In the Field
Simple thoracostomy is the broader procedural family that includes finger thoracostomy. Where finger thoracostomy specifies the digital exploration component, simple thoracostomy describes the open chest wall procedure more generally. The clinical pathway is the same: needle decompression fails, you escalate to surgical opening of the pleural space. The decision between completing the procedure with a chest tube versus leaving as a simple thoracostomy depends on equipment, training, and evacuation timeline. A patient minutes from a surgical facility may not need a chest tube placed in the field; a patient hours from definitive care almost certainly does.
Common Mistake
Confusing simple thoracostomy with chest tube placement. The procedures share the same chest wall approach (5th ICS, anterior axillary line, blunt dissection through to the pleural space). The difference is whether a tube is left in place. Simple thoracostomy without a tube relies on the patient's positioning and the open or covered wound to manage subsequent air or blood. Chest tube placement provides continuous drainage through a closed system. The other mistake is leaving a simple thoracostomy unmonitored - the tract can seal with tissue or clot and require re-decompression.
Technical Detail
Simple thoracostomy technique: identify 5th intercostal space at the anterior axillary line; make a 4 cm horizontal incision over the rib below the target ICS; blunt dissect through subcutaneous tissue and intercostal muscle riding just above the upper rib edge; push through the parietal pleura with a closed Kelly clamp, then open; air or blood escapes confirming entry; finger sweep to confirm pleural space and assess for adhesions; cover wound with three-sided occlusive dressing or leave open per protocol. Variants: finger thoracostomy - same procedure with digital exploration as the diagnostic and therapeutic element; tube thoracostomy (chest tube) - completion with placement of indwelling drainage tube. TCCC 2026 lists thoracostomy approaches as escalation from failed needle decompression in refractory shock from suspected tension pneumothorax, qualified by provider skill and authorization.
