Abbreviations S
S1
first heart sound
S4
fourth heart sound
stat
immediately
Scope
microscope or endoscope
S.D.
subdermal
SIDS
sudden infant death syndrome
SVC
superior vena cava
SICU
surgical intensive care unit
Sx
symptoms
S3
third heart sound
Spec
specimen
SCI
spinal cord injury
SCIWORA
spinal cord injury without radiographic abnormality
S
sacrum
SCZ
schizophrenia
SAR
seasonal allergic rhinitis
S2
second heart sound
SARS
severe acute respiratory syndrome
SOB
shortness of breath
SCD
sickle cell disease
SE
side effect
S/S
signs and symptoms
SA
sinoatrial node
SM
skeletal muscle
SSI
sliding scale insulin
SB
small bowel
SBO
small bowel obstruction
SGA
small for gestational age
SHX
social history
SG
specific gravity