Turkish Neurosurgery 2023 , Vol 33 , Num 6
Impact of Obesity on Anterior Cervical Discectomy and Fusion (ACDF): Postoperative Morbidity and Mortality
George THOMAS1,Puneet GUPTA1,Taimur CHAUDHRY1,Neil D ALMEIDA2,William WOODALL3,John THOMAS4,Bennett R. LEVY1,Nyle C. ALMEIDA5,Jonathan H SHERMAN3
1George Washington University School of Medicine and Health Sciences, Washington, DC, USA
2University at Buffalo, State University of New York, School of Medicine and Biomedical Sciences, Department of Neurosurgery, Buffalo, New York, USA
3West Virginia University Rockefeller Neuroscience Institute, Department of Neurosurgery, Martinsburg, WV 25401, USA
4West Virginia School of Osteopathic Medicine, Lewisburg, WA
5University of Oklahoma College of Medicine, Oklahoma City, Oklahoma
DOI : 10.5137/1019-5149.JTN.43115-22.1 AIM: To investigate the impact of obesity on postoperative morbidity and mortality in patients who underwent anterior cervical discectomy and fusion (ACDF).

MATERIAL and METHODS: The American College of Surgeons? National Surgical Quality Improvement Project (NSQIP) files from 2006 to 2019 were queried for all patients who underwent an ACDF. Fisher exact tests were used in analyzing univariate differences in preoperative comorbidities and postoperative morbidity and mortality between patients with and without obesity (BMI ?30 kg/ m2). Results with a p value <0.05 were considered statistically significant. Multivariable logistic regression models were used in determining the independent impact of obesity on ACDF postoperative morbidity and mortality. A p value <0.017 was required for multivariate statistical significance.

RESULTS: There were 96,882 patients who underwent an ACDF from 2006 to 2019 found. 53.77% had non-obese BMI. Patients had statistically significant differences in most perioperative comorbidities and postoperative outcomes on univariate analysis. On multivariate analysis, patients with obesity has decreased adjusted odds of wound infections (aOR=0.7208, CI 0.574?0.9075, p=0.0053), pulmonary events (aOR=0.7939, CI 0.6903?0.9129, p=0.0012), sepsis (aOR=0.5670, CI 0.4359?0.7374, p=2.32E-05), transfusion requirements (aOR=0.5396, CI 0.4498?0.6473, p=3.04E-11), return to operating room (aOR=0.7537, CI 0.6727?0.8447, p=1.17E-06), and length of stay >10 days (aOR=0.7061, CI 0.6438?0.7744, p=1.49E-13).

CONCLUSION: Obesity is a protective factor toward ACDF postoperative complications. Obesity as a marker of patient selection criteria for ACDF procedures should not be used by spine surgeons. Keywords : ACDF, Obesity, Spine surgery, Cervical fusion

Corresponding author : George THOMAS, gmathewthomas@gmail.com