Correlation of arterial pressure and pluse oximetry plethysmographic waveform during changes in blood volume
- VernacularTitle:动脉压与脉氧饱和度波形相关性的改变
- Author:
Haifang XU
;
Shu ZHOU
;
Buwei YU
- Publication Type:Journal Article
- Keywords:
Plethysmography;
Arterial pressure;
Oximetry;
Hemodilution
- From:
Chinese Journal of Anesthesiology
1994;0(06):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To assess the feasibility of using plethysmographic waveform variation for estimating the blood volume.Methods After general anesthesia,tracheal intubation and 750ml liquid infusion,the systolic pressure variation(SPV),dDown(delta down),dUp(delta up),SPV plet,dDown plet,dUp plet,cardiac output and other hemodynamic parameters were recorded as control.Then,300ml of blood were drained quickly from radial artery into reservoir bag,and replaced with equal volume Gelofusine.The parameters were recorded again after blood drainage and volume replacement respectively.Results The changes in plethysmographic waveform correlated well with changes in arterial dDown(r==0804 ,P=0005)after acute loss of 300ml blood and dDown and dDown pletincreased from(459?294)mm Hg and (1024?532)% to (700?336)mm Hg and (1611?744)% respectively.Moreover,dDown,SPV plet and dDown pletvaried significantly(P
