title: Two-piece Luer lock may not be locked.
mesh_terms: D002408:Catheters, Indwelling / Q000009:adverse effects*; D004867:Equipment Design; D004868:Equipment Failure; D004869:Equipment Safety; D006282:Health Personnel / Q000193:education; D006801:Humans; D007262:Infusions, Intravenous / Q000295:instrumentation*