Table 1.

Membrane potential (Em) determinations in 100–300-μm-diameter pulmonary arteries of normoxic and hypoxic piglets from the 10-day exposure group measured at transmural pressures of 11 and 18 mmHg

Group	Transmural pressure, mmHg	n	Mean Em ± SEM, mV
10-day normoxic	11	23	−55 ± 1
10-day normoxic	18	5	−58 ± 1.5
10-day hypoxic	11	6	−51 ± 0.8a
10-day hypoxic	18	18	−49 ± 1a

^aSignificantly different () from normoxic piglets at both 11 and 18 mmHg.