1) A 22- year old man was in a motorcycle accident with resultant neck injuries that led to partial paralysis of the upper and lower limbs. Almost immediately his chest felt heavy and he became dyspneic. His pulmonary values:
Vital capacity (supine) = 650 ml
Minute ventilation (supine) = 6 L/min
Respiratory rate (supine) = 30 b/min
PaO2 = 61 mmHg
PaCO2 = 47 mmHg
1. What are the values for the tidal volume (TV) and the alveolar ventilation (AV)for this individual. (assume a normal value for dead space) Compare with normal.
a. tidal volume=
b. alveolar ventilation=
2. What is contributing to the decreased alveolar ventilation?
3. Which nerves and muscles are involved in this problem?
4. How is the residual volume affected?
%. What is causing the dyspnea in this individual?
6. Describe the reflexes involving causing the tachypnea in this individual.