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KMID : 0356019860010010038
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Koean Jounral of Critical Care Medicine
1986 Volume.1 No. 1 p.38 ~ p.45
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The Effects of Air Bubble on Damping of Arterial Pressure Waves during Monitoring of Mean Arterial Pressure
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Abstract
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By virtue of the development of monitoring system and increasing tendency of critically ilI patients, We have performed cannuIation of radia1 artery after Allen´s test for the continuous monitoring of arterial pressure.
It is very important to measure blood pressure accurately, so it gives us many informations in. the poor risk patients.
During monitoring of blood pressure for several years, we have had much troubles because of damping of arterial pressure waves due to air bubbles.
In this study, we used P23 Db pressure tranducer and Spacelab Alpha System for monitoring of blood pressure, following cannulation of radial artery.
Air bubbles of 0.5 ml, 1. 0 ml, 15 mI and 2. 0 ml were inserted into m0nitoring system, i.e. fluid-filled catheter respectivey.
The statistical analysis by paired student T-test showed following results.
1) Systolic blood pressure were decreased significantly from 110±14.4 torr of con.trol graup to 105±15. 9 torr, 102± 16. 1 torr, 99±16.2 torr and 99±15.2 torr in o.5 ml, 1.0 ml, 1 and 2.0 ml air groups respectively.
2) Diastolic blood pressure were increased from 70±12.4 torr of control group to 72±13.8 torr, 76±13.9 torr, 78± 14. 3 torr and 81±13.1 torr in each cases respectively.
3) Pulse pressure were decreased from 40±13.3 torr of control group to 33±15.4 torr, 26 ±13.6 torr, 22± 13. 0 torr and 18± 12. 0 torr in each cases respectively.
4) But mean. arterial pressure showed no significant changes except in 2. 0 ml air group, where showed slight charge.
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KEYWORD
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