessments were conducted at three timepoints: Pre-procedure (screening, bilateral) to confirm lung sliding. Immediately post-procedure (ipsilateral side to biopsy). One hour post-procedure (ipsilateral side). Who delivered the assessment: Examinations were performed at the bedside by Thoracic Society of Australia and New Zealand (TSANZ) accredited respiratory clinicians (Respiratory Registrars with greater than 6 years postgraduate experience and Respiratory Physicians). Location: Procedures and ultrasound assessments occurred in a tertiary hospital setting (CT suite, bronchoscopy suite, or operating theatre recovery). Duration/dose: Each assessment took approximately 9 minutes. Participants received between 2–3 assessments depending on feasibility of the pre-procedural examination. If participants chose not to be involved in the study they may still be investigated with the Butterfly iQ+ at the discretion of the treating physician.

Sponsors

Dr Emelie Ross - Flinders Medical Centre
Lead SponsorIndividual

Eligibility

Sex/Gender
All
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

We included patients undergoing (1) CT-guided lung biopsy, (2) transbronchial forceps biopsy (TBFB), (3) transbronchial cryobiopsy (TBCB), and (4) radial endobronchial ultrasound (Radial-EBUS) biopsy at Flinders Medical Center.

Exclusion criteria

Exclusion criteria included (1) age under 18 years, (2) participants unable to provide consent due to severe intellectual disability, language barriers or severe psychiatric conditions, (3) if PTX had been diagnosed on the side of biopsy in the preceding 6 weeks, or (4) if an accredited clinician was not available to perform an assessment. Participants were also excluded from analysis after consent if they (1) did not proceed with a biopsy, or (2) if a chest drain was inserted during the procedure to manage an immediate PTX.

Outcome results

None listed

Source: ANZCTR · Data processed: Feb 4, 2026