Drainage tubes are hollow devices placed in wounds, body cavities, or hollow organs to remove fluid, blood, or air. Their primary clinical purpose is to prevent the dangerous accumulation of serous fluid, pus, or hematomas that can delay wound healing and promote bacterial growth.
Common clinical scenarios requiring drainage include post-operative abdominal surgeries, cardiothoracic procedures to evacuate chest air and blood, and deep abscess debridement. By keeping dead space collapsed and removing contaminants, these tubes support optimal tissue recovery.
Drainage systems operate either passively or actively depending on the clinical need of the patient.
Regular nursing assessment ensures the drainage system functions properly and identifies early signs of complications. Inspect the insertion site every shift for redness, swelling, foul odor, or excessive tenderness. Check all tubing connections to ensure they remain secure, airtight, and free of kinks or accidental looping that could obstruct flow. Verify that the collection device is hanging below the level of the insertion site for gravity systems, or that suction is active for closed systems.
Accurate quantification of drainage output provides vital data regarding hemostasis and healing. Measure output at the end of every nursing shift, or more frequently if ordered for high-output states.
A sudden spike in bright red blood or a complete stop in output warrants immediate medical notification.
Drain insertion sites represent direct portals of entry for pathogens into sterile body cavities. Perform meticulous hand hygiene and use aseptic technique during all dressing changes. Inspect the skin around the suture line for signs of localized infection such as warmth, purulent discharge, or spreading erythema. Cleanse the site using sterile normal saline, working in a circular motion from the center outward away from the drain site. Apply a sterile split-drain dressing snugly around the tubing to absorb minor exudate and protect the skin.
Drainage tubes can present mechanical or clinical challenges that require prompt nursing intervention.
Drain removal occurs when output decreases to minimal levels, typically less than 30 mL per 24 hours, indicating the cavity has closed. Gather necessary supplies including suture removal kits, sterile dressings, and biohazard bags. Medicate the patient for pain approximately 30 minutes before the procedure if prescribed. Instruct the patient to take a deep breath and hold it (Valsalva maneuver) during removal to prevent air embolism and ease discomfort. Pull the tube smoothly and steadily, immediately applying an occlusive dressing to the site. Monitor the site closely afterwards for persistent leakage or hematoma formation.