Question:
The Thoracoscore is a widely used model to predict operative mortality in thoracic surgery patients. Which of the following is NOT a component of the Thoracoscore?
The Thoracoscore is a widely used model to predict operative mortality in thoracic surgery patients. Which of the following is NOT a component of the Thoracoscore?
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The model predicts mortality from preoperative variables, so an outcome it tries to predict cannot itself be an input.
Updated On: Jun 23, 2026
- ASA classification
- Surgery priority (elective vs urgent)
- Performance status
- Expected complications after surgery
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The Correct Option is D
Solution and Explanation
Correct option (the one that is NOT a component): Expected complications after surgery.
Step 1: The Thoracoscore is the most widely used model to estimate in-hospital operative mortality risk for thoracic surgery patients, built from defined preoperative variables.
Step 2: Its actual nine variables are: age, sex, ASA class, performance (WHO) status, dyspnoea score, priority of surgery (elective/urgent/emergency), extent/diagnosis group of surgery, number of comorbidities, and the procedure class (pneumonectomy or not).
Step 3: ASA classification, surgery priority and performance status are all genuine components, so they cannot be the answer. Expected post-operative complications is NOT one of the input variables (the score predicts mortality, not complications), so it is the odd one out.
Note on the printed key: the recall key marks surgery priority as the non-component, but surgery priority is a true Thoracoscore variable, so the medically correct answer is expected complications.
Ref: Bailey and Love, Short Practice of Surgery, 27th edition, 2018.
Step 1: The Thoracoscore is the most widely used model to estimate in-hospital operative mortality risk for thoracic surgery patients, built from defined preoperative variables.
Step 2: Its actual nine variables are: age, sex, ASA class, performance (WHO) status, dyspnoea score, priority of surgery (elective/urgent/emergency), extent/diagnosis group of surgery, number of comorbidities, and the procedure class (pneumonectomy or not).
Step 3: ASA classification, surgery priority and performance status are all genuine components, so they cannot be the answer. Expected post-operative complications is NOT one of the input variables (the score predicts mortality, not complications), so it is the odd one out.
Note on the printed key: the recall key marks surgery priority as the non-component, but surgery priority is a true Thoracoscore variable, so the medically correct answer is expected complications.
Ref: Bailey and Love, Short Practice of Surgery, 27th edition, 2018.
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