AHA	American Heart Association
AUC	Area Under the Curve
CA	Cardiac Arrest
CI	Confidence Interval
CPC	Cerebral Performance Category
CPR	Cardiopulmonary Resuscitation
DAMP	Damage-Associated Molecular Pattern
DOR	Diagnostic Odds Ratio
ECLIA	Electrochemiluminescence Immunoassay
EEG	Electroencephalography
ELISA	Enzyme-Linked Immunosorbent Assay
ERK	Extracellular Signal-Regulated Kinase
GOS	Glasgow Outcome Scale
GFAP	Glial Fibrillary Acidic Protein
GRADE	Grading of Recommendations, Assessment, Development and Evaluation
IHCA	In-Hospital Cardiac Arrest
IL	Interleukin
LR+/LR−	Positive/Negative Likelihood Ratio
MAPK	Mitogen-Activated Protein Kinase
MeSH	Medical Subject Headings
mRS	Modified Rankin Scale
NF-κB	Nuclear Factor kappa-light-chain-enhancer of activated B cells
NfL	Neurofilament Light Chain
NS	Not specified
NSE	Neuron-Specific Enolase
NOS	Newcastle–Ottawa Scale
OHCA	Out-of-Hospital Cardiac Arrest
PRISMA	Preferred Reporting Items for Systematic Reviews and Meta-Analyses
PROSPERO	International Prospective Register of Systematic Reviews
RAGE	Receptor for Advanced Glycation End Products
ROSC	Return of Spontaneous Circulation
S100B	S100 Calcium-Binding Protein B
SHD	Survival to Hospital Discharge
SMD	Standardized Mean Difference
SROC	Summary Receiver Operating Characteristic
TNF-α	Tumor Necrosis Factor alpha
TTM	Targeted Temperature Management