Thema
Aged
1
Aged, 80 and over
Brain Ischemia
1
Cerebrospinal Fluid Leak
1
Comorbidity
1
Diabetes Mellitus
1
Dyslipidemias
1
Elective Surgical Procedures
1
Female
1
Hospital Mortality
1
Humans
1
Hypertension
1
Incidence
1
Intraoperative Complications
1
Male
1
Middle Aged
1
Retrospective Studies
1
Risk Factors
1
Smoking
1
Spine
1
Stroke
1