Results The regular antenatal examination rate for pregnant women was significantly lower in altitude group than in plain group(10.34% vs 94.67%, P<0.01).

If carries on the examination under doctor's instruction, can guarantee that the early pregnancy indicator paper correct use, the examination rate of accuracy most can be higher.

Asymptomatic paroxysmal atrial tachycardia (PAT) was tested in 1128 cases of heart disease by 24-hour ambulatory electrocardiography, and was discovered in 279 cases, examination rate is 24.7%.