Clinical Report: Modified Frailty Index-5 Predicts Major Complications After VATS Lung Resections

Overview

This study evaluated the Modified Frailty Index-5 (MFI-5) as a predictor of major postoperative complications and 30-day mortality in patients undergoing video-assisted thoracoscopic surgery (VATS) for lung cancer. The findings suggest that MFI-5, which includes hypertension, diabetes mellitus, COPD, congestive heart failure, and functional status, is a valuable tool for risk stratification in this population.

Background

Video-assisted thoracoscopic surgery (VATS) is increasingly used for early-stage non-small cell lung cancer (NSCLC) due to its minimally invasive nature. Despite lower complication rates compared to thoracotomy, serious postoperative complications still occur and can lead to non-cancer-related mortality. Frailty, defined as decreased physiological reserve and resistance to stressors, has been linked to postoperative outcomes. The Modified Frailty Index-5 (MFI-5) simplifies frailty assessment to five parameters: hypertension, diabetes mellitus, chronic obstructive pulmonary disease, congestive heart failure, and functional independence status. Its predictive value for complications after pulmonary resections has been underexplored.

Data Highlights

The study retrospectively reviewed patients undergoing VATS lobectomy or segmentectomy for NSCLC from 2018 to 2023. Major complications were defined as Clavien–Dindo grade 2 or higher, including pneumonia requiring ventilation, empyema, atrial fibrillation, bronchopleural fistula, bleeding, acute renal failure, chylothorax, prolonged air leak, and death within 90 days. MFI-5 components were assessed based on clinical history, medication use, pulmonary and cardiac evaluations, and functional status. Statistical analyses were performed using SPSS 25.0.

Key Findings

• MFI-5 effectively predicted major postoperative complications in patients undergoing VATS lung resections.
• Hypertension requiring antihypertensive medication was associated with increased risk of fatal postoperative events, possibly due to intraoperative hypotension.
• Diabetes mellitus contributed to impaired wound healing and increased susceptibility to respiratory infections postoperatively.
• Chronic obstructive pulmonary disease was linked to higher rates of prolonged air leak, respiratory failure, and pneumonia after lung resection.
• Congestive heart failure significantly increased morbidity, hospital readmission, and mortality risk post-surgery.
• Dependent functional status correlated strongly with postoperative complications, reflecting the impact of comorbidities like dementia and stroke sequelae.

Clinical Implications

Clinicians should incorporate MFI-5 assessment preoperatively to identify patients at higher risk for major complications following VATS lung resections. This tool aids in optimizing perioperative management and tailoring postoperative care to reduce morbidity and mortality. Awareness of individual MFI-5 components can guide targeted interventions such as glycemic control, pulmonary rehabilitation, and cardiovascular optimization.

Conclusion

The Modified Frailty Index-5 is a practical and reliable predictor of major postoperative complications and 30-day mortality in patients undergoing VATS pulmonary resections for NSCLC. Its use can enhance risk stratification and improve clinical outcomes in thoracic surgery.

References

1. Rockwood et al. 2005 -- Frailty in elderly people
2. Velanovich et al. 2013 -- Modified Frailty Index and surgical outcomes
3. Kheterpal et al. 2009 -- Antihypertensive drugs and postoperative complications
4. Farhat et al. 2012 -- MFI-5 validation
5. Umpierrez et al. 2012 -- Diabetes and surgical outcomes
6. Kawaguchi et al. 2016 -- COPD and lung resection prognosis
7. Shah et al. 2017 -- CHF and pulmonary resection outcomes
8. Smith et al. 2018 -- CHF impact on thoracic surgery
9. Makary et al. 2010 -- Functional status and postoperative complications
10. Dindo et al. 2004 -- Clavien–Dindo classification of surgical complications
11. Gazi University Ethics Committee 2024 -- Study approval