Which of the following changes occurs in the respiratory system of a pregnant woman?
A) Progesterone increases the threshold of the medullary respiratory center to carbon dioxide.
B) Minute ventilation increases by as much as 50%, which causes the PaCO2 to drop by about 5 mm Hg.
C) Oxygen consumption decreases by approximately 20%, causing a 40% decrease in tidal volume.
D) An increase in blood bicarbonate levels causes a slight decrease in the pH level of the blood.
Answer: B) Minute ventilation increases by as much as 50%, which causes the PaCO2 to drop by about 5 mm Hg.
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The ventilator mode that is either patient triggered or time triggered and allows the patient to breathe spontaneously between mandatory ventilator breaths is known as:
a. Pressure-support ventilation c. Intermittent man-datory ventilation b. Pressure-controlled ventilation d. Continuous man-datory ventilation
What is forms control?
What will be an ideal response?