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Updated: Jan 16, 2026

Local Anesthetic Thoracoscopy for Undiagnosed Pleural Effusion
Published on: November 10, 2023
Safety and Performance of Clinical Engineers as Thoracoscopic Scope Operators.
Taiki Sato1, Tomoki Keiya1, Makoto Tada1
1Department of Thoracic Surgery, Hakodate Goryoukaku Hospital, Hakodate, Hokkaido, Japan.
Clinical engineer scope operator (CESO) assistance in video-assisted thoracic surgery (VATS) lobectomy is safe and effective. CESO involvement did not increase complications, and surgical stability was achieved rapidly.
Area of Science:
- Thoracic Surgery
- Surgical Innovation
- Medical Technology
Background:
- Efforts in Japan aim to reduce physician workload in thoracoscopic lung resections.
- Clinical Engineers (CE) are being trained as scope operators (SO) to assist in these procedures.
Purpose of the Study:
- To evaluate the safety and learning curve of clinical engineer scope operator (CESO) assistants in VATS lobectomy.
- To assess the impact of CESO assistance on surgical outcomes and postoperative complications.
Main Methods:
- Analysis of surgical data and postoperative complications for VATS lobectomy cases from 2020-2023.
- Assessment of scope clearance sustainability (SCS) and comparison between CESO-assisted and non-CESO groups.
- Multivariate analysis to identify factors associated with postoperative complications.
Main Results:
- CESO-assisted procedures increased from 37% to 53% between 2020 and 2023.
- No significant differences in operating time, blood loss, or hospital stay were found between groups.
- Pulmonary air leakage >7 days was linked to complications; incomplete interlobar fissure was the only independent factor, unrelated to CESO involvement.
- Surgical technique stability was achieved within 18-28 cases, demonstrating a learning curve improvement.
Conclusions:
- Video-assisted thoracic surgery (VATS) with CESO assistance is a safe and reliable approach.
- CESO assistance demonstrates a favorable learning curve, with stability achieved within 20-30 cases.
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