Emergency Triage and Critical Care for a Hit-by-Car Cat

Primary survey (ABC): Assess airway, breathing, circulation. The cat is dyspneic with paradoxical chest movement, suggesting flail chest or pneumothorax. Provide supplemental oxygen via mask or flow-by. If breathing is inadequate, assist ventilation with a bag-valve-mask. Do not attempt to place an endotracheal tube without sedation unless the cat is unconscious, as it may cause further stress. Assess circulation: pale mucous membranes, tachycardia, and hypothermia indicate shock. Place an IV catheter (or intraosseous if IV access is difficult) and begin fluid resuscitation with a balanced crystalloid (e.g., 10–20 mL/kg bolus over 15–20 minutes, reassess). Administer analgesia (e.g., buprenorphine 0.01–0.02 mg/kg IV) if not contraindicated. Cover the cat with a warm blanket or use active warming (forced-air blanket) to treat hypothermia. Obtain a brief history from the owner. Perform a secondary survey (head-to-toe) as soon as possible, but do not delay life-saving interventions. Prepare for thoracocentesis if pneumothorax is suspected. Monitor vital signs continuously.

Monitor heart rate, rhythm, and blood pressure (Doppler or oscillometric) to assess perfusion and response to fluids. Monitor respiratory rate, effort, and SpO2; if SpO2 remains low despite oxygen, consider pneumothorax and prepare for thoracocentesis. Monitor temperature and continue active warming. Monitor mentation and pain score. Watch for signs of worsening shock (e.g., prolonged CRT, weak pulses). Potential complications: fluid overload (monitor respiratory rate and lung sounds), arrhythmias (e.g., traumatic myocarditis), pneumothorax, pulmonary contusions, and hypothermia. Also monitor urine output if a urinary catheter is placed. Recheck PCV/TP to guide fluid therapy. Ensure adequate analgesia. Communicate with the veterinarian about the cat's status.