NPB101L Practical Review

Bicarbonate subject is excreng excess base instead of

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Unformatted text preview: TV, IRV, ERV, minute ven&la&on, dead- space volume and alveolar ven&la&on Part 2: Effects of inspired gas composi-on and lung volume on respira-on •  Measured the % CO2 and dura&on of breath- hold in different situa&ons Condi-on Normal Breathing Re- breathing Hyperven&la&on % CO2 Before Breath- hold MIDDLE LARGEST SMALLEST Condi-on Normal Expira&on Normal Inspira&on Forced Inhala&on Forced Exhala&on % CO2 A`er Breath- Dura-on of Breath- hold hold SAME SAME SAME MIDDLE SMALLEST LONGEST Dura-on of Breath- hold 2nd SHORTEST 2nd LONGEST LONGEST SHORTEST WHY? •  Chemoreceptors help control inspiratory drive •  Change in CO2 in the blood sensed by central chemoreceptors and peripheral chemoreceptors Part 3: Exercise Hypernea •  Subject rode an exercise bike against increasing workloads and TV, RR and %CO2 INCREASE •  As workload increased there was an ___________ in TV, RR, minute ven&la&on, and minute CO2 •  FECO2 remains the same WHY? Exercise increases the demand for O2...
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