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System and bronchoscope manufacturing records were reviewed and found no issues associated with this case.The scope was returned for investigation.Failure analysis of the scope used in the case reveals that it passed the final qa/qc test and investigation found no evidence of malfunction.Failure analysis of the reported em signal loss found no hardware faults, and internal testing showed no signal loss.Logs did not reveal a definitive root cause, though possible contributors include elevated em sensitivity, setup interference, or environmental factors.Signal loss often coincided with ebus use, a known em source, yet the physician managed each episode appropriately (retracting the scope or pausing for recovery).While ebus is the likely source of interference, it remains unclear if the em signal loss contributed to the reported injury.Failure analysis of the af revealed motion blur and double exposure from using non-digital cine instead of the 15 pps digital option, causing poor bead tracking, pose-estimation errors, and af misalignment.While breath-hold variation was minimal, af and targeting are only guides, relying solely on af without live fluoroscopy and clinical judgment constitutes a use error.Video review showed that immediately after the user breached the parenchyma at the start of the procedure, em signal loss occurred.Several tilt maneuvers followed before lesion selection, with fluoroscopy initially confirming af alignment.Shortly thereafter, af and targeting began to diverge amid intermittent signal loss, and the scope advanced beyond the pleural border.Despite this misalignment, driving mode was enabled.During a subsequent tilt, the lesion was identified, marking the injury and a prolonged signal loss ensued.A biopsy was still taken under inconsistent af and fluoroscopy guidance.Use errors, including biopsying during signal loss and while cardiac motion was visible, contributed to af and ebus misalignment.The physician attributed the pneumothorax to af misalignment, navigating the scope toward the pleura, but failure analysis showed the discrepancy was actually caused by motion blur and double exposure from non-digital cine.Because af and targeting are guidance only, relying on them without live fluoroscopy and clinical judgment is a use error.Video review confirmed the scope breach occurred before the misalignment, making it unclear whether af error caused the injury.Biopsies continued despite intermittent signal loss and misalignment, and a separate use error, tool overextension, occurred after the injury was identified.In conclusion, although af misalignment may have influenced navigation, it resulted from improper imaging technique, not device malfunction.Em signal loss was not reproduced during testing and was likely due to environmental interference (ebus use).The scope functioned as intended, and the physician demonstrated controlled handling.Therefore, it is unlikely the galaxy system caused but use of the system may have contributed to the injury.The complaint is being reported based on the following conclusions: a pneumothorax was reported following a tilt sweep, requiring chest tube insertion post-procedure.The patient was admitted and discharged the following day.The physician attributed the injury to af mismatch.A malfunction of af mismatch and em signal loss were reported, along with two identified use errors during investigation.
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