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When blood pressure is measured there are two readings systolic and diastolic and neither is zero unless the patient is dead. If the intravenous bottle was at the same level as the arm, blood pressure would force blood into the bottle. The bottle must be raised to increase the 'static head' of the liquid to greater than blood pressure to force flow into the arm.

2007-03-09 02:48:54 · answer #1 · answered by Kes 7 · 0 0

My guess is: To increase the pressure of the flow of the dextrose. Assume that we have a water tank at the top of a ten-floor apartment building, and this tank supplies water to all floors. The floor with the strongest water pressure would be the first floor, and the floor with the least pressure would be the tenth floor. This is just my guess, maybe the other guys here could provide a better explanation.

2007-03-09 02:11:11 · answer #2 · answered by Dowland 5 · 0 0

at different heights, different amounts of pressure are on the IV bag. the more pressure the more force will be acting on the bag, and the faster the fluid will leave the bag and enter the patient. if the bag is lowered, the rate will slow down. if it is below the patient's arm, there will be no force in the upwards direction and the patient will not receive anything from the iv.

2007-03-09 02:06:05 · answer #3 · answered by metalluka 3 · 0 1

This is because the liquid in the bottle must go inside the vein. And since there is no pump in the bottle, the liquid is pushed inside by gravity.

2007-03-09 02:08:07 · answer #4 · answered by Inspector Clouseau 3 · 1 0

Newton's law

2007-03-09 02:04:11 · answer #5 · answered by Forest Breeze 2 · 0 0

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