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Percent predicted peak oxygen uptake is superior to weight-indexed peak oxygen uptake in risk stratification before lung cancer lobectomy

  • 0Department of Cardiothoracic and Vascular Surgery, and Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden.
The Journal of Thoracic and Cardiovascular Surgery +

|

March 7, 2024

|

March 7, 2024

View abstract on PubMed

Summary

This summary is machine-generated.

Percent predicted peak oxygen uptake (% predicted VO2peak) is a better predictor of major complications after lung cancer lobectomy than weight-indexed VO2peak. This helps identify high-risk patients for improved preoperative risk stratification.

Area Of Science

  • Cardiology
  • Thoracic Surgery
  • Pulmonary Medicine

Background

  • Lung cancer lobectomy carries significant risks of major complications.
  • Accurate preoperative risk stratification is crucial for patient management.
  • Peak oxygen uptake (VO2peak) is a key metric for assessing cardiopulmonary exercise capacity.

Purpose Of The Study

  • To compare the effectiveness of weight-indexed VO2peak versus % predicted VO2peak in stratifying preoperative risk for lung cancer lobectomy.
  • To identify optimal thresholds for these VO2peak measures to predict major complications or death.

Main Methods

  • Longitudinal cohort study using national registry data of patients undergoing lung cancer lobectomy.
  • Preoperative cardiopulmonary exercise testing data were analyzed.
  • Receiver operating characteristic analysis determined thresholds for risk stratification based on weight-indexed and % predicted VO2peak.

Main Results

  • % predicted VO2peak (using Wasserman-Hansen and Study of Health in Pomerania equations) showed significant differences in complication rates across low-, intermediate-, and high-risk groups.
  • Weight-indexed VO2peak did not significantly differentiate complication frequencies between risk groups.
  • A threshold of <15 mL/kg/min for weight-indexed VO2peak also failed to show significant differences in outcomes.

Conclusions

  • % predicted VO2peak is a more reliable indicator of increasing risk for major complications, even at lower exercise capacities, compared to weight-indexed VO2peak.
  • The study recommends using % predicted VO2peak for improved preoperative risk stratification in patients undergoing lung cancer lobectomy.
  • % predicted VO2peak is preferable for identifying high-risk individuals, thereby enhancing surgical decision-making and patient safety.

Keywords:

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