AFI	Amniotic fluid index
AFV	Amniotic fluid volume
AOR	Adjusted odds ratio
BOLD	Blood-oxygen-level-dependent
BP	Blood pressure
CI	Confidence interval
CO	Cardiac output
CS	Cesarean section
CTG	Cardiotocography
ECV	External cephalic version
FBS	Fetal behavioral state
FHR	Fetal heart rate
fHRV	Fetal heart rate variability
FiO2	Fraction of inspired oxygen
GH	Gestational hypertension
HR	Heart rate
IVC	Inferior vena cava
MAP	Mean arterial blood pressure
MCA	Middle cerebral artery
MRI	Magnetic resonance imaging
NICU	Neonatal intensive care unit
NPV	Negative predictive value
OA	Occipito-anterior
OP	Occipito-posterior
OR	Odds ratio
OUS	Orthostatic uterovascular syndrome
PAS	Placenta accreta spectrum
PI	Pulsatility index
pO2	Partial pressure of oxygen
PPROM	Preterm prelabor rupture of membranes
PPV	Positive predictive value
PT	Positional therapy
PTB	Preterm birth
RCT	Randomized controlled trial
S/D	Systolic/diastolic
SGA	Small-for-gestational-age
SHS	Supine hypotensive syndrome
SM	Spontaneous miscarriage
RI	Resistance index
RR	Relative risk
UA	Umbilical artery
UtA	Uterine artery