Table 1.

Haemodynamic variables and right ventricle hypertrophy index.

Group	n	RVSP (mmHg)	RV/(LV+S)
Control	8	23 ± 0.5	0.26 ± 0.02
Hypoxia	10	48 ± 2.8*	0.41 ± 0.05*

Rats were housed intermittently in a hypobaric hypoxia chamber containing 10% oxygen and exposed to these conditions for 10 h/d continuing 28 days. Right ventricle systolic pressure (RVSP) and the ratios of right ventricle/[left ventricle + septum] (RV/[LV+S]) weight were examined as indicators of pulmonary hypertension. Values are means ± SD. *P < 0.05, compared with the corresponding value in control rats.