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. 2021 Apr 8;32(3):333-342.
doi: 10.1093/icvts/ivaa273.

A systematic review of risk prediction models for perioperative mortality after thoracic surgery

Marcus Taylor  1 , Syed F Hashmi  1 , Glen P Martin  2 , Michael Shackcloth  3 , Rajesh Shah  1 , Richard Booton  4 , Stuart W Grant  5
Affiliations

A systematic review of risk prediction models for perioperative mortality after thoracic surgery

Marcus Taylor et al. Interact Cardiovasc Thorac Surg. .

Abstract

Objectives: Guidelines advocate that patients being considered for thoracic surgery should undergo a comprehensive preoperative risk assessment. Multiple risk prediction models to estimate the risk of mortality after thoracic surgery have been developed, but their quality and performance has not been reviewed in a systematic way. The objective was to systematically review these models and critically appraise their performance.

Methods: The Cochrane Library and the MEDLINE database were searched for articles published between 1990 and 2019. Studies that developed or validated a model predicting perioperative mortality after thoracic surgery were included. Data were extracted based on the checklist for critical appraisal and data extraction for systematic reviews of prediction modelling studies.

Results: A total of 31 studies describing 22 different risk prediction models were identified. There were 20 models developed specifically for thoracic surgery with two developed in other surgical specialties. A total of 57 different predictors were included across the identified models. Age, sex and pneumonectomy were the most frequently included predictors in 19, 13 and 11 models, respectively. Model performance based on either discrimination or calibration was inadequate for all externally validated models. The most recent data included in validation studies were from 2018. Risk of bias (assessed using Prediction model Risk Of Bias ASsessment Tool) was high for all except two models.

Conclusions: Despite multiple risk prediction models being developed to predict perioperative mortality after thoracic surgery, none could be described as appropriate for contemporary thoracic surgery. Contemporary validation of available models or new model development is required to ensure that appropriate estimates of operative risk are available for contemporary thoracic surgical practice.

Keywords: 90-Day mortality; Perioperative mortality; Risk model; Thoracic surgery.

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