BACKGROUND: A prospective study was done to evaluate the influence of clamp usage on clot formation inside thoracic drains. METHODS: Each drain was weighed soon after removal; they were then washed, dried and weighed again. The difference between the first and second weights was taken as the amount of clot deposit formed. RESULTS: We found more clots accumulated inside the drains that were temporarily obstructed by the clamp. CONCLUSION: In this study, there were more clots formation inside thoracic drains clamped, even if they were occluded intermittently. This can lead thoracic drains to function improperly. The discussion about the correct usage of thoracic drains must be a subject for educational programs for physicians and nurses, to aim for the safest use of this widely used and highly efficient system.
Pleura; Pleural cavity; Thoracostomy; Chest tubes
