Postoperative And Post-Trauma Care
Help Questions
USMLE Step 3 › Postoperative And Post-Trauma Care
After a motor vehicle collision, a 30-year-old woman arrives hypotensive (BP 78/44) and tachycardic (HR 132); FAST is positive for free fluid; Hgb 9.2 g/dL, lactate 5.1 mmol/L. Which intervention is most critical at this stage of care?
Start therapeutic heparin for suspected pulmonary embolism causing shock
Administer large-volume crystalloid bolus and reassess after 3 liters
Order CT abdomen/pelvis with contrast to localize bleeding source
Activate massive transfusion protocol and proceed to emergent operative control
Explanation
This question tests USMLE Step 3 competencies in postoperative and post-trauma care, focusing on management strategies and complication prevention. Understanding the principles of postoperative care involves recognizing common complications and appropriate interventions based on clinical guidelines. In this scenario, the patient presents with hypotension, tachycardia, positive FAST, low hemoglobin, and elevated lactate after MVC, necessitating consideration of hemorrhagic shock management. Choice B is correct because it directly addresses the patient's current clinical needs, aligning with best practices for massive transfusion and operative control in unstable trauma. Choice A is incorrect because it reflects a common misconception, such as relying solely on crystalloids, leading to inadequate management and dilutional coagulopathy. To enhance learning, students should focus on mastering complication recognition and prioritization of care, utilizing scenario-based practice to reinforce decision-making skills and prevent common clinical pitfalls.
Two days after knee surgery, a 45-year-old woman on prophylactic LMWH develops sudden dyspnea and syncope; BP 82/50, HR 128; bedside echo shows RV dilation. Which intervention is most critical at this stage of care?
Start oral anticoagulation only and avoid parenteral therapy initially
Schedule outpatient V/Q scan because CT contrast may worsen kidney function
Administer systemic thrombolysis if no absolute contraindications are present
Give nebulized bronchodilators for presumed postoperative bronchospasm
Explanation
This question tests USMLE Step 3 competencies in postoperative and post-trauma care, focusing on management strategies and complication prevention. Understanding the principles of postoperative care involves recognizing common complications and appropriate interventions based on clinical guidelines. In this scenario, the patient presents with sudden dyspnea, syncope, hypotension, tachycardia, and RV dilation on echo two days after knee surgery, necessitating consideration of massive pulmonary embolism management. Choice A is correct because it directly addresses the patient's current clinical needs, aligning with best practices for thrombolysis in hemodynamically unstable PE. Choice B is incorrect because it reflects a common misconception, such as delaying for outpatient imaging, leading to inadequate management and mortality risk. To enhance learning, students should focus on mastering complication recognition and prioritization of care, utilizing scenario-based practice to reinforce decision-making skills and prevent common clinical pitfalls.