The unit was not setup properly.The second tube should have been clamped prior to use per the instructions provided.A double collection unit is typically not used when only one chest tube is required.Based on the information provided, the device was not used in accordance with the labeling.Instructions for the proper setup of a double unit are included in the instructions for use (ifu)."dual collection models (2 patient tubes) require both patient tubes to remain connected to the patient.When using dual collection models with only one patient tube connection (1 tube only), the patient tube not in use must remain securely clamped off at all times".
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