*Complications of Arterial Line (Art Line):* 1. *Infection* - Local or bloodstream infection due to poor aseptic technique. 2. *Thrombosis* - Clot formation in the artery, possibly causing distal ischemia. 3. *Embolism* - Air or clot emboli can obstruct distal blood flow. 4. *Hemorrhage* - Accidental disconnection or dislodgement can lead to rapid blood loss. 5. *Arterial Spasm* - Can reduce or cut off blood flow to the extremity. 6. *Ischemia/Necrosis* - Prolonged or improper use may compromise distal circulation. 7. *Nerve Damage* - Especially with femoral or brachial artery access. 8. *Accidental Intra-arterial Injection* - Medications mistakenly injected into arterial line can cause severe tissue damage. *Prevention:* Strict aseptic technique, proper catheter care, and regular monitoring of limb perfusion and waveform integrity.