5-HT	5-Hydroxytryptamine
ACh	Acetylcholine
AMB	Ambrisentan
ANOVA	Analysis of variance
BW	Body weight
CO	Cardiac output
CRC	Concentration-response curve
CTR	Control
dP/dtmax	The rate of rise in right ventricular pressure
dP/dtmin	The rate of decrease in right ventricular pressure
EDA	End-diastolic area
EDV	End-diastolic volume
EF	Ejection fraction
Emax	Maximum effect
ESA	End-systolic area
ESV	End-systolic volume
ET	Ejection time
ET-1	Endothelin 1
FAC	Fractional area change
FS	Fractional shortening
HE	Hematoxylin and eosin
HR	Heart rate
IDD	Internal diameter in diastole
IDS	Internal diameter in systole
ISO	Isoprenaline
LA	Left atrium
LV	Left ventricle
LV + S	Left ventricle with septum
LVWTd	Left ventricular wall thickness in diastole
LVWTs	Left ventricular wall thickness in systole
MCT	Monocrotaline
mPAP	Mean aulmonary artery pressure
PA	Pulmonary artery
PAAT	Pulmonary artery acceleration time
PAH	Pulmonary arterial hypertension
pEC50	Negative logarithm of the concentration causing the half-maximum effect
PH	Pulmonary hypertension
PDE-5	Phosphodiesterase 5
RA	Right atrium
RV	Right ventricle
RVOT	Right ventricular outflow tract
RVSP	Right ventricular systolic pressure
RVWTd	Right ventricular wall thickness in diastole
RVWTs	Right ventricular wall thickness in systole
SEM	Standard error of the mean
SNP	Sodium nitroprusside
SpO2	Blood oxygen saturation
SV	Stroke volume
TAD	Tadalafil
TAPSE	Tricuspid annular plane systolic excursion
TL	Tibia length
veh	Vehicle
VTI	Velocity time integral