I need help on 3 of my hw questions. Any help would be appreciated. Determine th

Question

I need help on 3 of my hw questions. Any help would be appreciated.

Determine the AP through a pneumotachometer so that we can calibrate our heart - lung machine to deliver the right amount of gas flow to a patient. We wish to generate a peak volumetric flow rate during surgery, Q, of 1.25 liters/min. Given that the mesh resistance is ~ 0.09 mmHg/L/min, what is the maximum pressure differential the machine needs to produce? 0.1125 mmHg 8.67 mmHg 8.67 cmH20 19.5 cmH20 0.195 mmHg What is the AR on an impedance pneumograph when the excitation current is 10 microA, the output voltage is 1 V, and the resting R is 10 kohm? 1 kohm plusminus 10 kohm 9kohm plusminus 90 kohm None of the above A patient breathes ambient air at 20degree C into her lungs and holds it long enough to heat the air up to internal body temperature. She then breathes the air back into a balloon and lets it return to ambient air temperature. If the final volume of the balloon is 3.0 L, what was the volume of air inside her lungs, assuming that the P air = Plunas? air lungs 1.1 L 2.2 L 4.2 L 5.18 L 5.55 L

Explanation / Answer

1 B

2.D

3.B

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