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Cardiopulmonary exercise testing in the preoperative assessment for lung resection surgery
1Department of Clinical Investigation, Human Performance Laboratory and Pulmonary/Critical Care Services, William Beaumont Army Medical Center, El Paso, TX 79920-5001, USA. iweisman@aol.com
Seminars in Thoracic and Cardiovascular Surgery
|August 9, 2001
Summary
Cardiopulmonary exercise testing (CPET) offers a superior assessment of functional capacity for lung surgery patients compared to pulmonary function tests (PFTs). CPET, including VO2max, aids in accurately evaluating surgical risk, especially for borderline cases.
Area of Science:
- Cardiopulmonary physiology
- Thoracic surgery
- Diagnostic imaging
Background:
- Pulmonary function tests (PFTs) are initial tools for identifying high-risk patients for lung resection surgery.
- Accurate preoperative assessment requires advanced modalities beyond PFTs, such as cardiopulmonary exercise testing (CPET) and split function studies.
Purpose of the Study:
- To evaluate the role of CPET, including VO2max, in the physiologic assessment for lung resection surgery.
- To compare the utility of CPET with traditional split function studies in preoperative decision-making.
- To optimize the assessment of surgical risk for lung resection candidates.
Main Methods:
- Utilizing CPET to measure functional capacity and global oxygen transport (VO2max).
- Assessing cardiac and pulmonary reserves through CPET.
- Comparing CPET results with PFTs and split function studies for risk stratification.
Main Results:
- CPET provides a better index of functional capacity and global O2 transport (VO2max) than PFTs.
- CPET can detect clinically occult heart disease and offers a more reliable postoperative functional capacity estimate.
- Recent evidence suggests using CPET before split function studies, as VO2max % predicted is a strong independent predictor of risk.
Conclusions:
- CPET, particularly VO2max, is integral to the stepwise physiologic assessment for lung resection surgery.
- CPET offers a more accurate evaluation of functional capacity and surgical risk compared to PFTs alone.
- Combining CPET and split function studies optimizes surgical risk assessment, especially for borderline patients, ensuring curative resection opportunities are not missed.