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SU2.1-3 | Shock and Resuscitation — Assignment
CLINICAL SCENARIO
A 42-year-old woman is brought to the emergency department after a road-traffic crash. She is alert but agitated, with a heart rate of 124/min, a blood pressure of 110/90 mmHg (narrowed pulse pressure), a respiratory rate of 26/min, cool clammy peripheries and a urine output that has fallen to 10 mL/h over the last hour. Her abdomen is distended and tender, and a bedside ultrasound shows free intraperitoneal fluid. She has no head injury. Over the next thirty minutes the team must recognise her shock, classify it, begin resuscitation and arrange definitive control of bleeding.
Instructions
Using this patient as your anchor, write a structured account of how you would recognise, classify, monitor and resuscitate her shock, and how you would judge whether your treatment is working. Ground every statement in her specific clinical picture — quote her observations where they support your reasoning, and state numerical thresholds (haemorrhage class ranges, transfusion ratio) explicitly. This is a haemorrhagic-shock case; keep the focus on assessment, classification and resuscitation rather than on the long-term outcome. Use the scaffolding sections below as the skeleton of your submission.
Length: 1200-1500 words
What to Submit
Explain how you recognise that this patient is in shock from the bedside picture alone, before any monitor confirms it. Identify the specific signs in her presentation (tachycardia, narrowed pulse pressure, tachypnoea, cool clammy peripheries, oliguria, agitation) and explain why her systolic pressure of 110 mmHg is not reassurance — define compensated shock and state why hypotension is a late sign.
Classify her shock by mechanism (relating it to the equation BP = CO x SVR) and justify why this is hypovolaemic/haemorrhagic rather than cardiogenic, distributive or obstructive. Then estimate her class of haemorrhagic shock using the standard four-class system, stating the approximate blood-volume-loss range for the class you choose and the features that place her there.
Describe how you would assess and monitor her using the ABCDE primary survey, explaining why assessment and treatment run in parallel rather than in sequence. List the perfusion endpoints you would track over time (urine output, lactate clearance, mentation, heart rate, peripheral warmth) and explain why these trends are more useful than a single blood-pressure reading.
Set out your resuscitation plan on the two simultaneous principles: restore tissue perfusion AND control the source of bleeding. Address balanced transfusion (the approximately 1:1:1 ratio of red cells, plasma and platelets) and damage-control resuscitation, the limited role of crystalloid, and the concept and rationale of permissive hypotension in uncontrolled haemorrhage — noting when it would be inappropriate.
In a short closing paragraph, explain in your own words the single most important principle this case teaches about shock — that it is a clinical diagnosis of inadequate perfusion, recognised early from the bedside, in which the trajectory must be treated rather than a single snapshot, and in which fluid alone never resuscitates a patient who is still bleeding.
Grading Rubric — Shock Recognition and Resuscitation — 30 points
| Criterion | Points | Full-marks descriptor |
|---|---|---|
| Bedside recognition of shock and understanding of compensated shock / late hypotension | 7 pts | Identifies all relevant signs in this patient and explains compensated shock and why the normal systolic pressure is not reassurance, with hypotension correctly framed as a late sign |
| Correct classification by mechanism and by haemorrhagic class with thresholds | 7 pts | Correctly classifies mechanism using BP = CO x SVR, excludes other types with reasoning, and assigns the correct haemorrhagic class with its blood-loss range and supporting features |
| ABCDE assessment, parallel assessment-and-treatment, and perfusion monitoring endpoints | 6 pts | Applies ABCDE, explains parallel assessment/treatment, and lists appropriate dynamic perfusion endpoints with rationale |
| Resuscitation principles: source control, balanced transfusion (1:1:1), permissive hypotension | 7 pts | Articulates both simultaneous principles, the 1:1:1 balanced transfusion and damage-control approach, limited crystalloid, and permissive hypotension with correct rationale and limits |
| Synthesis, clinical reasoning and clarity of writing | 3 pts | Insightful synthesis of the core principle of shock; clear, well-structured prose |