venous blood pressure การใช้

• Lying head down may help since it increases venous blood pressure and congestion of the mucosa.
• This grasp very close to the venous blood pressure generally forces a small amount of blood into the set's transparent tubing, and this visible " flash " signals venous entry.
• This is accomplished by inflating a pneumatic cuff around the thigh to sufficient pressure to cut off venous flow but not arterial flow, causing the venous blood pressure to rise until it equals the pressure under the cuff.