The change of heart rates during flack test was observed in the pregnant women, 24-48 weeks of gestational age, to analyze mechanical and neural regulatory factors: in responses to the positive lung inflation.
The results obtained weree sumrhiarized as followings:
1. Endurance time of flack test was 37.6. sec. In the nonpregnant women, and 25.1 sec.in the pregnant women.
2. When flack test was employed, heart rate was decreased in early stage of flack test in the pregnant women, while heart rate was increased in the nonpregnant women
3. In the pregnant women bradycardia-due to abdominal mechanical intervention in early stage of flack test was prominent, while tachycardia was found in the nonpregnant women.
4. During flack test, tachycardia due to sympathetic central reflex activation was observed immediately after bradycardia in early stage of flack test.
5. It may be noted that flack test employed in the present study is a useful model to evaluate and analyze the neural and mechanical abdominal intervention factor on response to the positivep inflation of lung in pregnant women.
|