TheLionKing
<font color=#6600CC>Will Conga for Fun<br><font co
- Joined
- Nov 2, 2000
- Messages
- 1,163
"Lessening the heart's workload" is not completely accurate.
The inferior vena cava typically has a pressure of 2 - 8 mm of Hg. Arterial blood pressure is that typical number you see such as 120/80 mm of Hg and the mean blood pressure is around 90 mm of Hg. The fetus pressing against the IVC can compress the IVC thus impeding blood flow from returning to the right side of the heart from the lower body.
Decreased venous return may result in inadequate filling of the heart lowering the cardiac output and thus blood flow to the body and also the fetus. The most outward sign of this could be lowered blood preessure.
By laying on the left side, this puts less pressure on the IVC, the blood can more easily return to the heart and filling of the heart is normal resulting in a good cardiac output.
I will post a test on this tomorrow.
The inferior vena cava typically has a pressure of 2 - 8 mm of Hg. Arterial blood pressure is that typical number you see such as 120/80 mm of Hg and the mean blood pressure is around 90 mm of Hg. The fetus pressing against the IVC can compress the IVC thus impeding blood flow from returning to the right side of the heart from the lower body.
Decreased venous return may result in inadequate filling of the heart lowering the cardiac output and thus blood flow to the body and also the fetus. The most outward sign of this could be lowered blood preessure.
By laying on the left side, this puts less pressure on the IVC, the blood can more easily return to the heart and filling of the heart is normal resulting in a good cardiac output.
I will post a test on this tomorrow.
