Echocardiographic reference intervals with allometric scaling of 823 clinically healthy rhesus macaques (Macaca mulatta)

Table 3 Results of linear regression analysis of logarithmically transformed echocardiographic variables and body weight including the proportionality constants (a) and allometric scaling exponents (b) from clinically healthy rhesus macaques

Echocardiographic parameters	Proportionality constant (a)	SE of Y estimate	Scaling exponent (b)	SE of b	R²
LA (sa)	0.022	0.04998	0.258	0.00920	0.49
Ao (sa)	−0.148	0.04885	0.286	0.00899	0.56
LA (la)	0.072	0.05847	0.254	0.01069	0.41
Ao (la)	−0.278	0.05063	0.310	0.00926	0.58
IVSd (2D)	0.505	0.06733	0.256	0.01340	0.35
LVPWd (2D)	0.548	0.0565	0.256	0.01124	0.43
IVSd (M-mode)	−0.512	0.07535	0.241	0.01383	0.27
LVDd (M-mode)	0.101	0.04955	0.262	0.00909	0.51
LVPWd (M-mode)	−0.517	0.06389	0.292	0.01172	0.43
IVSs (M-mode)	−0.364	0.0758	0.260	0.01391	0.3
LVDs (M-mode)	−0.948	0.08478	0.236	0.01556	0.22
LVPWs (M-mode)	−0.366	0.06537	0.317	0.01200	0.46

IVSd Interventricular septal thickness in diastole, IVSs Interventricular septal thickness in systole, LVDs Left ventricular internal diameter in systole, LVPWd Left ventricular posterior wall thickness in diastole, LVPWs Left ventricular posterior wall thickness in systole, LA (la) Left atrial diameter in diastole from long-axis view, LA (sa) Left atrial diameter in diastole from short-axis view, TAPSE Tricuspid annular plane systolic excursion

ISSN: 1746-6148